TPS61199 用于 LCD 显示器背光的白光 LED 驱动器 | 德州仪器 TI.com.cn

TPS61199 (正在供货)

用于 LCD 显示器背光的白光 LED 驱动器

用于 LCD 显示器背光的白光 LED 驱动器 - TPS61199
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描述

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.

特性

  • 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™

参数

与其它产品相比 背光LED驱动器 邮件 下载到电子表格中
Part number 立即下单 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 立即下单 8     8     30     8     60     800     Inductive     70     120     Boost     10     95     Series     Adjustable Switch Frequency
Enable/Shutdown
OVP
PWM Control
Thermal Shutdown    
-40 to 85     HTSSOP | 20
SO | 20    
20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)
20SO: 98 mm2: 7.8 x 12.6 (SO | 20)    
LP8860-Q1 立即下单 4     3     48     2     48     2200     Inductive     150     32     Boost Controller     1     92       Adjustable Switch Frequency
Boost Sync
Fault Diagnostic
Hybrid Dimming/Phase Shift
I2C Control
Spread Spectrum    
-40 to 125     HLQFP | 32     32HLQFP: 81 mm2: 9 x 9 (HLQFP | 32)    
LP8861-Q1 立即下单 4     4.5     40     7     40     2200     Inductive     100     32     Boost
Sepic    
4.5     92       Adjustable Switch Frequency
Boost Sync
Fault Detection
Power-Line FET
Sepic Sync
Spread Spectrum
Temperature Compensation    
-40 to 125     HTSSOP | 20     20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)    
TPS61165 立即下单 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)
See datasheet (WSON)    
TPS61196-Q1 立即下单 6     8     30     120     120     800     Inductive     200       Boost     25     92     6 LED channels     Adjustable Switch Frequency     -40 to 125     HTSSOP | 28     28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)