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TPS61160 Datasheet(PDF) 1 Page - Texas Instruments

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Part No. TPS61160
Description  White LED Driver With Digital and PWM Brightness Control in 2mm x 2mm QFN Package for up to 10 LEDs in Series
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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TPS61160 Datasheet(HTML) 1 Page - Texas Instruments

 
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1
FEATURES
DESCRIPTION
APPLICATIONS
C1
D1
VIN
SW
FB
GND
CTRL
COMP
C2
20mA
TPS61161
ON/OFF
DIMMING
CONTROL
V 3Vto18V
I
L1
22
H
m
1
F
m
C3
220nF
R
10
set
W
1
F
m
L1: TDKVLCF5020T-220MR75-1
C1:MurataGRM188R61E105K
C2: MurataGRM21BR71H105K
D1:ONsemiMBR0540T1
TPS61160
TPS61161
SLVS791 – NOVEMBER 2007
www.ti.com
White LED Driver With Digital and PWM Brightness Control in 2mm x 2mm
QFN Package for up to 10 LEDs in Series
• 2.7V to 18V Input Voltage Range
• 26V Open LED Protection for 6 LEDs
With a 40-V rated integrated switch FET, the
TPS61160/1 is a boost converter that drives up to 10
(TPS61160)
LEDs in series. The boost converter runs at 600kHz
38V Open LED Protection for 10 LEDs
fixed switching frequency to reduce output ripple,
(TPS61161)
improve conversion efficiency, and allows for the use
• 200mV Reference Voltage With ±2% Accuracy
of small 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
regulated
to
200mV,
as
shown
in
the
typical
• Up to 90% Efficiency
application. During the operation, the LED current can
• 2mm × 2mm × 0.8mm 6-pin QFN Package With
be controlled using the 1 wire digital interface
Thermal Pad
(Easyscale™
protocol)
through
the
CTRL
pin.
Alternatively, a pulse width modulation (PWM) signal
can be applied to the CTRL pin through which the
• Cellular Phones
duty
cycle
determines
the
feedback
reference
voltage.
In
either
digital
or
PWM
mode,
the
• Portable Media Players
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 from exceeding
the absolute maximum 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.
PRODUCTION DATA information is current as of publication date.
Copyright © 2007, 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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