TPS61158 - 具有集成电源二极管的 30V WLED 驱动器

TPS61158是TI德州仪器公司的一款背光产品，TPS61158是具有集成电源二极管的 30V WLED 驱动器，本站介绍了TPS61158的封装应用图解、特点和优点、功能等，并给出了与TPS61158相关的TI元器件型号供参考。

TPS61158 - 具有集成电源二极管的 30V WLED 驱动器 - 背光 - LED驱动器 - 德州仪器

产品特性

2.7-V to 5.5-V Input Voltage Range
28-V Open LED Protection (up to 8 LEDs)
Integrated 0.6-A, 30-V Internal Switch FET and Power Diode
750-kHz Switching Frequency
Flexible Digital and PWM Brightness Control
- 1-Wire Control Interface (EasyScale™)
- PWM Dimming Control Interface
Up to 100:1 PWM Dimming Ratio
Integrated Loop Compensation
Built-in Soft Start
Built-in WLED Open protection
Thermal Shutdown

产品应用

Feature Phones
Smart Phones
Portable Media Players
Ultra Mobile Devices
GPS Receivers
Backlight for Small and Media Form Factor LCD Displays

产品说明

With a 30V-rated integrated switch FET and power diode, the TPS61158 is a boost converter that drives LEDs in series. The boost converter runs at 750-kHz fixed switching frequency to reduce output ripple, improve conversion efficiency, and allows for the use of small external components.

The default white LED current is set with the external sensor resistor RFB, and the feedback voltage is regulated to 200 mV, as shown in Typical Application. During the operation, the LED current can be controlled using the 1-wire digital interface (EasyScale™ protocol) through the CTRL pin. Alternatively, a pulse width modulation (PWM) signal can be applied to the CTRL pin through which the duty cycle determines the feedback reference voltage. In either digital or PWM mode, the TPS61158 does not burst the LED current; therefore, it does not generate audible noises on the output capacitor. For maximum protection, the device features integrated open LED protection that disables the TPS61158 to prevent the output voltage from exceeding the device absolute maximum voltage ratings during open LED conditions.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS61158	WSON (6)	2.00 mm x 2.00 mm

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