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TPS61163AYFFR
Dual-Channel WLED Drivers For Smart Phone 9-DSBGA -40 to 85
TPS61162A/3A
VIN
PWM
ISET
4.7μH
IFB1
IFB2
1μF
1μF
PWM
Dimming
63.4k
VBAT
2.7V ~ 6.5V
COMPEnable /
Disable
330nF
1μF
10
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TPS61162A, TPS61163ASLVSC26A –NOVEMBER 2013–REVISED JUNE 2015
TPS6116xA Dual-Channel WLED Drivers For Smart Phones Features 3 DescriptionThe TPS61162A and TPS61163A are dual-channel 2.7-Vto 6.5-V Input Voltage WLED drivers which provide highly integrated• Integrated 1.5-A/40-V MOSFET solutions for single-cell Li-ion battery powered smart• 1.2-MHz Switching Frequency phone backlight. The devices havea built-in high
efficiency boost regulator with integrated 1.5-A, 40-V• Dual Current Sinksofupto 30-mA Current Each power MOSFET and support as low as 2.7-V input• 1% Typical Current Matching and Accuracy voltage. With two high current-matching capability• Optional 26.5-V/ 37.5-V OVP Threshold current sink regulators, the devices can drive upto
10s2p WLED diodes. The boost output can– TPS61162A: 26.5-V OVP
automatically adjustto the WLED forward voltage and– TPS61163A: 37.5-V OVP allow very low voltage headroom control, thus to• Adaptive Boost Outputto WLED Voltages improve LED strings efficiency effectively. Very Low Voltage Headroom Control (90 mV) The TPS61162A and TPS61163A support both the• Flexible Digital and PWM Brightness Control PWM dimming interface and one-wire digital One-Wire Control Interface (EasyScale™) EasyScale™ dimming interface and can realize 9-bit
brightness code programming.• PWM Dimming Control Interface
The TPS61162A and TPS61163A integrate built-in• Upto 100:1 PWM Dimming Ratio
soft start, as well as overvoltage, overcurrent, and• Upto 9-Bit Dimming Resolution thermal shutdown protections.• Upto 90% Efficiency Built-in Soft Start
Device Information(1)• PFM Modeat Light Load• Overvoltage Protection• Built-in WLED Open/Short Protection
(1) Forall available packages, see the orderable addendumat• Thermal Shutdown the endofthe data sheet.• Supports 4.7-µH Inductor Application
Simplified Schematic2 Applications Smart Phones PDAs, Handheld Computers GPS Receivers Backlight for Small and Media Form-Factor LCD
Display with Single-Cell Battery Input
