SC441D

更新时间： 2024-09-16 12:22:35

品牌	Logo	应用领域
商升特 - SEMTECH		驱动
页数	文件大小	规格书
21页	2011K
描述
High Efficiency Integrated Driver for 4-Strings of 150mA LEDs

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

SC441D 数据手册

SC441D

High Eﬃciency Integrated Driver for

4-Strings of 150mA LEDs

POWER MANAGEMENT

Features

Description

The SC44ꢀD is a high-eﬃciency multiple string WLED driv-

er with an integrated boost converter. It operates over a

wide input range from 4.5V to 27V with a maximum out-

put voltage of 42V and a 3.0A internal power switch. It

can drive up to forty WLEDs in 4 strings with current up

to ꢀ50mA per string. The string-to-string current match-

ing is 2% typical, 3% maximum. The overall eﬃciency is

greater than 90% due to the low current sense voltage

and a low-impedance internal power switch. The wide

PWM dimming range boasts a ratio of 500: ꢀ.

 Wide input voltage range from 4.5V to 27V

 42V maximum output voltage

 Drives up to 40 WLEDs in 4 strings

 Programmable LED current for up to 150mA per

string

 +/- 2% string-to-string current matching

 Up to 90% eﬃciency

 Wide 0.2% to ꢀ00% PWM dimming range

 Possible analog dimming

 Integrated 3.0A power switch

 700KHz switching frequency for small size

 Adjustable OVP for cost-eﬀective output cap selection

 Open/short LED protection

The 700KHz switching frequency enables the user to op-

timize the external component sizes for eﬃciency. When

there are fewer than ꢀ0 LEDs in each string, users can ad-

just the output voltage protection yielding an allowable

reduction in associated costs, size and voltage ratings of

the output capacitor.

 Short LED protection disable

 Thermal protection with auto-recovery

 Thermally enhanced TSSOP-20 EDP package

 Lead-free, Halogen-Free and WeEE/RoHS Compliant

The SC44ꢀD also features comprehensive open and

short-circuit LED protection functions. It disables the cor-

responding strings with LED open or LED short conditions

while maintaining normal operation of other, unaﬀected

LED strings. This feature allows LCD panels to remain view-

able even under LED failure, wire disconnect, or short-cir-

cuit conditions. The internal thermal shutdown protects

the IC from overheating at abnormal conditions.

Applications

 Medium-sized LCD panel

 Notebook Display

 Automotive Car Navigation Display

 Sub-Notebook and Tablet Computer Displays

 Portable Media Players

The SC44ꢀD is available in a thermally-enhanced TSSOP-

20 EDP package.

Typical Application Circuit

Vin (4.5V -27V)

VIN

VOUT

4 Strings

SCP_EN

OVPIN

FFLAG

PWM

SC441D

IO1-4

IO1- 4

COMP

IOSET

AGND

IOGND

PGND

EDP

Revision 2.0

ꢀ

12 3 4 5 6 7...21

中文翻译

下载PDF

与SC441D相关器件

型号	品牌	获取价格	描述	数据表
SC441DEVB	SEMTECH	获取价格	High Efficiency Integrated Driver for 4-Strings of 150mA LEDs
SC441DTETRT	SEMTECH	获取价格	High Efficiency Integrated Driver for 4-Strings of 150mA LEDs
SC442	SEMTECH	获取价格	10-Channel, Integrated, High Efficiency 120 White LED Driver
SC443	SEMTECH	获取价格	High Efficiency Integrated Boost Driver for 3-Strings of 30mA LEDs
SC4431	SEMTECH	获取价格	SHUNT REGULATOR WITH OPEN COLLECTOR OR OUTPUT
SC4431_03	SEMTECH	获取价格	Shunt Regulator With Open Collector Output
SC4431CSK-.5.TRT	SEMTECH	获取价格	Three Terminal Voltage Reference, 1 Output, 1.224V, PDSO5, SOT-23, 5 PIN
SC4431CSK-.5TRT	SEMTECH	获取价格	Voltage Reference, BIPolar, PDSO5,
SC4431CSK-0.5TR	SEMTECH	获取价格	SHUNT REGULATOR WITH OPEN COLLECTOR OR OUTPUT
SC4431CSK-1.TR	SEMTECH	获取价格	Three Terminal Voltage Reference, 1 Output, 1.224V, BIPolar, PDSO5, SOT-23, 5 PIN

与SC441D相关文章

摩尔斯微电子在美国约书亚树国家公园测试 Wi-Fi HaLow
2024-09-18

9
贸泽上架Tallysman TW5386智能GNSS天线
2024-09-18

8
SL74HC10N：高性能三输入与非门解析
2024-09-03

90
AIC1781A 电池充电控制器深度解析
2024-09-03

80

产品中心

服务支持

精选活动

关于我们

帮助中心

SC441D

SC441D 数据手册

与SC441D相关器件

与SC441D相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

SC441D

SC441D 数据手册

与SC441D相关器件

与SC441D相关文章

您还可以找

您在本页遇到什么问题？