TPS61160_17 Datasheet, PDF (1/39 Pages) Texas Instruments – White LED Drivers With Digital and PWM Brightness Control in 2-mm x 2-mm WSON Package

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TPS61160, TPS61161
SLVS791E – NOVEMBER 2007 – REVISED JULY 2016
TPS6116x White LED Drivers With Digital and PWM Brightness Control in 2-mm x 2-mm
WSON Package
1 Features
•1 2.7-V to 18-V Input Voltage Range
• 26-V Open LED Protection (TPS61160)
• 38-V Open LED Protection (TPS61161)
• 200-mV Reference Voltage With ±2% Accuracy
• Flexible Digital and PWM Brightness Control
• Built-in Soft Start
• Up to 90% Efficiency
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
TPS61160 and TPS61161 are boost converters that
drive LEDs in series. The boost converters run at
600-kHz fixed switching frequency to reduce output
ripple, improve conversion efficiency, and allow 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 using the one-wire digital interface
(EasyScale™ protocol) through the CTRL pin.
Alternatively, a pulse width modulation (PWM) signal
can be applied to the CTRL pin through which the
duty cycle determines the feedback reference
voltage. In either digital or PWM mode, the
TPS61160 and TPS61161 do not burst the LED
current; therefore, they do not generate audible
noises on the output capacitor. For maximum
protection, the device features integrated open LED
protection that disable the TPS61160 and/or
TPS61161 to prevent the output voltage from
exceeding the device's absolute maximum voltage
ratings during open LED conditions.
The TPS61160 and TPS61161 are available in a
space-saving, 2-mm × 2-mm WSON package with
thermal pad.
PART NUMBER
TPS61160
TPS61161
Device Information⁽¹⁾
PACKAGE
OPEN LED PROTECTION
WSON (6)
TPS61160 use 26 V (typical)
TPS61161 use 38 V (typical)
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
V_I 3 V to 18 V
Typical Application
L1
22 mH
D1
38 V Max
C1
1 mF
ON/OFF
DIMMING
CONTROL
C3
220 nF
TPS61161–Q1
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.