Datasheet > LT1316

LT1316

更新时间： 2024-09-15 22:55:51

品牌	Logo	应用领域
凌特 - Linear		转换器
页数	文件大小	规格书
16页	347K
描述
Micropower DC/DC Converter with Programmable Peak Current Limit

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LT1316 数据手册

LT1316

Micropower

DC/DC Converter

with Programmable

Peak Current Limit

DESCRIPTION

FEATURES

The LT^®1316 is a micropower step-up DC/DC converter

that operates from an input voltage as low as 1.5V. A

programmable input current limiting function allows pre-

cise control of peak switch current. Peak switch current

can be set to any value between 30mA and 500mA by

adjusting one resistor. This is particularly useful for

DC/DCconvertersoperatingfromhighsourceimpedance

inputs such as lithium coin cells or telephone lines.

■

Precise Control of Peak Switch Current

■

Quiescent Current:

33µA in Active Mode

3µA in Shutdown Mode

■

Low-Battery Detector Active in Shutdown

■

Low Switch V_CESAT: 300mV at 500mA

■

8-Lead MSOP and SO Packages

■

Operates with V_INas Low as 1.5V

■

Logic Level Shutdown Pin

The fixed off-time, variable on-time regulation scheme

results in quiescent current of only 33µA in active mode.

Quiescent current decreases to 3µA in shutdown with the

low-battery detector still active.

APPLICATIONS

■

Battery Backup

The LT1316 is available in 8-lead MSOP and SO packages.

■

LCD Bias

■

Low Power –48V to 5V/3.3V Converters

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

TYPICAL APPLICATION

2-Cell to 5V Step-Up Converter

Efficiency vs Load Current

47µH

50mA

3.3V

2.5V

1.8V

SHDN

47µF

LT1316

2 CELLS

LBI

LBO

GND

324k

SET

10k

D1: MOTOROLA MBR0520L

L1: SUMIDA CD43-470

1316 TA01

0.1

100

LOAD CURRENT (mA)

1316 TA02

12 3 4 5 6 7...16

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