TPS61163 Texas instruments

TPS61163

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TPS61163

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Описание

The TPS61163 is a dual-channel WLED driver that provides highly integrated solutions for single-cell Li-ion battery-powered smartphone backlights. The device has a built-in high-efficiency boost regulator with integrated 1.5-A, 40-V power MOSFET and supports a voltage as low as 2.7 V. With two high current-matching-capability current-sink regulators, the device can drive up to 10s2p WLED diodes. The boost output can automatically adjust to the WLED forward voltage and allows very low voltage-headroom control, thus effectively improving the efficiency of the LED strings. The TPS61163 supports both a PWM dimming interface and a one-wire digital EasyScale™ dimming interface, either which can achieve 9-bit dimming control. The TPS61163 integrates built-in soft start, overvoltage and overcurrent protection, and thermal shutdown protections.

2.7-V to 6.5-V Input Voltage
Integrated 1.5-A, 40-V MOSFET
1.2-MHz Switching Frequency
Dual Current Sinks of up to 30 mA Current Each
1% Typical Current Matching and Accuracy
37.5-V Overvoltage Protection (OVP) Threshold
Adaptive Boost Output to WLED Voltages
Very Low Voltage Headroom Control (90 mV)
Flexible Digital and PWM Brightness Control
One-Wire Control Interface (EasyScale™)
PWM Dimming Control Interface
Up to 100:1 PWM Dimming Ratio
Up to 10-bit Dimming Resolution
Up to 90% Efficiency
Overvoltage Protection
Built-in Soft Start
Built-in WLED Open and Short Protection
Thermal Shutdown
Supports 4.7-µH Inductor Application

Number of channels	2
Vin (min) (V)	2.7
Vin (max) (V)	6.5
Vout (min) (V)	2.7
Vout (max) (V)	37.5
Type	Inductive
Switching frequency (max) (kHz)	1200
Duty cycle (max) (%)	99.5
LED current per channel (mA)	30
Peak efficiency (%)	90
Topology	Boost
Features	Enable/Shutdown, OVP, PWM control, Soft Start, Thermal shutdown
Operating temperature range (°C)	-40 to 150
Rating	Catalog