Datasheet > LT1935

LT1935

更新时间： 2024-10-03 05:43:27

品牌	Logo	应用领域
凌特 - Linear		转换器开关
页数	文件大小	规格书
8页	186K
描述
1.2MHz Boost DC/DC Converter in ThinSOT with 2A Switch

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LT1935 数据手册

LT1935

1.2MHz Boost DC/DC

Converter in ThinSOT

with 2A Switch

FEATURES

DESCRIPTIO

The LT^®1935 is the industry’s highest power SOT-23

switching regulator. Its unprecedented 2A, 40V internal

switch allows high output currents to be generated in a

small footprint. Intended for space-conscious applica-

tions, the LT1935 switches at 1.2MHz, allowing the use of

tiny, low profile inductors and capacitors 2mm or less in

height. The NPN switch achieves a V_CESATof just 180mV

at 2A independent of supply voltage, resulting in high

efficiency even at maximum power levels from a 3V input.

■

1.2MHz Switching Frequency

■

High Output Voltage: Up to 38V

■

Wide Input Range: 2.3V to 16V

■

Low V_CESATSwitch: 180mV at 2A

■

Soft-Start

■

Uses Small Surface Mount Components

■

5V at 1A from 3.3V Input

■

12V at 600mA from 5V Input

■

Low Shutdown Current: <1µA

■

Pin-for-Pin Compatible with the LT1613 and LT1930

A constant frequency, internally compensated, current

mode PWM architecture results in low, predictable output

noisethatiseasytofilter.LowESRceramiccapacitorscan

be used on the output, further reducing noise to the

millivolt level. The high voltage switch on the LT1935 is

rated at 40V, making the device ideal for boost converters

up to 38V as well as for single-ended primary inductance

converter (SEPIC) and flyback designs. The device can

generate5Vatupto1Afroma3.3Vsupplyor5Vat550mA

from four alkaline cells in a SEPIC design.

Low Profile (1mm) SOT-23 (ThinSOT^TM) Package

■

APPLICATIO S

■

Digital Cameras

■

Battery Backup

■

LCD Bias

■

Local 5V or 12V Supply

■

PC Cards

■

xDSL Power Supply

■

TFT-LCD Bias Supply

The LT1935 is available in a 5-lead SOT-23 package.

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

ThinSOT is a trademark of Linear Technology Corporation.

TYPICAL APPLICATIO

Efficiency, V_OUT= 12V

4.2µH

OUT

= 5V

12V

600mA

= 3.3V

84.5k

10k

4.7µF

LT1935

10µF

ON OFF

SHDN

GND

D1: ON SEMI MBRM120

L1: SUMIDA CDRH5D28-4R2

1935 F01

Figure 1. 5V to 12V, 600mA Step-Up DC/DC Converter

100 200 300 400 500

LOAD CURRENT (mA)

700

600

1935 F01b

1935f

12 3 4 5 6 7 8

中文翻译

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与LT1935相关器件

型号	品牌	获取价格	描述	数据表
LT1935ES5	Linear	获取价格	1.2MHz Boost DC/DC Converter in ThinSOT with 2A Switch
LT1935ES5	Linear Systems	获取价格	1.2MHz Boost DC/DC Converter in ThinSOT with 2A Switch
LT1935ES5#PBF	Linear	获取价格	LT1935 - 1.2MHz Boost DC/DC Converter in ThinSOT with 2A Switch; Package: SOT; Pins: 5; Te
LT1935ES5#TRM	Linear	获取价格	LT1935 - 1.2MHz Boost DC/DC Converter in ThinSOT with 2A Switch; Package: SOT; Pins: 5; Te
LT1935ES5#TRMPBF	Linear	获取价格	暂无描述
LT1936	Linear	获取价格	1.4A, 500kHz Step-Down Switching Regulator
LT1936	ADI	获取价格	1.4A、500kHz 降压型开关稳压器
LT1936EMS8E	Linear	获取价格	1.4A, 500kHz Step-Down Switching Regulator
LT1936EMS8E#TR	Linear	获取价格	LT1936 - 1.4A, 500kHz Step-Down Switching Regulator; Package: MSOP; Pins: 8; Temperature R
LT1936EMS8E#TRPBF	Linear	获取价格	LT1936 - 1.4A, 500kHz Step-Down Switching Regulator; Package: MSOP; Pins: 8; Temperature R

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