EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX20075D/MAX20076D/ 36V, 600mA/1.2A Mini Buck Converter MAX20076E/MAX25276D with 3.5A I Q General Description Benefits and Features The MAX20075D/MAX20076D/MAX25276D are small, Synchronous DC-DC Converter with Integrated FETs synchronous buck converters with integrated high-side MAX20075D = 0.6A I OUT and low-side switches. The MAX20076D/MAX25276D are MAX20076D/MAX25276D = 1.2A I OUT designed to deliver up to 1.2A and the MAX20075D up to 3.5A Quiescent Current when in Standby Mode 0.6A, with 3.5V to 36V input voltages, while using only 3.5A 20ns Minimum On-Time Small Solution Size quiescent current at no load. The devices provide an Saves Space accurate output voltage of 2% within the normal 2.1MHz Frequency operation input range of 6V to 18V. With 20ns minimum Programmable 1V to 10V Output for the Buck, or on-time capability, the converter is capable of large Fixed 5V/3.3V Options Available input-to-output conversion ratios. Voltage quality can Fixed 2.5ms Internal Soft-Start be monitored by observing the PGOOD signal. The Fixed Output Voltage with 2% Output Accuracy devices can operate in dropout by running at 99% duty cycle, (5V/3.3V), or Externally Resistor Adjustable (1V to making them ideal for automotive and industrial applica- 10V) with 1.5% FB Accuracy tions. The devices offer two fixed output voltages of 5V Innovative Current-Mode-Control Architecture and 3.3V. In addition, the devices can be configured for Minimizes Total Board Space and BOM Count 1V to 10V output voltages using an external resistor- PGOOD Output and High-Voltage EN Input Simplify divider. Frequency is internally fixed at 2.1MHz, which Power Sequencing allows for small external components and reduced output ripple, and guarantees no AM interference. The devices Protection Features and Operating Range Ideal for Automotive Applications automatically enter skip mode at light loads with ultra- low quiescent current of 3.5A at no load. The devices 3.5V to 36V Operating V Range IN 40V Load-Dump Protection offer pin-enabled spread-spectrum-frequency modulation designed to minimize EMI-radiated emissions due to the 99% Duty-Cycle Operation with Low Dropout -40C to +125C Automotive Temperature Range modulation frequency. AEC-Q100 Qualified The MAX20075D/MAX20076D/MAX25276D are available in small (3mm x 3mm) 12-pin TDFN and side-wettable Simplified Block Diagram TDFN packages with an exposed pad, and use very few external components. SPS SYNC MAX20075D MAX20076D Applications MAX25276D MAX20076E REF Automotive EN HVLDO BANDGAP OSC BST Industrial BIAS High-Voltage DC-DC Converters SUP CLK CURRENT-SENSE SOFTS TART + SLOPE COMP LOGIC Ordering Information appears at end of data sheet. LX OUT CONTROL BIAS PWM EAMP FB FB SW1 COMP V/RESET SW2 GND PGOOD 19-100603 Rev 7 2/20MAX20075D/MAX20076D/ 36V, 600mA/1.2A Mini Buck Converter MAX20076E/MAX25276D with 3.5A I Q 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