STLD41
STLD41 is White LED driver manufactured by STMicroelectronics.
atures
- Boost DC-DC converter
- Drives up to 40 LEDs (4 strings of 10) with a total current up to 120 m A
- Input voltage range: 3.0 V to 21 V
- Output current control
- 1.4 MHz fixed frequency PWM control
- PWM input for output current dimming with frequency range 25 k Hz
- 50 k Hz
- 2 A integrated switch
- Overvoltage protection
- Chip overtemperature detection and protection
- Less than 1 µA standby current
- Soft-start function
- Package DFN8 (3 x 3) 0.65 mm pitch
DFN8 (3 x 3 mm) signal connected to the EN pin. The LEDs can be dimmed by applying a PWM signal to the PWM pin.
Applications
- Mini PCs
- PMP & PND
- Printers
- Game consoles
Description
The STLD41 is a boost converter that operates from 3.0 V to 21 V and can provide an output voltage as high as 38 V. It can drive up to 40 white LEDs connected in 4 strings of 10 LEDs in series. The total output current capability is 120 m A at an output voltage of 38 V. Regulation is performed by the internal error amplifier which works with the feedback voltage from the sensing resistor. The device can be turned ON/OFF by way of the logic
Table 1. Device summary
Order code
Package
STLD41PUR
DFN8 (3 x 3 mm)
Packaging 3000 parts per reel
June 2012
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