TPS61042 - 采用 QFN-8 封装的 30V 500mA 开关升压转换器，用于白光 LED 应用领域

TPS61042是TI德州仪器公司的一款背光产品，TPS61042是采用 QFN-8 封装的 30V 500mA 开关升压转换器，用于白光 LED 应用领域，本站介绍了TPS61042的封装应用图解、特点和优点、功能等，并给出了与TPS61042相关的TI元器件型号供参考。

TPS61042 - 采用 QFN-8 封装的 30V 500mA 开关升压转换器，用于白光 LED 应用领域 - 背光 - LED驱动器 - 德州仪器

产品特性

Current Source With Overvoltage Protection
Input Voltage Range: 1.8 V to 6 V
Internal 30 V Switch
Up to 85% Efficiency
Precise Brightness Control Using PWM Signal or Analog Signal
Switching Frequency: Up to 1 MHz
Internal Power MOSFET Switch: 500 mA
Operates With Small Output Capacitors Down to 100 nF
Disconnects LEDs During Shutdown
No Load Quiescent Current: 38 µA Typ
Shutdown Current: 0.1 µA Typ
Available in a Small 3 mm × 3 mm QFN Package

产品应用

White LED Supply for Backlight/Sidelight Displays
- PDA, Pocket PC, Smart Phones
- Handheld Devices
- Cellular Phones

产品说明

The TPS61042 is a high frequency boost converter with constant current output that drives white LEDs or similar. The LED current is set with the external sense resistor (RS) and is directly regulated by the feedback pin (FB) that regulates the voltage across the sense resistor RS to 252 mV (typ). To control LED brightness, the LED current can be pulsed by applying a PWM (pulse width modulated) signal with a frequency range of 100 Hz to 50 kHz to the control pin (CTRL). To allow higher flexibility, the device can be configured where the brightness can be controlled by an analog signal as well, as described in the application information section. To avoid possible leakage currents through the LEDs during shutdown, the control pin (CTRL) disables the device and disconnects the LEDs from ground. For maximum safety during operation, the output has integrated overvoltage protection that prevents damage to the device in case of a high impedance output (e.g. faulty LED).

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS61042	SON (8)	3.00 mm × 3.00 mm

下面可能是您感兴趣的TI德州仪器公司背光元器件

TI公司产品现货专家，订购TI公司产品不限最低起订量，TI芯片大陆现货即时发货，香港库存3-5天发货，海外库存7-10天发货

寻找全球TI代理商现货货源 - TI公司（德州仪器）电子元件在线订购