Click here to ask about the production status of specific part numbers. MAX40203 Ultra-Tiny nanoPower, 1A Ideal Diodes with Ultra-Low-Voltage Drop General Description Benefits and Features The MAX40203 is an ideal diode current-switch with for- Lower Voltage Drop in Portable Applications ward voltage drop that is approximately an order of mag- 14mV Forward Drop at 1mA (WLP) nitude smaller than that of Schottky diodes. When forward 16mV Forward Drop at 100mA (WLP) biased and enabled, the MAX40203 conducts with 90mV 43mV Forward Drop at 500mA (WLP) of voltage drop while carrying currents as high as 1A. Dur- 90mV Forward Drop at 1A (WLP) ing a short-circuit or a fast power-up, the device limits its Longer Battery Life output current to 2A. The MAX40203 thermally protects it- Low Leakage When Reverse-Biased from V DD self and any downstream circuitry from overcurrent condi- 10nA (typ) tions. Low Supply Quiescent Current This ideal diode operates from a supply voltage of 1.2V 300nA (typ), 500nA (max) to 5.5V. The supply current is relatively constant with load Smaller Footprint Than Larger Schottky Diodes current, and is typically 300nA. When disabled (EN = low), Tiny, 0.77mm x 0.77mm, 4-Bump WLP the ideal diode blocks voltages up to 6V in either direc- 5-Pin SOT23 Package tion, makes it suitable for use in most low-voltage, portable electronic devices. Wide Supply Voltage Range: 1.2V to 5.5V Thermally Self-Protecting The MAX40203 is available in a tiny, 0.77mm x 0.77mm, -40C to +125C Operating Temperature Range 4-bump WLP with a 0.35mm bump pitch and a 5-pin SOT23 package. It is specified over the -40C to +125C Ordering Information appears at end of data sheet. automotive temperature range. Applications Notebook and Tablet Computers Battery Backup Systems Powerline Fault Recorders Cellular Phones Electronic Toys USB-Powered Peripherals Portable Medical Devices Simplified Block Diagram VDD OUT EN GND 19-100354 Rev 3 3/21MAX40203 Ultra-Tiny nanoPower, 1A Ideal Diodes with Ultra- Low-Voltage Drop Absolute Maximum Ratings Any Pin to GND ........................................................ -0.3V to +6V Continuous Power Dissipation (T = +70C) A Continuous Current into EN ................................................ 10mA (SOT, derate 3.90mW/C above +70C)..................312.60mW Continuous Current Flowing Operating Temperature Range...........................-40C to +125C Between V and OUT (WLP) .......................................... 1.5A Junction Temperature.......................................................+150C DD Continuous Current Flowing Storage Temperature Range ..............................-60C to +165C Between V and OUT (SOT).............................................. 1A Lead Temperature (soldering, 10s)................................... +300C DD Continuous Power Dissipation (T = +70C) Soldering Temperature (reflow) ........................................ +260C A (WLP, derate 9.58mW/C above +70C) ...................... 766mW 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 4 WLP Package Code N40F0+1 Outline Number 21-100273 Land Pattern Number Refer to Application Note 1891 THERMAL RESISTANCE, FOUR-LAYER BOARD Junction to Ambient ( ) 104.41C/W JA Junction to Case ( ) N/A JC www.maximintegrated.com Maxim Integrated 2