TPS61161 White LED Driver with Digital and PWM Brightness Control in 2mm x 2mm WSON Package | TI.com

TPS61161 (ACTIVE) White LED Driver with Digital and PWM Brightness Control in 2mm x 2mm WSON Package

 

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 RSET, and the feedback voltage is regulated to 200 mV, as shown in the . 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.

For all available packages, see the orderable addendum at the end of the data sheet.

Features

  • 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

Parametrics

Compare all products in Backlight LED drivers Email Download to Excel
Part number Order Channels (#) Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Switching frequency (Max) (kHz) Type LED current per channel (mA) LED (#) Topology Shutdown current (Typ) (uA) Peak efficiency (%) LED configuration Function Features Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
TPS61161 Order now 1     2.7     18     2.7     38     600     Inductive     20     10     Boost     1     90     Series       EasyScale 1-Wire Interface
Load Disconnect During Shutdown    
-40 to 85     WSON | 6     See datasheet (WSON)    
LM36272 Order now 2     2.7     5     27     30     1050     Inductive     30     16     Boost
Current Sink    
1.2     92     Parallel
Series    
  Adjustable Switch Frequency
CABC
Direct PWM Dimming
I2C Control
OVP
Thermal Shutdown    
-40 to 85     DSBGA | 24     See datasheet (DSBGA)    
LM36273 Order now 3     2.7     5     27     30     1050     Inductive     30     24     Boost
Current Sink    
1.2     92     Parallel
Series    
  Adjustable Switch Frequency
CABC
Direct PWM Dimming
I2C Control
OVP
Thermal Shutdown    
-40 to 85     DSBGA | 24     See datasheet (DSBGA)    
LM3630A Order now 2     2.3     5.5     12     40     1120     Inductive     28.5     20     Boost     1     87     Dual       I2C Control
OVP
PWM Control
Soft Start
Thermal Shutdown    
-40 to 85     DSBGA | 12     See datasheet (DSBGA)    
LM3631 Order now 2     2.7     5.0