STP4CMP Low voltage 4-channel constant current LED driver with charge pump
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 - 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 VOUTwith a clamping voltage at typ. 5 V. The tiny QFN20 (1.8 x 3.2 mm) package allows the device to be also used for applications with space limitation
技术特性
- Operating voltage range: VCC(opr) = 2.7 V to 5.5 V
- Full RGB function support
- 4-channel LED driver with individual ON/OFF control directly from input pins
- Individual 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 (1.8 x 3.2 mm) package
| 功能框图
 |
STP4CMP 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| STP4CMPQTR |
Active |
|
1000 |
VFQFPN 20 3.2x1.8x0.5 |
Tape And Reel |
-40 °C-85 °C |
STP4CMPQTR |
DATASHEET
| 描述 |
版本 |
大小 |
| STP4CMP : DS6299: Low voltage 4-channel constant current LED driver with charge pump |
2 |
856KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN2841: LED dimming implemented on STM32™ microcontroller |
1 |
783KB |
| AN3981: LED array drivers |
1 |
3554KB |
USER MANUALS
| 描述 |
版本 |
大小 |
| UM0574: STEVAL-ILL015V1 - LED dimmer demonstration board based on the STP4CMP and STM32™ |
1 |
662KB |
| UM0588: Multilayer C library for LED dimming used on systems with SPI and DMA capabilities |
1 |
224KB |
PRODUCT PRESENTATIONS
