LP38855
- Standard VOUT Values of 0.8V and 1.2V
- Wide VBIAS Supply Operating Range of 3.0V to 5.5V
- Stable with 10 µF Ceramic Capacitors
- Dropout Voltage of 130 mV (Typical) at 1.5A Load Current
- Precision Output Voltage Across All Line and Load Conditions:
- ±1.0% for TJ = 25°C
- ±2.0% for 0°C ≤ TJ ≤ +125°C
- ±3.0% for -40°C ≤ TJ ≤ +125°C
- Over-Temperature and Over-Current Protection
- Available in 5 Lead TO-220 and DDPAK/TO-263 Packages
- Custom VOUT Values between 0.8V and 1.2V are Available
- -40°C to +125°C Operating Temperature Range
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The LP38855 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 LP38855 is available in TO-220 and DDPAK/TO-263 5-Lead packages.
Dropout Voltage: 130 mV (typical) at 1.5A load current.
Low Ground Pin Current: 10 mA (typical) at 1.5A load current.
Shutdown Current: 1 µA (typical) IIN(GND) when EN pin is low.
Precision Output Voltage: ±1.0% for TJ = 25°C and ±2.0% for 0°C ≤ TJ ≤ +125°C, across all line and load conditions
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | LP38855 1.5A Fast-Response High-Accuracy LDO Linear Regulator with Enable 数据表 (Rev. D) | 2013年 4月 5日 | |||
选择指南 | 电源管理指南 2018 (Rev. K) | 2018年 7月 31日 | ||||
选择指南 | 电源管理指南 2018 (Rev. R) | 2018年 6月 25日 |
设计和开发
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封装 | 引脚 | CAD 符号、封装和 3D 模型 |
---|---|---|
TO-220 (NDH) | 5 | Ultra Librarian |
TO-263 (KTT) | 5 | Ultra Librarian |
订购和质量
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
- 制造厂地点
- 封装厂地点
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