LP38859 - 具有软启动的 3A 快速响应高分辨率 LDO 线性稳压器

LP38859是TI德州仪器公司的一款单通道LDO产品，LP38859是具有软启动的 3A 快速响应高分辨率 LDO 线性稳压器，本站介绍了LP38859的封装应用图解、特点和优点、功能等，并给出了与LP38859相关的TI元器件型号供参考。

LP38859 - 具有软启动的 3A 快速响应高分辨率 LDO 线性稳压器 - 单通道LDO - 线性稳压器(LDO) - 德州仪器

产品特性

Input Voltage: 1.1 V to 5.5 V
Wide VBIAS Supply Operating Range: 3 V to 5.5 V
Standard VOUT Values: 0.8 V and 1.2 V
Stable With 10-µF Ceramic Capacitors
Dropout Voltage of 240 mV (typical) at 3-A Load Current
Programmable Soft-Start Time
Precision Output Voltage Across All Line and Load Conditions:
- ±1% VOUT for TJ = 25°C
- ±2% VOUT for 0°C ≤ TJ ≤ +125°C
- ±3% VOUT for –40°C ≤ TJ ≤ +125°C
Overtemperature and Overcurrent Protection
Operating Temperature Range: −40°C to +125°C

产品应用

ASIC Power Supplies In:
- Desktops, Notebooks, Graphics Cards, and Servers
- Gaming Set Top Boxes, Printers, and Copiers
Server Core and I/O Supplies
DSP and FPGA Power Supplies
SMPS Post-Regulator

产品说明

The LP38859 is a high-current, fast-response regulator which can maintain output voltage regulation with extremely low input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: VBIAS provides voltage to drive the gate of the N-MOS power transistor, while VIN is the input voltage which 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 LP38859 is available in 5-pin TO-220 and DDPAK/TO-263 packages.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LP38859	DDPAK/TO-263 (5)	10.16 mm × 8.42 mm
LP38859	TO-220 (5)	14.986 mm × 10.16 mm

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