SC623AEVB datasheet(1/21 Pages) SEMTECH

부품명	SC623AEVB

상세설명	LED Light Management Unit Charge Pump, 4 LEDs, 400mA Flash LED, and I2C Interface

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제조업체	SEMTECH [Semtech Corporation]

홈페이지	http://www.semtech.com

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POWER MANAGEMENT

1

SC623A

LED Light Management Unit

Charge Pump, 4 LEDs, 400mA Flash LED,

and I2C Interface

Features

Input supply voltage range — 3.0V to 5.5V

Charge pump modes — 1x, 1.5x and 2x

Four programmable current sinks with 32 steps from

0.5mA to 25mA

Flash LED — 400mA max in flash mode, 250mA max

continuous for spotlight

Charge pump frequency — 250kHz

I2C compatible interface — up to 400kHz

Backlight current accuracy ±1.5% typical

Backlight current matching ±0.5% typical

Programmable fade-in/fade-out for main backlight

External flash control pin to sync with camera

Optional 1s flash time out

Automatic sleep mode (LEDs off ) — I

Q

= 100μA

Low shutdown current — 0.1μA (typical)

Ultra-thin package — 3mm x 3mm x 0.6mm

Fully WEEE and RoHS compliant

Applications

Cellular phone backlighting and flash

PDA backlighting and flash

Camera I/O and core power

Description

The SC623A is a high efficiency charge pump LED driver

using Semtech’s proprietary mAhXLifeTM technology.

Performance is optimized for use in single-cell Li-ion

battery applications.

The

charge

pump

provides

backlight

current

in

conjunction with four matched current sinks. It also can

supply continuous or bursted current to a flash LED using

the dedicated flash driver current sink.The load and supply

conditions determine whether the charge pump operates

in 1x, 1.5x, or 2x mode. An optional fading feature that

gradually adjusts the backlight current is provided to

simplify control software. A flash-timeout feature disables

the flash if active for longer than 1 second.

The SC623A uses an I2C compatible serial interface. The

interface controls all functions of the device, including

backlight and flash currents. The flash/spotlight output is

triggered via either the I2C interface or a dedicated pin.

In sleep mode, the device reduces quiescent current to

100

μA while continuing to monitor the serial interface.

Total current reduces to 0.1μA in shutdown.

SC623A

VIN

SDA

FLEN

AGND

PGND

VOUT

BL 1

BL 2

BL 3

FL

BL 4

FLASH

CIN

2.2μF

MAIN BACKLIGHT

1

C + C1- C2+ C2-

I2C Data

Flash Control

Enable Control

I2C Clock

SCL

EN

VBAT

C1

2.2μF

C2

2.2μF

COUT

4.7μF

US Patents: 6,504,422; 6,794,926

Typical Application Circuit

June 27, 2007

유사한 부품 번호 - SC623AEVB

제조업체	부품명	데이터시트	상세설명
Semtech Corporation	SC623	274Kb / 21P	LED Light Management Unit Charge Pump, 4 LEDs, 400mA Flash LED, and SemWireTM Interface
Infinite Electronics In...	SC6231	505Kb / 3P	BNC Female Connector Stub Terminal Solder Attachment 4 Hole Flange REV 2.1
Semtech Corporation	SC623EVB	274Kb / 21P	LED Light Management Unit Charge Pump, 4 LEDs, 400mA Flash LED, and SemWireTM Interface
Semtech Corporation	SC623ULTRT	274Kb / 21P	LED Light Management Unit Charge Pump, 4 LEDs, 400mA Flash LED, and SemWireTM Interface
MISUMI Group Inc	SC623ZZ	1Mb / 1P	Stainless Steel Small Deep Groove Ball Bearings

More results

유사한 설명 - SC623AEVB

제조업체	부품명	데이터시트	상세설명
Semtech Corporation	SC621	307Kb / 23P	LED Light Management Unit Charge Pump, 4 LEDs, 400mA Flash LED, Dual LDOs, and SemWireTM Interface
	SC623	274Kb / 21P	LED Light Management Unit Charge Pump, 4 LEDs, 400mA Flash LED, and SemWireTM Interface
	SC627A	380Kb / 24P	LED Light Management Unit Charge Pump, 4 LEDs, 700mA Flash LED, Dual LDOs, and I2C Interface
	SC622	300Kb / 21P	LED Light Management Unit Charge Pump, 400mA Flash LED, Dual LDOs, and SemWireTM Interface
	SC622A	313Kb / 23P	LED Light Management Unit Charge Pump, 400mA Flash LED, Dual LDOs, and I2C Interface
	SC621	314Kb / 23P	LED Light Management Unit Charge Pump,4 LEDs, 400mA Flash LED Dual LDOs,and SemWire Interface
	SC621A	320Kb / 24P	LED Light Management Unit Charge Pump, 4 LEDs, 400mA Flash LED, Dual LDOs, and I2C Interface
	SC622	301Kb / 21P	LED Light Management Unit Charge Pump, 400mA Flash LED, Dual LDOs, and SemWire Interface
	SC622A	308Kb / 23P	LED Light Management Unit Charge Pump, 400mA Flash LED,Dual LDOs,and I2C Interface
	SC627A	321Kb / 24P	LED Light Management Unit Charge Pump, 4 LEDs, 700mA Flash LED,Dual LDOs, and I2C Interface

More results

SC623AEVB 데이터시트(PDF) 1 Page - Semtech Corporation

SC623AEVB 데이터시트(HTML) 1 Page - Semtech Corporation

유사한 부품 번호 - SC623AEVB

유사한 설명 - SC623AEVB

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