Datasheet > LTC1174CN8#PBF

LTC1174CN8#PBF

更新时间： 2023-03-15 00:00:00

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
20页	256K
描述
High Efficiency Step-Down and Inverting DC/DC Converter

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LTC1174CN8#PBF 数据手册

LTC1174

LTC1174-3.3/LTC1174-5

High Efficiency

Step-Down and Inverting

DC/DC Converter

FEATURES

DESCRIPTIO

The LTC^®1174 is a simple current mode DC/DC converter

ideally suited for 9V to 5V, 5V to 3.3V or 5V to –5V

operation. With an internal 0.9Ω switch (at a supply

voltage of 9V), the LTC1174 requires only four external

components to construct a complete high efficiency

DC/DC converter.

■

High Efficiency: Up to 94%

■

Peak Inductor Current Independent of

Inductor Value

Short-Circuit Protection

■

Optimized for 5V to –5V Applications

■

Wide V_INRange: 4V to 18.5V

■

Low Dropout Operation

UnderanoloadconditiontheLTC1174drawsonly130µA.

In shutdown, it draws a mere 1µA making this converter

ideal for current sensitive applications. In dropout, the

internal P-channel MOSFET switch is turned on continu-

ously allowing the user to maximize the life of the battery

source.

■

Low-Battery Detector

■

Pin Selectable Current Limit

■

Internal 0.9Ω Power Switch: V_IN= 9V

■

Only Four External Components Required

■

130µA Standby Current

■

Active Low Micropower Shutdown

The maximum inductor current of the LTC1174 family is

pin selectable to either 340mA or 600mA, optimizing

efficiency for a wide range of applications. Operation up to

200kHz permits the use of small surface mount inductors

and capacitors.

APPLICATIO S

■

Distributed Power Systems

■

Step-Down Converters

■

Inverting Converters

For applications requiring higher output current or ultra-

high efficiency, see the LTC1148 data sheet.

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

All other trademarks are the property of their respective owners.

■

Memory Backup Supply

■

Portable Instruments

■

Battery-Powered Equipment

TYPICAL APPLICATIO

High Efficiency Step-Down Converter

LTC1174-5 Efficiency

100

15µF*

25V

= 6V

×3

SHUTDOWN

= 9V

OUT

175mA

PGM

100µH^†

LTC1174-5

100µF**

10V

1N5818

GND

L = 100µH

= 5V

= 0V

OUT

PGM

1174 TA01

(3) AVX TPSD156K025

AVX TPSD107K010

LOAD CURRENT (mA)

100 200

^†COILTRONICS CTX100-4

1174 TA02

1174fe

12 3 4 5 6 7...20

下载PDF

与LTC1174CN8#PBF相关器件

型号	品牌	描述	获取价格	数据表
LTC1174CN8#TRPBF	Linear	Switching Regulator, Current-mode, 1A, 200kHz Switching Freq-Max, PDIP8	获取价格
LTC1174CN8-3.3	Linear	High Efficiency Step-Down and Inverting DC/DC Converter	获取价格
LTC1174CN8-3.3#PBF	Linear	High Efficiency Step-Down and Inverting DC/DC Converter	获取价格
LTC1174CN8-3.3#TR	Linear	IC 1 A SWITCHING REGULATOR, 200 kHz SWITCHING FREQ-MAX, PDIP8, 0.300 INCH, PLASTIC, DIP-8,	获取价格
LTC1174CN8-3.3#TRPBF	Linear	IC 1 A SWITCHING REGULATOR, 200 kHz SWITCHING FREQ-MAX, PDIP8, 0.300 INCH, LEAD FREE, PLAS	获取价格
LTC1174CN8-5	Linear	High Efficiency Step-Down and Inverting DC/DC Converter	获取价格