LT1373CN8

更新时间： 2024-09-16 22:55:51

品牌	Logo	应用领域
凌特 - Linear		稳压器开关
页数	文件大小	规格书
12页	184K
描述
250kHz Low Supply Current High Efficiency 1.5A Switching Regulator

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LT1373CN8 数据手册

LT1373

250kHz Low Supply Current

High Efficiency

1.5A Switching Regulator

FEATURES

DESCRIPTIO

The LT^®1373 is a low supply current high frequency

current mode switching regulator. It can be operated in all

standard switching configurations including boost, buck,

flyback, forward, inverting and “Cuk.” A 1.5A high effi-

ciency switch is included on the die, along with all oscilla-

tor, control and protection circuitry. All functions of the

LT1373 are integrated into 8-pin SO/PDIP packages.

■

1mA I_Qat 250kHz

■

Uses Small Inductors: 15µH

■

All Surface Mount Components

■

Only 0.6 Square Inch of Board Space

■

Low Minimum Supply Voltage: 2.7V

■

Constant Frequency Current Mode

■

Current Limited Power Switch: 1.5A

■

Regulates Positive or Negative Outputs

Compared to the 500kHz LT1372, which draws 4mA of

quiescent current, the LT1373 switches at 250kHz, typi-

cally consumes only 1mA and has higher efficiency. High

frequencyswitchingallowsforsmallinductorstobeused.

All surface mount components consume less than 0.6

square inch of board space.

■

Shutdown Supply Current: 12µA Typ

■

Easy External Synchronization

■

8-Pin SO or PDIP Packages

APPLICATIO S

New design techniques increase flexibility and maintain

ease of use. Switching is easily synchronized to an exter-

nal logic level source. A logic low on the shutdown pin

reduces supply current to 12µA. Unique error amplifier

circuitry can regulate positive or negative output voltage

while maintaining simple frequency compensation tech-

niques. Nonlinear error amplifier transconductance re-

duces output overshoot on start-up or overload recovery.

Oscillator frequency shifting protects external compo-

nents during overload conditions.

■

Boost Regulators

■

CCFL Backlight Driver

■

Laptop Computer Supplies

■

Multiple Output Flyback Supplies

■

Inverting Supplies

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

TYPICAL APPLICATIO

12V Output Efficiency

5V-to-12V Boost Converter

100

= 5V

f = 250kHz

L1*

22µH

MBRS120T3

†

OUT

12V

215k

S/S

OFF

C4**

22µF

LT1373

C1**

22µF

^†MAX I

OUT

GND

OUT

15µH 0.3A

22µH 0.35A

6, 7

24.9k

0.01µF

*SUMIDA CD75-220KC (22µH) OR

COILCRAFT D03316-153 (15µH)

AVX TPSD226M025R0200

100

1000

OUTPUT CURRENT (mA)

LT1373 • TA01

LT1373 • TA02

12 3 4 5 6 7...12

中文翻译

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LT1373CN8 替代型号

型号	品牌	替代类型	描述	数据表
LT1373IN8#PBF	Linear	完全替代	暂无描述

与LT1373CN8相关器件

型号	品牌	获取价格	描述	数据表
LT1373CS8	Linear	获取价格	250kHz Low Supply Current High Efficiency 1.5A Switching Regulator
LT1373CS8#PBF	Linear	获取价格	暂无描述
LT1373HVCN8	Linear	获取价格	250kHz Low Supply Current High Efficiency 1.5A Switching Regulator
LT1373HVCN8#PBF	Linear	获取价格	LT1373 - 250kHz Low Supply Current High Efficiency 1.5A Switching Regulator; Package: PDIP
LT1373HVCS8	Linear	获取价格	250kHz Low Supply Current High Efficiency 1.5A Switching Regulator
LT1373HVCS8#PBF	Linear	获取价格	LT1373 - 250kHz Low Supply Current High Efficiency 1.5A Switching Regulator; Package: SO;
LT1373HVCS8#TR	Linear	获取价格	LT1373 - 250kHz Low Supply Current High Efficiency 1.5A Switching Regulator; Package: SO;
LT1373HVCS8#TRPBF	Linear	获取价格	暂无描述
LT1373HVIN8	Linear	获取价格	250kHz Low Supply Current High Efficiency 1.5A Switching Regulator
LT1373HVIN8#PBF	Linear	获取价格	暂无描述

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