This datasheet provides the production data for the STMicroelectronics STLD41 white LED driver. The driver can be used to drive up to 40 white LEDs (4 strings of 10 LEDs), with a maximum output current of 120 mA. The input voltage range is 3.0 V to 21 V.
The STLD41 is a boost DC-DC converter designed to power and control the current of white LEDs in LCD backlight applications. It operates with an input voltage range of 3.0 V to 21 V and can provide an output voltage up to 38 V. The device is capable of driving up to 40 LEDs connected in 4 strings of 10 LEDs in series, with a total output current capability of 120 mA.
| Input voltage range | 3.0 V to 21 V |
|---|---|
| Maximum output current | 120 mA |
| Switching frequency | 1.4 MHz |
| PWM dimming frequency range | 25 kHz - 50 kHz |
| Integrated switch current | 2 A |
| Operating ambient temperature | -40 to 85 °C |
| Package type | DFN8 (3 x 3) |
The device can drive up to 40 LEDs connected in 4 strings of 10 LEDs in series.
It is recommended to use a PWM signal with a frequency between 25 kHz and 50 kHz.