TPS61169 TPS61169 38-V High-Current Boost WLED Driver | TI.com

TPS61169
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
TPS61169 38-V High-Current Boost WLED Driver

 

Recommended alternative parts

  • TPS61161  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   Single Channel backlight with simple interface
  • TPS61165  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   1.5A current limit WLED driver in QFN

Description

With a 40-V rated integrated switch FET, the TPS61169 is a boost converter that drives LEDs in series. The boost converter has a 40-V, 1.8-A internal MOSFET with minimum 1.2-A current limit; thus it can drive single or parallel LED strings for small- to large-size panel backlighting. The default white LED current is set with the external sensor resistor, RSET, and the feedback voltage is regulated to 204 mV, as shown in the . During the operation, the LED current can be controlled by using a pulse width modulation (PWM) signal applied to the CTRL pin, through which the duty cycle determines the feedback reference voltage. The TPS61169 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 TPS61169 to prevent the output voltage from exceeding the absolute maximum voltage ratings of the device during open LED conditions.

The TPS61169 is available in a space-saving 5-pin SC70 package.

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

Features

  • 2.7-V to 5.5-V Input Voltage
  • Integrated 40-V, 1.8-A MOSFET
  • Drives LED String up to 38 V
  • 1.2-A Minimum Switch Current Limit
  • 1.2-MHz Switching Frequency
  • 204-mV Reference Voltage
  • Internal Compensation
  • PWM Brightness Control
  • Open LED Protection
  • Undervoltage Protection
  • Built-in Soft-Start
  • Thermal Shutdown
  • Up to 90% Efficiency

Parametrics

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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)
TPS61169 Order now 1     2.7     5.5     2.7     38     1500     Inductive     400     27     Boost     1     90     Parallel
Series    
Backlight Driver     OVP
PWM Control    
-40 to 85     SC70 | 5     5SC70: 4 mm2: 2.1 x 2 (SC70 | 5)    
LM3697 Order now 3     2.7     5.5     0     40     1100     Inductive     30     30     Boost     1     91     Parallel     Backlighting, LED driver     I2C Control
OVP
PWM Control    
-40 to 125     DSBGA | 12     See datasheet (DSBGA)    
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     6WSON: 4 mm2: 2 x 2 (WSON | 6)    
TPS61165 Order now 1     3     18     3     38     1200     Inductive     400     27     Boost     1     90     Parallel
Series    
  EasyScale 1-Wire Interface
Load Disconnect During Shutdown    
-40 to 85     SOT-23 | 6
WSON | 6    
6SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 6)
6WSON: 4 mm2: 2 x 2 (WSON | 6)