TPS61160A_16 Datasheet, PDF (1/31 Pages) Texas Instruments – TPS6116xA White LED Driver with PWM Brightness Control in 2-mm x 2-mm WSON Package

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TPS61160A, TPS61161A
SLVS937C – MARCH 2009 – REVISED JULY 2016
TPS6116xA White LED Driver with PWM Brightness Control in
2-mm x 2-mm WSON Package
1 Features
•1 Input Voltage Range: 2.7 V to 18 V
• 26-V Open LED Protection for TPS61160A
38-V Open LED Protection for TPS61161A
• 200mV Reference Voltage With ±2% Accuracy
• PWM Interface for Brightness Control
• Built-in Soft Start
• Up to 90% Efficiency
• 2-mm × 2-mm × 0.8-mm 6-Pin WSON Package
With Thermal Pad
2 Applications
• Cellular Phones
• Portable Media Players
• Ultra Mobile Devices
• GPS Receivers
• White LED Backlighting for Media Form Factor
Display
3 Description
With a 40-V rated integrated switch FET, the
TPS61160A/61A is a boost converter that drives
LEDs in series. The boost converter runs at 600-kHz
fixed switching frequency to reduce output ripple,
improve conversion efficiency, and allows for the use
of small external components.
The default white LED current is set with the external
sensor resistor R_set, and the feedback voltage is
regulated to 200 mV, as shown in the typical
application. During the operation, the LED current can
be controlled by a pulse width modulation (PWM)
signal applied to the CTRL pin through which the duty
cycle determines the feedback reference voltage. In
PWM dimming mode, the TPS61160A/61A does not
burst the LED current; therefore, it does not generate
audible noises on the output capacitor. For maximum
protection, the device features integrated open LED
protection that disables the TPS61160A/61A to
prevent the output from exceeding the absolute
maximum ratings during open LED conditions.
The TPS61160A/61A is available in a space-saving,
2-mm × 2-mm WSON package with thermal pad.
Device Information⁽¹⁾
PART NUMBER PACKAGE OPEN LED PROTECTION
TPS61160A
TPS61161A
TPS61160A use 26 V (typical)
WSON (6)
TPS61161A use 38 V (typical)
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application of TPS61161A
V_I 3 V to 18 V
L1
22 mH
D1
38V MAX
C1
1 mF
ON/OFF
DIMMING
CONTROL
C3
220 nF
TPS61161A
VIN SW
CTRL FB
COMP GND
C2
1 mF
R_set
10 W
L1: TDK VLCF5020T-220MR75-1
C1: Murata GRM188R61E105K
C2: Murata GRM21BR71H105K
D1: ONsemi MBR0540T1
20 mA
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.