LP2992数据手册集成电路（IC）的线性+开关稳压器规格书PDF

描述 Description

The LP2992 is a 250-mA, fixed-output voltage regulator designed to provide ultra-low dropout and low noise in battery-powered applications. Using an optimized vertically integrated PNP (VIP) process, the LP2992 delivers unequaled performance in all specifications critical to battery-powered designs: Dropout voltage: Typically 450 mV at 250-mA load, and 5 mV at 1-mA load. Ground pin current: Typically 1500 µA at 250-mA load, and 75 µA at 1-mA load. Enhanced stability: The LP2992 is stable with output capacitor equivalent series resistance (ESR) as low as 5 mΩ, which allows the use of ceramic capacitors on the output.Sleep mode: Less than 1-µA quiescent current when ON/OFF pin is pulled low. Smallest possible size: SOT-23 and WSON packages use absolute minimum board space. Precision output: 1% tolerance output voltages available (A grade). Low noise: By adding a 10-nF bypass capacitor, output noise can be reduced to 30 µV (typical). Multiple voltage options, from 1.5 V to 5 V, are available as standard products. Consult factory for custom voltages.For all available packages, see the orderable addendum at the end of the data sheet.

特性 Features

• Input Voltage Range: 2.2 V to 16 V
• Output Voltage Range: 1.5 V to 5 V
• Wide Supply Voltage Range (16-V Maximum)
• Output Voltage Accuracy 1% (A Grade)
• Ultra-Low-Dropout Voltage
• Specified 250-mA Output Current
• Stable With Low-ESR Output Capacitor
• OUT: 0.3-Ω Typical (10 Hz to 1 MHz)
• Overtemperature and Overcurrent Protection
• −40°C to +125°C Junction Temperature Range
• Smallest Possible Size (SOT-23, WSON Package)
• Requires Minimum External Components
• Custom Voltages Available