- 制造厂商:TI
- 产品类别:电源管理
- 技术类目:LED 驱动器 - 背光 LED 驱动器
- 功能描述:采用 QFN-8 封装、适用于白光 LED 应用的 30V 500mA 开关升压转换器
- 点击这里打开及下载TPS61042的技术文档资料
- TI代理渠道,提供当日发货、严格的质量标准,满足您的目标价格
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).
- 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
- Number of channels (#)
- 1
- Vin (Min) (V)
- 1.8
- Vin (Max) (V)
- 6
- Vout (Min) (V)
- 1.8
- Vout (Max) (V)
- 28
- Type
- Inductive
- Switching frequency (Max) (kHz)
- 1000
- LED current per channel (mA)
- 50
- Peak efficiency (%)
- 85
- Topology
- Boost
- Features
- Load Disconnect During Shutdown
- Operating temperature range (C)
- -40 to 85
TPS61042的完整型号有:TPS61042DRBR、TPS61042DRBT,以下是这些产品的关键参数及官网采购报价:
TPS61042DRBR,工作温度:-40 to 85,封装:SON (DRB)-8,包装数量MPQ:3000个,MSL 等级/回流焊峰值温度:Level-2-260C-1 YEAR,引脚镀层/焊球材料:NIPDAU,TI官网TPS61042DRBR的批量USD价格:.42(1000+)
TPS61042DRBT,工作温度:PropertyValue,封装:SON (DRB)-8,包装数量MPQ:250个,MSL 等级/回流焊峰值温度:Level-2-260C-1 YEAR,引脚镀层/焊球材料:NIPDAU,TI官网TPS61042DRBT的批量USD价格:.504(1000+)
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