LP38852中文资料具有使能功能的 1.5A、低输入电压 (0.93V)、可调节超低压降稳压器数据手册TI规格书

描述 Description

The LP38852-ADJ 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 ultralow 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. 130 mV (typical) at 1.5-A load current.10 mA (typical) at 1.5-A load current.Programmable soft-start time. For all available packages, see the orderable addendum at the end of the data sheet.

特性 Features

• Input VIN Range 0.93 V to 5.5 V
• Wide VBIAS Supply Operating Range 3 V to 5.5 V
• Precision Output Voltage Across All Line and Load Conditions:
• ±2% VADJ for 0°C ≤ TJ ≤ +125°C
• Overtemperature and Overcurrent Protection
• Available in 7-pin TO-220, 7-Pin DDPAK/TO-263, and 8-Pin SO PowerPAD Packages
• −40°C to +125°C Operating Junction Temperature Range