Evaluation Kit Design Tools Support Available Resources and Models Click here to ask an associate for production status of specific part numbers. 60V, 100mA, Ultra-Small, High-Efficiency, MAX17552/MAX17552A/ Synchronous Step-Down DC-DC Converter MAX17552B with 22A No-Load Supply Current General Description Benefits and Features The Himalaya series of voltage regulator ICs, power Eliminates External Components and Reduces Total Cost modules, and chargers enable cooler, smaller, and No SchottkySynchronous Operation for High simpler power-supply solutions. The MAX17552/ Efficiency and Reduced Cost Internal Compensation MAX17552A/MAX17552B high-efficiency, high-voltage, Himalaya synchronous step-down DC-DC converters Fixed Internal 5.1ms or Programmable Soft-Start All-Ceramic Capacitors, Ultra-Compact Layout with integrated MOSFETs operate over a 4V to 60V input voltage range. The converters can deliver output current Reduces Number of DC-DC Regulators to Stock up to 100mA at output voltages of 0.8V to 0.9 x V . The IN Wide 4V to 60V Input Voltage Range output voltage is accurate to within 1.75% over the -40C Adjustable 0.8V to 0.9 x V Output Voltages IN to +125C temperature range. Delivers Up to 100mA Load Current 100kHz to 2.2MHz Adjustable Switching Frequency The devices employ a peak-current-mode control Range with External Clock Synchronization architecture with a MODE pin that can be used to operate Configurable Between PFM and Forced-PWM the device in pulse-width modulation (PWM) or pulse- Modes frequency modulation (PFM) control schemes. PWM operation provides constant frequency operation at all Reduces Power Dissipation loads and is useful in applications sensitive to variable 22A No Load Supply Current switching frequency. PFM operation disables negative Peak Efficiency > 90% inductor current and additionally skips pulses at light PFM Feature for High Light-Load Efficiency loads for high efficiency. The converters consume only 1.2A (typ) Shutdown Current 22A of no-load supply current in PFM mode. The low- Operates Reliably in Adverse Industrial Environments resistance, on-chip MOSFETs ensure high efficiency at Peak Current-Limit Protection full load and simplify PCB layout. Built-In Output-Voltage Monitoring with Open-Drain The devices offer programmable switching frequency RESET Pin to optimize solution size and efficiency. Programmable Programmable EN/UVLO Threshold soft-start allows the user to reduce the inrush currents. Complies with CISPR32 (EN55032) Class B During overload, the MAX17552 implements a hysteretic Conducted and Radiated Emissions cycle-by-cycle peak-current-limit protection scheme, while Monotonic Startup into Prebiased Output the MAX17552A/MAX17552B implements a HICCUP-type Overtemperature Protection overload protection scheme to protect the inductor and Wide -40C to +125C Ambient Operating Temper- the internal FETs. An EN/UVLO pin allows the user to ature Range / -40C to +150C Junction Tempera- turn on/off the device at the desired input-voltage level. An ture Range open-drain RESET pin allows output-voltage monitoring. Applications The devices operate over the -40C to +125C industrial Industrial Sensors and Process Control temperature range and is available in a compact 10-pin 4mA20mA Current-Loop Powered Sensors (3mm x 2mm) TDFN/TDFN-CU and 10-pin (3mm x 3mm) High-Voltage LDO Replacement MAX packages. Simulation models are available. Battery-Powered Equipment HVAC and Building Control General-Purpose Point of Load Ordering Information appears at end of data sheet. MAX is a registered trademark of Maxim Integrated Products, Inc. 19-6903 Rev 7 7/21 2021 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. One Analog Way, Wilmington, MA 01887 U.S.A. Tel: 781.329.4700 2021 Analog Devices, Inc. All rights reserved.MAX17552/MAX17552A/ 60V, 100mA, Ultra-Small, High-Efficiency, MAX17552B Synchronous Step-Down DC-DC Converter with 22A No-Load Supply Current Absolute Maximum Ratings (Note 1) IN, EN/UVLO, V , RESET to GND...................-0.3V to +70V Junction Temperature ......................................................+150C OUT LX to GND .......................................................-0.3V to IN +0.3V Storage Temperature Range ............................ -65C to +150C RT/SYNC, SS, FB, MODE to GND .........................-0.3V to +6V Lead Temperature (soldering, 10s) .................................+300C LX Total RMS Current ........................................................1.6A Soldering Temperature (reflow) .......................................+260C Output Short-Circuit Duration ....................................Continuous 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. Note 1: Junction temperature greater than +125C degrades operating lifetimes. Package Information PACKAGE TYPE: 10 TDFN Package Code T1032N+1 Outline Number 21-0429 Land Pattern Number 90-0082 THERMAL RESISTANCE, FOUR-LAYER BOARD Continuous Power Dissipation (T = +70C) A 1188.7mW (derate 14.9mW/C above +70C) Junction to Ambient ( ) 67.3C/W JA Junction to Case ( ) 18.2C/W JC PACKAGE TYPE: 10 TDFN-CU Package Code T1032+2C Outline Number 21-100125 Land Pattern Number 90-100079 THERMAL RESISTANCE, FOUR-LAYER BOARD Continuous Power Dissipation (T = +70C) A 1253.9mW (derate 15.7mW/C above +70C) Junction to Ambient ( ) 63.8C/W JA Junction to Case ( ) 11.7C/W JC PACKAGE TYPE: 10 MAX Package Code U10+5 Outline Number 21-0061 Land Pattern Number 90-0330 THERMAL RESISTANCE, FOUR-LAYER BOARD Continuous Power Dissipation (T = +70C) A 707.3mW (derate 8.8mW/C above +70C) Junction to Ambient ( ) 113.1C/W JA Junction to Case ( ) 42C/W JC 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 thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Analog Devices 2 www.analog.com