SC620EVB

更新时间： 2024-09-17 03:33:23

品牌	Logo	应用领域
商升特 - SEMTECH		驱动器
页数	文件大小	规格书
16页	357K
描述
Octal LED Driver, General Purpose Current Sink with Serial Interface

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SC620EVB 数据手册

SC620

Octal LED Driver, General Purpose

Current Sink with Serial Interface

POWER MANAGEMENT

Features

Description

The SC620 is a multi-purpose LED driver with eight identi-

cal, independently controlled current sinks. Each current

sink can drive an LED by connecting the LED’s anode to

the system power supply and the cathode to the current

sink input pin. Any combination of outputs can be enabled

or disabled for optimal design ﬂexibility.

ꢀ Eight identical current drivers with independent

control

ꢀ Wide current setting range - 31.25μA to 25mA

ꢀ 3% current matching, 5% accuracy

ꢀ I²C interface for microprocessor control

ꢀ I²C slave address 1110 000x

ꢀ Less than 1μA quiescent current in shutdown

ꢀ Low dropout voltage: ≤ 150mV

ꢀ Over-temperature protection

ꢀ MLPQ-UT-16 package (3mm x 3mm)

ꢀ Ultra-thin 0.6mm maximum package height

ꢀ Fully WEEE and RoHS compliant

In addition to the individual current settings, the SC620

employs an adjustable global current gain setting register

to allow the current setting step size to vary from 31.25μA

to 500μA, giving the designer a wide range of options for

LED variation and dimming functions. The maximum output

is also scaled by this step size, with a maximum of 25mA

at the highest step setting.

Applications

ꢀ LCD backlighting LED driver

ꢀ Multicolor and RGB LED driver

ꢀ General purpose current sink array

ꢀ General purpose digital output (open-drain) expander

ꢀ Auto-focus voice-coil driver

Multi-colored and white LEDs with different forward volt-

ages can be driven using the same SC620 due to its ﬂoating

cathode technology. This feature allows each output pin to

vary in voltage from 150mV to V_IN- 1.5V.

All current control is done via an I²C interface bus. Only a

single input bypass capacitor is required - no other exter-

nal resistors or capacitors are needed. The 3mm x 3mm

MLPQ package and minimal support components make

the SC620 an ideal solution for low-cost, area-conscious

backlighting designs.

Typical Application Circuit

LED Backlighting

Main Panel

Sub Panel

Color/R/G/B LEDs

1μF

Battery

SC620

VIN

ILED1

ILED2

ILED3

ILED4

ILED5

ILED6

SCL

SDA

SCL

SDA

GND

ED7

ILED8

www.semtech.com

January 16, 2007

12 3 4 5 6 7...16

中文翻译

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与SC620EVB相关器件

型号	品牌	获取价格	描述	数据表
SC620ULTRT	SEMTECH	获取价格	Octal LED Driver, General Purpose Current Sink with Serial Interface
SC621	SEMTECH	获取价格	LED Light Management Unit Charge Pump, 4 LEDs, 400mA Flash LED, Dual LDOs, and SemWireTM I
SC621_09	SEMTECH	获取价格	LED Light Management Unit Charge Pump,4 LEDs, 400mA Flash LED Dual LDOs,and SemWire Interf
SC621A	SEMTECH	获取价格	Charge Pump, 4 LEDs, 400mA Flash LED, Dual LDOs, and I2C Interface
SC621A_09	SEMTECH	获取价格	LED Light Management Unit Charge Pump, 4 LEDs, 400mA Flash LED, Dual LDOs, and I2C Interfa
SC621AEVB	SEMTECH	获取价格	Charge Pump, 4 LEDs, 400mA Flash LED, Dual LDOs, and I2C Interface
SC621AULTRT	SEMTECH	获取价格	Charge Pump, 4 LEDs, 400mA Flash LED, Dual LDOs, and I2C Interface
SC621EVB	SEMTECH	获取价格	LED Light Management Unit Charge Pump, 4 LEDs, 400mA Flash LED, Dual LDOs, and SemWireTM I
SC621ULTRT	SEMTECH	获取价格	LED Light Management Unit Charge Pump, 4 LEDs, 400mA Flash LED, Dual LDOs, and SemWireTM I
SC622	SEMTECH	获取价格	LED Light Management Unit Charge Pump, 400mA Flash LED, Dual LDOs, and SemWireTM Interface

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