STLD41 datasheet(1/19 Pages) STMICROELECTRONICS

部件名	STLD41

功能描述	White LED driver for mid-size LCD display backlight

PDF	19 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

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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