TPS61150A - Dual Output Boost WLED Driver Using Single Inductor

TPS61150A是TI德州仪器公司的一款背光产品，TPS61150A是Dual Output Boost WLED Driver Using Single Inductor，本站介绍了TPS61150A的封装应用图解、特点和优点、功能等，并给出了与TPS61150A相关的TI元器件型号供参考。

TPS61150A - Dual Output Boost WLED Driver Using Single Inductor - 背光 - LED驱动器 - 德州仪器

产品描述

The TPS61150A is a high frequency boost converter with two regulated current outputs for driving WLEDs. Each current output can be individually programmed through external resistors. There is dedicated selection pin for each output, so the two outputs can be turned on separately or simultaneously. The output current can be reduced by a pulse width modulation (PWM) signal on the select pins or an analog voltage on the ISET pin. The boost regulator runs at 1.2MHz fixed switching frequency to reduce output ripple and avoid audible noises associated with PFM control.

The two current outputs are ideal for driving WLED backlight for the sub and main displays in clam shell phones. The two outputs can also be used for driving display and keypad backlights. When used together, the two outputs can drive up to 14 WLED for one large display.

In addition to the small inductor, small capacitor and 3mm x 3mm QFN package, the built-in MOSFET and diode eliminate the need for any external power devices. Overall, the IC provides an extremely compact solution with high efficiency and plenty of flexibility.

产品特性

2.5V to 6V Input Voltage Range
0.7A Integrated Switch
Built-in Power Diode
1.2MHz Fixed PWM Frequency
Individually Programmable Output Current
Input-to-Output Isolation
Built-in Soft Start
27V Overvoltage Protection
3% at 15mA Matching between Two Current Strings, Improvement from TPS61150/1
Up to 83% Efficiency
Up to 30kHz PWM Dimming Frequency
Availiable in a 10 Pin, 3 × 3 mm QFN Package
APPLICATIONS
- Up to 14 WLED Driver for Media Form Factor Display
- Sub and Main Display Backlight in Clam Shell Phones
- Display and Keypad Backlight in Portable Equipment

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