SC624 datasheet(1/22 Pages) SEMTECH

부품명	SC624

상세설명	LED Light Management Unit Charge Pump, 4 LEDs, Dual LDOs,and SemWireTM Interface

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제조업체	SEMTECH [Semtech Corporation]

홈페이지	http://www.semtech.com

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POWER MANAGEMENT

1

SC624

LED Light Management Unit

Charge Pump, 4 LEDs, Dual LDOs,

and SemWireTM 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

Two programmable 200mA low-noise LDO regulators

Charge pump frequency — 250kHz

SemWireTM single wire interface — up to 75kbit/s

Backlight current accuracy ±1.5% typical

Backlight current matching ±0.5% typical

Programmable fade-in/fade-out for main backlight

Automatic sleep mode (LEDs off ) — I

Q

= 100μA

Low shutdown current — 0.1μA (typical)

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

Lead-free and halogen-free

WEEE and RoHS compliant

Applications

Cellular phone backlighting

PDA backlighting

Camera I/O and core power

Description

The SC624 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. 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. The SC624 also

provides two low-dropout, low-noise linear regulators for

powering a camera module or other peripheral circuits.

The SC624 uses the proprietary SemWireTM single wire

interface. The interface controls all functions of the device,

including backlight current and two LDO voltage outputs.

The single wire implementation minimizes microcontroller

and interface pin counts.

In sleep mode, the device reduces quiescent current to

100

μA while continuing to monitor the serial interface.

The two LDOs can be enabled when the device is in sleep

mode. Total current reduces to 0.1μA in shutdown.

SC624

VIN

SWIF

BYP

AGND

PGND

VOUT

BL1

CIN

1μF

MAIN BACKLIGHT

LDO1

GREF

C1+

SemWire

Interface

VLDO1 = 2.5V to 3.3V

VLDO2 = 1.5V to 1.8V

VBAT

CBYP

22nF

COUT

2.2μF

CLDO2

1μF

CLDO1

1μF

C2

1μF

C1

1μF

LDO2

BL2

BL3

BL4

C2+

C1-

C2-

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

Typical Application Circuit

October 20, 2009

유사한 부품 번호 - SC624

제조업체	부품명	데이터시트	상세설명
Semtech Corporation	SC624	288Kb / 22P	LED Light Management Unit Charge Pump, 4 LEDs, Dual LDOs, and SemWireTM Interface
Infinite Electronics In...	SC6247	37Kb / 1P	ALLEN, TX 75013 WWW.FAIRVIEWMICROWAVE.COM .040" SQ REV A
Semtech Corporation	SC624A	295Kb / 23P	LED Light Management Unit Charge Pump, 4 LEDs, Dual LDOs, and I2C Interface
	SC624A	302Kb / 23P	LED Light Management Unit Charge Pump, 4 LEDs, Dual LDOs,and I2C Interface
	SC624AEVB	295Kb / 23P	LED Light Management Unit Charge Pump, 4 LEDs, Dual LDOs, and I2C Interface

More results

유사한 설명 - SC624

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
	SC624	288Kb / 22P	LED Light Management Unit Charge Pump, 4 LEDs, Dual LDOs, and SemWireTM Interface
	SC624A	295Kb / 23P	LED Light Management Unit Charge Pump, 4 LEDs, Dual LDOs, and I2C Interface
	SC627	362Kb / 23P	LED Light Management Unit Charge Pump, 4 LEDs, 700mA Flash LED, Dual LDOs, 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
	SC621	314Kb / 23P	LED Light Management Unit Charge Pump,4 LEDs, 400mA Flash LED Dual LDOs,and SemWire Interface
	SC624A	302Kb / 23P	LED Light Management Unit Charge Pump, 4 LEDs, Dual LDOs,and I2C Interface
	SC627	314Kb / 23P	LED Light Management Unit Charge Pump, 4 LEDs, 700mA Flash LED, Dual LDOs, and SemWireTM Interface

More results

SC624 데이터시트(PDF) 1 Page - Semtech Corporation

SC624 데이터시트(HTML) 1 Page - Semtech Corporation

유사한 부품 번호 - SC624

유사한 설명 - SC624

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