SC1470 Synchronous Buck Power Supply Controller

SEMTECH ELECTRONICS

Description

www.DataSheet4U.com Synchronous Buck Power Supply Controller POWER MANAGEMENT .
The SC1470 is a single output, constant on-time synchronous-buck, pseudo fixed frequency, PWM controller intended for use in notebook computers and ot.

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Datasheet Specifications

Part number: SC1470
Manufacturer: SEMTECH ELECTRONICS
File Size: 495.28 KB
Datasheet: SC1470_SEMTECHELECTRONICS.pdf
Description: Synchronous Buck Power Supply Controller

Features

* include high efficiency and fast dynamic response with no minimum on time. The excellent transient response means that SC1470 based solutions will require less output capacitance than competing fixed frequency converters. SC1470 Features Constant on-time for fast dynamic response Programma

Applications

* Typical Application Circuit 1.8V - 25V +5V + R1 C1 + C2 D1 R2 +5V +5V R3 1 2 3 4 5 6 7 C6 SC1470 Q2 U1 BST EN/PSV DH TON LX VOUT ILIM VCCA VDDP FBK PGOOD DL GND PGND 14 13 12 11 10 9 8 Q1 C3 L1 0.5V - 5.5V PGOOD C5 R4 D2 + C4 R5 R6 Revision: October 14, 2004 1 www. semtech. com SC

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SC1470 Synchronous Buck Power Supply Controller SEMTECH ELECTRONICS

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