LT3461A - 3MHz Step-Up DC/DC Converters with Integrated Schottky in ThinSOT

The LT3461/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.

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

Typical Application

Applications

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

Packaging

Order Information

Part Number	Package	Temp	Price(1-99)	Price (1k)*
LT3461AES6#PBF	SOT-23	E	$2.43
LT3461AES6#TRMPBF	SOT-23	E	$2.43	$1.73
LT3461AES6#TRPBF	SOT-23	E	$2.43	$1.71

Demo Boards

Part Number	Description	Price
DC627A-B	LT3461AES6 Demo Board \| 3MHz, Vin = 3V to 6V, Vout = 12V, (at Vin = 5V, Iout = 70mA)	$75.00