- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：LED 驱动器 - 照明 LED 驱动器
- 功能描述：高功率开关电容器电压转换器/LED 闪光灯驱动器
- 点击这里打开及下载LM2753的技术文档资料
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The LM2753 is capable of driving a flash LED with a pulsed current of 400 mA at an input voltage of 3.6 V. A switched-capacitor doubler, the LM2753 provides a regulated 5-V output (VOUT) over an input supply range of 3 V to 5.5 V. The switched output, IOUT, takes less than 10 ns to turn on and provide maximum current to a flash LED. Flash LED current is set via a ballast resistor. Continuous illumination current (torch mode) is programmed by connecting a resistor between IOUT and VOUT. This device uses only three small, low-cost ceramic capacitors.
The LM2753 device uses pulse frequency modulation (PFM) regulation. Typical operating frequency is 725 kHz. Under no-load conditions, the LM2753 operates on only 60 µA. If the output is connected to ground, the charge pump stays in the gain of 1, which helps limit the input current to 300 mA (typical).
For all available packages, see the orderable addendum at the end of the data sheet.- Input Voltage Range: 3 V to 5.5 V
- Regulated 5-V Output
- 250-mA Output Current With a 3.6-V Input
- 400-mA Pulsed Output Current (up to 500-ms Duration)
- 60-μA (Typical) Quiescent Current
- Pulse-Frequency Modulation (PFM) Regulation
- Inductor-Less Solution: Requires Only Three Small Capacitors
- < 1-μA Typical Shutdown Current
- 10-pin WSON Package (No Pullback):
- 3 mm × 3 mm × 0.8 mm
- Input voltage (type)
- Linear
- Topology
- Charge pump
- Vin (Min) (V)
- 3
- Vin (Max) (V)
- 5.5
- Iout (Max) (A)
- 0.4
- Iq (Typ) (mA)
- 0.06
- Features
- Enable
- Operating temperature range (C)
- -40 to 85
LM2753的完整型号有：LM2753SD/NOPB、LM2753SDX/NOPB，以下是这些产品的关键参数及官网采购报价：
LM2753SD/NOPB，工作温度：-40 to 85，封装：WSON (DSC)-10，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM2753SD/NOPB的批量USD价格：.803（1000+）
LM2753SDX/NOPB，工作温度：-40 to 85，封装：WSON (DSC)-10，包装数量MPQ：4500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM2753SDX/NOPB的批量USD价格：.669（1000+）
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