MAXM15065AMBT

MAXM15065 MAXIM

Document overview

• Manufacturer or author: Provided By digicamel.com
• PDF pages: 26

Technical content

The Himalaya series of voltage regulator ICs and power modules enable cooler, smaller, and simpler power-supply solutions. The MAXM15065/MAXM15066/MAXM15067 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 oper - ate from 4.5V to 60V input and deliver up to 300mA output current. The MAXM15065 and MAXM15066 are fixed 3.3V and 5V output modules respectively. The MAXM15067 is an adjustable output (0.9V to 6.3V) module. The modules significantly reduce design complexity, manufacturing risks, and offer a true plug and play power/supply solution, reducing time-to-market. The MAXM15065/MAXM15066/MAXM15067 modules employ peak-current-mode control architecture. To reduce input inrush current, the modules offer a fixed 3.75ms soft-start time. The MAXM15065/MAXM15066/MAXM15067 modules are available in a low profile, compact 10-pin, 2.6mm x 3mm x 1.5mm, uSLIC™ package.

Applications

• Industrial Sensors and Encoders
• 4-20mA Current-Loop Powered Sensors
• LDO Replacement
• HVAC and Building Control
• Battery-Powered Equipment
• General Purpose Point-of-Load
• USB Type-C Powered Loads Ordering Information appears at end of data sheet. uSLIC is a trademark of Maxim Integrated Products, Inc. 19-100508: Rev 0; 3/19 Benefits and Features
• Easy to Use
• Wide 4.5V to 60V Input
• Adjustable 0.9V to 6.3V Output
• Fixed 3.3V and 5V Output (MAXM15065 and MAXM15066)
• ±1.5% Feedback Accuracy
• Up to 300mA Output-Current
• Internally Compensated
• All Ceramic Capacitors
• High Efficiency
• Selectable PWM- or PFM-Mode of Operation
• Shutdown Current as Low as 2.2μA (typ)
• Flexible Design
• Internal Soft-Start and Prebias Startup
• Open-Drain Power Good Output (RESET Pin)
• Programmable EN/UVLO Threshold
• Robust Operation
• Hiccup Overcurrent 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 Typical Application Circuit 5VTypical Application Circuit 2.5V MAXM15066 VIN LX GND MODE OUT FB VOUT 5V, 300mA CIN 1µF COUT 10µF VIN 24V EN/UVLO RESET VCC 1µF MAXM15067 VIN LX GND MODE OUT FB VOUT 2.5V, 300mA CIN 1µF COUT 10µF R3 133kΩ 75kΩ VIN 24V 2.2MΩ 825kΩ RESET EN/UVLO VCC 1µF MAXM15065/MAXM15066/ MAXM15067 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module EVALUATION KIT AVAILABLE Click here for production status of specific part numbers.

(VIN = V EN/UVLO = 24V, V GND = 0V, C VCC = 1μF, FB = 1V (MAXM15067), FB = 3.6V (MAXM15065) FB = 5.5V (MAXM15066), LX = MODE = RESET = OUT = unconnected; T A = -40°C to +125°C, unless otherwise noted. Typical values are at T A = +25°C. All voltages are referenced to GND, unless otherwise noted.) (Note 3) 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. PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS INPUT SUPPLY (VIN) Input-Voltage Range VIN 4.5 60 V Input-Shutdown Current IIN-SH VEN/UVLO = 0V, shutdown mode 2.2 4 μA Input-Supply Current IQ-PFM MODE = unconnected, FB = 1.03 × VFB-REG 95 160 μA IQ-PWM Normal switching mode, VIN = 24V, MODE=0 3.2 mA ENABLE/UVLO (EN/UVLO) EN/UVLO Threshold VENR VEN/UVLO rising 1.19 1.215 1.28 VVENF VEN/UVLO falling 1.06 1.09 1.16 VEN-TRUESD VEN/UVLO falling, true shutdown 0.75 EN/UVLO Input-Leakage Current IEN/UVLO TA = +25°C -100 +100 nA LDO (VCC) VCC Output-Voltage Range VCC 6V < VIN < 60V, 0mA < IVCC < 10mA 4.75 5 5.25 V VCC Current Limit IVCC-MAX VCC = 4.3V 13 30 50 mA PACKAGE TYPE: 10-PIN uSLIC Package Code M102A3+2 Outline Number 21-100094 Land Pattern Number 90-100027 THERMAL RESISTANCE, FOUR-LAYER BOARD (Note 2) Junction to Ambient (θJA) 41.56 ºC/W 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 │ 2 MAXM15065/MAXM15066/ MAXM15067 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module

(VIN = V EN/UVLO = 24V, V GND = 0V, C VCC = 1μF, FB = 1V (MAXM15067), FB = 3.6V (MAXM15065) FB = 5.5V (MAXM15066), LX = MODE = RESET = OUT = unconnected; T A = -40°C to +125°C, unless otherwise noted. Typical values are at T A = +25°C. All voltages are referenced to GND, unless otherwise noted.) (Note 3) 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. PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS VCC Dropout VCC-DO VIN = 4.5V, IVCC = 5mA 0.15 0.3 V VCC UVLO VCC-UVR VCC rising 4.05 4.18 4.3 V VCC-UVF VCC falling 3.7 3.8 3.95 SOFT-START (SS) Soft-Start Time tSS 3.5 3.75 4 ms FEEDBACK (FB) FB-Regulation Voltage VFB-REG MODE = GND, MAXM15067 0.887 0.90 0.913 V MODE = unconnected, MAXM15067 0.887 0.915 0.936 MODE = GND, MAXM15065 3.25 3.30 3.35 MODE = unconnected, MAXM15065 3.25 3.35 3.42 MODE = GND, MAXM15066 4.93 5.00 5.07 MODE = unconnected, MAXM15066 4.93 5.08 5.18 FB-Leakage Current IFB MAXM15067 -100 -25 nA TIMING Switching Frequency fSW 515 550 585 kHz FB Undervoltage Trip Level to Cause Hiccup 62.5 64.5 66.5 % Hiccup Timeout 120 ms Minimum On-Time tON-MIN 90 120 ns Maximum Duty Cycle DMAX FB = 0.98 x FBREG 89 91.4 94 % RESET FB Threshold for RESET Rising FB rising 93.5 95.5 97.5 % FB Threshold for RESET Falling FB falling 90 92 94 % RESET Delay After FB Reaches Rising Threshold 1.9 ms RESET Output-Level Low IRESET = 5mA 0.2 V RESET Output-Leakage Current VRESET = 5.5V, TA = +25°C 0.1 μA MODE MODE Internal Pullup Resistor 500 kΩ THERMAL SHUTDOWN Thermal-Shutdown Threshold Temperature rising 166 °C Thermal-Shutdown Hysteresis 10 °C Electrical Characteristics (continued) www.maximintegrated.com Maxim Integrated │ 3 MAXM15065/MAXM15066/ MAXM15067 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module

(VIN = VEN/UVLO = 24V, VGND = 0V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to GND, unless otherwise noted. The circuit values for different output-voltage applications are as in Table 1, unless other- wise noted.) Typical Operating Characteristics 100 0 30 60 90 120 150 180 210 240 270 300 EFFICIENCY (%) LOAD CURRENT (mA) MAXM15067 EFFICIENCY vs. LOAD CURRENT ADJUSTABLE VOUT = 0.9V, PWM MODE toc01 VIN = 5V VIN = 12V 100 0 30 60 90 120 150 180 210 240 270 300 EFFICIENCY (%) LOAD CURRENT (mA) MAXM15067 EFFICIENCY vs. LOAD CURRENT ADJUSTABLE VOUT = 3.3V, PWM MODE toc04 VIN = 36V VIN = 5.5V VIN = 12V VIN = 24V VIN = 48V 100 0 30 60 90 120 150 180 210 240 270 300 EFFICIENCY (%) LOAD CURRENT (mA) MAXM15065 EFFICIENCY vs. LOAD CURRENT FIXED VOUT = 3.3V, PWM MODE toc07 VIN = 36V VIN = 5.5V VIN = 12V VIN = 24V VIN = 48V 100 0 30 60 90 120 150 180 210 240 270 300 EFFICIENCY (%) LOAD CURRENT (mA) MAXM15067 EFFICIENCY vs. LOAD CURRENT ADJUSTABLE VOUT = 1.5V, PWM MODE toc02 VIN = 5V VIN = 12V VIN = 20V 100 0 30 60 90 120 150 180 210 240 270 300 EFFICIENCY (%) LOAD CURRENT (mA) MAXM15067 EFFICIENCY vs. LOAD CURRENT ADJUSTABLE VOUT = 5V, PWM MODE toc05 VIN = 24V VIN = 12V VIN = 36V VIN = 48V VIN = 60V 100 0 30 60 90 120 150 180 210 240 270 300 EFFICIENCY (%) LOAD CURRENT (mA) MAXM15066 EFFICIENCY vs. LOAD CURRENT FIXED VOUT = 5V, PWM MODE toc08 VIN = 24V VIN = 12V VIN = 36V VIN = 48V VIN = 60V 100 0 30 60 90 120 150 180 210 240 270 300 EFFICIENCY (%) LOAD CURRENT (mA) MAXM15067 EFFICIENCY vs. LOAD CURRENT ADJUSTABLE VOUT = 2.5V, PWM MODE toc03 VIN = 5V VIN = 12V VIN = 24V VIN = 36V 100 0 30 60 90 120 150 180 210 240 270 300 EFFICIENCY (%) LOAD CURRENT (mA) MAXM15067 EFFICIENCY vs. LOAD CURRENT ADJUSTABLE VOUT = 6.3V, PWM MODE toc06 VIN = 24V VIN = 12V VIN = 36V VIN = 48V VIN = 60V 100 1 10 100 EFFICIENCY (%) LOAD CURRENT (mA) MAXM15067 EFFICIENCY vs. LOAD CURRENT ADJUSTABLE VOUT = 0.9V, PFM MODE toc09 VIN = 5V VIN = 12V Maxim Integrated │ 4 www.maximintegrated.com 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module MAXM15065/MAXM15066/ MAXM15067

(VIN = VEN/UVLO = 24V, VGND = 0V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to GND, unless otherwise noted. The circuit values for different output-voltage applications are as in Table 1, unless other- wise noted.) Typical Operating Characteristics (continued) 100 1 10 100 EFFICIENCY (%) LOAD CURRENT (mA) MAXM15067 EFFICIENCY vs. LOAD CURRENT ADJUSTABLE VOUT = 1.5V, PFM MODE toc10 VIN = 5V VIN =12V VIN = 20V 100 1 10 100 EFFICIENCY (%) LOAD CURRENT (mA) MAXM15067 EFFICIENCY vs. LOAD CURRENT ADJUSTABLE VOUT = 5V, PFM MODE toc13 VIN = 24V VIN = 12V VIN = 36V VIN = 48V VIN = 60V 100 1 10 100 EFFICIENCY (%) LOAD CURRENT (mA) MAXM15066 EFFICIENCY vs. LOAD CURRENT FIXED VOUT = 5V, PFM MODE toc16 VIN = 24V VIN = 12V VIN = 36V VIN = 60V VIN = 48V 100 1 10 100 EFFICIENCY (%) LOAD CURRENT (mA) MAXM15067 EFFICIENCY vs. LOAD CURRENT ADJUSTABLE VOUT = 2.5V, PFM MODE toc11 VIN = 24V VIN = 5V VIN = 12V VIN = 36V 100 1 10 100 EFFICIENCY (%) LOAD CURRENT (mA) MAXM15067 EFFICIENCY vs. LOAD CURRENT ADJUSTABLE VOUT = 6.3V, PFM MODE toc14 VIN = 24V VIN = 12V VIN = 36V VIN = 48V VIN = 60V 0.896 0.897 0.898 0.899 0.900 0.901 0.902 0.903 0.904 0 30 60 90 120 150 180 210 240 270 300 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) MAXM15067 OUTPUT VOLTAGE vs. LOAD CURRENT ADJUSTABLE VOUT = 0.9V, PWM MODE toc17 VIN = 12V VIN = 5V 100 1 10 100 EFFICIENCY (%) LOAD CURRENT (mA) MAXM15067 EFFICIENCY vs. LOAD CURRENT ADJUSTABLE VOUT = 3.3V, PFM MODE toc12 VIN = 24V VIN = 5.5V VIN = 12V VIN = 36V VIN = 48V 100 1 10 100 EFFICIENCY (%) LOAD CURRENT (mA) MAXM15065 EFFICIENCY vs. LOAD CURRENT FIXED VOUT = 3.3V, PFM MODE toc15 VIN=24V VIN = 5.5V VIN = 12V VIN = 36V VIN = 48V 1.484 1.486 1.488 1.490 1.492 1.494 1.496 1.498 1.500 0 30 60 90 120 150 180 210 240 270 300 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) MAXM15067 OUTPUT VOLTAGE vs. LOAD CURRENT ADJUSTABLE VOUT = 1.5V, PWM MODE toc18 VIN = 5V VIN = 12V VIN = 20V Maxim Integrated │ 5 www.maximintegrated.com 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module MAXM15065/MAXM15066/ MAXM15067

(VIN = VEN/UVLO = 24V, VGND = 0V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to GND, unless otherwise noted. The circuit values for different output-voltage applications are as in Table 1, unless other- wise noted.) Typical Operating Characteristics (continued) 2.450 2.456 2.462 2.468 2.474 2.480 2.486 2.492 2.498 2.504 0 30 60 90 120 150 180 210 240 270 300 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) MAXM15067 OUTPUT VOLTAGE vs. LOAD CURRENT ADJUSTABLE VOUT = 2.5V, PWM MODE toc19 VIN = 5V VIN = 36V VIN = 12V VIN = 24V 6.20 6.22 6.24 6.26 6.28 6.30 6.32 6.34 6.36 6.38 6.40 0 30 60 90 120 150 180 210 240 270 300 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) MAXM15067 OUTPUT VOLTAGE vs. LOAD CURRENT ADJUSTABLE VOUT = 6.3V, PWM MODE toc22 VIN = 36V VIN = 24V VIN = 12V VIN = 48V VIN = 60V 0.880 0.889 0.898 0.907 0.916 0.925 0.934 0 30 60 90 120 150 180 210 240 270 300 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) MAXM15067 OUTPUT VOLTAGE vs. LOAD CURRENT ADJUSTABLE VOUT = 0.9V, PFM MODE toc25 VIN = 5V VIN =12V 3.228 3.236 3.244 3.252 3.260 3.268 3.276 3.284 3.292 3.300 0 30 60 90 120 150 180 210 240 270 300 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) MAXM15067 OUTPUT VOLTAGE vs. LOAD CURRENT ADJUSTABLE VOUT = 3.3V, PWM MODE toc20 VIN = 36V VIN = 5.5V VIN = 24V VIN = 12V VIN = 48V 3.294 3.296 3.298 3.300 3.302 3.304 3.306 0 30 60 90 120 150 180 210 240 270 300 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) MAXM15065 OUTPUT VOLTAGE vs. LOAD CURRENT FIXED VOUT = 3.3V, PWM MODE toc23 VIN = 36V VIN = 5.5V VIN = 24VVIN = 12V VIN = 48V 1.48 1.49 1.50 1.51 1.52 1.53 1.54 1.55 0 30 60 90 120 150 180 210 240 270 300 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) MAXM15067 OUTPUT VOLTAGE vs. LOAD CURRENT ADJUSTABLE VOUT = 1.5V, PFM MODE toc26 VIN = 5V VIN = 20V VIN =12V 4.96 4.98 5.00 5.02 5.04 5.06 5.08 5.10 0 30 60 90 120 150 180 210 240 270 300 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) MAXM15067 OUTPUT VOLTAGE vs. LOAD CURRENT ADJUSTABLE VOUT = 5V, PWM MODE toc21 VIN = 36V VIN = 24V VIN = 12V VIN = 48V VIN = 60V 4.994 4.996 4.998 5.000 5.002 5.004 0 30 60 90 120 150 180 210 240 270 300 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) MAXM15066 OUTPUT VOLTAGE vs. LOAD CURRENT FIXED VOUT = 5V, PWM MODE toc24 VIN = 36VVIN = 12V VIN = 24V VIN = 60V VIN = 48V 2.44 2.46 2.48 2.50 2.52 2.54 2.56 2.58 0 30 60 90 120 150 180 210 240 270 300 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) MAXM15067 OUTPUT VOLTAGE vs. LOAD CURRENT ADJUSTABLE VOUT = 2.5V, PFM MODE toc27 VIN = 36V VIN = 5V VIN = 24V VIN =12V Maxim Integrated │ 6 www.maximintegrated.com 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module MAXM15065/MAXM15066/ MAXM15067

(VIN = VEN/UVLO = 24V, VGND = 0V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to GND, unless otherwise noted. The circuit values for different output-voltage applications are as in Table 1, unless other- wise noted.) Typical Operating Characteristics (continued) 3.25 3.27 3.29 3.31 3.33 3.35 3.37 3.39 0 30 60 90 120 150 180 210 240 270 300 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) MAXM15067 OUTPUT VOLTAGE vs. LOAD CURRENT ADJUSTABLE VOUT = 3.3V, PFM MODE toc28 VIN = 36V VIN = 5.5V VIN = 24V VIN =12V VIN = 48V 3.25 3.27 3.29 3.31 3.33 3.35 3.37 3.39 0 30 60 90 120 150 180 210 240 270 300 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) MAXM15065 OUTPUT VOLTAGE vs. LOAD CURRENT FIXED VOUT = 3.3V, PFM MODE toc31 VIN = 36V VIN = 5.5V VIN = 24V VIN = 12V VIN = 48V toc34 2µs/div VOUT(AC) 10mV/div MAXM15067 OUTPUT VOLTAGE RIPPLE VIN = 24V, ADJUSTABLE VOUT = 3.3V, FULL LOAD, PWM MODE 5.00 5.04 5.08 5.12 5.16 5.20 0 30 60 90 120 150 180 210 240 270 300 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) MAXM15067 OUTPUT VOLTAGE vs. LOAD CURRENT ADJUSTABLE VOUT = 5V, PFM MODE toc29 VIN = 36V VIN = 24V VIN = 12V VIN = 48V VIN = 60V 4.960 4.985 5.010 5.035 5.060 5.085 5.110 0 30 60 90 120 150 180 210 240 270 300 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) MAXM15066 OUTPUT VOLTAGE vs. LOAD CURRENT FIXED VOUT = 5V, PFM MODE toc32 VIN = 36V VIN = 24V VIN = 12V VIN = 60V VIN = 48V toc35 2µs/div VOUT(AC) 10mV/div MAXM15067 OUTPUT VOLTAGE RIPPLE VIN = 24V, ADJUSTABLE VOUT = 5V, FULL LOAD, PWM MODE 6.20 6.23 6.26 6.29 6.32 6.35 6.38 6.41 6.44 6.47 6.50 0 30 60 90 120 150 180 210 240 270 300 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) MAXM15067 OUTPUT VOLTAGE vs. LOAD CURRENT ADJUSTABLE VOUT = 6.3V, PFM MODE toc30 VIN = 36V VIN = 24V VIN = 12V VIN = 60V VIN = 48V toc33 2µs/div VOUT(AC) 10mV/div MAXM15067 OUTPUT VOLTAGE RIPPLE VIN = 12V, ADJUSTABLE VOUT = 1.5V, FULL LOAD, PWM MODE toc36 2µs/div VOUT(AC) 10mV/div MAXM15065 OUTPUT VOLTAGE RIPPLE VIN = 24V, FIXED VOUT = 3.3V, FULL LOAD, PWM MODE Maxim Integrated │ 7 www.maximintegrated.com 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module MAXM15065/MAXM15066/ MAXM15067

(VIN = VEN/UVLO = 24V, VGND = 0V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to GND, unless otherwise noted. The circuit values for different output-voltage applications are as in Table 1, unless other- wise noted.) Typical Operating Characteristics (continued) toc37 2µs/div VOUT(AC) 10mV/div MAXM15066 OUTPUT VOLTAGE RIPPLE VIN = 24V, FIXED VOUT = 5V FULL LOAD, PWM MODE toc40 2µs/div VIN(AC) 100mV/div MAXM15067 INPUT VOLTAGE RIPPLE VIN = 24V, ADJUSTABLE VOUT = 5V, FULL LOAD, PWM MODE 50mV/div 100mA/div toc43 100µs/div VOUT(AC) IOUT MAXM15067 LOAD TRANSIENT RESPONSE VIN = 12V, ADJUSTABLE VOUT = 1.5V, PFM MODE (LOAD CURRENT STEPPED FROM 5mA to 150mA) toc38 2µs/div VIN(AC) 50mV/div MAXM15067 INPUT VOLTAGE RIPPLE VIN = 12V, ADJUSTABLE VOUT = 1.5V FULL LOAD, PWM MODE toc41 2µs/div VIN(AC) 50mV/div MAXM15065 INPUT VOLTAGE RIPPLE VIN = 24V, FIXED VOUT = 3.3V, FULL LOAD, PWM MODE 50mV/div 100mA/div toc44 100µs/div VOUT(AC) IOUT MAXM15067 LOAD TRANSIENT RESPONSE VIN = 12V, ADJUSTABLE VOUT = 1.5V, PWM MODE (LOAD CURRENT STEPPED FROM 150mA TO 300mA) toc39 2µs/div VIN(AC) 50mV/div MAXM15067 INPUT VOLTAGE RIPPLE VIN = 24V, ADJUSTABLE VOUT = 3.3V, FULL LOAD, PWM MODE toc42 2µs/div VIN(AC) 100mV/div MAXM15066 INPUT VOLTAGE RIPPLE VIN = 24V, FIXED VOUT = 5V FULL LOAD, PWM MODE 100mV/div 100mA/div toc45 100µs/div VOUT(AC) IOUT MAXM15067 LOAD TRANSIENT RESPONSE VIN = 24V, ADJUSTABLE VOUT = 3.3V, PFM MODE (LOAD CURRENT STEPPED FROM 5mA TO 150mA) Maxim Integrated │ 8 www.maximintegrated.com 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module MAXM15065/MAXM15066/ MAXM15067

(VIN = VEN/UVLO = 24V, VGND = 0V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to GND, unless otherwise noted. The circuit values for different output-voltage applications are as in Table 1, unless other- wise noted.) 100mV/div 100mA/div toc46 100µs/div VOUT(AC) IOUT MAXM15067 LOAD TRANSIENT RESPONSE VIN=24V, ADJUSTABLE VOUT = 3.3V, PWM MODE (LOAD CURRENT STEPPED FROM 150mA TO 300mA) 100mV/div 100mA/div toc49 100µs/div VOUT(AC) IOUT MAXM15065 LOAD TRANSIENT RESPONSE VIN = 24V, FIXED VOUT = 3.3V, PFM MODE (LOAD CURRENT STEPPED FROM 5mA TO 150mA) 100mV/div 100mA/div toc52 100µs/div VOUT(AC) IOUT MAXM15066 LOAD TRANSIENT RESPONSE VIN = 24V, FIXED VOUT = 5V, PWM MODE (LOAD CURRENT STEPPED FROM 150mA TO 300mA) 200mV/div 100mA/div toc47 100µs/div VOUT(AC) IOUT MAXM15067 LOAD TRANSIENT RESPONSE VIN = 24V, ADJUSTABLE VOUT = 5V, PFM MODE (LOAD CURRENT STEPPED FROM 5mA TO 150mA) 100mV/div 100mA/div toc50 100µs/div VOUT(AC) IOUT MAXM15065 LOAD TRANSIENT RESPONSE VIN = 24V, FIXED VOUT = 3.3V, PWM MODE (LOAD CURRENT STEPPED FROM 150mA TO 300mA) 5V/div toc53 1ms/div EN/UVLO VOUT 10V/div 5V/div MAXM15067 STARTUP THROUGH ENABLE VIN = 12V, ADJUSTABLE VOUT = 1.5V, FULL LOAD, PWM MODE LX 1V/div RESET 100mV/div 100mA/div toc48 100µs/div VOUT(AC) IOUT MAXM15067 LOAD TRANSIENT RESPONSE VIN = 24V, ADJUSTABLE VOUT = 5V, PWM MODE (LOAD CURRENT STEPPED FROM 150mA TO 300mA) 200mV/div 100mA/div toc51 100µs/div VOUT(AC) IOUT MAXM15066 LOAD TRANSIENT RESPONSE VIN = 24V, FIXED VOUT = 5V, PFM MODE (LOAD CURRENT STEPPED FROM 5mA TO 150mA) 1V/div toc54 100µs/div EN/UVLO VOUT 5V/div MAXM15067 SHUTDOWN THROUGH ENABLE VIN = 12V, ADJUSTABLE VOUT = 1.5V, FULL LOAD, PWM MODE 10V/div RESET 5V/div LX Typical Operating Characteristics (continued) Maxim Integrated │ 9 www.maximintegrated.com 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module MAXM15065/MAXM15066/ MAXM15067

(VIN = VEN/UVLO = 24V, VGND = 0V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to GND, unless otherwise noted. The circuit values for different output-voltage applications are as in Table 1, unless other- wise noted.) Typical Operating Characteristics (continued)Typical Operating Characteristics (continued) 5V/div toc55 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM15067 STARTUP THROUGH ENABLE VIN = 24V, ADJUSTABLE VOUT = 3.3V, FULL LOAD, PWM MODE LX 2V/div RESET 5V/div toc58 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM15067 STARTUP THROUGH ENABLE (2V PREBIAS) VIN = 24V, ADJUSTABLE VOUT = 3.3V, NO LOAD, PFM MODE LX 2V/div RESET 5V/div toc61 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM15065 STARTUP THROUGH ENABLE VIN = 24V, FIXED VOUT = 3.3V, FULL LOAD, PWM MODE LX 2V/div RESET 2V/div toc56 100µs/div EN/UVLO VOUT 5V/div MAXM15067 SHUTDOWN THROUGH ENABLE VIN = 24V, ADJUSTABLE VOUT = 3.3V, FULL LOAD, PWM MODE 20V/div RESET 5V/div LX 5V/div toc59 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM15067 STARTUP THROUGH ENABLE VIN = 24V, ADJUSTABLE VOUT = 5V, FULL LOAD, PWM MODE LX 2V/div RESET 2V/div toc62 100µs/div EN/UVLO VOUT 5V/div MAXM15065 SHUTDOWN THROUGH ENABLE VIN = 24V, FIXED VOUT = 3.3V, FULL LOAD, PWM MODE 20V/div RESET 5V/div LX 5V/div toc57 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM15067 STARTUP THROUGH ENABLE (2V PREBIAS) VIN = 24V, ADJUSTABLE VOUT = 3.3V, NO LOAD, PWM MODE LX 2V/div RESET 2V/div toc60 100µs/div EN/UVLO VOUT 5V/div MAXM15067 SHUTDOWN THROUGH ENABLE VIN = 24V, ADJUSTABLE VOUT = 5V, FULL LOAD, PWM MODE 20V/div RESET 5V/div LX 5V/div toc63 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM15065 STARTUP THROUGH ENABLE (2V PREBIAS) VIN = 24V, FIXED VOUT = 3.3V, NO LOAD, PWM MODE LX 2V/div RESET Maxim Integrated │ 10 www.maximintegrated.com 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module MAXM15065/MAXM15066/ MAXM15067

(VIN = VEN/UVLO = 24V, VGND = 0V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to GND, unless otherwise noted. The circuit values for different output-voltage applications are as in Table 1, unless other- wise noted.) Typical Operating Characteristics (continued) 5V/div toc64 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM15065 STARTUP THROUGH ENABLE (2V PREBIAS) VIN = 24V, FIXED VOUT = 3.3V, NO LOAD, PFM MODE LX 2V/div RESET 5V/div toc67 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM15066 STARTUP THROUGH ENABLE (2.5V PREBIAS) VIN = 24V, FIXED VOUT = 5V, NO LOAD, PWM MODE LX 2V/div RESET 500mV/div toc70 1ms/div VIN VCC 10V/div 10V/div MAXM15067 SHUTDOWN THROUGH VIN VIN = 12V, ADJUSTABLE VOUT = 1.5V, FULL LOAD, PWM MODE LX 2V/div VOUT 5V/div toc65 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM15066 STARTUP THROUGH ENABLE VIN = 24V, FIXED VOUT = 5V, FULL LOAD, PWM MODE LX 2V/div RESET 5V/div toc68 1ms/div EN/UVLO VOUT 20V/div 5V/div MAXM15066 STARTUP THROUGH ENABLE (2.5V PREBIAS) VIN = 24V, FIXED VOUT = 5V, NO LOAD, PFM MODE LX 2V/div RESET 2V/div toc71 1ms/div VIN VCC 20V/div 20V/div MAXM15067 STARTUP THROUGH VIN VIN = 24V, ADJUSTABLE VOUT = 3.3V, FULL LOAD, PWM MODE LX 2V/div VOUT 2V/div toc66 100µs/div EN/UVLO VOUT 5V/div MAXM15066 SHUTDOWN THROUGH ENABLE VIN = 24V, FIXED VOUT = 5V, FULL LOAD, PWM MODE 20V/div RESET 5V/div LX 500mV/div toc69 1ms/div VIN VCC 10V/div 10V/div MAXM15067 STARTUP THROUGH VIN VIN = 12V, ADJUSTABLE VOUT = 1.5V, FULL LOAD, PWM MODE LX 2V/div VOUT 2V/div toc72 1ms/div VIN VCC 20V/div 20V/div MAXM15067 SHUTDOWN THROUGH VIN VIN = 24V, ADJUSTABLE VOUT = 3.3V, FULL LOAD, PWM MODE LX 2V/div VOUT Maxim Integrated │ 11 www.maximintegrated.com 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module MAXM15065/MAXM15066/ MAXM15067

(VIN = VEN/UVLO = 24V, VGND = 0V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to GND, unless otherwise noted. The circuit values for different output-voltage applications are as in Table 1, unless other- wise noted.) Typical Operating Characteristics (continued) 2V/div toc73 1ms/div VIN VCC 20V/div 20V/div MAXM15067 STARTUP THROUGH VIN VIN = 24V, ADJUSTABLE VOUT = 5V, FULL LOAD, PWM MODE LX 2V/div VOUT 2V/div toc76 1ms/div VIN VCC 20V/div 20V/div MAXM15065 SHUTDOWN THROUGH VIN VIN = 24V, FIXED VOUT = 3.3V, FULL LOAD, PWM MODE LX 2V/div VOUT 20V/div toc79 20ms/div SHORT VOUT 2V/div MAXM15067 OUTPUT SHORT IN STEADY STATE VIN = 24V, ADJUSTABLE VOUT = 3.3V, FULL LOAD, PWM MODE 5V/div LX IOUT 200mA/div 2V/div toc74 1ms/div VIN VCC 20V/div 20V/div MAXM15067 SHUTDOWN THROUGH VIN VIN = 24V, ADJUSTABLE VOUT = 5V, FULL LOAD, PWM MODE LX 2V/div VOUT 2V/div toc77 1ms/div VIN VCC 20V/div 20V/div MAXM15066 STARTUP THROUGH VIN VIN = 24V, FIXED VOUT = 5V, FULL LOAD, PWM MODE LX 2V/div VOUT 20V/div toc80 20ms/div VOUT 20mV/div MAXM15067 OUTPUT SHORT DURING STARTUP VIN = 24V, ADJUSTABLE VOUT = 3.3V, FULL LOAD, PWM MODE 20V/div LX VIN IOUT 10mA/div 2V/div toc75 1ms/div VIN VCC 20V/div 20V/div MAXM15065 STARTUP THROUGH VIN VIN = 24V, FIXED VOUT = 3.3V, FULL LOAD, PWM MODE LX 2V/div VOUT 2V/div toc78 1ms/div VIN VCC 20V/div 20V/div MAXM15066 SHUTDOWN THROUGH VIN VIN = 24V, FIXED VOUT = 5V, FULL LOAD, PWM MODE LX 2V/div VOUT 20V/div toc81 20ms/div SHORT VOUT 2V/div MAXM15065 OUTPUT SHORT IN STEADY STATE VIN = 24V, FIXED VOUT = 3.3V, FULL LOAD, PWM MODE 5V/div LX IOUT 500mA/div Maxim Integrated │ 12 www.maximintegrated.com 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module MAXM15065/MAXM15066/ MAXM15067

(VIN = VEN/UVLO = 24V, VGND = 0V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to GND, unless otherwise noted. The circuit values for different output-voltage applications are as in Table 1, unless other- wise noted.) Typical Operating Characteristics (continued) 20V/div toc82 20ms/div VOUT 20mV/div MAXM15065 OUTPUT SHORT DURING STARTUP VIN = 24V, FIXED VOUT = 3.3V, FULL LOAD, PWM MODE 20V/div LX VIN IOUT 10mA/div 20V/div toc84 20ms/div VOUT 20mV/div MAXM15066 OUTPUT SHORT DURING STARTUP VIN = 24V, FIXED VOUT = 5V, FULL LOAD, PWM MODE 20V/div LX VIN IOUT 10mA/div -80 -60 -40 -20 100 1k 10k 100k -80 -60 -40 -20 100 PHASE MARGIN (◦) GAIN (dB) FREQUENCY (Hz) GAIN toc86 PHASE CROSSOVER FREQUENCY = 47.638kHz PHASE MARGIN = 49.468° MAXM15067 BODE PLOT VIN = 24V, ADJUSTABLE VOUT = 3.3V, FULL LOAD, PWM MODE 20V/div toc83 20ms/div SHORT VOUT 5V/div MAXM15066 OUTPUT SHORT IN STEADY-STATE VIN = 24V, FIXED VOUT = 5V, FULL LOAD, PWM MODE 5V/div LX IOUT 500mA/div -80 -60 -40 -20 100 1k 10k 100k -80 -60 -40 -20 100 PHASE MARGIN (◦) GAIN (dB) FREQUENCY (Hz) GAIN toc85 PHASE CROSSOVER FREQUENCY = 49.294kHz PHASE MARGIN = 46.023◦ MAXM15067 BODE PLOT VIN = 12V, ADJUSTABLE VOUT = 1.5V, FULL LOAD, PWM MODE -80 -60 -40 -20 100 1k 10k 100k -80 -60 -40 -20 100 PHASE MARGIN (◦) GAIN (dB) FREQUENCY (Hz) GAIN toc87 PHASE CROSSOVER FREQUENCY = 37.212kHz PHASE MARGIN = 54.136° MAXM15067 BODE PLOT VIN = 24V, ADJUSTABLE VOUT = 5V, FULL LOAD, PWM MODE Maxim Integrated │ 13 www.maximintegrated.com 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module MAXM15065/MAXM15066/ MAXM15067

(VIN = VEN/UVLO = 24V, VGND = 0V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to GND, unless otherwise noted. The circuit values for different output-voltage applications are as in Table 1, unless other- wise noted.) Typical Operating Characteristics (continued) -80 -60 -40 -20 100 1k 10k 100k -80 -60 -40 -20 100 PHASE MARGIN (◦) GAIN (dB) FREQUENCY (Hz) GAIN toc88 PHASE CROSSOVER FREQUENCY = 45.746kHz PHASE MARGIN = 54.585° MAXM15065 BODE PLOT VIN = 24V, FIXED VOUT = 3.3V, FULL LOAD, PWM MODE toc92 FREQUENCY (Hz) CONDUCTED EMISSION PLOT (WITH FILTER C = 0.1µF + 0.68µF, L = 82µH, C = 1µF) MAGNITUDE (dBµV) CONDITIONS : VIN = 24V, VOUT = 5V, IOUT = 0.3A 150k 1M 10M CISPR-22 CLASS B AVG LIMIT CISPR-22 CLASS B QP LIMIT PEAK EMISSION AVERAGE EMISSION 100 150 200 250 300 350 50 70 90 110 130 OUTPUT CURRENT (mA) AMBIENT TEMPERATURE (°C) MAXM15067 OUTPUT CURRENT vs. AMBIENT TEMPERATURE toc90 ADJUSTABLE VOUT = 2.5V -80 -60 -40 -20 100 1k 10k 100k -80 -60 -40 -20 100 PHASE MARGIN (◦) GAIN (dB) FREQUENCY (Hz) GAIN toc89 PHASE CROSSOVER FREQUENCY = 45.639kHz PHASE MARGIN = 58.503° MAXM15066 BODE PLOT VIN = 24V, FIXED VOUT = 5V, FULL LOAD, PWM MODE toc93 FREQUENCY(Hz) RADIATED EMISSION PLOT MAGNITUDE (dBµV/m) -10 CONDITIONS : VIN = 24V, VOUT = 5V, IOUT = 0.3A 30M 100M 1G TUV Rheinland Maxim IC_MAXM15067_24VIN_VOUT 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 Ampl i t ude ( dBuV/ m) 06:05:37 P M, Monday, Novem ber 26, 2018 RE 30MHz-1GHz_0-360deg_90deg step_1-4m tr Height_Quick S can_Test4.TIL Final_S canV FinaL_S canH Lim it HORIZONTAL SCAN CISPR-22 CLASS B QP LIMIT VERTICAL SCAN 100 150 200 250 300 350 50 70 90 110 130 OUTPUT CURRENT (mA) AMBIENT TEMPERATURE (°C) MAXM15065/6 OUTPUT CURRENT vs. AMBIENT TEMPERATURE toc91 FIXED VOUT = 3.3V FIXED VOUT = 5V Maxim Integrated │ 14 www.maximintegrated.com 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module MAXM15065/MAXM15066/ MAXM15067

1 LX Switching Node of the Inductor. No external connection to this pin. 2 GND Ground Pin. Connect GND to the ground plane. See the PCB Layout Guidelines section for more details. Refer to the MAXM15067 EV kit for a sample layout.

3 RESET

Open-Drain Power-Good Output. Pull up RESET to an external power supply with an external resistor. RESET goes low if FB drops below 92% of its set value. RESET goes high impedance 1.9ms after FB rises above 95.5% of its set value. See the Electrical Characteristics table for threshold values. 4 MODE PFM/PWM Mode-Selection Input. Connect MODE to GND to enable fixed-frequency PWM operation at all loads. Leave MODE unconnected for PFM operation at light load. 5 OUT Module Output Pin. Connect a capacitor from OUT to GND. See the PCB Layout Guidelines section for more details. 6 FB Output Feedback Connection. Connect FB to a resistor-divider between OUT and GND to set the output voltage for MAXM15067. Connect to output voltage node (VOUT) for MAXM15065 and MAXM15066. See Output-Voltage Setting section for more details. 7 VCC Internal LDO Power Output. Bypass VCC to GND with a minimum 1µF ceramic capacitor.

8 EN/UVLO

Active-High, Enable/Undervoltage-Detection Input. Pull EN/UVLO to GND to disable the module output. Connect EN/UVLO to VIN for always-on operation. Connect a resistor-divider between VIN, EN/UVLO, and GND to program the input voltage at which the module turns on. 9–10 VIN Power-Supply Input. Connect the VIN pins together. Decouple to GND with a capacitor; place the capacitor close to the VIN and GND pins. See Table 1 for more details. Pin Configuration MAXM15065 MAXM15066 MAXM15067 TOP VIEW ‘+’ INDICATES PIN 1 OF THE MODULE GND LX OUT RESET MODE VIN VIN FB EN/UVLO VCC Pin Description www.maximintegrated.com Maxim Integrated │ 15 MAXM15065/MAXM15066/ MAXM15067 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module

MODULE PART NUMBER S1 S2 R3 (KΩ) R4 (KΩ) MAXM15067 CLOSE OPEN OPEN OPEN MAXM15065 OPEN CLOSE 205.33 77 MAXM15066 OPEN CLOSE 350.80 77 Functional Diagram PEAK CURRENT-MODE CONTROLLER VCC RESET LOGIC LDO 1.215V MAXM15065/MAXM15066/ MAXM15067 33µH EN/UVLO VIN RESET GND LX OUT FB MODE SELECTION LOGIC HIGH-SIDE DRIVER OSCILLATOR SLOPE COMPENSATION LOW-SIDE DRIVER *REFER TO TABLE A SOFT-START MODE *S2 *S1 www.maximintegrated.com Maxim Integrated │ 16 MAXM15065/MAXM15066/ MAXM15067 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module

The MAXM15065/MAXM15066/MAXM15067 are a family of high-efficiency, synchronous step-down DC-DC modules with integrated controller, MOSFETs, compen - sation components, and inductor that operate over a wide input-voltage range. The modules deliver an output current up to 300mA. The MAXM15065 and MAXM15066 are fixed 3.3V and 5V output modules respectively. The MAXM15067 is an adjustable output (0.9V to 6.3V) module. When EN/UVLO and VCC UVLO are ascertained, an internal power-up sequence ramps up the error-amplifier reference, resulting in an output-voltage soft-start. The FB pin monitors the output voltage through a resistor- divider. The RESET pin transitions to a high-impedance state 1.9ms after the output voltage reaches 95.5% of regu- lation. The devices select either PFM or forced-PWM mode depending on the state of the MODE pin at power-up. By pulling the EN/UVLO pin to low, the devices enter shutdown mode and consumes only 2.2μA (typ) of standby current. The modules use an internally compensated, fixed-fre- quency, current-mode control scheme. On the rising edge of an internal clock, the high-side pMOSFET turns on. An internal error amplifier compares the feedback volt - age to a fixed internal refer ence voltage and generates an error voltage. The error voltage is compared to a sum of the current-sense voltage and a slope-compensation voltage by a PWM comparator to set the on-time. During the on-time of the pMOSFET, the inductor current ramps up. For the remainder of the switching period (off-time), the pMOSFET is kept off and the low-side nMOSFET turns on. During the off-time, the inductor releases the stored energy as the inductor current ramps down, pro - viding current to the output. Under over load conditions, the cycle-by-cycle current-limit feature limits the inductor peak current by turning off the high-side pMOSFET and turning on the low-side nMOSFET. Mode Selection (MODE) The logic state of the MODE pin is latched after V CC and EN/UVLO voltages exceed respective UVLO rising thresholds and all internal voltages are ready to allow LX switching. If the MODE pin is unconnected at power-up, the part operates in PFM mode at light loads. If the MODE pin is grounded at power-up, the part operates in con - stant-frequency PWM mode at all loads. State changes on the MODE pin are ignored during normal operation. PWM Operation In PWM mode, the module output 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 of operation gives lower efficiency at light loads compared to PFM- mode of operation. PFM Operation PFM mode operation disables negative output current from the module, and skips pulses at light loads for bet - ter efficiency. In PFM mode, the module output current is forced to a fixed peak of 130mA 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 module output cur- rent 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 130mA peak. The advantage of PFM mode is higher efficiency at light loads because of lower quiescent current drawn from supply. Internal 5V Regulator An internal regulator provides a 5V nominal supply to power the internal functions and to drive the power MOSFETs. The output of the linear regulator (V CC) should be bypassed with a 1μF ceramic capacitor to GND. The V CC regula- tor dropout voltage is typically 150mV. An undervoltage lockout circuit that disables the buck converter when VCC falls below 3.8V (typ). The 400mV, V CC-UVLO hysteresis prevents chattering on power-up and power-down. Enable/Undervoltage Lockout (EN/UVLO), Soft-Start When EN/UVLO voltage is above 1.215V (typ), the device’s internal error-amplifier reference voltage starts to ramp up. The duration of the soft-start ramp is 3.75ms (typ), allowing a smooth increase of the output voltage. Driving EN/UVLO low disables both power MOSFETs, as well as other internal circuitry, and reduces VIN quiescent current to below 2.2μA. EN/UVLO can be used as an input-voltage UVLO adjustment input. An external volt - age-divider between V IN and EN/UVLO to GND adjusts the input voltage at which the device turns on or turns off. If input UVLO programming is not desired, connect EN/ UVLO to V IN (see the Electrical Characteristics table for EN/UVLO rising and falling threshold voltages). www.maximintegrated.com Maxim Integrated │ 17 MAXM15065/MAXM15066/ MAXM15067 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module

RESET Output (RESET) The devices include an open-drain RESET output to monitor the output voltage. RESET goes high impedance 1.9ms after the output rises above 95.5% of its nominal set value and pulls low when the output voltage falls below 92% of the set nominal regulated voltage. RESET asserts low during the hiccup timeout period. Startup into a Prebiased Output The devices are capable of soft-start into a prebiased out- put, without discharging the output capacitor in both the PFM and forced-PWM modes. Such a feature is useful in applications where digital integrated circuits with multiple rails are powered. Overcurrent Protection (OCP)/Hiccup Mode The MAXM15065/MAXM15066/MAXM15067 are pro - vided with a robust overcurrent protection (OCP) scheme that protects the modules under overload and output short-circuit conditions. The power module measures and limits peak inductor current. When overcurrent is detected in the inductor, or if the FB node goes below 64.5% of its nominal regulation threshold, the module enters hiccup mode of operation. In hiccup mode, the module is protect- ed by suspending switching for a hiccup timeout period of 120ms (typ). Once the hiccup timeout period expires, soft-start is attempted again. Hiccup mode of operation ensures low power dissipation under output overload or short-circuit conditions. Once the hiccup timeout period expires, soft-start is attempted again. The MAXM15065/6/7 are designed to support a maximum load current of 300mA. The inductor ripple current is cal - culated as follows: IN OUT OUT OUT OUT SW IN OUT V V 4.85 I V 3.05 II L f V 1.8 I Where: VOUT = Steady-state output voltage VIN = Operating input voltage for given V OUT fSW = Switching Frequency L = Power module output inductance (33µH ±30%) IOUT = Required output (load) current The following condition should be satisfied at the desired load current, IOUT. OUT II 0.492 ∆+< Thermal Overload Protection Thermal overload protection limits the total power dis - sipation in the device. When the junction temperature exceeds +166°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. Applications Information Input-Voltage Range The minimum and maximum operating input voltages for a given output voltage should be calculated as follows: ( ) ( )OUT OUT IN(MIN) OUT MAX OUTIN(MAX) ON(MIN) SW V I 3.05V I 1.8D VV tf +×= +× = × where: VOUT = Steady-state output voltage, IOUT = Maximum load current, fSW = Worst-case switching frequency(585000 Hz), DMAX = Maximum duty cycle (0.89), tON(MIN) = Worst-case minimum controllable switch on- time (120ns). Also, for duty cycle > 0.5; VIN(MIN) > 2.67 × VOUT + 9.91 × IOUT - 9.8 For MAXM15065, VIN(MIN) = 5.5V, VIN(MAX) = 60V For MAXM15066, VIN(MIN) = 7.5V, VIN(MAX) = 60V 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’s switching. The input capacitor RMS current requirement (I RMS) is defined by the following equation: ( )OUT IN OUT RMS OUT(MAX) IN V VV II V = × 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, OUT(MAX) RMS(MAX) I I 2= www.maximintegrated.com Maxim Integrated │ 18 MAXM15065/MAXM15066/ MAXM15067 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module

∆VIN = Allowable input-voltage ripple. resistor-divider from output to FB to GND (see Figure 2). Figure 1. Adjustable EN/UVLO Network Figure 2. Setting the Output Voltage

ciency and power loss for the 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 EV kit layout for first-pass success. * The modules have a pulse skip algorithm that allows VOUT to be regulated beyond the VIN(MAX) specified in the above table, up to 60V.

Table 1. Selection of Components

Figure 3. Adjustable Output Layout Guidelines

Figure 4. Fixed Output Layout Guidelines

Typical Application Circuit for Adjustable 3.3V Output Typical Application Circuit for Adjustable 2.5V Output MAXM15067 VIN LX GND MODE OUT FB VOUT 3.3V, 300mA 1µF 10µF VIN 5.5V TO 48V EN/UVLO RESET VCC 1µF MODE = GND FOR PWM MODE = OPEN FOR PFM C1 = MURATA 1μF/X7R/100V/1206 (GRM31CR72A105KA01L) C2 = MURATA 10μF/X7R/16V/0805 (GRM21BZ71C106KE15) C3 = MURATA 1μF/X7R/6.3V/0603 (GRM188R70J105K) 200kΩ 75kΩ MAXM15067 VIN LX GND MODE OUT FB VOUT 2.5V, 300mA 1µF 10µF VIN 4.5V TO 36V EN/UVLO RESET VCC 1µF MODE = GND FOR PWM MODE = OPEN FOR PFM C1 = MURATA 1μF/X7R/50V/0805 (GRM21BR71H105KA12L) C2 = MURATA 10μF/X7R/16V/0805 (GRM21BZ71C106KE15) C3 = MURATA 1μF/X7R/6.3V/0603 (GRM188R70J105K) 133kΩ 75kΩ Typical Application Circuits www.maximintegrated.com Maxim Integrated │ 23 MAXM15065/MAXM15066/ MAXM15067 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module

Typical Application Circuit for Adjustable 1.5V Output Typical Application Circuit for Fixed 3.3V Output MAXM15067 VIN LX GND MODE OUT FB VOUT 1.5V, 300mA 1µF 10µF VIN 4.5V TO 21.5V EN/UVLO RESET VCC 1µF MODE = GND FOR PWM MODE = OPEN FOR PFM C1 = MURATA 1μ F/X7R/25V/0805 (GRM219R71E105KA88D) C2 = MURATA 10μ F/X7R/6.3V/1206 (GRM31CR70J106KA01) C3 = MURATA 1μ F/X7R/6.3V/0603 (GRM188R70J105K) 50kΩ 75kΩ MAXM15065 VIN LX GND MODE OUT FB VOUT 3.3V, 300mA 1µF 10µF VIN 5.5V TO 48V EN/UVLO RESET VCC 1µF MODE = GND FOR PWM MODE = OPEN FOR PFM C1 = MURATA 1μF/X7R/100V/1206 (GRM31CR72A105KA01L) C2 = MURATA 10μF/X7R/16V/0805 (GRM21BZ71C106KE15) C3 = MURATA 1μF/X7R/6.3V/0603 (GRM188R70J105K) Typical Application Circuits (continued) www.maximintegrated.com Maxim Integrated │ 24 MAXM15065/MAXM15066/ MAXM15067 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module

Typical Application Circuit for Fixed 5V Output + Denotes a lead(Pb)-free/RoHS-compliant package. T Denotes tape-and-reel. PART NUMBER TEMP RANGE PIN-PACKAGE MAXM15065AMB+ -40°C to +125°C 10-pin uSLIC MAXM15065AMB+T -40°C to +125°C 10-pin uSLIC MAXM15066AMB+ -40°C to +125°C 10-pin uSLIC MAXM15066AMB+T -40°C to +125°C 10-pin uSLIC MAXM15067AMB+ -40°C to +125°C 10-pin uSLIC MAXM15067AMB+T -40°C to +125°C 10-pin uSLIC MAXM15066 VIN LX GND MODE OUT FB VOUT 5V, 300mA 1µF 10µF VIN 8.5V TO 60V EN/UVLO RESET VCC 1µF MODE = GND FOR PWM MODE = OPEN FOR PFM C1 = MURATA 1μF/X7R/100V/1206 (GRM31CR72A105KA01L) C2 = MURATA 10μF/X7R/16V/0805 (GRM21BZ71C106KE15) C3 = MURATA 1μF/X7R/6.3V/0603 (GRM188R70J105K)

Ordering Information

Typical Application Circuits (continued) www.maximintegrated.com Maxim Integrated │ 25 MAXM15065/MAXM15066/ MAXM15067 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module

0 3/19 Initial release —

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. │ 26 4.5V to 60V, 300mA Himalaya uSLIC Step-Down Power Module MAXM15065/MAXM15066/ MAXM15067 For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.