- 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：具有高压升压转换器的照明管理单元
- 点击这里打开及下载LP3958的技术文档资料
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LP3958 is a Lighting Management Unit for portable applications. It is used to drive display backlight and keypad LEDs. The device can drive 5 separately connected strings of LEDs with high voltage boost converter.
The keypad LED driver allows driving LEDs from high voltage boost converter or separate supply voltage.The MAIN and SUB outputs are high resolution current mode drivers. Keypad LED outputs can be used in switch mode and current mode. External PWM control can be used for any selected outputs.
The device is controlled through 2-wire low voltage I2C compatible interface that reduces the number of required connections.
LP3958 is offered in a tiny 25-bump DSBGA package.
- High-Efficiency Boost Converter With Programmable Output Voltage
- Two Individual Drivers for Serial Display Backlight LEDs
- Three Drivers for Serial Keypad LEDs
- Automatic Dimming Controller
- Stand Alone Serial Leypad LEDs Controller
- Three General-Purpose IO Pins
- 25-Bump DSBGA Package: 2.54mm x 2.54mm x 0.6mm
All trademarks are the property of their respective owners.
- Number of channels (#)
- 5
- Vin (Min) (V)
- 3
- Vin (Max) (V)
- 5.5
- Vout (Min) (V)
- 8
- Vout (Max) (V)
- 18
- Type
- Inductive
- Switching frequency (Max) (kHz)
- 1000
- LED current per channel (mA)
- 25
- Peak efficiency (%)
- 90
- Topology
- Boost
- Features
- I2C Control
- Operating temperature range (C)
- -30 to 85
LP3958的完整型号有：LP3958TL/NOPB，以下是这些产品的关键参数及官网采购报价：
LP3958TL/NOPB，工作温度：-30 to 85，封装：DSBGA (YZR)-25，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LP3958TL/NOPB的批量USD价格：1.598（1000+）
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