Datasheet > LM1938SF6

LM1938SF6

更新时间： 2022-02-26 13:09:26

品牌	Logo	应用领域
韩国泰进 - HTC		/
页数	文件大小	规格书
6页	146K
描述
White LED Step-Up Converternull

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LM1938SF6 数据手册

White LED Step-Up Converter

LM1938

FEATURES

z Inherently Matched LED Current

z Drives Up to 27 LEDs from a 5V Supply

z 36V Rugged Bipolar Switch

z Fast 1.2MHz Switching Frequency

z Vovp(MAX) = 29V

SOT-23 6L PKG

z Moisture Sensitivity Level 3

APPLICATION

z Cellular Phones

z PDAs, Handheld Computers

z Digital Cameras

z MP3 Players

ORDERING INFORMATION

Device

Package

SOT-23 6L

LM1938SF6

z GPS Receivers

DESCRIPTION

The LM1938 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current.

The device can drive up to 27 LEDs from a 5V supply.

Additional feature include output voltage limiting when LEDs are disconnected.

Absolute Maximum Ratings ^{(Note 1)}

CHARACTERISTIC

SYMBOL

RATINGS

UNIT

Input Voltage

SW Voltage

FB Voltage

V_IN

V_SW

V_FB

SHDN Voltage

V_SHDN

T_SOL

T_STG

T_OPR

T_J(max)

Lead Temperature (Soldering, 10 sec)

Storage Temperature Range

300

°C

-65 ~ 150

0 ~ 70

125

Operating Temperature Range

Maximum Junction Temperature

Note 1. Absolute Maximum Ratings are those values beyond which the life of the device may be impaired.

Aug. 2011 – Pre

- 1 -

HTC

12 3 4 5 6

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