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TPS61199PWPR
White LED Driver for LCD Monitors Backlighting
0.03Ω R2190kΩ
10kΩSi4480DYHµ
0.47nF
200Ω
SS5P10
10kΩTPS61199
VDD
IFB1
GDRV
IFB2
GND
ISNS
VIN
IFB4
OVP
ISET FSW
FBP
COMP
IFB3
IFB7
IFB8
10kΩ
OUT 60V12V IN10µF
2.2Fµ
OUT40.2kΩ200kΩ
160kΩ
50kΩ
47nF
3 X 33µF
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TPS61199SLVSAN3B –DECEMBER 2010–REVISED NOVEMBER 2016
TPS61199 White-LED Driver for LCD Monitor Backlighting Features 8-Vto 30-V Input Voltage Integrated High-Power Boost Controller Adaptive Boost Output for LED Voltages Driveupto Eight LED Stringsin Parallel Maximum70 mA for Each LED String 3% Current Matching Between Strings 5000:1 PWM Dimming Ratioat 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™
Applications Monitor LCD Backlight LCD TV Backlight General LED Lighting
DescriptionThe TPS61199 provides highly integrated solutions
for large size LCD backlighting. This device integrates current-mode boost controller and eight current
sinks for driving upto 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 voltageof the boost
converterto provide only the voltage requiredby the
LED string with the largest forward voltage drop plus
the minimum required voltageat the IFBx pinof that
string, thereby optimizing efficiencyof the driver.
The TPS61199 provides PWM brightness dimming
with an external PWM signal. The signalof the PWM
maximum frequency can be as high as 22 kHz.
Dimming ratios upto 5000:1 can be achieved witha
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.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Typical Application
