MP1493DS-LF

MP1493 3A, 4.2V-16V Input, Fast Transient Synchronous Step-down Converter The Future of Analog IC Technology DESCRIPTION FEATURES The MP1493 is a fully integrated, high Wide 4.2V to 16V Operating Input Range efficiency 3A synchronous rectified step-down 3A Output Current converter. The MP1493 operates at high Adaptive COT for Fast Transient efficiency over a wide output current load range. Response Adaptive Constant-On-Time (COT) control Low R (ON) Internal Power MOSFETs DS mode provides fast transient response, eases Proprietary Switching Loss Reduction loop stabilization, and operates with a low-cost Technique electrolytic capacitor. Programmable Switching Frequency OCP, SCP, OVP, UVP Protection and The MP1493 requires a minimum number of Thermal Shutdown readily available standard external components Optional OCP Protection: Latch-off Mode and is available in an 8-pin SOIC ROHS compliant package. and Hiccup Mode Output Adjustable from 0.805V to 13V APPLICATIONS Digital Set Top Boxes Flat Panel Television and Monitors Distributed Power Systems All MPS parts are lead-free and adhere to the RoHS directive. 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 1 4 VIN IN BST R 7 453k MP1493 3 SW 8 VOUT 2.5V FREQ 5 R1 499k BYP 41k 7 FB 6 ON/OFF EN R2 20k GND 2 MP1493 Rev. 1.15 www.MonolithicPower.com 1 12/9/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2013 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP1477MP1493 3A, 4.2V-16V INPUT, FAST TRANSIENT SYNCHRONOUS STEP-DOWN CONVERTER ORDERING INFORMATION Part Number OCP Protection Package Top Marking Free Air Temperature (T ) A Latch-off Mode MP1493DS* MP1493 SOIC8 -40 C to +85C Hiccup Mode MP1493DS-A MP1493-A * For Tape & Reel, add suffix Z (e.g. MP1493DSZ). For RoHS Compliant Packaging, add suffix LF (e.g. MP1493DSLFZ) PACKAGE REFERENCE SOIC8 (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC SOIC8..................................... 90...... 45... C/W Supply Voltage V ....................................... 19V IN V ...................................................................... SW Notes: -0.3V (-5V for <10ns) to 19V (24V for <10ns) 1) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the V ...................................................... V + 6V BST SW maximum junction temperature T (MAX), the junction-to- J All Other Pins..................................-0.3V to +6V ambient thermal resistance , and the ambient temperature JA (2) T . The maximum allowable continuous power dissipation at Continuous Power Dissipation (T = +25C) A A any ambient temperature is calculated by P (MAX) = (T D J SOIC8 ...................................................... 1.39W (MAX)-T )/ . Exceeding the maximum allowable power A JA dissipation will cause excessive die temperature, and the Junction Temperature ..............................150C regulator will go into thermal shutdown. Internal thermal Lead Temperature ....................................260C shutdown circuitry protects the device from permanent Storage Temperature............... -65C to +150 C damage. 3) The device is not guaranteed to function outside of its (3) operating conditions. Recommended Operating Conditions 4) Measured on JESD51-7, 4-layer PCB. Supply Voltage V ...........................4.2V to 16V IN Output Voltage V .....................0.805V to 13V OUT Operating Junction Temp. (T ). -40C to +125C J MP1493 Rev. 1.15 www.MonolithicPower.com 2 12/9/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2013 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP1477