MP28119EG-LF-P Monolithic Power Systems

MP28119 Ultra-small 1.7MHz, 600mA, Low-Voltage Synchronous Step-Down Converter The Future of Analog IC Technology DESCRIPTION FEATURES The MP28119 is a 1.7MHz constant frequency, High Efficiency: Up to 89% current mode, ultra-small PWM step-down 1.7MHz Constant Switching Frequency converter. The device integrates a main switch 600mA Available Load Current and a synchronous rectifier for high efficiency 2.5V to 6V Input Voltage Range and eliminates the needs for an external 100% Duty Cycle in Dropout schottky diode. It is ideal for powering portable Current Mode Control equipment that runs from a single cell Lithium- Short Circuit Protection Ion (Li+) battery. The MP28119 can supply Thermal Fault Protection 600mA of load current from a 2.5V to 6V input Output Discharge Function voltage. <0.1 A Shutdown Current The output voltages of the MP28119EG-1.0 and 1.0V and 1.2V Fixed Out-put Versions MP28119EG-1.2 are fixed at 1.0V and 1.2V Ultra-Small 2x2 QFN Package respectively. The MP28119 can also run at 100% duty cycle APPLICATIONS for low dropout applications. Cellular and Smart Phones The MP28119 has an output discharge function Microprocessors and DSP Core Supplies that controls the discharging of the output PDAs capacitor. MP3 Players The MP28119 is available in an ultra-small 2x2 Digital Still and Video Cameras QFN package. Portable Instruments For MPS green status, please visit MPS website under Quality Assurance. MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION Efficiency vs. Load Current V =1V, L=2.2uH OUT 100 7 1 IN SW OUTPUT 90 Vin=3.3V 80 MP28119EG-1.0 70 60 5 4 EN OUT OFF ON 50 Vin=5V GND 40 6,8 30 20 10 0 10 100 1000 LOAD CURRENT(mA) MP28119 Rev.0.91 www.MonolithicPower.com 1 1/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved. EFFICIENCY (%)MP28119 ULTRA-SMALL 1.7MHZ, 600MA LOW-VOLTAGE SYNCHRONOUS STEP-DOWN CONVERTER ORDERING INFORMATION Part Number V Package Temperature Top Marking OUT MP28119EG-1.0 1.0V 9K MP28119EG-1.2* 1.2V 2x2 QFN8 -20C to +85C MP28119EG* ADJ 4Q * Contact factory for availability. ** MP28119EG-1.0 is fixed to 1V output, and MP28119EG-1.2 is fixed to 1.2V output. For RoHS Compliant Packaging, add suffix - LF (e.g. MP28119EG-LF) For Tape and Reel, add suffix -Z (e.g. MP28119EG-LF-Z). PACKAGE REFERENCE TOP VIEW TOP VIEW SW 1 8 GND SW 1 8 GND NC 2 7 IN NC 2 7 IN NC 3 6 GND NC 3 6 GND EN 4 5 OUT EN 4 5 FB EXPOSED PAD EXPOSED PAD ON BACKSIDE ON BACKSIDE CONNECT TO GND CONNECT TO GND External FB Fixed Output QFN8 QFN8 (2mm x 2mm) (2mm x 2mm) (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC V to GND .................................. 0.3V to +6.5V IN 2x2 QFN8 ................................ 80 ...... 16 ... C/W VSW to GND ........................... 0.3V to VIN +0.3V Notes: V , V to GND .......................... 0.3V to +6.5V FB EN 1) Exceeding these ratings may damage the device. Junction Temperature ............................. +150 C 2) The maximum allowable power dissipation is a function of the (2) maximum junction temperature. T (MAX) the junction-to- J Continuous Power Dissipation (T = +25C) A ambient thermal resistance and the ambient temperature JA ............................................................. 1.5W TA. The maximum allowable power dissipation at any ambient temperature is calculated using: PD(MAX)=(TJ(MAX)-TA)/ JA. Lead Temperature .................................. +260 C Exceeding the maximum allowable power dissipation will Storage Temperature .............. 65C to +150 C cause excessive die temperature, and the regulator will go (3) into thermal shutdown. Internal thermal shutdown circuitry Recommended Operating Conditions protects the device from permanent damage. 3) The device is not guaranteed to function outside of its Supply Voltage V ............................. 2.5V to 6V IN operating conditions. Output Voltage V ........................... 0.6V to 6V OUT 4) Measured on JESD51-7 4-layer board. Operating Temperature ............. 20 C to +85C MP28119 Rev.0.91 www.MonolithicPower.com 2 1/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved.