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TPS61160DRVR Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce TPS61160DRVR
Description  White LED Driver With Digital and PWM Brightness Control in 2mm x 2mm QFN Package
Download  27 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS61160DRVR Fiches technique(HTML) 1 Page - Texas Instruments

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C1
D1
VIN
SW
FB
GND
CTRL
COMP
C2
20 mA
TPS61161
ON/OFF
DIMMING
CONTROL
38 V Max
L1
22
H
m
1
F
m
C3
220 nF
R
10
set
W
1
F
m
L1: TDK VLCF5020T-220MR75-1
C1: Murata GRM188R61E105K
C2: Murata GRM21BR71H105K
D1: ONsemi MBR0540T1
V 3 V to 18 V
I
TPS61160
TPS61161
www.ti.com
SLVS791C – NOVEMBER 2007 – REVISED APRIL 2012
White LED Driver With Digital and PWM Brightness Control in 2mm x 2mm
QFN Package
Check for Samples: TPS61160, TPS61161
1
FEATURES
DESCRIPTION
With a 40-V rated integrated switch FET, the
2
2.7V to 18V Input Voltage Range
TPS61160/1 is a boost converter that drives LEDs in
26V Open LED Protection (TPS61160)
series. The boost converter runs at 600kHz fixed
38V Open LED Protection (TPS61161)
switching frequency to reduce output ripple, improve
conversion efficiency, and allows for the use of small
200mV Reference Voltage With ±2% Accuracy
external components.
Flexible Digital and PWM Brightness Control
The default white LED current is set with the external
Built-in Soft Start
sensor resistor Rset, and the feedback voltage is
Up to 90% Efficiency
regulated
to
200mV,
as
shown
in
the
typical
2mm × 2mm × 0.8mm 6-pin QFN Package With
application. During the operation, the LED current can
Thermal Pad
be
controlled
using
the
1-wire
digital
interface
( Easyscale™ protocol) through the CTRL pin.
Alternatively, a pulse width modulation (PWM) signal
APPLICATIONS
can be applied to the CTRL pin through which the
Cellular Phones
duty
cycle
determines
the
feedback
reference
Portable Media Players
voltage.
In
either
digital
or
PWM
mode,
the
TPS61160/1
does
not
burst
the
LED
current;
Ultra Mobile Devices
therefore, it does not generate audible noises on the
GPS Receivers
output capacitor. For maximum protection, the device
White LED Backlighting for Media Form Factor
features integrated open LED protection that disables
Display
the TPS61160/1 to prevent the output voltage from
exceeding the IC's absolute maximum voltage ratings
during open LED conditions.
The TPS61160/1 is available in a space-saving,
2mm × 2mm QFN package with thermal pad.
Figure 1. Typical Application of TPS61161
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
Easyscale is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2007–2012, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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