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 

white led drivers

CAT3604

4-Channel Fractional Charge Pump LED Driver

Features

■ automatically switches from 1x LDO mode to

1.5x boost mode

■ inductor-less design minimizes EMI interference

■ drives up to 4 Parallel LEDs at 30mA per channel

■ very low input ripple and noise

■ “zero”shutdown current extends battery life

■ power efficiency up to 93%

Battery

+

-

VIN

3V to 4.2V

■ optimized for use with Lithium-Ion battery

systems

Package Information

■ 16 pad TQFN (4x4mm, height 0.8mm max)

EN

CIN

Control 0

Control 1

Control 2

RSET

C1+ C1- C2+ C2-

VIN

VOUT

EN CAT3604

CTR0

LED1

CTR1

LED2

CTR2

LED3

RSET

GND

LED4

COUT

20mA

CAT3606

Featured Products

6-Channel Fractional Charge Pump LED Driver

C1-

C1+ C2-

C2+

3≤VIN≤4.2V VIN

Battery + CIN

-

EN

RSET

RSET

ENM

ENS

1x mode (LDO)

1.5x Charge Pump

CAT3606

VOUT

1MHz

Oscillator

1.2V

Reference

Current

Setting

LED Output

Selection

Mode Control

Main

Sub

LED1

LED2

LED3

LED4

LED5

LED6

6 Current

Sink Regulators

COUT

20mA

GND

Features

■ independent dimming and standby control

for Main and Sub displays

■ automatically switches from 1x LDO mode to

1.5x boost mode

■ inductor-less design minimizes EMI

interference

■ drives up to 6 Parallel LEDs at 30mA per

channel

■ very low input ripple and noise

■ “zero”shutdown current extends battery life

■ power efficiency up to 90%

■ short circuit detect/disable on all channels

■ optimized for use with Lithium-Ion battery systems

Package Information

■ 16-pad TQFN (4x4mm, height 0.8mm max)

ALOGEN FR

4

Visit our website for samples, data sheets, and additional product information.

LEA

D

F

R

E

E

TM

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