Datasheet > LT3462

LT3462

更新时间： 2024-09-15 04:19:35

品牌	Logo	应用领域
凌特 - Linear		转换器
页数	文件大小	规格书
8页	226K
描述
Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT

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LT3462 数据手册

LT3462/LT3462A

Inverting 1.2MHz/2.7MHz

DC/DC Converters with

Integrated Schottky in ThinSOT

FEATURES

DESCRIPTIO

The LT^®3462/LT3462A are general purpose fixed fre-

quency current mode inverting DC/DC converters. Both

devices feature an integrated Schottky and a low V_CESAT

switchallowingasmallconverterfootprintandlowerparts

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.

■

Integrated Schottky Rectifier

■

Fixed Frequency 1.2MHz/2.7MHz Operation

■

Very Low Noise: 1mV_P-POutput Ripple

■

Low V_CESATSwitch: 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 (40Ω) 1.265V Reference Output

The LT3462/LT3462A operate in a dual inductor inverting

topology that filters both the input and output currents.

Verylowoutputvoltagerippleapproaching1mV_P-Pcanbe

achieved when ceramic capacitors are used. Fixed fre-

quency switching ensures a clean output free from low

frequency noise typically present with charge pump solu-

tions. The 40V switch allows a V_INto V_OUTdifferential of

up to 38V for dual inductor topologies.

■

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^TM) Package

■

APPLICATIO S

■

Both devices provide a low impedance 1.265V reference

output to supply the feedback resistor network. A ground

referenced, highimpedanceFBinputallowshighfeedback

resistor values without compromising output accuracy.

CCD Bias

■

LCD Bias

■

GaAs FET Bias

General Purpose Negative Voltage Supply

■

, LTC and LT are registered trademarks of Linear Technology Corporation.

ThinSOT is a trademark of Linear Technology Corporation

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

package.

TYPICAL APPLICATIO

5V to –5V, 100mA Inverting DC/DC Converter

Efficiency

1µF

= 25°C

22µH

= 5V

OUT

–5V

= 3.3V

100mA

267k

22pF

LT3462A

SDREF

1µF

10µF

68.1k

GND

3462 TA01

100

3462 TA01b

LOAD CURRENT (mA)

3462af

12 3 4 5 6 7 8

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与LT3462相关器件

型号	品牌	获取价格	描述	数据表
LT3462_15	Linear	获取价格	Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT
LT3462A	Linear	获取价格	Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT
LT3462A_15	Linear	获取价格	Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT
LT3462AES6	Linear	获取价格	Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT
LT3462AES6#PBF	Linear	获取价格	LT3462 - Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT; Pac
LT3462AES6#TR	Linear	获取价格	LT3462 - Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT; Pac
LT3462AES6#TRM	Linear	获取价格	暂无描述
LT3462AES6#TRMPBF	Linear	获取价格	LT3462 - Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT; Pac
LT3462ES6	Linear	获取价格	Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT
LT3462ES6#PBF	Linear	获取价格	LT3462 - Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT; Pac

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