stld41pur STMicroelectronics, stld41pur Datasheet

stld41pur

Manufacturer Part Number

stld41pur

Description

White Led Driver For Mid-size Lcd Display Backlight

Manufacturer

STMicroelectronics

Datasheet

1.STLD41PUR.pdf (19 pages)

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Features

■

Applications

■

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

Table 1.

November 2011

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to

change without notice.

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

Mini PCs

PMP & PND

Printers

Game consoles

STLD41PUR

Order code

Device summary

White LED driver for mid-size LCD display backlight

Doc ID 022283 Rev 2

DFN8 (3 x 3 mm)

Package

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)

3000 parts per reel

Packaging

STLD41

Preliminary data

www.st.com

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