The STCS44 is a dedicated and space optimized solution for controlling the current of high power white LEDs in camera phones, PDAs and other hand-held devices.
It is capable of controlling the current of 4 independent white LEDs with a maximum current of 2.5 A each using linear control. However at 10 A of total current, the power dissipation reaches very high values. Therefore, the operation of the device must be limited to a short period of time.
This makes the device specifically suitable for flash light applications. Continuous current control can be maintained if the power dissipation limit is not exceeded.
The operation is based on closed loop architecture capable of comparing the voltage of a sensing resistor to an external voltage reference.
This ensures good current regulation over the forward voltage spread characteristics of the flash LEDs.
It includes several functions to protect the chip and the power LEDs. These include chip overtemperature detection and protection, shorted LEDs detection and protection.
The STCS44 is optimized and designed as a companion chip for the STCF04 device, which is a high current SuperCap flash led driver. The STCS44, together with STCF04, creates a highpower flash LED function with minimal application area.
The device is packaged in a 3 x 3 mm QFN package with 1 mm height
| 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 |
| STCS44PQR | Active | 1000 | VFQFPN 16 3x3x0.9 | Tape And Reel | STCS44PQR |
