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STLD41 Datasheet(PDF) 1 Page - STMicroelectronics |
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STLD41 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 19 page  This is information on a product in full production. June 2012 Doc ID 022283 Rev 5 1/19 19 STLD41 White LED driver for mid-size LCD display backlight Datasheet − production data Features ■ Boost DC-DC converter ■ Drives up to 40 LEDs (4 strings of 10) with a total current up to 120 mA ■ 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 kHz - 50 kHz ■ 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 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 mA 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 signal connected to the EN pin. The LEDs can be dimmed by applying a PWM signal to the PWM pin. DFN8 (3 x 3 mm) Table 1. Device summary Order code Package Packaging STLD41PUR DFN8 (3 x 3 mm) 3000 parts per reel www.st.com |
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