MAXM17631AME+T

MAXM17630 MAXIM | Alldatasheet

Document overview

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Technical content

The Himalaya series of voltage regulator ICs and power modules enable cooler, smaller, and simpler power supply solutions. The MAXM17630/MAXM17631/MAXM17632 are a family of high-efficiency, synchronous step-down DC-DC modules with integrated controller, MOSFETs, compensation components and inductor that operate over a wide input-voltage range. The modules operate from 4.5V to 36V and deliver up to 1A output current. The MAXM17630 and MAXM17631 are fixed 3.3V and 5V output modules, respectively. The MAXM17632 is an adjustable output (0.9V to 12V) module. The modules sig- nificantly reduce design complexity, manufacturing risks, and offer a true plug-and-play power-supply solution, reducing time-to-market. Built-in compensation across the output-voltage range eliminates the need for external compensation components. These modules feature peak-current-mode control architecture. The modules can be operated in pulse- width modulation (PWM), or pulse-frequency modu - lation (PFM), or discontinuous-conduction mode (DCM) to enable high efficiency under light-load conditions. The feedback-voltage regulation accuracy over -40°C to +125°C for the module family is ±1.2%. These power modules are available in a low profile, compact 16-pin, 3mm x 3mm x 1.75mm, uSLIC™ package. Simulation Models are available.

Applications

• Industrial Control Power Supplies
• General Purpose Point-of-Load
• Distributed Supply Regulation
• Base Station Power Supplies
• High Voltage Single-Board Systems
• Programmable Logic Controller Ordering Information appears at end of data sheet. 19-100596; Rev 1; 10/19 Benefits and Features
• Easy to Use
• Wide 4.5V to 36V Input
• Adjustable 0.9V to 12V Output (MAXM17632)
• Fixed 3.3V and 5V output versions (MAXM17630 and MAXM17631)
• 400kHz to 2.2MHz Adjustable Frequency with External Clock Synchronization
• ±1.2% Feedback Accuracy
• Up to 1A Output Current
• Internally Compensated
• All Ceramic Capacitors
• High Efficiency
• Selectable PWM-, PFM- or DCM-Mode of Operation
• Auxiliary Bootstrap Supply (EXTVCC) for Improved Efficiency
• Shutdown Current as Low as 2.8μA (typ)
• Flexible Design
• Adjustable and Monotonic Startup with Prebiased Output Voltage
• Built-In Output-Voltage Monitoring with RESET Pin
• Programmable EN/UVLO Threshold
• Robust Operation
• Hiccup-Mode Overload Protection
• Overtemperature Protection
• -40°C to +125°C Ambient Operating Temperature/ -40°C to +150°C Junction Temperature
• Rugged
• Complies with CISPR22(EN55022) Class B Conducted and Radiated Emissions
• Passes Drop, Shock, and Vibration Standards: JESD22-B103, B104, B111 uSLIC is a trademark of Maxim Integrated Products, Inc. Click here for production status of specific part numbers. MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module EVALUATION KIT AVAILABLE

Typical Application Circuit fSW: 1250kHz C1: MURATA 4.7µF/X7R/50V/1206 (GRM31CR71H475KA12) C4: MURATA 22µF/X7R/25V/1210 (GRM32ER71E226KE15) RESET EN/UVLO BST RT SGND VCC SS PGND LX VIN 5600pF EXTVCC VOUT MAXM17631 EP 4.7μF VIN 7V TO 36V C1 C4 OUT FB C2 C3 2.2μF 0.1μF 22µF 15kΩ MODE/SYNC 5V/1A RESET EN/UVLO BST RT SGND VCC SS PGND LX VIN 5600pF EXTVCCMAXM17632 EP 4.7μF VIN 4.5V TO 36V 3.32MΩ C1 C4 OUT FB C2 C3 1.05MΩ 229kΩ 88.7kΩ 2.2μF 0.1μF 22µF 21.5kΩ MODE/SYNC VOUT 3.3V/1A fSW : 900kHz C1: MURATA 4.7µF/X7R/50V/1206 (GRM31CR71H475KA12) C4: MURATA 22µF/X7R/25V/1210 (GRM32ER71E226KE15) www.maximintegrated.com Maxim Integrated │ 2 MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

PACKAGE TYPE: 16-Pin uSLIC Package Code M1633+1 Outline Number 21-100298 Land Pattern Number 90-100110 THERMAL RESISTANCE, FOUR-LAYER BOARD (Note 2) Junction to Ambient (θJA) 28°C/W Note 1: Junction temperature greater than +125°C degrades operating lifetimes. Note 2: Package thermal resistance is measured on an evaluation board with natural convection. (VIN = V EN/UVLO = 24V, R RT = open (f SW = 400 kHz), C VCC = 2.2μF, V MODE/SYNC = V EXTVCC = V SGND = V PGND = 0V, V FB = 3.67V (MAXM17630), V FB = 5.5V (MAXM17631), V FB = 1V (MAXM17632), LX = SS = RESET = OUT = OPEN, V BST to V LX = 5V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at T A = +25°C. All voltages are referenced to SGND, unless other - wise noted.) (Note 3) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS INPUT SUPPLY (VIN) Input Voltage Range VIN 4.5 36 V Input Shutdown Current IIN-SH VEN/UVLO = 0V, shutdown mode 2.8 4.5 μA Input-Quiescent Current IQ-PFM MODE/SYNC = Open, VEXTVCC = 5V, RRT = 15kΩ 50 μA IQ-DCM MODE/SYNC = VCC, VEXTVCC = 5V, RRT = 15kΩ 0.65 mA IQ-PWM MODE/SYNC = GND, VEXTVCC = 5V, RRT = 15kΩ, fSW = 1250kHz 11 Absolute Maximum Ratings Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.

Package Information

Electrical Characteristics

www.maximintegrated.com Maxim Integrated │ 3 MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

(VIN = V EN/UVLO = 24V, R RT = open (f SW = 400 kHz), C VCC = 2.2μF, V MODE/SYNC = V EXTVCC = V SGND = V PGND = 0V, V FB = 3.67V (MAXM17630), V FB = 5.5V (MAXM17631), V FB = 1V (MAXM17632), LX = SS = RESET = OUT = OPEN, V BST to V LX = 5V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at T A = +25°C. All voltages are referenced to SGND, unless other - wise noted.) (Note 3) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ENABLE/UVLO (EN/UVLO) EN/UVLO Threshold VENR VEN/UVLO rising 1.19 1.215 1.26 V VENF VEN/UVLO falling 1.068 1.09 1.131 EN/UVLO Input Leakage Current IEN VEN/UVLO = 0V, TA = +25°C -50 +50 nA VCC (LDO) VCC Output-Voltage Range VCC 6V < VIN < 36V, 0mA ≤ IVCC ≤ 10mA 4.75 5 5.25 V VCC Current Limit IVCC(MAX) VCC = 4.5V; VIN = 7.5V 25 50 mA VCC Dropout VCC-DO VIN = 4.5V, IVCC = 10mA 0.3 V VCC UVLO VCC-UVR VCC rising 4.05 4.2 4.3 V VCC UVLO VCC-UVF VCC falling 3.65 3.8 3.9 V EXTVCC EXTVCC Switchover Threshold VEXTVCC rising 4.56 4.7 4.84 V VEXTVCC falling 4.3 4.45 4.6 SOFT-START (SS) Charging Current ISS VSS = 0.5V 4.7 5 5.3 μA FEEDBACK (FB) FB Regulation Voltage VFB-REG MODE/SYNC = SGND or MODE/SYNC = VCC, for MAXM17630 3.26 3.3 3.34 V MODE/SYNC = SGND or MODE/SYNC = VCC, for MAXM17631 4.94 5 5.06 MODE/SYNC = SGND or MODE/SYNC = VCC, for MAXM17632 0.889 0.9 0.911 MODE/SYNC = Open, for MAXM17630 3.26 3.36 3.43 MODE/SYNC = Open, for MAXM17631 4.94 5.09 5.20 MODE/SYNC = Open, for MAXM17632 0.89 0.915 0.936 FB Input-Bias Current IFB For MAXM17630 11 μA For MAXM17631 17 0 ≤ VFB ≤ 1, TA = 25°C, For MAXM17632 -50 +50 nA MODE/SYNC MODE Threshold VM-DCM MODE/SYNC = VCC (DCM Mode) VCC- 0.65 VVM-PFM MODE/SYNC = Open (PFM Mode) VCC/2 VM-PWM MODE/SYNC = SGND (PWM mode) 0.75 SYNC Frequency- Capture Range fSYNC fSW set by RRT 1.1 × fSW 1.4 × fSW kHz Electrical Characteristics (continued) www.maximintegrated.com Maxim Integrated │ 4 MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

Note 3: Electrical specifications are production tested at T A = +25°C. Specifications over the entire operating temperature range are guaranteed by design and characterization. (VIN = V EN/UVLO = 24V, R RT = open (f SW = 400 kHz), C VCC = 2.2μF, V MODE/SYNC = V EXTVCC = V SGND = V PGND = 0V, V FB = 3.67V (MAXM17630), V FB = 5.5V (MAXM17631), V FB = 1V (MAXM17632), LX = SS = RESET = OUT = OPEN, V BST to V LX = 5V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at T A = +25°C. All voltages are referenced to SGND, unless other - wise noted.) (Note 3) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SYNC Pulse Width 50 ns SYNC Threshold VIH 2.1 V VIL 0.8 RT Switching Frequency fSW RRT = 50.8kΩ 380 400 420 kHz RRT = 40.2kΩ 475 500 525 RRT = 8.06kΩ 1950 2200 2450 RRT = Open 370 400 430 VFB Undervoltage Trip Level to Cause Hiccup VFB-HICF For MAXM17630 2.05 2.13 2.2 VFor MAXM17631 3.11 3.22 3.33 For MAXM17632 0.56 0.58 0.6 Hiccup Timeout 32678 Cycles Minimum On-Time tON(MIN) 52 80 ns Minimum Off-Time tOFF(MIN) 140 160 ns RESET RESET Output Level Low VRESETLKG IRESET =10mA 400 mV RESET Output- Leakage Current IRESETLKG TA = TJ = 25°C, VRESET = 5.5V -100 +100 nA FB Threshold for RESET Deassertion VFB-OKR VFB rising 93.8 95 97.8 % FB Threshold for RESET Assertion VFB-OKF VFB falling 90.5 92 94.6 % RESET Delay After FB Reaches 95% Regulation

1024 Cycles

THERMAL SHUTDOWN (TEMP) Thermal-Shutdown Threshold Temperature rising 165 °C Thermal-Shutdown Hysteresis 10 °C Electrical Characteristics (continued) www.maximintegrated.com Maxim Integrated │ 5 MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

(VEN/UVLO = VIN = 24V, VSGND = VPGND = 0V, CVCC = 2.2μF, CBST = 0.1μF, CSS = 5600pF, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted.) Typical Operating Characteristics 100 EFFICIENCY (%) LOAD CURRENT (A) MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 0.9V, fSW = 400kHz, PWM MODE toc001 VIN = 5V VIN = 12V VIN = 24V 100 EFFICIENCY (%) LOAD CURRENT (A) MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 1.5V, fSW = 480kHz, PWM MODE toc002 VIN = 5V VIN = 12V VIN = 24V VIN = 36V 100 EFFICIENCY (%) LOAD CURRENT (A) MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 2.5V, fSW = 700kHz, PWM MODE toc003 VIN = 5V VIN = 12V VIN = 24V VIN = 36V 100 EFFICIENCY (%) LOAD CURRENT (A) MAXM17630/MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 3.3V, fSW = 900kHz, PWM MODE toc004 VIN = 5V VIN = 12V VIN = 24V VIN = 36V 100 EFFICIENCY (%) LOAD CURRENT (A) MAXM17631/MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 5V, fSW = 1250kHz, PWM MODE toc005 VIN = 7V VIN = 12V VIN = 24V VIN = 36V 100 EFFICIENCY (%) LOAD CURRENT (A) MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 12V, fSW = 2150kHz, PWM MODE toc006 VIN = 20V VIN = 24V VIN = 36V 100 0.01 0.1 1 EFFICIENCY (%) LOAD CURRENT (A) MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 0.9V, fSW = 400kHz, PFM MODE toc007 VIN = 5V VIN = 24VVIN = 12V 100 0.01 0.1 1 EFFICIENCY (%) LOAD CURRENT (A) MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 1.5V, fSW = 480kHz, PFM MODE toc008 VIN = 5V VIN = 12V VIN = 24V VIN = 36V 100 0.01 0.1 1 EFFICIENCY (%) LOAD CURRENT (A) MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 2.5V, fSW = 700kHz, PFM MODE toc009 VIN = 5V VIN = 24V VIN = 12V VIN = 36V Maxim Integrated │ 6 www.maximintegrated.com MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

(VEN/UVLO = VIN = 24V, VSGND = VPGND = 0V, CVCC = 2.2μF, CBST = 0.1μF, CSS = 5600pF, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted.) Typical Operating Characteristics (continued) 100 0.01 0.1 1 EFFICIENCY (%) LOAD CURRENT (A) MAXM17630/MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 3.3V, fSW = 900kHz, PFM MODE toc010 VIN = 5V VIN = 24V VIN = 12V VIN = 36V 100 0.01 0.1 1 EFFICIENCY (%) LOAD CURRENT (A) MAXM17631/MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 5V, fSW = 1250kHz, PFM MODE toc011 VIN = 7V VIN = 24V VIN = 12V VIN = 36V 100 0.01 0.1 1 EFFICIENCY (%) LOAD CURRENT (A) MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 12V, fSW = 2150kHz, PFM MODE toc012 VIN = 20V VIN = 24V VIN = 36V 100 0.01 0.1 1 EFFICIENCY (%) LOAD CURRENT (A) MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 0.9V, fSW = 400kHz, DCM MODE toc013 VIN = 5V VIN = 24V VIN = 12V 100 0.01 0.1 1 EFFICIENCY (%) LOAD CURRENT (A) MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 1.5V, fSW = 480kHz, DCM MODE toc014 VIN = 5V VIN = 24V VIN = 12V VIN = 36V 100 0.01 0.1 1 EFFICIENCY (%) LOAD CURRENT (A) MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 2.5V, fSW = 700kHz, DCM MODE toc015 VIN = 5V VIN = 24V VIN = 12V VIN = 36V 100 0.01 0.1 1 EFFICIENCY (%) LOAD CURRENT (A) MAXM17630/MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 3.3V, fSW = 900kHz, DCM MODE toc016 VIN = 5V VIN = 24V VIN = 12V VIN = 36V 100 0.01 0.1 1 EFFICIENCY (%) LOAD CURRENT (A) MAXM17631/MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 5V, fSW = 1250kHz, DCM MODE toc017 VIN = 7V VIN = 24V VIN = 12V VIN = 36V 100 0.01 0.1 1 EFFICIENCY (%) LOAD CURRENT (A) MAXM17632 EFFICIENCY vs. LOAD CURRENT VOUT = 12V, fSW = 2150kHz, DCM MODE toc018 VIN = 20V VIN = 24V VIN = 36V Maxim Integrated │ 7 www.maximintegrated.com MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

(VEN/UVLO = VIN = 24V, VSGND = VPGND = 0V, CVCC = 2.2μF, CBST = 0.1μF, CSS = 5600pF, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted.) Typical Operating Characteristics (continued) 0.889 0.892 0.895 0.898 0.901 0.904 0.907 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 0.9V, fSW = 400kHz, PWM MODE toc019 VIN = 12V VIN = 5V VIN = 24V 1.490 1.491 1.492 1.493 1.494 1.495 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 1.5V, fSW = 480kHz, PWM MODE toc020 VIN = 36V VIN = 12V VIN = 24V VIN = 5V 2.500 2.502 2.504 2.506 2.508 2.510 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 2.5V, fSW = 700kHz, PWM MODE toc021 VIN = 5VVIN = 12V VIN = 24V VIN = 36V 3.280 3.288 3.296 3.304 3.312 3.320 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17630/MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 3.3V, fSW = 900kHz, PWM MODE toc022 VIN = 36VVIN = 5V VIN = 24V VIN = 12V 5.03 5.04 5.05 5.06 5.07 5.08 5.09 5.10 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17631/MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 5V, fSW = 1250kHz, PWM MODE toc023 VIN = 36VVIN = 24V VIN = 12V VIN = 7V 12.00 12.02 12.04 12.06 12.08 12.10 12.12 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 12V, fSW = 2150kHz, PWM MODE toc024 VIN = 36VVIN = 24V VIN = 20V 0.89 0.90 0.91 0.92 0.93 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 0.9V, fSW = 400kHz, PFM MODE toc025 VIN = 5V VIN = 12V VIN = 24V 1.48 1.49 1.50 1.51 1.52 1.53 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 1.5V, fSW = 480kHz, PFM MODE toc026 VIN = 5V VIN = 24V VIN = 12V VIN = 36V 2.49 2.50 2.51 2.52 2.53 2.54 2.55 2.56 2.57 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 2.5V, fSW = 700kHz, PFM MODE toc027 VIN = 5V VIN = 24V VIN = 12V VIN = 36V Maxim Integrated │ 8 www.maximintegrated.com MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

(VEN/UVLO = VIN = 24V, VSGND = VPGND = 0V, CVCC = 2.2μF, CBST = 0.1μF, CSS = 5600pF, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted.) Typical Operating Characteristics (continued) 3.28 3.30 3.32 3.34 3.36 3.38 3.40 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17630/MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 3.3V, fSW = 900kHz, PFM MODE toc028 VIN = 36V VIN = 5V VIN = 24V VIN = 12V 5.00 5.02 5.04 5.06 5.08 5.10 5.12 5.14 5.16 5.18 5.20 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17631/MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 5V, fSW = 1250kHz, PFM MODE toc029 VIN = 36V VIN = 12V VIN = 7V VIN = 24V 12.03 12.06 12.09 12.12 12.15 12.18 12.21 12.24 12.27 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 12V, fSW = 2150kHz, PFM MODE toc030 VIN = 36V VIN = 20V VIN = 24V 0.882 0.887 0.892 0.897 0.902 0.907 0.912 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 0.9V, fSW = 400kHz, DCM MODE toc031 VIN = 24V VIN = 5VVIN = 12V 1.490 1.491 1.492 1.493 1.494 1.495 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 1.5V, fSW = 480kHz, DCM MODE toc032 VIN = 5V VIN = 12V VIN = 24V VIN = 36V 2.490 2.495 2.500 2.505 2.510 2.515 2.520 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 2.5V, fSW = 700kHz, DCM MODE toc033 VIN = 5V VIN = 12V VIN = 24V VIN = 36V 3.280 3.288 3.296 3.304 3.312 3.320 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17630/MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 3.3V, fSW = 900kHz, DCM MODE toc034 VIN = 36V VIN = 5V VIN = 24V VIN = 12V 5.04 5.05 5.06 5.07 5.08 5.09 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17631/MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 5V, fSW = 1250kHz, DCM MODE toc035 VIN = 36V VIN = 24V VIN = 12VVIN = 7V 12.00 12.02 12.04 12.06 12.08 12.10 12.12 OUTPUT VOLTAGE (V) LOAD CURRENT (A) MAXM17632 OUTPUT VOLTAGE vs. LOAD CURRENT VOUT = 12V, fSW = 2150kHz, DCM MODE toc036 VIN = 36VVIN = 24V VIN = 20V Maxim Integrated │ 9 www.maximintegrated.com MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

(VEN/UVLO = VIN = 24V, VSGND = VPGND = 0V, CVCC = 2.2μF, CBST = 0.1μF, CSS = 5600pF, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted.) Typical Operating Characteristics (continued) toc037 1µs/div VOUT(AC) 10mV/div MAXM17632 STEADY-STATE OUTPUT-VOLTAGE RIPPLE VOUT = 2.5V, fSW = 700kHz, FULL LOAD, PWM MODE toc038 1µs/div VOUT(AC) 10mV/div MAXM17630/MAXM17632 STEADY-STATE OUTPUT-VOLTAGE RIPPLE VOUT = 3.3V, fSW = 900kHz, FULL LOAD, PWM MODE toc039 1µs/div VOUT(AC) 10mV/div MAXM17631/MAXM17632 STEADY-STATE OUTPUT-VOLTAGE RIPPLE VOUT = 5V, fSW = 1250kHz, FULL LOAD, PWM MODE toc040 400ns/div VOUT(AC) 20mV/div MAXM17632 STEADY-STATE OUTPUT-VOLTAGE RIPPLE VOUT = 12V, fSW = 2150kHz, FULL LOAD, PWM MODE toc041 40µs/div VOUT(AC) 20mV/div MAXM17632 STEADY-STATE OUTPUT-VOLTAGE RIPPLE VOUT = 2.5V, fSW = 700kHz, 10mA LOAD, PFM MODE toc042 40µs/div VOUT(AC) 50mV/div MAXM17630/MAXM17632 STEADY-STATE OUTPUT-VOLTAGE RIPPLE VOUT = 3.3V, fSW = 900kHz, 10mA LOAD, PFM MODE toc043 40µs/div VOUT(AC) 50mV/div MAXM17631/MAXM17632 STEADY-STATE OUTPUT-VOLTAGE RIPPLE VOUT = 5V, fSW = 1250kHz, 10mA LOAD, PFM MODE toc044 40µs/div V0UT(AC) 100mV/div MAXM17632 STEADY-STATE OUTPUT-VOLTAGE RIPPLE VOUT = 12V, fSW = 2150kHz, 10mA LOAD, PFM MODE toc045 10µs/div VOUT(AC) 10mV/div MAXM17632 STEADY-STATE OUTPUT-VOLTAGE RIPPLE VOUT = 2.5V, fSW = 700kHz, 10mA LOAD, DCM MODE Maxim Integrated │ 10 www.maximintegrated.com MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

(VEN/UVLO = VIN = 24V, VSGND = VPGND = 0V, CVCC = 2.2μF, CBST = 0.1μF, CSS = 5600pF, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted.) Typical Operating Characteristics (continued) toc046 10µs/div VOUT(AC) 10mV/div MAXM17630/MAXM17632 STEADY-STATE OUTPUT-VOLTAGE RIPPLE VOUT = 3.3V, fSW = 900kHz, 10mA LOAD, DCM MODE toc047 4µs/div VOUT(AC) 10mV/div MAXM17631/MAXM17632 STEADY-STATE OUTPUT-VOLTAGE RIPPLE VOUT = 5V, fSW = 1250kHz, 10mA LOAD, DCM MODE toc048 400ns/div VOUT(AC) 10mV/div MAXM17632 STEADY-STATE OUTPUT-VOLTAGE RIPPLE VOUT = 12V, fSW = 2150kHz, 10mA LOAD, DCM MODE 50mV/div 500mA/div toc049 200µs/div VOUT(AC) IOUT MAXM17632 LOAD-TRANSIENT RESPONSE VOUT = 2.5V, fSW = 700kHz, PWM MODE (LOAD CURRENT STEPPED FROM 0A TO 0.5A) 50mV/div 500mA/div toc050 200µs/div VOUT(AC) IOUT MAXM17632 LOAD-TRANSIENT RESPONSE VOUT = 2.5V, fSW = 700kHz, PWM MODE (LOAD CURRENT STEPPED FROM 0.5A TO 1A) 100mV/div 500mA/div toc051 400µs/div VOUT(AC) IOUT MAXM17632 LOAD-TRANSIENT RESPONSE VOUT = 2.5V, fSW = 700kHz, PFM MODE (LOAD CURRENT STEPPED FROM 10mA TO 0.5A) 100mV/div 500mA/div toc052 200µs/div VOUT(AC) IOUT MAXM17632 LOAD-TRANSIENT RESPONSE VOUT = 2.5V, fSW = 700kHz, DCM MODE (LOAD CURRENT STEPPED FROM 10mA TO 0.5A) 100mV/div 500mA/div toc053 200µs/div VOUT(AC) IOUT MAXM17630/MAXM17632 LOAD-TRANSIENT RESPONSE VOUT = 3.3V, fSW = 900kHz, PWM MODE (LOAD CURRENT STEPPED FROM 0A TO 0.5A) 100mV/div 500mA/div toc054 200µs/div VOUT(AC) IOUT MAXM17630/MAXM17632 LOAD-TRANSIENT RESPONSE VOUT = 3.3V, fSW = 900kHz, PWM MODE (LOAD CURRENT STEPPED FROM 0.5A TO 1A) Maxim Integrated │ 11 www.maximintegrated.com MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

(VEN/UVLO = VIN = 24V, VSGND = VPGND = 0V, CVCC = 2.2μF, CBST = 0.1μF, CSS = 5600pF, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted.) Typical Operating Characteristics (continued) 100mV/div 500mA/div toc055 400µs/div VOUT(AC) IOUT MAXM17630/MAXM17632 LOAD-TRANSIENT RESPONSE VOUT = 3.3V, fSW = 900kHz, PFM MODE (LOAD CURRENT STEPPED FROM 10mA TO 0.5A) 200mV/div 500mA/div toc056 200µs/div VOUT(AC) IOUT MAXM17630/MAXM17632 LOAD-TRANSIENT RESPONSE VOUT = 3.3V, fSW = 900kHz, DCM MODE (LOAD CURRENT STEPPED FROM 10mA TO 0.5A) 100mV/div 500mA/div toc057 200µs/div VOUT(AC) IOUT MAXM17631/MAXM17632 LOAD-TRANSIENT RESPONSE VOUT = 5V, fSW = 1250kHz, PWM MODE (LOAD CURRENT STEPPED FROM 0A TO 0.5A) 100mV/div 500mA/div toc058 200µs/div VOUT(AC) IOUT MAXM17631/MAXM17632 LOAD-TRANSIENT RESPONSE VOUT = 5V, fSW = 1250kHz, PWM MODE (LOAD CURRENT STEPPED FROM 0.5A TO 1A) 200mV/div 500mA/div toc059 400µs/div VOUT(AC) IOUT MAXM17631/MAXM17632 LOAD-TRANSIENT RESPONSE VOUT = 5V, fSW = 1250kHz, PFM MODE (LOAD CURRENT STEPPED FROM 10mA TO 0.5A) 200mV/div 500mA/div toc060 200µs/div VOUT(AC) IOUT MAXM17631/MAXM17632 LOAD-TRANSIENT RESPONSE VOUT = 5V, fSW = 1250kHz, DCM MODE (LOAD CURRENT STEPPED FROM 10mA TO 0.5A) 200mV/div 500mA/div toc061 200µs/div VOUT(AC) IOUT MAXM17632 LOAD-TRANSIENT RESPONSE VOUT = 12V, fSW = 2150kHz, PWM MODE (LOAD CURRENT STEPPED FROM 0A TO 0.5A) 200mV/div 500mA/div toc062 200µs/div VOUT(AC) IOUT MAXM17632 LOAD-TRANSIENT RESPONSE VOUT = 12V, fSW = 2150kHz, PWM MODE (LOAD CURRENT STEPPED FROM 0.5A TO 1A) 500mV/div 500mA/div toc063 400µs/div VOUT(AC) IOUT MAXM17632 LOAD-TRANSIENT RESPONSE VOUT = 12V, fSW = 2150kHz, PFM MODE (LOAD CURRENT STEPPED FROM 10mA TO 0.5A) Maxim Integrated │ 12 www.maximintegrated.com MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

(VEN/UVLO = VIN = 24V, VSGND = VPGND = 0V, CVCC = 2.2μF, CBST = 0.1μF, CSS = 5600pF, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted.) Typical Operating Characteristics (continued) 200mV/div 500mA/div toc064 200µs/div VOUT(AC) IOUT MAXM17632 LOAD-TRANSIENT RESPONSE VOUT = 12V, fSW = 2150kHz, DCM MODE (LOAD CURRENT STEPPED FROM 10mA TO 0.5A) 5V/div toc065 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM17632 STARTUP THROUGH ENABLE VOUT = 2.5V, fSW = 700kHz, FULL LOAD, PWM MODE LX 1V/div RESET 1V/div toc066 100µs/div EN/UVLO VOUT 5V/div MAXM17632 SHUTDOWN THROUGH ENABLE VOUT = 2.5V, fSW = 700kHz, FULL LOAD, PWM MODE 20V/div RESET 5V/div LX 5V/div toc067 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM17632 STARTUP THROUGH ENABLE VOUT = 2.5V, fSW = 700kHz, 10mA LOAD, PFM MODE LX 1V/div RESET 1V/div toc068 10ms/div EN/UVLO VOUT 5V/div MAXM17632 SHUTDOWN THROUGH ENABLE VOUT = 2.5V, fSW = 700kHz, 10mA LOAD, PFM MODE 20V/div RESET 5V/div LX 5V/div toc069 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM17630/MAXM17632 STARTUP THROUGH ENABLE VOUT = 3.3V, fSW = 900kHz, FULL LOAD, PWM MODE LX 2V/div RESET 2V/div toc070 100µs/div EN/UVLO VOUT 5V/div MAXM17630/MAXM17632 SHUTDOWN THROUGH ENABLE VOUT = 3.3V, fSW = 900kHz, FULL LOAD, PWM MODE 20V/div RESET 5V/div LX 5V/div toc071 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM17630/MAXM17632 STARTUP THROUGH ENABLE VOUT = 3.3V, fSW = 900kHz, 10mA LOAD, PFM MODE LX 2V/div RESET 2V/div toc072 10ms/div EN/UVLO VOUT 5V/div MAXM17630/MAXM17632 SHUTDOWN THROUGH ENABLE VOUT = 3.3V, fSW = 900kHz, 10mA LOAD, PFM MODE 20V/div RESET 5V/div LX Maxim Integrated │ 13 www.maximintegrated.com MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

(VEN/UVLO = VIN = 24V, VSGND = VPGND = 0V, CVCC = 2.2μF, CBST = 0.1μF, CSS = 5600pF, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted.) Typical Operating Characteristics (continued) 5V/div toc073 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM17631/MAXM17632 STARTUP THROUGH ENABLE VOUT = 5V, fSW = 1250kHz, FULL LOAD, PWM MODE LX 2V/div RESET 2V/div toc074 100µs/div EN/UVLO VOUT 5V/div MAXM17631/MAXM17632 SHUTDOWN THROUGH ENABLE VOUT = 5V,fSW = 1250kHz, FULL LOAD, PWM MODE 20V/div RESET 5V/div LX 5V/div toc075 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM17631/MAXM17632 STARTUP THROUGH ENABLE VOUT = 5V, fSW = 1250kHz, 10mA LOAD, PFM MODE LX 2V/div RESET 2V/div toc076 10ms/div EN/UVLO VOUT 5V/div MAXM17631/MAXM17632 SHUTDOWN THROUGH ENABLE VOUT = 5V, fSW = 1250kHz, 10mA LOAD, PFM MODE 20V/div RESET 5V/div LX 1V/div toc077 1ms/div VIN VCC 20V/div 20V/div MAXM17632 STARTUP THROUGH VIN VOUT = 2.5V, fSW = 700kHz, FULL LOAD, PWM MODE LX 2V/div VOUT 1V/div toc078 2ms/div VIN VCC 20V/div 20V/div MAXM17632 SHUTDOWN THROUGH VIN VOUT = 2.5V, fSW = 700kHz, FULL LOAD, PWM MODE LX 2V/div VOUT 1V/div toc079 1ms/div VIN VCC 20V/div 20V/div MAXM17632 STARTUP THROUGH VIN VOUT = 2.5V, fSW = 700kHz, 10mA LOAD, PFM MODE LX 2V/div VOUT 1V/div toc080 10ms/div VIN VCC 20V/div 20V/div MAXM17632 SHUTDOWN THROUGH VIN VOUT = 2.5V, fSW = 700kHz, 10mA LOAD, PFM MODE LX 2V/div VOUT 2V/div toc081 1ms/div VIN VCC 20V/div 20V/div MAXM17630/MAXM17632 STARTUP THROUGH VIN VOUT = 3.3V, fSW = 900kHz, FULL LOAD, PWM MODE LX 2V/div VOUT Maxim Integrated │ 14 www.maximintegrated.com MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

(VEN/UVLO = VIN = 24V, VSGND = VPGND = 0V, CVCC = 2.2μF, CBST = 0.1μF, CSS = 5600pF, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted.) Typical Operating Characteristics (continued) 2V/div toc082 2ms/div VIN VCC 20V/div 20V/div MAXM17630/MAXM17632 SHUTDOWN THROUGH VIN VOUT = 3.3V, fSW = 900kHz, FULL LOAD, PWM MODE LX 2V/div VOUT 2V/div toc083 1ms/div VIN VCC 20V/div 20V/div MAXM17630/MAXM17632 STARTUP THROUGH VIN VOUT = 3.3V, fSW = 900kHz, 10mA LOAD, PFM MODE LX 2V/div VOUT 2V/div toc084 10ms/div VIN VCC 20V/div 20V/div MAXM17630/MAXM17632 SHUTDOWN THROUGH VIN VOUT = 3.3V, fSW = 900kHz,10mA LOAD, PFM MODE LX 2V/div VOUT 2V/div toc085 1ms/div VIN VCC 20V/div 20V/div MAXM17631/MAXM17632 STARTUP THROUGH VIN VOUT = 5V, fSW = 1250kHz, FULL LOAD, PWM MODE LX 2V/div VOUT 2V/div toc086 2ms/div VIN VCC 20V/div 20V/div MAXM17631/MAXM17632 SHUTDOWN THROUGH VIN VOUT = 5V, fSW = 1250kHz, FULL LOAD, PWM MODE LX 2V/div VOUT 2V/div toc087 1ms/div VIN VCC 20V/div 20V/div MAXM17631/MAXM17632 STARTUP THROUGH VIN VOUT = 5V, fSW = 1250kHz, 10mA LOAD, PWM MODE LX 2V/div VOUT 2V/div toc088 10ms/div VIN VCC 20V/div 20V/div MAXM17631/MAXM17632 SHUTDOWN THROUGH VIN VOUT = 5V, fSW = 1250kHz, 10mA LOAD, PFM MODE LX 2V/div VOUT 5V/div toc089 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM17630/MAXM17632 STARTUP THROUGH ENABLE (2.5V PREBIAS) VOUT = 3.3V, fSW = 900kHz, 10mA LOAD, PWM MODE LX 2V/div RESET 5V/div toc090 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM17631/MAXM17632 STARTUP THROUGH ENABLE (3.3V PREBIAS) VOUT = 5V, fSW = 1250kHz, 10mA LOAD, PWM MODE LX 2V/div RESET Maxim Integrated │ 15 www.maximintegrated.com MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

(VEN/UVLO = VIN = 24V, VSGND = VPGND = 0V, CVCC = 2.2μF, CBST = 0.1μF, CSS = 5600pF, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted.) Typical Operating Characteristics (continued) 5V/div toc091 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM17632 STARTUP THROUGH ENABLE (5V PREBIAS) VOUT = 12V, fSW = 2150kHz, 10mA LOAD, PWM MODE LX 5V/div RESET 20V/div toc092 20ms/div SHORT VOUT 2V/div MAXM17632 OUTPUT SHORT IN STEADY STATE VOUT = 2.5V, fSW = 700kHz, FULL LOAD, PWM MODE 5V/div LX IOUT 1A/div 20V/div toc093 20ms/div VOUT 50mV/div MAXM17632 OUTPUT SHORT DURING STARTUP VOUT = 2.5V, fSW = 700kHz, FULL LOAD, PWM MODE 20V/div LX VIN IOUT 20mA/div 20V/div toc094 10ms/div SHORT VOUT 2V/div MAXM17630/MAXM17632 OUTPUT SHORT IN STEADY STATE VOUT = 3.3V, fSW = 900kHz, FULL LOAD, PWM MODE 5V/div LX IOUT 1A/div 20V/div toc095 10ms/div VOUT 50mV/div MAXM17630/MAXM17632 OUTPUT SHORT DURING STARTUP VOUT = 3.3V, fSW = 900kHz, FULL LOAD, PWM MODE 20V/div LX VIN IOUT 20mA/div 20V/div toc096 10ms/div SHORT VOUT 5V/div MAXM17631/MAXM17632 OUTPUT SHORT IN STEADY STATE VOUT = 5V, fSW = 1250kHz, FULL LOAD, PWM MODE 5V/div LX IOUT 1A/div 20V/div toc097 10ms/div VOUT 50mV/div MAXM17631/MAXM17632 OUTPUT SHORT DURING STARTUP VOUT = 5V, fSW = 1250kHz, FULL LOAD, PWM MODE 20V/div LX VIN IOUT 20mA/div toc098 2µs/div MAXM17631/MAXM17632 EXT CLOCK SYNC VOUT = 5V, fSW = 1.25MHz, fSYNC = 1.75MHz, FULL LOAD, PWM MODE 5V/divVSYNC LX 20V/div toc099 20µs/div MAXM17631/MAXM17632 EXT CLOCK SYNC VOUT = 5V, fSW = 1.25MHz, fSYNC = 1.75MHz, FULL LOAD, PWM MODE 5V/divVSYNC LX 20V/div VOUT(AC) 50mV/div Maxim Integrated │ 16 www.maximintegrated.com MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

(VEN/UVLO = VIN = 24V, VSGND = VPGND = 0V, CVCC = 2.2μF, CBST = 0.1μF, CSS = 5600pF, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted.) Typical Operating Characteristics (continued) -40 -20 100 120 1k 10k 100k -40 -30 -20 -10 PHASE (°) GAIN (dB) FREQUENCY (Hz) GAIN toc100 PHASE CROSSOVER FREQUENCY = 58.39kHz PHASE MARGIN = 65.979° MAXM17632 BODE PLOT VOUT = 2.5V, fSW = 700kHz, FULL LOAD, PWM MODE -40 -20 100 120 1k 10k 100k -40 -30 -20 -10 PHASE (°) GAIN (dB) FREQUENCY (Hz) GAIN toc101 PHASE CROSSOVER FREQUENCY = 70.472kHz PHASE MARGIN = 68.213° MAXM17630/MAXM17632 BODE PLOT VOUT = 3.3V, fSW = 900kHz, FULL LOAD, PWM MODE -40 -20 100 120 1k 10k 100k -40 -30 -20 -10 PHASE (°) GAIN (dB) FREQUENCY (Hz) GAIN toc102 PHASE CROSSOVER FREQUENCY = 67.974kHz PHASE MARGIN = 72.884° MAXM17631/MAXM17632 BODE PLOT VOUT = 5V, fSW = 1250kHz, FULL LOAD, PWM MODE -40 -20 100 120 1k 10k 100k -40 -30 -20 -10 PHASE (°) GAIN (dB) FREQUENCY (Hz) GAIN toc103 PHASE CROSSOVER FREQUENCY = 89.832kHz PHASE MARGIN = 70.697° MAXM17632 BODE PLOT VOUT = 12V, fSW = 1250kHz, FULL LOAD, PWM MODE 0.25 0.5 0.75 1.25 25 35 45 55 65 75 85 95 105 115 125 OUTPUT CURRENT (A) AMBIENT TEMPERATURE (°C) MAXM17630/MAXM17631/MAXM17632 OUTPUT CURRENT vs. AMBIENT TEMPERATURE toc104 VOUT = 3.3V VOUT = 5V VOUT = 12V MEASURED ON MAXM17630/MAXM17631/MAXM17632 EV KIT toc107 FREQUENCY (Hz) MAXM17630/MAXM17632 RADIATED EMISSIONS PLOT VOUT = 3.3V, fSW = 900kHz, FULL LOAD, PWM MODE MAGNITUDE (dBµV/m) -10 MEASURED ON MAXM17630 EV KIT 30M 100M 1G TUV Rheinland Maxim Ic_Buck Converter_Max M 17635 3.3V Output RE 30MHz-1GHz 30.0M 100.0M 1.0G Fr equency (H z) -10.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 Ampl i t ude ( dBuV/ m) 07:48:07 PM, Wednesday, Apr il 17, 2019 RE 30MHz-1GHz_0-360Deg_90Deg step_1-4m tr Height_Quick S can_Config 5.TIL Final_S canV Final_S canH Lim it CISPR-22 CLASS B QP LIMIT VERTICAL SCAN HORIZONTAL SCAN TUV Rheinland Maxim Ic_Buck Converter_Max M 17632 5V Output RE 30MHz-1GHz 30.0M 100.0M 1.0G Fr equency (H z) -10.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 Ampl i t ude ( dBuV/ m) 08:12:41 PM, Wednesday, Apr il 17, 2019 RE 30MHz-1GHz_0-360Deg_90Deg step_1-4m tr Height_Quick S can_Config 6.TIL Final_S canV Final_S canH Lim it toc108 FREQUENCY (Hz) MAXM17631/MAXM17632 RADIATED EMISSIONS PLOT VOUT = 5V, fSW = 1250kHz, FULL LOAD, PWM MODE MAGNITUDE (dBµV/m) -10 MEASURED ON MAXM17631 EV KIT 30M 100M 1G HORIZONTAL SCAN CISPR-22 CLASS B QP LIMIT VERTICAL SCAN Maxim Integrated │ 17 www.maximintegrated.com MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

1 LX Switching node of the inductor. No external connection to this pin. 2 BST Bootstrap Capacitor. Connect a 0.1μF ceramic capacitor between BST and LX. 3 EXTVCC External Power Supply Input Reduces the Internal-LDO loss. Connect it to output when OUT is programmed to 5V only. When EXTVCC is not used, connect it to SGND. 4, 5 OUT Module Output Pin. Connect a capacitor from OUT to GND. See the PCB Layout Guidelines section for more details. 6 FB Feedback Input. Connect the output voltage node (VOUT) to FB for MAXM17630 and MAXM17631. Connect FB to the center node of an external resistor-divider from the output to SGND to set the output voltage for MAXM17632. See the Output Voltage Setting section for more details. 7, 8 SGND Analog Ground 9 RT Switching Frequency Settings. Connect a resistor from RT to SGND to set the regulator’s switching frequency between 400kHz and 2.2MHz. Leave RT open for the default 400kHz frequency. See the Setting the Switching Frequency (RT) section for more details. 10 SS Soft-Start Input. Connect a capacitor from SS to SGND to set the soft-start time. Pin Configuration MAXM17630 MAXM17631 MAXM17632 EN MODE/SYNCEXTVCC OUT FB RESET RT VCC 6 9 TOP VIEW ‘ ‘ INDICATES PIN 1 OF THE MODULE LX BST VINPGND OUT SGND SS 16 15 PGND (EP) 7 8 SGND Pin Description www.maximintegrated.com Maxim Integrated │ 18 MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

11 RESET

Open-Drain Power Good Output. The RESET output is driven low if FB drops below 92% of its set value. RESET goes high 1024 cycles after FB rises above 95% of its set value. See the Electrical Characteristics table for threshold values

12 MODE/SYNC

MODE/SYNC Pin Configures the Device to Operate either in PWM, PFM or DCM Modes of Opera- tion. Leave MODE/SYNC open for PFM operation (pulse skipping at light loads). Connect MODE/ SYNC to SGND for constant-frequency PWM operation at all loads. Connect MODE/SYNC to VCC for DCM operation at light loads. The device can be synchronized to an external clock using this pin. 13 VCC 5V LDO Output. Bypass VCC with a 2.2μF ceramic capacitor to SGND.

14 EN/UVLO

Enable/Undervoltage Lockout Pin. Drive EN/UVLO high to enable the output. Connect to the center of the resistor-divider between VIN and SGND to set the input voltage at which the part turns on. Connect to the VIN pin for always on operation. Pull low for disabling the device.

15 VIN

Power-Supply Input Pin. 4.5V to 36V input-supply range. Decouple to PGND with a capacitor; place the capacitor close to the VIN and PGND pins. 16 PGND Power Ground Pin of the module. Connect externally to the power ground plane. Refer to the MAXM17630 Evaluation Kit (EV kit) data sheet for a layout example. - EP Exposed Pad. Always connect EP to the PGND pin of the module. Also, connect EP to a large PGND plane with several thermal vias for best thermal performance. Refer to the MAXM17630 EV kit data sheet for an example of the correct method for EP connection and thermal vias. Pin Description (continued) www.maximintegrated.com Maxim Integrated │ 19 MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

1.215V MAXM17630/MAXM17631/MAXM17632 2.2µH EN/UVLO VIN RESET PGND LX OUT FB SS SOFT-START HIGH-SIDE DRIVER OSCILLATOR MODE SELECTION LOGIC SLOPE COMPENSATION LOW-SIDE DRIVER RT RB *S2 *S1 EXTVCC RT MODE/ SYNC SYNC SYNC BST SGND ENOK ERROR AMPLIFIER/ LOOP COMPENSATION *S3 * REFER TO TABLE A TABLE A MODULE PART NUMBER MAXM17630 MAXM17631 MAXM17632 S1 S2 S3 RT (kΩ) RB (kΩ) 229 OPEN OPEN OPEN OPEN OPEN OPEN CLOSED CLOSED CLOSED CLOSED CLOSED 241.6 www.maximintegrated.com Maxim Integrated │ 20 MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

The MAXM17630/MAXM17631/MAXM17632 are a family of high-efficiency, high voltage, synchronous step-down DC-DC modules with integrated controller, MOSFETs, compensation components, and inductor that operate over a wide input-voltage range of 4.5V to 36V. The modules can deliver up to 1A current. MAXM17630 and MAXM17631 are fixed 3.3V and fixed 5V output parts, respectively. MAXM17632 is the adjustable output voltage (0.9V to 12V) part. Built-in compensation across the out - put-voltage range eliminates the need for external com - pensation components. The feedback-voltage regulation accuracy over -40°C to +125°C is ±1.2% for MAXM17630/ MAXM17631/MAXM17632. The modules feature a peak-current-mode control archi - tecture. An internal transconductance error amplifier produces an integrated error voltage at an internal node, which sets the duty cycle using a PWM comparator, a high-side current-sense amplifier, and a slope-compen - sation generator. At each rising edge of the clock, the high-side MOSFET turns on and remains on until either the appropriate or maximum duty cycle is reached, or the peak current limit is detected. During the high-side MOSFET on-time, the inductor current ramps up. During the second half of the switching cycle, the high-side MOSFET turns off and the low-side MOSFET turns on. The inductor releases the stored energy as its current ramps down and provides current to the output. The module features a MODE/SYNC pin that can be used to operate the device in PWM, or PFM, or DCM control modes. The module integrates adjustable-input undervolt- age lockout, adjustable soft-start, open-drain RESET, and external frequency synchronization features. Mode Selection and External Synchronization (MODE/SYNC) The MAXM17630/MAXM17631/MAXM17632 support PWM, PFM, and DCM mode of operation. The device enters the required mode of operation based on the set - ting of the MODE/SYNC pin as detected within 1.5ms after V CC and EN/UVLO voltages exceed their respec - tive UVLO rising thresholds (V CC-UVR, and VENR). If the MODE/SYNC pin is open, the module operates in PFM mode at light loads. If the state of the MODE/SYNC pin is low (< V M-PWM), the module operates in constant-fre - quency PWM mode at all loads. If the state of the MODE/ SYNC pin is high (> V M-DCM), the module operates in DCM mode at light loads. During external clock synchronization, the module oper - ates in PWM mode irrespective of the mode of opera - tion detected. When 16 external clock rising edges are detected on the MODE/SYNC pin, the internal oscillator frequency set by the RT pin (fSW) changes to the external clock frequency, and the device transitions to PWM mode. The device remains in PWM mode until EN/UVLO or input power is cycled. The external clock frequency must be between 1.1 x f SW and 1.4 x f SW. The minimum exter - nal clock pulse width should be greater than 50ns. The off-time duration of the external clock should be at least 160ns. See the MODE/SYNC section in the Electrical Characteristics table for details. PWM Operation In PWM mode, the internal inductor current is allowed to go negative. PWM operation is useful in frequency sensi - tive applications and provides fixed switching frequency operation at all loads. However, PWM mode gives lower efficiency at light loads compared to PFM and DCM modes of operation. PFM Operation PFM mode disables negative output current in the induc - tor, and additionally skips pulses at light loads for better efficiency. In PFM mode, the inductor current is forced to a fixed peak of 700mA in every clock cycle until the output voltage rises to 102.3% of the nominal value. Once the output voltage reaches 102.3% of the nominal value, the high-side switch is turned OFF and the low-side switch is turned ON. Once the inductor current hits zero cross, LX goes to a high impedance state and the module enters hibernate operation until the load current discharges the output voltage to 101.1% of the nominal value. Most of the internal blocks are turned OFF in hibernate operation to save quiescent current. When the output voltage falls below 101.1% of the nominal value, the module comes out of hibernate operation, turns on all internal blocks, and commences the process of delivering pulses of energy until the output voltage reaches 102.3% of the nominal value. The module naturally comes out of PFM mode and serves load requirements when the module output demands more than 700mA peak. The advantage of PFM mode is higher efficiency at light loads because of lower quiescent current drawn from supply. The disadvantage is that the output-voltage ripple is higher compared to PWM or DCM modes of operation and switching frequency is not constant at light loads. www.maximintegrated.com Maxim Integrated │ 21 MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

forces the regulator off when V CC falls below V CC_UVF. chattering on power-up/power-down. for a few common switching frequencies. when the EN/UVLO pin goes below VENF. with the internal reference.

400 OPEN

Table 1. Switching Frequency

The MAXM17630/MAXM17631/MAXM17632 are designed to support a maximum load current of 1A. The inductor ripple current is calculated as follows: x x x x x where: VOUT = Steady-state output voltage VIN = Operating input voltage for given V OUT fSW = Switching Frequency in Hz L = Power module output inductance (2.2μH ±30%) in μH IOUT = Required output (load) current The following condition should be satisfied at the desired load current, IOUT. 2.32 Thermal Overload Protection Thermal overload protection limits the total power dis - sipation in the device. When the junction temperature exceeds +165°C, an on-chip thermal sensor shuts down the device, turns off the internal power MOSFETs, allow - ing the device to cool down. The thermal sensor turns the device on after the junction temperature cools by 10°C. Soft-start resets during thermal shutdown. Applications Information Input-Voltage Range The minimum and maximum operating input voltages for a given output voltage is calculated as follows: x x x x where: VOUT = Steady-state output voltage IOUT = Maximum load current fSW(MAX) = Maximum switching frequency in Hz tOFF-MIN(MAX) = Worst Case minimum switch off-time (160ns) tON-MIN(MAX) = Worst case minimum switch on-time (80ns). Also, for duty cycle > 0.5 x x x where fSW = Switching frequency in Hz Selection of Input Capacitor The input filter capacitor reduces peak currents drawn from the power source and reduces noise and voltage ripple on the input caused by the converter switching. The input capacitor RMS current requirement (I RMS) is defined by the following equation: x x where IOUT(MAX) is the maximum load current. IRMS has a maximum value when the input voltage equals twice the output voltage (VIN = 2 x VOUT). So, IRMS(MAX) = IOUT(MAX) Choose an input capacitor that exhibits less than +10°C temperature rise at the RMS input current for optimal long-term reliability. Use low-ESR ceramic capacitors with high-ripple-current capability at the input. X7R capacitors are recommended in industrial applications for their tem - perature stability. Calculate the input capacitance using the following equation: x xxI where DMAX = Maximum duty cycle fSW = Switching frequency ∆VIN = Allowable input voltage ripple In applications where the source is located distant from the device input, an appropriate electrolytic capacitor should be added in parallel to the ceramic capacitor to provide necessary damping for potential oscillations caused by the inductance of the longer input power path and input ceramic capacitor. www.maximintegrated.com Maxim Integrated │ 23 MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

are available from all major ceramic capacitor vendors. capacitor should be connected from the SS pin to SGND. reaches 64.4% of output nominal voltage. to turn on. Ensure that VINU is higher than 0.8 x V OUT. Figure 1. Adjustable EN/UVLO Network

resistive voltage-divider values. Table 2. Components selection for MAXM17630/MAXM17631/MAXM17632

21.5 N/A N/A 900

15.00 N/A N/A 1250

Figure 2. Setting Adjustable Output Voltage Figure 3. Setting Fixed Output Voltage

operating input voltage is beyond the V IN(MAX) specified in the above table up to 36V. desired operating conditions.

• Keep the input capacitors as close as possible to the IN and GND pins.
• Keep the output capacitors as close as possible to the OUT and GND pins.
• Keep the resistive feedback dividers as close as possible to the FB pin.
• Keep the power traces and load connections short. Refer to the MAXM17630/MAXM17631/MAXM17632 EV kit layout for first pass success.

Table 2. Components selection for MAXM17630/MAXM17631/MAXM17632 (continued)

Figure 4. Adjustable Output Layout Guidelines

Figure 5. Fixed Output Layout Guidelines

C1: MURATA 4.7µF/X7R/50V/1206 (GRM31CR71H475KA12) C2: TDK 2.2µF/X7R/6.3V/0603 (CGA3E1X7R0J225K080AC) C3: MURATA 5600pF/X7R/25V/0402 (GRM155R71E562KA01) C4: MURATA 22µF/X7R/25V/1210 (GRM32ER71E226KE15) C5: TDK 0.1µF/X7R/16V/0402 (CGA2B1X7R1C104K050BC) fSW: 900kHz MODE/SYNC = SGND for PWM mode MODE/SYNC = VCC for DCM mode MODE/SYNC = OPEN for PFM mode RESET EN/UVLO BST RT SGND VCC SS PGND LX VIN 5600pF EXTVCC VOUT MAXM17630 EP 4.7μF VIN 4.5V TO 36VC1 C4 OUT FB C2 C3 2.2μF 0.1μF 22µF 21.5kΩ MODE/SYNC 3.3V/1A C1: MURATA 4.7µF/X7R/50V/1206 (GRM31CR71H475KA12) C2: TDK 2.2µF/X7R/6.3V/0603 (CGA3E1X7R0J225K080AC) C3: MURATA 5600pF/X7R/25V/0402 (GRM155R71E562KA01) C4: MURATA 22µF/X7R/25V/1210 (GRM32ER71E226KE15) C5: TDK 0.1µF/X7R/16V/0402 (CGA2B1X7R1C104K050BC) fSW : 1250kHz MODE/SYNC = SGND FOR PWM MODE MODE/SYNC = VCC FOR DCM MODE MODE/SYNC = OPEN FOR PFM MODE 7V TO 36V RESET EN/UVLO BST RT SGND VCC SS PGND LX VIN 5600pF EXTVCC VOUT MAXM17631 EP 4.7μF VIN C1 C4 OUT FB C2 C3 2.2μF 0.1μF 22µF 15kΩ MODE/SYNC 5V/1A Typical Application Circuits Typical Application Circuit for Fixed 3.3V Output Typical Application Circuit for Fixed 5V output www.maximintegrated.com Maxim Integrated │ 29 MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

2.5V/1A C1: MURATA 4.7µF/X7R/50V/1206 (GRM31CR71H475KA12) C2: TDK 2.2µF/X7R/6.3V/0603 (CGA3E1X7R0J225K080AC) C3: MURATA 5600pF/X7R/25V/0402 (GRM155R71E562KA01) C4: MURATA 47µF/X7R/10V/1210 (GRM32ER71A476KE15) C5: TDK 0.1µF/X7R/16V/0402 (CGA2B1X7R1C104K050BC) fSW: 700kHz MODE/SYNC = SGND for PWM mode MODE/SYNC = VCC for DCM mode MODE/SYNC = OPEN for PFM mode RESET EN/UVLO BST RT SGND VCC SS PGND LX VIN 5600pF EXTVCC VOUT MAXM17632 EP 4.7μF VIN 4.5V TO 36VC1 C4 OUT FB C2 C3 137kΩ 76.8kΩ 2.2μF 0.1μF 47µF 28.4kΩ MODE/SYNC 12V/1A C1: MURATA 4.7µF/X7R/50V/1206 (GRM31CR71H475KA12) C2: TDK 2.2µF/X7R/6.3V/0603 (CGA3E1X7R0J225K080AC) C3: MURATA 5600pF/X7R/25V/0402 (GRM155R71E562KA01) C4: MURATA 10µF/X7R/25V/1210 (GRM32ER71H106KA12) C5: TDK 0.1µF/X7R/16V/0402 (CGA2B1X7R1C104K050BC) fSW: 2150kHz MODE/SYNC = SGND for PWM mode MODE/SYNC = VCC for DCM mode MODE/SYNC = OPEN for PFM mode RESET EN/UVLO BST RT SGND VCC SS PGND LX VIN 5600pF EXTVCC VOUT MAXM17632 EP 4.7μF VIN 20V TO 36VC1 C4 OUT FB C2 C3 634kΩ 51kΩ 2.2μF 0.1μF 10µF 8.2kΩ MODE/SYNC Typical Application Circuit for Adjustable 2.5V OUTPUT Typical Application Circuit for Adjustable 12V Output Typical Application Circuits (continued) www.maximintegrated.com Maxim Integrated │ 30 MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

PART NUMBER TEMP RANGE OUTPUT VOLTAGE (V) PIN-PACKAGE MAXM17630AME+ -40°C to +125°C 3.3 16-pin uSLIC MAXM17630AME+T -40°C to +125°C 3.3 16-pin uSLIC MAXM17631AME+ -40°C to +125°C 5 16-pin uSLIC MAXM17631AME+T -40°C to +125°C 5 16-pin uSLIC MAXM17632AME+ -40°C to +125°C Adjustable 16-pin uSLIC MAXM17632AME+T -40°C to +125ºC Adjustable 16-pin uSLIC + Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel.

Ordering Information

www.maximintegrated.com Maxim Integrated │ 31 MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

0 7/19 Initial release — 1 10/19 Removed future product designation from MAXM17632AME+ and MAXM17632AME+T in the Ordering Information table 31

1.1 Corrected typo in the General Description section 1

Revision History

Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2019 Maxim Integrated Products, Inc. │ 32 MAXM17630/MAXM17631/ MAXM17632 4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.