- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：线性和低压降 (LDO) 稳压器
- 功能描述：具有使能功能的 3A、低输入电压 (1.15V)、高精度、超低压降稳压器
- 点击这里打开及下载LP38856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 LP38856 is a high-current, fast-response regulator which can maintain output voltage regulation with an extremely low input-to-output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: VBIAS provides power for the internal bias and control circuits, as well as drive for the gate of the N-MOS power transistor, while VIN supplies power to the load. The use of an external bias rail allows the part to operate from ultra-low VIN voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an N-MOS power transistor results in wide bandwidth, yet minimum external capacitance is required to maintain loop stability.
The fast transient response of this device makes it suitable for use in powering DSP, microcontroller core voltages, and switch mode power supply post regulators. The LP38856 is available in 5-pin TO-220 and DDPAK/TO-263 packages.
- Dropout Voltage: 240 mV (typical) at 3-A load current.
- Low Ground Pin Current: 10 mA (typical) at 3-A load current.
- Shutdown Current: 1 µA (typical) IIN(GND) when EN pin is low.
- Precision Output Voltage: ±1% for TJ = 25°C and ±2% for 0°C ≤ TJ ≤ +125°C, across all line and load conditions.
- Input Voltage: 1.1 V to 5.5 V
- Wide VBIAS Supply Operating Range: 3 V to 5.5 V
- Standard VOUT: 0.8 V and 1.2 V
- Stable with 10-μF Ceramic Capacitors
- Dropout Voltage of 240 mV (Typical) at 3-A Load Current
- Precision Output Voltage Across All Line and Load Conditions:
- ±1% for TJ = 25°C
- ±2% for 0°C ≤ TJ ≤ +125°C
- ±3% for –40°C ≤ TJ ≤ +125°C
- Overtemperature and Overcurrent Protection
- –40°C to +125°C Operating Temperature Range
- Output options
- Fixed Output
- Iout (Max) (A)
- 3
- Vin (Max) (V)
- 5.5
- Vin (Min) (V)
- 1.15
- Vout (Max) (V)
- 1.2
- Vout (Min) (V)
- 0.8
- Fixed output options (V)
- 0.8, 1.2
- Noise (uVrms)
- 150
- Iq (Typ) (mA)
- 10
- Thermal resistance θJA (°C/W)
- 32
- Rating
- Catalog
- Load capacitance (Min) (μF)
- 10
- Regulated outputs (#)
- 1
- Features
- Enable
- Accuracy (%)
- 1
- PSRR @ 100 KHz (dB)
- 37
- Dropout voltage (Vdo) (Typ) (mV)
- 240
- Operating temperature range (C)
- -40 to 125
LP38856的完整型号有：LP38856S-1.2/NOPB、LP38856SX-1.2/NOPB、LP38856T-1.2/NOPB，以下是这些产品的关键参数及官网采购报价：
LP38856S-1.2/NOPB，工作温度：-40 to 125，封装：DDPAK/TO-263 (KTT)-5，包装数量MPQ：45个，MSL 等级/回流焊峰值温度：Level-3-245C-168 HR，引脚镀层/焊球材料：SN，TI官网LP38856S-1.2/NOPB的批量USD价格：2.112（1000+）
LP38856SX-1.2/NOPB，工作温度：-40 to 125，封装：DDPAK/TO-263 (KTT)-5，包装数量MPQ：500个，MSL 等级/回流焊峰值温度：Level-3-245C-168 HR，引脚镀层/焊球材料：SN，TI官网LP38856SX-1.2/NOPB的批量USD价格：1.76（1000+）
LP38856T-1.2/NOPB，工作温度：-40 to 125，封装：TO-220 (NDH)-5，包装数量MPQ：45个，MSL 等级/回流焊峰值温度：Level-1-NA-UNLIM，引脚镀层/焊球材料：SN，TI官网LP38856T-1.2/NOPB的批量USD价格：1.76（1000+）
LP38856S-1.2/NOPB，工作温度：-40 to 125，封装：DDPAK/TO-263 (KTT)-5，包装数量MPQ：45个，MSL 等级/回流焊峰值温度：Level-3-245C-168 HR，引脚镀层/焊球材料：SN，TI官网LP38856S-1.2/NOPB的批量USD价格：2.112（1000+）
LP38856SX-1.2/NOPB，工作温度：-40 to 125，封装：DDPAK/TO-263 (KTT)-5，包装数量MPQ：500个，MSL 等级/回流焊峰值温度：Level-3-245C-168 HR，引脚镀层/焊球材料：SN，TI官网LP38856SX-1.2/NOPB的批量USD价格：1.76（1000+）
LP38856T-1.2/NOPB，工作温度：-40 to 125，封装：TO-220 (NDH)-5，包装数量MPQ：45个，MSL 等级/回流焊峰值温度：Level-1-NA-UNLIM，引脚镀层/焊球材料：SN，TI官网LP38856T-1.2/NOPB的批量USD价格：1.76（1000+）
