TPS61162A - 用于智能手机的双通道白光发光二级管 (WLED) 驱动器 ..

TPS61162A是TI德州仪器公司的一款背光产品，TPS61162A是用于智能手机的双通道白光发光二级管 (WLED) 驱动器 ..，本站介绍了TPS61162A的封装应用图解、特点和优点、功能等，并给出了与TPS61162A相关的TI元器件型号供参考。

TPS61162A - 用于智能手机的双通道白光发光二级管 (WLED) 驱动器 .. - 背光 - LED驱动器 - 德州仪器

产品特性

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
Optional 26.5-V / 37.5-V OVP Threshold
- TPS61162A: 26.5-V OVP
- TPS61163A: 37.5-V OVP
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 9-Bit Dimming Resolution
Up to 90% Efficiency
Built-in Soft Start
PFM Mode at Light Load
Overvoltage Protection
Built-in WLED Open/Short Protection
Thermal Shutdown
Supports 4.7-µH Inductor Application

产品应用

Smart Phones
PDAs, Handheld Computers
GPS Receivers
Backlight for Small and Media Form-Factor LCD Display with Single-Cell Battery Input

产品说明

The TPS61162A and TPS61163A are dual-channel WLED drivers which provide highly integrated solutions for single-cell Li-ion battery powered smart phone backlight. The devices have a built-in high efficiency boost regulator with integrated 1.5-A, 40-V power MOSFET and support as low as 2.7-V input voltage. With two high current-matching capability current sink regulators, the devices can drive up to 10s2p WLED diodes. The boost output can automatically adjust to the WLED forward voltage and allow very low voltage headroom control, thus to improve LED strings efficiency effectively.

The TPS61162A and TPS61163A support both the PWM dimming interface and one-wire digital EasyScale™ dimming interface and can realize 9-bit brightness code programming.

The TPS61162A and TPS61163A integrate built-in soft start, as well as overvoltage, overcurrent, and thermal shutdown protections.

产品器件信息

PART NUMBER	PACKAGE	OPEN LED PROTECTION
TPS61162A	DSBGA (9)	TPS61162A use 26.5 V (typical)
TPS61163A	DSBGA (9)	TPS61162A use 37.5 V (typical)

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