MP2359DT-LF-Z

MP2359 1.2A, 24V, 1.4MHz Step-Down Converter in a TSOT23-6 The Future of Analog IC Technology DESCRIPTION FEATURES The MP2359 is a monolithic step-down switch 1.2A Peak Output Current mode converter with a built-in power MOSFET. 0.35 Internal Power MOSFET Switch It achieves 1.2A peak output current over a Stable with Low ESR Output Ceramic wide input supply range with excellent load and Capacitors line regulation. Current mode operation Up to 92% Efficiency provides fast transient response and eases loop 0.1 A Shutdown Mode stabilization. Fault condition protection includes Fixed 1.4MHz Frequency cycle-by-cycle current limiting and thermal Thermal Shutdown shutdown. Cycle-by-Cycle Over Current Protection The MP2359 requires a minimum number of Wide 4.5V to 24V Operating Input Range readily available standard external components. Output Adjustable from 0.81V to 15V The MP2359 is available in TSOT23-6 and Available in TSOT23-6 and SOT23-6 SOT23-6 packages. Packages EVALUATION BOARD REFERENCE APPLICATIONS Board Number Dimensions Distributed Power Systems EV2359DJ-00B 2.1X x 1.9Y x 0.4Z Battery Charger Pre-Regulator for Linear Regulators WLED Drivers 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 Currents 100 5 1 VIN = 12V V IN BST IN 90 12V CB 80 10nF 6 V 70 OUT SW VIN = 24V 3.3V 1.2A MP2359 D1 60 B230A 50 4 3 40 OFF ON EN FB GND 30 2 20 10 VOUT = 5V 0 0.01 0.1 1 10 LOAD CURRENT (A) MP2359 Rev. 1.21 www.MonolithicPower.com 1 7/18/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2011 MPS. All Rights Reserved. EFFICIENCY (%)MP2359 1.2A, 24V, 1.4MHz STEP-DOWN CONVERTER IN A TSOT23-6 ORDERING INFORMATION Part Number Package Top Marking Free Air Temperature (T ) A TSOT23-6 MP2359DJ* F8 -40 C to +85 C SOT23-6 MP2359DT** J6 -40 C to +85 C *For Tape & Reel, add suffix Z (eg. M2359DJZ) For RoHS compliant packaging, add suffix LF (eg. MP2359DJLFZ) **For Tape & Reel, add suffix Z (eg. M2359DTZ) For RoHS compliant packaging, add suffix LF (eg. MP2359DTLFZ) 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 ....................................... 26V IN TSOT23-6.............................. 220.... 110.. C/W V ............................................................... 27V SW SOT23-6 ................................ 220.... 110.. C/W V ....................................................... V + 6V BS SW All Other Pins..................................-0.3V to +6V Notes: (2) 1) Exceeding these ratings may damage the device. Continuous Power Dissipation (T = +25C) A 2) The maximum allowable power dissipation is a function of the TSOT23-6 .............................................. 0.568W maximum junction temperature T(MAX), the junction-to- J SOT23-6 ................................................ 0.568W ambient thermal resistance , and the ambient temperature JA T . The maximum allowable continuous power dissipation at A Junction Temperature...............................150C any ambient temperature is calculated by P (MAX)=(T (MAX)- D J Lead Temperature ....................................260C T )/ . Exceeding the maximum allowable power dissipation A JA will cause excessive die temperature, and the regulator will go Storage Temperature............... -65C to +150 C into thermal shutdown. Internal thermal shutdown circuitry (3) protects the device from permanent damage. Recommended Operating Conditions 3) The device function is not guaranteed outside of the recommended operating conditions. Supply Voltage V ...........................4.5V to 24V IN 4) Measured on JESD51-7, 4-layer PCB.. Output Voltage V .......................0.81V to 15V OUT Ambient Temperature ................ -40 C to +85 C Max input current into the EN pin............. 300 A MP2359 Rev. 1.21 www.MonolithicPower.com 2 7/18/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2011 MPS. All Rights Reserved.