Part Number: MP1583
Function: 3A, 23V, 385KHz, Step-Down Converter
Package: DIP, SOIC 8 Pin Type
Manufacturer: MPS ( www.MonolithicPower.com )
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Description
The MP1583 is a step -down regulator with a built-in internal Power MOSFET. It achieves 3A of continuo us output current over a wide input supply range with excellent load and line regulation. Current mo de operatio n provides f ast transien t response and eases loop stabilization. Fault condition protection includes cycle-by-cycle current limiting a nd thermal shutdown. An adjustab le soft-start reduces the stress on the input source at startup. In shutdown mode the regulator dr aws 20 μA of supply current. The MP158 3 requires a minimu m number of external components, providing a compact solution.
Features
• 3A Output Current • Programma ble Soft-Start • 100m Ω Internal Power MOSFET Switch • Stable with Low ESR Outpu t Ceramic Ca pacitors • Up to 95% Efficiency • 20 μA Shutdown Mode • Fixed 385KHz Frequency • Thermal Shutdown • Cycle-by-Cycle Over Current Protection • Wide 4.75V to 23V Operating Input Range • Output Adjustable from 1.22V to 21V • Under-Voltage Lockout Applications • Distributed Power Systems • Battery Chargers • Pre-Regulator for Linear Regulators “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION INPUT 4.75V to 23V OPEN = AUTOMATIC STARTUP 10μ F CERAMIC 7 Efficiency Curve 2 IN EN 1 BS 3 SW 10nF 15μ H 10.5kΩ OUTPUT 2.5V 3A 100 90 EFFICIENCY (%) VIN = 10V VOUT=5.0V 8 MP1583 SS GND 4 FB COMP 6 5 80 70 60 50 VOUT=2.5V VOUT=3.3V B330A 5.6nF 10kΩ 22μ F CERAMIC 10nF 3.9kΩ 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 LOAD CURRENT (A) MP1583_EC01 MP1583 Rev. 3.1 6/20/2011 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 1 http:// MP1583 – 3A, 23V, 385KHz STEP-DOWN CONVERTER ORDERING INFORMATION Part Number- MP1583DN SOIC8E MP1583DP PDIP8 Package Top Marking MP1583DN MP1583DP Free Air Temperature (TA) –40°C to +85°C –40°C to +85°C – For Tape & Reel, add suffix –Z (e.g. MP8736DL–Z) For RoHS compliant packaging, add suffix –LF (e.g. MP8736DL–LF–Z) PACKAGE REFERENCE TOP VIEW SOIC8N/PDIP8 BS IN SW GND 1 2 3 4 8 7 6 5 SS EN COMP FB EXPOSED PAD (SOIC8N ONLY) CONNECT TO PIN 4 MP1583_PD01 ABSOLUTE MAXIMUM RATINGS (1) Supply Voltage VIN .–0.3V to +28V Switch Voltage VSW . –1V to VIN + 0.3V Bootstrap Voltage VBS VSW – 0.3V to VSW + 6V FB, COMP and SS Pins.–0.3V to +6V (2) Continuous Power Dissipation (T A = +25°C) SOIC8E 2.5W PDIP8 1.2W Junction Temperature .150°C Lead Temperature 260°C Storage Temperature . –65°C to +150°C Thermal Resis [.]
MP1583 Datasheet
