EVALUATION KIT AVAILABLE Click here to ask an associate for production status of specific part numbers. MAX16956 36V, 300mA, Mini Buck Converter with 1.1A IQ General Description Benefits and Features The MAX16956 is a small, synchronous buck converter Integration and High-Switching Frequency Saves with integrated high-side and low-side switches. The de- Space vice is designed to deliver up to 300mA with input voltages DC-DC Converter Up to 300mA Capability from 3.5V to 36V, while using only 1.1A quiescent current Fixed 5V/3.3V or Programmable Output-Voltage at no load (fixed-output versions). Voltage quality can be Options (1V to 15V) monitored by observing the RESET signal. The device can Current-Mode-Control Architecture operate near dropout by running at 97% duty cycle, mak- 2.1MHz Operating Frequency ing it ideal for automotive applications under cold-crank. Fixed 5.4ms Internal Soft-Start The device offers fixed-output voltages of 5V and 3.3V, as Spread-Spectrum Frequency Modulation Reduces well as an adjustable version. The adjustable version al- EMI Emissions lows the user to program the output voltage between 1V Low I Enables Designers to Meet Stringent OEM Q and 15V by using a resistor-divider. Frequency is fixed at Module Power-Consumption Requirements 2.1MHz, which allows for small external components, re- 1.1A Quiescent Current in Standby Mode (Fixed- duced output ripple, and minimized AM radio interference. Output-Voltage Versions Only) The device offers both forced-PWM and skip modes of op- Wide Input Voltage Range Supports Automotive eration, with ultra-low quiescent current of 1.1A in skip Applications mode. The device can be ordered with spread- spectrum Operating VIN Range: 3.5V to 36V (42V Tolerant) frequency modulation designed to minimize EMI-radiated 97% (Max) Duty-Cycle Operation with Low Dropout emissions due to the switching frequency. Robust Performance Supports Wide Range of The MAX16956 is available in a small (3mm x 3mm) Automotive Applications 10-pin MAX package and operates across the full auto- Short-Circuit, Thermal Protections motive temperature range of -40C to +125C. The device -40C to +125C Automotive Temperature Range is AEC-Q100 qualified. AEC-Q100 Qualified Applications Simplified Block Diagram Automotive Body ECUs Point-of-Load Applications V BAT Distributed DC Power Systems SUP C BST IN 0.1F MAX16956 L1 V OUT LX C OUT MODE OUT/FB EN BIAS 1F RESET AGND PGND MAX is a registered trademark of Maxim Integrated Products, Inc. Ordering Information appears at end of data sheet. 19-6737 Rev 6 2/21 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.MAX16956 36V, 300mA, Mini Buck Converter with 1.1A IQ Absolute Maximum Ratings (Voltages Referenced to PGND) .................................................. OUT/FB Short-Circuit Duration ...................................Continuous SUP ........................................................................ -0.3V to +42V Continuous Power Dissipation (T = +70C) A EN ............................................................... -0.3V to V + 0.3V (derate 12.9mW/C above +70C) ...............................1031mW SUP BST to LX ............................................................................... +6V Operating Temperature Range ...........................-40C to +125C BST ......................................................................... -0.3V to +47V Junction Temperature .......................................................+150C MODE, OUT/FB, RESET ............................-0.3V to V + 0.3V Storage Temperature Range ..............................-65C to +150C BIAS AGND .................................................................... -0.3V to +0.3V Lead Temperature (soldering, 10s) .....................................300C BIAS ...................................................................... -0.3V to +6.0V Soldering Temperature (reflow) ........................................+260C 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 10 MAX Package Code U10E+3 Outline Number 21-0109 Land Pattern Number 90-0148 THERMAL RESISTANCE, SINGLE-LAYER BOARD Junction to Ambient ( ) 77.6C/W JA Junction to Case ( ) 5C/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. Note 1: 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. Electrical Characteristics (V = V = 14V, V = 0V, T = T = -40C to +125C, unless otherwise noted. Typical values are at T = +25C, unless SUP EN MODE A J A otherwise noted.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 3.5 36 Supply Voltage V V SUP T < 500ms (Note 3) 42 V = 0V 0.75 3.0 EN No load, fixed 3.3V V 1.1 3.0 OUT A No load, fixed 5V V 1.8 5.0 OUT Supply Current I SUP No load, adjustable V 32 70 OUT V = V , no load, FPWM, no MODE BIAS 0.5 1 1.5 mA switching V rising 3.0 3.2 3.4 BIAS UV Lockout V Hysteresis 0.4 www.analog.com Analog Devices 2