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 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.
Key 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
产品规格
应用手册
手册
解决方案评估工具
| 型号 | 制造商 | Description |
|---|
| STEVAL-TLL012V1 | | 4-channel LED driver with charge pump based on the STP4CMP |
样片和购买
| 型号 | Quantity | Unit Price (US$)
* | Package | Packing Type | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | ECCN (EU) | ECCN (US) | Country of Origin |
|---|
| STP4CMPQTR | 1000 | 1.035 | VFQFPN 20 3.2x1.8x0.5 | Tape And Reel | -40 | 85 | NEC | EAR99 | THAILAND |
质量和可靠性
