CAT7311 查看數據表（PDF） - Catalyst Semiconductor => Onsemi

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产品描述 (功能)

生产厂家

CAT7311

i2c and smbus i/o port expanders

Catalyst Semiconductor => Onsemi 

CAT4237

High Voltage CMOS Boost White LED Driver

Features

■ drives 8 white LEDs in series from 3V

■ low quiescent ground current 0.3mA

■ power efficiency over 84%

VIN

3V to 4.2V

C1

■ adjustable output current (up to 40mA)

■ high-frequency 1MHz operation

■ high voltage power switch

■ shutdown current less than 1 µA

■ load fault protection against open-circuits

■ tight line/load regulation

Package Information

■ thin SOT23 5-lead (1mm max height)

white led drivers

D1

L

SW

VIN

CAT4237

VOUT

White

LEDs

SHDN

GND

VFB = 300mV

FB

20mA

CAT310

Automotive 10-Channel Serial Latched LED Driver

Featured Features Products

■ output drivers withstand load-dump transients up to 40V

■ operates over automotive temperature range: -40 to +125°C

■ drives 10 LEDs in parallel at 50mA per channel

■ output channels can drive a combination of white or color LEDs

VBATTERY = 14V (typical)

■ serial output allows cascading of multiple CAT310’s to drive

greater than 10 LEDs

■ operating voltage up to 17V

■ simple LED pattern programming through the 10 MHz serial

interface

■ blank pin provides global on/off control of all LEDs

■ under Voltage Lockout

■ over Voltage Protection

VCC +

5V -

+

VBATT

-

C1

Controller

30mA

VBATT

VCC

OUT0

CAT310 OUT1

OUT2

SCLK

XLAT

BLANK

OUT9

SIN

SOUT

GND PGND

Package Information

■ 20-lead SOIC

ALOGEN FR

LEAD

F

R

E

E

TM

www.catsemi.com

RS RS RS

RS

5

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