MP2456GJ-Z Monolithic Power Systems

MP2456 0.5A, 50V, 1.2MHz Step-Down Converter in a TSOT23-6 The Future of Analog IC Technology DESCRIPTION FEATURES The MP2456 is a monolithic, step-down, switch- 0.5A Peak Output Current mode converter with a built-in power MOSFET. 1 Internal Power MOSFET It achieves a 0.5A peak-output current over a Capable to Start Up with Big Output wide input supply range with excellent load and Capacitor line regulation. Current-mode operation Stable with Low-ESR Ceramic Output provides a fast transient response and eases Capacitors loop stabilization. Fault condition protections Up to 90% Efficiency include cycle-by-cycle current limiting and thermal 0.1 A Shutdown Mode shutdown. Fixed 1.2MHz Frequency The MP2456 requires a minimal number of Thermal Shutdown readily-available external components. The Cycle-by-Cycle Over-Current Protection MP2456 is available in a TSOT23-6 package. Wide 4.5V-to-50V Operating Input Range Output Adjustable from 0.81V to 0.9xV IN Available in a TSOT23-6 Package APPLICATIONS Power Meters Distributed Power Systems Battery Chargers Pre-Regulator for Linear Regulators WLED Drivers All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Products, Quality Assurance page. MPS and The Future of Analog IC Technology are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION 1 BST 5 VIN IN C2 100nF C1 MP2456 4.7F L1 10H GND 5V 6 U1 SW VOUT C3 D1 10F R2 4 124k EN EN 3 FB GND GND R1 2 23.7k MP2456 Rev. 1.01 www.MonolithicPower.com 1 1/24/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2017 MPS. All Rights Reserved. MP2456 0.5A, 50V, 1.2MHz, STEP-DOWN CONVERTER IN A TSOT23-6 ORDERING INFORMATION Part Number* Package Top Marking TSOT23-6 MP2456GJ AGV * For Tape & Reel, add suffix Z (eg. MP2456GJZ) PACKAGE REFERENCE TOP VIEW BST 1 6 SW GND 2 5 IN FB 3 4 EN (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC Supply Voltage V ......................... 0.3V to 52V IN TSOT23-6 ............................... 220 ... 110 C/W V ......................................... 0.3V to V +0.3V SW IN Notes: V ....................................................... V + 6V BS SW 1) Exceeding these ratings may damage the device. All Other Pins ................................. 0.3V to +6V 2) The maximum allowable power dissipation is a function of the EN Sink Current ....................................... 100A maximum junction temperature T(MAX), the junction-to- J (2) ambient thermal resistance , and the ambient temperature JA Continuous Power Dissipation (T = +25C) A T . The maximum allowable continuous power dissipation at A TSOT23-6 .............................................. 0.568W any ambient temperature is calculated by P (MAX)=(T (MAX)- D J Junction Temperature ............................... 150C T )/ . Exceeding the maximum allowable power dissipation A JA will cause excessive die temperature, and the regulator will go Lead Temperature .................................... 260C into thermal shutdown. Internal thermal shutdown circuitry Storage Temperature .............. 65C to +150C protects the device from permanent damage. 3) The device function is not guaranteed outside of the (3) recommended operating conditions. Recommended Operating Conditions 4) Measured on JESD51-7, 4-layer PCB.. Supply Voltage V ........................... 4.5V to 50V IN Output Voltage V ................. 0.81V to 0.9V OUT IN Operating Junction Temp..... 40C to +125C MP2456 Rev. 1.01 www.MonolithicPower.com 2 1/24/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2017 MPS. All Rights Reserved.