stld41pur STMicroelectronics, stld41pur Datasheet
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stld41pur
Manufacturer Part Number
stld41pur
Description
White Led Driver For Mid-size Lcd Display Backlight
Manufacturer
STMicroelectronics
Datasheet
1.STLD41PUR.pdf
(19 pages)
Features
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Applications
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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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