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STP4CMP PDF预览

STP4CMP

更新时间: 2024-11-24 14:58:03
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 驱动驱动器
页数 文件大小 规格书
24页 1175K
描述
具有电荷泵的低压4通道恒定电流LED驱动器

STP4CMP 数据手册

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STP4CMP  
Low voltage 4-channel constant current  
LED driver with charge pump  
Datasheet - production data  
Description  
The STP4CMP is a charge-pump-based 4-  
channel LED driver designed for RGB  
illumination or LCD display backlighting. The  
STP4CMP works off a battery with an input  
voltage between 2.7 V and 5.5 V. The device  
generates regulated current sinks with high  
absolute and channel-to-channel accuracy to  
drive up to 4 LEDs. It can support LEDs with  
forward voltage as high as 3.8 V. The current  
sink for each channel can be set with 4 individual  
external resistors. Each channel is controlled  
independently. The PWM control can be applied  
directly to the 4 EN (enable) pins to provide  
brightness control. When enabled, the charge  
pump, which uses a small ceramic bucket  
capacitor between C1P and C1N, operates to  
regulate the VOUT with a clamping voltage at typ.  
5 V. The tiny QFN20 (1.8x3.2 mm) package  
allows the device to be also used for applications  
with space limitations.  
QFN20 (1.8x3.2 mm)  
Features  
Operating voltage range: VCC 2.7 V to 5.5 V  
Full RGB function support  
4-channel LED driver with individual  
ON/OFF control directly from input pins  
Individually programmable output current for  
the 4 channels through 4 external resistors  
with a max. capability of 30 mA  
Absolute output current accuracy of max.  
±7% and channel-to-channel mismatch of  
max. ±4%  
Selectable charge pump enable/disable  
Thermal protection  
Small QFN20 (1.8x3.2 mm) package  
Table 1: Device summary  
Oder code  
Package  
Packing  
Applications  
QFN20  
(1.8x3.2 mm)  
STP4CMPQTR  
Tape and reel  
Mobile phone display backlighting  
RGB LED indicator driver  
April 2015  
DocID15770 Rev 3  
1/24  
www.st.com  
This is information on a product in full production.  
 

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