MAXM17552AMB+T

MAXM17552_V01 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 MAXM17552 is a high-efficiency, synchronous, step-down DC-DC power module with inte - grated controller, MOSFETs, compensation components, and inductor that operates over a wide input-voltage range. The module operates from 4V to 60V input voltage and delivers up to 100mA output current over a program - mable output voltage from 0.9V to 5.5V. The module sig - nificantly reduces design complexity, manufacturing risks and offers a true “plug and play” power supply solution, reducing the time-to-market. The MAXM17552 employs peak-current-mode control architecture. To reduce input inrush current, the device offers a soft-start feature including the default soft-start time of 5.1ms. The MAXM17552 is available in a low profile, compact 10-pin 2.6mm x 3mm x 1.5mm uSLIC TM package.

Applications

• Industrial Sensors and Encoders
• 4mA–20mA Current-Loop Powered Sensors
• LDO Replacement
• HVAC and Building Control
• Battery-Powered Equipment Benefits and Features
• Easy to Use
• Wide 4V to 60V Input
• Adjustable 0.9V to 5.5V Output
• ±1.75% Feedback-Voltage Accuracy
• Up to 100mA Output Current
• Internally Compensated
• All Ceramic Capacitors
• High Efficiency
• Fixed-Frequency PWM
• Pulse Frequency Modulation (PFM) Mode to Enhance Light-Load Efficiency
• Shutdown Current as Low as 1.2μA (typ)
• Flexible Design
• Programmable Soft-Start and Prebias Startup
• Open-Drain Power Good Output (RESET Pin)
• Programmable EN/UVLO Threshold
• Rugged
• Complies with CISPR22 (EN55022) Class B Conducted and Radiated Emissions.
• Passes Drop, Shock, and Vibration Standards - JESD22–B103, B104, B111
• Robust Operation
• Hiccup Overcurrent Protection
• Overtemperature Protection
• -40°C to +125°C Ambient OperatingTemperature/ -40°C to +150°C Junction Temperature Ordering Information appears at end of data sheet. 19-100190; Rev 3; 11/20 uSLIC is a trademark of Maxim Integrated Products, Inc. MAXM17552 4V to 60V, 100mA, Compact Step-Down Power Module Typical Application Circuit IN EN/UVLO RT/SYNC OUT GND FB 261kΩ 49.9kΩ VIN 24V VOUT 5V, 100mA MAXM17552 CIN 2.2µF COUT 10µF RESET SS LX MODER3 93.1kΩ Click here for production status of specific part numbers. EVALUATION KIT AVAILABLE

PACKAGE TYPE: 10-PIN uSLIC Package Code M102A3+1 Outline Number 21-100094 Land Pattern Number 90-100027 THERMAL RESISTANCE FOUR-LAYER BOARD (Note 2) Junction to Ambient (θJA) 30.6°C/W MAXM17552 4V to 60V, 100mA, Compact Step-Down Power Module www.maximintegrated.com Maxim Integrated │ 2 Note 1: Junction temperature greater than +125°C degrades operating lifetimes Note 2: Package thermal resistance measured on Evaluation Board, Natural convection. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. 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.

Package Information

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.

(VIN = 24V, V GND = 0V, V FB = 0.85V, V EN/UVLO = 1.5V, RT/SYNC = 69.8kΩ, LX = SS = RESET = unconnected; MODE = GND 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) (Note 3) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS INPUT SUPPLY (IN) Input Voltage Range VIN 4 60 V Input Shutdown Current IIN-SH VEN/UVLO = 0V, TA = +25°C 0.67 1.2 2.25 µA Input Supply Current IQ-PWM VFB = Normal switching, VMODE = 0V, VOUT = 3.3V 800 1100 1950 IQ-PFM VMODE = unconnected 30 62 110 MODULE OUTPUT PIN (OUT) Output Line Regulation Accuracy VIN = 4V to 60V, VOUT = 3.3V, ILOAD = 0 0.1 mV/V Output Load Regulation Accuracy Tested with IOUT = 0A and 100mA VOUT = 3.3V 0.3 mV/mA ENABLE/UVLO (EN/UVLO) EN/UVLO Threshold VENR VEN/UVLO rising 1.2 1.25 1.3 VVENF VEN/UVLO falling 1.1 1.15 1.2 VEN-TRUESD VEN/UVLO falling, true shutdown 0.72 EN/UVLO Leakage Current IEN VEN/UVLO = 1.3V, TA = +25°C -100 +100 nA LX LX Leakage Current ILX-LKG VEN = 0V, TA = +25°C, VLX = (VGND + 1V) to (VIN - 1V) VOUT = float -1 +1 µA SOFT-START (SS) Soft-Start Time tSS No SS cap 4.4 5.1 5.8 ms SS Charging Current ISS VSS = 0.4V 4.7 5 5.3 µA FEEDBACK (FB) FB Regulation Voltage VFB-REG MODE = OPEN 0.786 0.812 0.830 V MODE = GND 0.786 0.8 0.814 FB Input Leakage Current IFB VFB = 0.81V, TA = 25°C -100 +120 nA CURRENT LIMIT VOUT Current-Limit ISOURCE-LIMIT 100 178 mA VOUT Current-Limit ISINK-LIMIT MODE = OPEN -1 mA MODE = GND -74 -50 OSCILLATOR (RT/SYNC) Switching Frequency fSW RRT = 422kΩ 85 100 120 kHz RRT = 191kΩ 200 220 250 RRT = 130kΩ 295 322 350 RRT = 69.8kΩ 540 600 640 RRT = 45.3kΩ 813 900 973 MAXM17552 4V to 60V, 100mA, Compact Step-Down Power Module www.maximintegrated.com Maxim Integrated │ 3

Electrical Characteristics

Note 3: All limits are 100% tested at +25°C. Limits over temperature are guaranteed by design. (VIN = 24V, V GND = 0V, V FB = 0.85V, V EN/UVLO = 1.5V, RT/SYNC = 69.8kΩ, LX = SS = RESET = unconnected; MODE = GND 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) (Note 3) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Switching Frequency Adjustable Range See the Switching Frequency (RT/SYNC) section for details 100 900 kHz SYNC Input Frequency 1.1 x fSW 900 kHz SYNC Pulse Minimum Off-Time 40 ns SYNC Rising Threshold VSYNC-H 1 1.22 1.48 V Hysteresis VSYNC-HYS 0.115 0.18 0.265 Number of SYNC Pulses to Enable Synchronization 1 Cycle MODE MODE PFM Threshold VMODE-PFM 1 1.22 1.55 V MODE Hysteresis VMODE-HYS 0.19 V TIMING Minimum On-Time tON-MIN 46 90 152 ns Maximum Duty Cycle DMAX VFB = 0.98 x VFB-REG fSW ≤ 600kHz 90 94 98 600kHz < fSW < 900kHz, VFB = 0.98 x VFB-REG 87 92 Hiccup Timeout 51 ms RESET FB Threshold for RESET Rising VFB-OKR VFB rising 93 95 97 % FB Threshold for RESET Falling VFB-OKF VFB falling 90 92 94 % RESET Delay after FB Reaches 95% Regulation 2.08 ms RESET Output Level Low IRESET = 1mA 0.23 V RESET Output Leakage Current VFB = 1.01 x VFB-REG, TA = +25°C 1 µA THERMAL SHUTDOWN Thermal-Shutdown Threshold Temperature rising 160 °C Thermal-Shutdown Hysteresis 20 °C MAXM17552 4V to 60V, 100mA, Compact Step-Down Power Module www.maximintegrated.com Maxim Integrated │ 4 Electrical Characteristics (continued)

(VIN = 24V, VEN/UVLO = 1.5V, RT/SYNC = 69.8kΩ, MODE = GND, TA = +25°C unless otherwise noted) 3.1 3.2 3.3 3.4 3.5 3.6 0 20 40 60 80 100 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) OUTPUT VOLTAGE vs. LOAD CURRENT (3.3V OUTPUT, PFM MODE) toc07 VIN = 12V VIN = 24V VIN = 36V VIN = 48VVIN = 60V 4.70 4.75 4.80 4.85 4.90 4.95 5.00 5.05 0 10 20 30 40 50 60 70 80 90 100 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) LOAD AND LINE REGULATION (5V OUTPUT, PWM MODE) VIN = 24V VIN = 60VVIN = 14V VIN = 42V toc04 100 0 20 40 60 80 100 EFFICIENCY (%) LOAD CURRENT (mA) EFFICIENCY vs. LOAD CURRENT (3.3V OUTPUT, PWM MODE, fSW = 600kHz) VIN = 24V VIN = 12V VIN = 60V toc01 VIN = 42V 100 1 10 100 EFFICIENCY (%) LOAD CURRENT (mA) EFFICIENCY vs. LOAD CURRENT (3.3V OUTPUT, PFM MODE, fSW = 322kHz) VIN = 12V toc05 VIN = 24V VIN = 36V VIN = 48V VIN = 60V 100 0 20 40 60 80 100 EFFICIENCY (%) LOAD CURRENT (mA) EFFICIENCY vs. LOAD CURRENT (5V OUTPUT, PWM MODE, fSW = 450kHz) VIN = 60V VIN = 24V VIN = 42V VIN = 14V toc02 100 1 10 100 EFFICIENCY (%) LOAD CURRENT (mA) EFFICIENCY vs. LOAD CURRENT (5V OUTPUT, PFM MODE, fSW = 450kHz) toc06 VIN = 36V VIN = 24VVIN = 60V VIN = 48V 3.300 3.305 3.310 3.315 3.320 3.325 3.330 3.335 3.340 3.345 3.350 0 10 20 30 40 50 60 70 80 90 100 OUTPUT VOLTAGE (V) LOAD CURRENT (MA) LOAD AND LINE REGULATION (3.3V OUTPUT, PWM MODE) VIN = 12V VIN = 7V VIN = 60V toc03 VIN = 24V VIN = 42V 4.7 4.8 4.9 5.0 5.1 5.2 0 20 40 60 80 100 OUTPUT VOLTAGE (V) LOAD CURRENT (mA) OUTPUT VOLTAGE vs. LOAD CURRENT (5V OUTPUT, PFM MODE) toc08 VIN = 48V VIN = 24V VIN = 36V VIN = 60V 50mA/div 1ms/div VEN/UVLO 5V/div SOFT-START FROM EN/UVLO (3.3V OUTPUT, 100mA LOAD CURRENT, PWM MODE) VOUT IOUT 1V/div 5V/div VRESET toc09 Maxim Integrated │ 5 www.maximintegrated.com MAXM17552 4V to 60V, 100mA, Compact Step-Down Power Module Typical Operating Characteristics

(VIN = 24V, VEN/UVLO = 1.5V, RT/SYNC = 69.8kΩ, MODE = GND, TA = +25°C unless otherwise noted) 10µs/div 50mV/div STEADY-STATE SWITCHING WAVEFORMS, (5V OUTPUT, 0.01A LOAD CURRENT, PFM MODE) VOUT (AC) 10V/div toc16 VLX 1ms/div VEN/UVLO 5V/div SOFT-START WITH 3V PREBIAS (100mA LOAD CURRENT, 5V OUTPUT, PWM MODE) VOUT 2V/div 5V/div IOUT 100mA/div VRESET toc13 2μs/div VLX 10mV/div STEADY-STATE SWITCHING WAVEFORMS (5V OUTPUT, NO LOAD CURRENT, PWM MODE) VOUT (AC) 10V/div toc14 2μs/div VLX 10mV/div STEADY-STATE SWITCHING WAVEFORMS (5V OUTPUT, 0.1A LOAD CURRENT, PWM MODE) VOUT (AC) 10V/div toc15 50mA/div 1ms/div VEN/UVLO 5V/div SOFT-START FROM EN/UVLO (5V OUTPUT, 100mA LOAD CURRENT, PWM MODE) VOUT IOUT 2V/div 5V/div VRESET toc10 50mA/div 1ms/div VEN/UVLO 5V/div VOUT IOUT 2V/div 5V/div SHUTDOWN FROM EN/UVLO (5V OUTPUT, 100mA LOAD CURRENT, PWM MODE) VRESET toc11 1ms/div VEN/UVLO 5V/div SOFT-START WITH 3V PREBIAS (5V OUTPUT, NO LOAD) VOUT 1V/div 5V/div VRESET toc12 Maxim Integrated │ 6 www.maximintegrated.com MAXM17552 4V to 60V, 100mA, Compact Step-Down Power Module Typical Operating Characteristics (continued)

(VIN = 24V, VEN/UVLO = 1.5V, RT/SYNC = 69.8kΩ, MODE = GND, TA = +25°C unless otherwise noted) 160 170 180 190 200 210 220 0 10 20 30 40 50 60 70 AVERAGE CURRENT LIMIT (mA) INPUT VOLTAGE (V) AVERAGE CURRENT LIMIT TEMP = -40°CTEMP = 25°C TEMP = 85°C toc17 560 570 580 590 600 610 620 630 0 10 20 30 40 50 60 70 SWITCHING FREQUENCY (kHz) INPUT VOLTAGE (V) SWITCHING FREQUENCY vs. INPUT VOLTAGE -40°C +25°C toc18 +85°C 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 10 20 30 40 50 60 70 SHUTDOWN CURRENT (µA) INPUT VOLTAGE (V) SHUTDOWN CURRENT vs. INPUT VOLTAGE 25°C toc19 TEMP = 25°C LOAD CURRENT TRANSIENT RESPONSE (VIN = 24V, VOUT = 5V, IOUT = 0.05A TO 0.1A) 50mA/div toc20 100µs/div VOUT IOUT 50mV/div (AC COUPLED) LOAD CURRENT TRANSIENT RESPONSE (VIN = 24V, VOUT = 5V, IOUT = 0A TO 0.05A) 50mA/div 100µs/div VOUT IOUT 50mV/div (AC COUPLED) toc22 LOAD CURRENT TRANSIENT RESPONSE (VIN = 24V, VOUT = 3.3V, IOUT = 0.05A TO 0.1A) 50mA/div toc21 200µs/div VOUT IOUT 50mV/div (AC COUPLED) LOAD CURRENT TRANSIENT RESPONSE (VIN = 24V, VOUT = 3.3V, IOUT = 0A TO 0.05A) 50mA/div 200µs/div VOUT IOUT 50mV/div (AC COUPLED) toc23 Maxim Integrated │ 7 www.maximintegrated.com MAXM17552 4V to 60V, 100mA, Compact Step-Down Power Module Typical Operating Characteristics (continued)

(VIN = 24V, VEN/UVLO = 1.5V, RT/SYNC = 69.8kΩ, MODE = GND, TA = +25°C unless otherwise noted) OVERLOAD PROTECTION OUT SHORT TO GROUND 20V/div toc28 40µs/div VOUT LX 1V/div -40 -30 -20 -10 PHASE (°) GAIN (dB) fCR = 22.3kHz, PHASE MARGIN = 65.2° toc29 PHASE GAIN BODE PLOT (VIN = 24V, VOUT = 5V, IOUT = 0.1A) 104103 105 FREQUENCY (Hz) -20 -10 -40 -30 -20 -10 PHASE (°) GAIN (dB) fCR = 26.4kHz, PHASE MARGIN = 59.8° toc30 PHASE GAIN BODE PLOT (VIN = 24V, VOUT = 3.3V, IOUT = 0.1A) FREQUENCY (Hz) 103 104 105 LOAD CURRENT TRANSIENT RESPONSE (PFM MODE VIN = 24V, VOUT = 5V, IOUT = 25mA TO 75mA) 50mA/div toc25 200µs/div 100mV/div (AC COUPLED) VOUT IOUT EXTERNAL SYNCHRONIZATION WITH 900kHz CLOCK FREQUENCY (VIN = 24V, VOUT = 5V, IOUT = 0.1A) 2V/div toc26 2µs/div VLX VSYNC 10V/div OVERLOAD PROTECTION STEADY STATE 100mA/div toc27 20ms/div IOUT LOAD CURRENT TRANSIENT RESPONSE (PFM MODE VIN = 24V, VOUT = 3.3V, IOUT = 20mA TO 75mA) 50mA/div toc24 200µs/div 100mV/div (AC COUPLED) IOUT VOUT Maxim Integrated │ 8 www.maximintegrated.com MAXM17552 4V to 60V, 100mA, Compact Step-Down Power Module Typical Operating Characteristics (continued)

PIN NAME PIN # FUNCTION LX 1 Switching Node. LX is high impedance when the device is in shutdown. Do not connect any external components to this pin. GND 2 Ground. Connect GND to the power ground plane. Connect all the circuit ground connections together at a single point. See the PCB Layout Guidelines section. MODE 3 PFM/PWM Mode Selection Input. Connect MODE to GND to enable the fixed-frequency PWM. Leave MODE unconnected for light-load PFM operation. RESET 4 Open-Drain Reset Output. Pull up RESET to an external power supply less than or equal to 16V with an external resistor. RESET pulls low if FB drops below 92% of its set value. RESET goes high 2ms after FB rises above 95% of its set value. OUT 5 Module output pin. Connect a capacitor from OUT to GND. See PCB Layout Guidelines section for more connection details. FB 6 Output Feedback Connection. Connect FB to a resistor-divider between OUT and GND to set the output voltage. SS 7 Soft-Start Capacitor Input. Connect a capacitor from SS to GND to set the soft-start time. Leave SS unconnected for default 5.1ms internal soft-start. RT/SYNC 8 Oscillator Timing Resistor Input. Connect a resistor from RT/SYNC to GND to program the switching frequency from 100kHz to 900kHz. See the Switching Frequency (RT/SYNC) section for details. An external pulse can be applied to RT/SYNC through a coupling capacitor to synchronize the internal clock to the external pulse frequency. EN/UVLO 9 Active-High, Enable/Undervoltage-Detection Input. Pull EN/UVLO to GND to disable the module output. Connect EN/UVLO to IN for always-on operation. Connect a resistor-divider between IN, EN/ UVLO, and GND to program the input voltage at which the module is enabled and turns on. IN 10 Power Module Input. Connect a ceramic capacitor from IN to GND for bypassing. Place the capacitor close to the IN and PGND pins. See Table 1 for more details. OUT MODE GND LX 1 5 FB RT/SYNC EN/UVLO SS IN MAXM17552 TOP VIEW ‘+’ INDICATES PIN 1 OF THE MODULE RESET MAXM17552 4V to 60V, 100mA, Compact Step-Down Power Module www.maximintegrated.com Maxim Integrated │ 9 Pin Configuration Pin Description

The MAXM17552 high-voltage, synchronous step-down power module with integrated MOSFETs and inductor, operates over a 4V to 60V input voltage range. The mod - ule can deliver output current up to 100mA at output volt - ages of 0.9V to 5.5V. The feedback voltage is accurate to within ±1.75% over -40°C to +125°C. The device uses an internally-compensated, peak cur - rent mode control architecture. On the rising edge of the internal clock, the high-side pMOSFET turns on. An internal error amplifier compares the feedback voltage to a fixed internal reference 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, providing cur- rent to the output. Under overload conditions, the cycle- by-cycle current- limit feature limits inductor peak current by turning off the high-side pMOSFET and turning on the low-side nMOSFET. Mode Selection (MODE) The device features a MODE pin for selecting either forced-PWM or PFM mode of operation. If the MODE pin is left unconnected, the device operates in PFM mode at light loads. If the MODE pin is grounded, the device operates in a constant-frequency forced-PWM mode at all loads. The mode of operation cannot be changed on-the fly during normal operation of the device. PEAK CURRENT-MODE CONTROLLER MAXM17552 PGOOD LOGIC EN/UVLO RT/SYNC FB SS GND RESET LX IN OUT 0.76V OSCILLATOR LDO 1.25V HIGH-SIDE DRIVER LOW-SIDE DRIVER 100µH MODE 1.22V VCC_INT VCC_INT MAXM17552 4V to 60V, 100mA, Compact Step-Down Power Module www.maximintegrated.com Maxim Integrated │ 10 Functional Diagram

set value independent of the load current. to reduce voltage ringing on the line. adaptive-loop compensation scheme. device’s internal oscillator to an external system clock. external clock should be in the range of 10% to 70%. frequency 10% lower than the external clock frequency. Figure 1. Synchronization to an External Clock

Reset Output (RESET) The device includes an open-drain RESET output to monitor output voltage. RESET should be pulled up with an external resistor to the desired external power supply less than or equal to 16V. RESET goes high impedance 2ms after the output rises above 95% of its nominal set value and pulls low when the output voltage falls below 92% of the set nominal output voltage. RESET asserts low during the hiccup timeout period. Startup Into a Pre-biased Output The device supports monotonic startup into a pre-biased output. When the module starts into a pre-biased output, both the high-side and low-side switches are turned off so that the module does not sink current from the output. High-side and low-side switches do not start switching until the PWM comparator commands the first PWM pulse, at which point switching commences. The output voltage is then smoothly ramped up to the target value in alignment with the internal reference. Such a feature is useful in applications where digital integrated circuits with multiple rails are powered. Operating Input-Voltage Range The maximum operating input voltage is determined by the minimum controllable on-time, while the minimum operating input voltage is determined by the maximum duty cycle and circuit voltage drops. The minimum and maximum operating input voltages for a given output volt- age should be calculated as follows: OUT OUTIN(MIN) OUT MAX SWIN(MIN) OUT OUTIN(MAX) ON(MIN) SW V (I 8.6)V (I 2.5)D ffor duty cycle, D 0.3 : V 4.8 V 42000 VV tf +×= +× = × where, VOUT = Steady-state output voltage IOUT = Maximum load current fSW = Switching frequency (max) DMAX = Maximum duty cycle tON(MIN) = Worst case minimum controllable switch on- time (152ns). Overcurrent Protection (OCP), Hiccup Mode The device implements a HICCUP-type overload protec - tion scheme to protect the inductor and internal FETs under output short-circuit conditions. When the overcur - rent event occurs, the part enters hiccup mode. In this mode, the part is initially operated with hysteretic cycle- by-cycle peak-current limit that continues for a time period equal to twice the soft-start time. The part is then turned off for a fixed 51ms hiccup timeout period. This sequence of hysteretic inductor current waveforms, followed by a hiccup timeout period, continues until the short/overload on the output is removed. Since the inductor current is bound between two limits, inductor current runway never happens. Thermal Shutdown Thermal shutdown limits the total power dissipation in the module. When the junction temperature exceeds +160°C, an on-chip thermal sensor shuts down the device, turns off the internal power MOSFETs, allowing the device to cool down. The device turns on after the junction tem - perature cools by approximately 20°C.

Application Information

Small ceramic input capacitors are recommended. The input capacitor reduces peak current drawn from the power source and reduces noise and voltage ripple on the input caused by the switching circuitry. It is recommended to select the input capacitor of the module to keep the input- voltage ripple under 2% of the minimum input voltage, and to meet the maximum ripple-current requirements. Output Capacitor Selection Small ceramic X7R-grade output capacitors are recom - mended for the device. The output capacitor has two functions. It stores sufficient energy to support the output voltage under load transient conditions and stabilizes the device’s internal control loop. Usually the output capacitor is sized to support a step load of 50% of the maximum output current in the application, such that the output voltage deviation is less than 3%. Calculate the minimum required output capacitance from the following equations: It should be noted that dielectric materials used in ceramic capacitors exhibit capacitance loss due to DC bias lev - els and should be appropriately de-rated to ensure the required output capacitance is obtained in the application. FREQUENCY RANGE (kHZ) MINIMUM OUTPUT CAPACITANCE ( µF) 100 to 130 OUT V 160 to 230 OUT V 280 to 900 OUT V MAXM17552 4V to 60V, 100mA, Compact Step-Down Power Module www.maximintegrated.com Maxim Integrated │ 12

inductive load switching and surges on the supply lines. Figure 4. Circuit for Transient Protection Table 1. Component Selection Table

• Place the input ceramic capacitor as close as possible to IN and GND pins
• Ensure that all feedback connections are short and direct
• Route high-speed switching node (LX) away from the signal pins For a sample PCB layout that ensures the first-pass success, refer to the MAXM17552 evaluation kit data sheet.

Figure 5. Layout Guidelines

+Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. PART TEMP RANGE PIN-PACKAGE MAXM17552AMB+ -40°C to +125°C 10-pin uSLIC MAXM17552AMB+T -40°C to +125°C 10-pin uSLIC MAXM17552 4V to 60V, 100mA, Compact Step-Down Power Module www.maximintegrated.com Maxim Integrated │ 16 Chip Information PROCESS: BiCMOS

Ordering Information

0 10/17 Initial release — 1 9/18 Updated General Description, Applications, Benefits and Features, and Absolute Maximum Ratings sections; updated Package Information, Electrical Characteristics, Pin Description, and Ordering Information tables; replaced Typical Application Circuit, Pin Configuration, Functional Diagram, and Figure 5; added TOC05-TOC08, TOC16, and TOC21-TOC22 and renumbered remaining TOCs. 1‒10, 14‒15 2 12/19 Updated the Absolute Maximum Ratings, Pin Description, and Reset Output (RESET) sections. 2, 9, 12 3 11/20 Updated Table 1 and the PCB Layout Guidelines section 14‒15 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. © 2020 Maxim Integrated Products, Inc. │ 17 MAXM17552 4V to 60V, 100mA, Compact Step-Down Power Module

Revision History

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