EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX20075/MAX20076/ 36V, 600mA/1.2A Mini Buck Converter MAX25276 General Description Benefits and Features The MAX20075/MAX20076/MAX25276 are small, syn- Synchronous DC-DC Converter with Integrated FETs MAX20075 = 0.6A I chronous buck converters with integrated high-side OUT MAX20076/MAX25276 = 1.2A I and low-side switches. The MAX20076/MAX25276 are OUT For applications requiring low quiescent current/ designed to deliver up to 1.2A and the MAX20075 up skip mode operation, please refer to MAX20075D/ to 0.6A, with 3.5V to 36V input voltages. The devices MAX20076D/MAX25276D. This device is only provide an accurate output voltage of 2% within the recommended for FPWM operation normal operation input range of 6V to 18V. With 20ns 20ns Minimum On-Time Small Solution Size minimum on-time capability, the converter is capable of Saves Space large input-to-output conversion ratios. Voltage quality 2.1MHz Frequency can be monitored by observing the PGOOD signal. The Programmable 1V to 10V Output for the Buck, or devices can operate in dropout by running at 99% duty Fixed 5V/3.3V Options Available cycle, making them ideal for automotive and industrial Fixed 2.5ms Internal Soft-Start applications. The devices offer two fixed output voltages Fixed Output Voltage with 2% Output Accuracy of 5V and 3.3V. In addition, the devices can be configured (5V/3.3V), or Externally Resistor Adjustable (1V to for 1V to 10V output voltages using an external resistor- 10V) with 1.5% FB Accuracy divider. Frequency is internally fixed at 2.1MHz, which Innovative Current-Mode-Control Architecture allows for small external components and reduced output Minimizes Total Board Space and BOM Count ripple, and guarantees no AM interference. The devices PGOOD Output and High-Voltage EN Input Simplify offer pin-enabled spread-spectrum-frequency modulation Power Sequencing designed to minimize EMI-radiated emissions due to the Protection Features and Operating Range Ideal for modulation frequency. Automotive Applications The MAX20075/MAX20076/MAX25276 are available in 3.5V to 36V Operating V Range IN small (3mm x 3mm) 12-pin TDFN and side-wettable 40V Load-Dump Protection TDFN packages with an exposed pad, and use very few 99% Duty-Cycle Operation with Low Dropout external components. -40C to +125C Automotive Temperature Range AEC-Q100 Qualified Applications Automotive Industrial Simplified Block Diagram High-Voltage DC-DC Converters SPS SYNC REF EN BST HVLDO BANDGAP OSC SUP BIAS CLK CURRENT SENSE SOFT- Ordering Information appears at end of data sheet. + START SLOPE COMP LX LOGIC CONTROL BIAS OUT PWM EAMP FB FB PGND COMP SW1 V RESET MAX20075 MAX20076 SW2 PGOOD AGND 19-8730 Rev 11 11/19MAX20075/MAX20076/ 36V, 600mA/1.2A Mini Buck Converter MAX25276 Absolute Maximum Ratings SUP .......................................................................-0.3V to +40V OUT Short-Circuit Duration ......................................Continuous EN............................................................. -0.3V to V + 0.3V ESD Protection SUP BST to LX (Note 1) ................................................................+6V Human Body Model ........................................................2kV BST ........................................................................-0.3V to +45V Continuous Power Dissipation (T = +70C) A FB .............................................................-0.3V to V + 0.3V 12-pin TDFN/SW TDFN BIAS SYNC........................................................-0.3V to V + 0.3V (derate 24.4mW/C above +70C) ............................1951mW BIAS SPS ..........................................................-0.3V to V + 0.3V Operating Junction Temperature (Note 5) ........ -40C to +150C BIAS OUT .......................................................................-0.3V to +18V Storage Temperature Range ............................ -65C to +150C PGOOD ...................................................................-0.3V to +6V Junction Temperature ......................................................+150C PGND to 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. Note 1: LX has internal clamp diodes to PGND/AGND and SUP. Applications that forward bias these diodes should take care not to exceed the ICs package power-dissipation limits. Recommended Operating Conditions Parameter Ambient temperature range Conditions -40C to +125C Package Information PACKAGE TYPE: 12 TDFN-CU Package Code TD1233+2C Outline Number 21-0664 Land Pattern Number 90-0397 PACKAGE TYPE: 12 SW TDFN Package Code TD1233Y+2C Outline Number 21-100176 Land Pattern Number 90-100072 PACKAGE TYPE: 12 SW TDFN Package Code TD1233Y+3C Outline Number 21-100284 Land Pattern Number 90-100072 THERMAL RESISTANCE, FOUR-LAYER BOARD Junction to Ambient ( ) 41C/W JA Junction to Case ( ) 9C/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 4-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Maxim Integrated 2 www.maximintegrated.com