LT3462 Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT

The LT™3462/LT3462A are general purpose fixed frequency current mode inverting DC/DC converters. Both devices feature an integrated Schottky and a low VCESAT switch allowing a small converter footprint and lower parts cost. The LT3462 switches at 1.2MHz while the LT3462A switches at 2.7MHz. These high speeds enable the use of tiny, low cost and low height capacitors and inductors.

The LT3462/LT3462A operate in a dual inductor inverting topology that filters both the input and output currents. Very low output voltage ripple approaching 1mVP-P can be achieved when ceramic capacitors are used. Fixed frequency switching ensures a clean output free from low frequency noise typically present with charge pump solutions. The 40V switch allows a VIN to VOUT differential of up to 38V for dual inductor topologies.

Both devices provide a low impedance 1.265V reference output to supply the feedback resistor network. A ground referenced, high impedance FB input allows high feedback resistor values without compromising output accuracy.

The LT3462/LT3462A are available in a 6-lead SOT-23 package

产品特点 Features

Integrated Schottky Rectifier
Fixed Frequency 1.2MHz/2.7MHz Operation
Very Low Noise: 1mVP-P Output Ripple
Low VCESAT Switch: 270mV at 250mA
±5V at 100mA from 5V Input
�12V at 30mA from 3.3V Input
Low Input Bias Current GND Based FB Input
Low Impedance (40 Ohm) 1.265V Reference Output
High Output Voltage: Up to �38V
Wide Input Range: 2.5V to 16V
Uses Tiny Surface Mount Components
Low Shutdown Current: <10µA
Low Profile (1mm) SOT-23 (ThinSOT™) Package

应用

CCD Bias
LCD Bias
GaAs FET Bias
General Purpose Negative Voltage Supply

典型应用图

参数

LT3462 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LT3462AES6	SOT	6	E	$2.43
LT3462AES6#PBF	SOT	6	E	$2.43
LT3462AES6#TR	SOT	6	E	$2.43	$1.71
LT3462AES6#TRM	SOT	6	E	$2.43	$1.73
LT3462AES6#TRMPBF	SOT	6	E	$2.43	$1.73
LT3462AES6#TRPBF	SOT	6	E	$2.43	$1.71
LT3462ES6	SOT	6	E	$2.43
LT3462ES6#PBF	SOT	6	E	$2.43
LT3462ES6#TR	SOT	6	E	$2.43	$1.71
LT3462ES6#TRM	SOT	6	E	$2.43	$1.73
LT3462ES6#TRMPBF	SOT	6	E	$2.43	$1.73
LT3462ES6#TRPBF	SOT	6	E	$2.43	$1.71

LT3462 数据手册及相关资料下载

数据手册(英文) : LT3462/LT3462A - Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT.PDF
可靠性数据 : R390 Reliability Data .PDF