TPS61199 White LED Driver for LCD Monitors Backlighting | TI.com

TPS61199 (ACTIVE)

White LED Driver for LCD Monitors Backlighting

 

Description

The TPS61199 provides highly integrated solutions for large size LCD backlighting. This device integrates a current-mode boost controller and eight current sinks for driving up to eight LED strings with multiple LEDs in series. Each string has an independent current regulator with current matching between strings reaching 3% regulation accuracy. The device automatically adjusts the output voltage of the boost converter to provide only the voltage required by the LED string with the largest forward voltage drop plus the minimum required voltage at the IFBx pin of that string, thereby optimizing efficiency of the driver.

The TPS61199 provides PWM brightness dimming with an external PWM signal. The signal of the PWM maximum frequency can be as high as 22 kHz. Dimming ratios up to 5000:1 can be achieved with a 200-Hz PWM signal. The TPS61199 integrates overcurrent protection for the switch FET, soft start-up, LED short protection, LED open protection, and overtemperature shutdown protection. The TPS61199 device is available in 20-pin SO and HTSSOP packages.

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

Features

  • 8-V to 30-V Input Voltage
  • Integrated High-Power Boost Controller
  • Adaptive Boost Output for LED Voltages
  • Drive up to Eight LED Strings in Parallel
  • Maximum 70 mA for Each LED String
  • 3% Current Matching Between Strings
  • 5000:1 PWM Dimming Ratio at 200 Hz
  • MOSFET Overcurrent Protection
  • Programmable LED Short Protection
  • Adjustable LED Open Protection
  • Thermal Shutdown Protection
  • 20-Pin SO Package and TSSOP Package
    With PowerPAD™

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Parametrics Compare all products in Backlight LED drivers

 
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
Features
Operating temperature range (C)
Package Group
Package size: mm2:W x L (PKG)
TPS61199 LP8860-Q1 LP8861-Q1 TPS61165 TPS61196-Q1
8     4     4     1     6    
8     3     4.5     3     8    
30     48     40     18     30    
8     2     7     3     120    
60     48     40     38     120    
800     2200     2200     1200     800    
Inductive     Inductive     Inductive     Inductive     Inductive    
70     150     100     400     200    
120     32     32     27      
Boost     Boost Controller     Boost
Sepic    
Boost     Boost    
10     1     4.5     1     25    
95     92     92     90     92    
Series         Parallel
Series    
6 LED channels    
Adjustable Switch Frequency
Enable/Shutdown
OVP
PWM Control
Thermal Shutdown    
Adjustable Switch Frequency
Boost Sync
Fault Diagnostic
Hybrid Dimming/Phase Shift
I2C Control
Spread Spectrum    
Adjustable Switch Frequency
Boost Sync
Fault Detection
Power-Line FET
Sepic Sync
Spread Spectrum
Temperature Compensation    
EasyScale 1-Wire Interface
Load Disconnect During Shutdown    
Adjustable Switch Frequency    
-40 to 85     -40 to 125     -40 to 125     -40 to 85     -40 to 125    
HTSSOP | 20
SO | 20    
HLQFP | 32     HTSSOP | 20     SOT-23 | 6
WSON | 6    
HTSSOP | 28    
20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)
20SO: 98 mm2: 7.8 x 12.6 (SO | 20)    
32HLQFP: 81 mm2: 9 x 9 (HLQFP | 32)     20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)     6SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 6)
See datasheet (WSON)    
28HTSSOP: 62 mm2: 6.4 x 9.7 (HTSSOP | 28)