LT3461 1.3MHz/3MHz Step-Up DC/DC Converters with Integrated Schottky in ThinSOT

The LT®3461/LT3461A are general purpose fixed frequency current mode step-up DC/DC converters. Both devices feature an integrated Schottky and a low VCESAT switch allowing a small converter footprint and lower parts cost. The LT3461 switches at 1.3MHz while the LT3461A switches at 3MHz. These high switching frequencies enable the use of tiny, low cost and low height capacitors and inductors. The constant switching frequency results in predictable output noise that is easy to filter, and the inductor based topology ensures an input free from switching noise typically present with charge pump solutions. The high voltage switch in the LT3461/LT3461A is rated at 40V making the device ideal for boost converters up to 38V.

The LT3461/LT3461A are available in a low profile (1mm) SOT-23 package

产品特点 Features

Integrated Schottky Rectifier
Fixed Frequency 1.3MHz/3MHz Operation
High Output Voltage: Up to 38V
Low VCESAT Switch: 260mV at 250mA
12V at 70mA from 5V Input
5V at 115mA from 3.3V Input
Wide Input Range: 2.5V to 16V
Uses Small Surface Mount Components
Low Shutdown Current: <1µA
Soft-Start
Low Profile (1mm) SOT-23 (ThinSOTTM) Package

参数

应用

Digital Cameras
CCD Bias Supply
XDSL Power Supply
TFT-LCD Bias Supply
Local 5V or 12V Supply
Medical Diagnostic Equipment
Battery Backup

典型应用图

LT3461 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) *
LT3461AES6	SOT	6	E	$2.43
LT3461AES6#PBF	SOT	6	E	$2.43
LT3461AES6#TR	SOT	6	E	$2.43	$1.71
LT3461AES6#TRM	SOT	6	E	$2.43	$1.73
LT3461AES6#TRMPBF	SOT	6	E	$2.43	$1.73
LT3461AES6#TRPBF	SOT	6	E	$2.43	$1.71
LT3461ES6	SOT	6	E	$2.43
LT3461ES6#PBF	SOT	6	E	$2.43
LT3461ES6#TR	SOT	6	E	$2.43	$1.71
LT3461ES6#TRM	SOT	6	E	$2.43	$1.73
LT3461ES6#TRMPBF	SOT	6	E	$2.43	$1.73
LT3461ES6#TRPBF	SOT	6	E	$2.43	$1.71

LT3461 数据手册及相关资料下载

数据手册(英文) : LT3461/LT3461A - 1.3MHz Step-Up DC/DC Converter in ThinSOT.PDF
设计要点 (英文) : DN316 - Ultralow Noise Switching Power Supplies Simplify EMI Compliance.PDF
可靠性数据 : R390 Reliability Data .PDF