L4987CPT30中文资料意法半导体数据手册PDF规格书

DESCRIPTION

The L4987 is a very low drop regulator available in PPAK. The very low drop-voltage (0.5V Max at 200 mA) and the very low quiescent current make it particularly suitable for low noise, low power applications, and in battey powered systems. The input dump protection up to 40V makes it ideal for automotive applications. a shutdown Logic Control function is available (pin2, TTL compatible). This means that when the device is used as a local regulator, it is possible to put a part of the boad in standby, decreasing the total power consumption.

■ VERY LOW DROPOUT VOLTAGE (0.25V TYP.)

■ DROPOUT CONTROL FLAG

■ VERY LOW QUIESCENT CURRENT (TYP. 90 µA IN OFF MODE, 500µA IN ON MODE)

■ OUTPUT CURRENT UP TO 200 mA

■ LOGIC-CONTROLLEDELECTRONIC SHUTDOWN

■ OUTPUT VOLTAGESOF 3V, 5V 8.7V 12V

■ INTERNAL CURRENT AND THERMAL LIMIT

■ ONLY 2.2µF FOR STABILITY

■ AVAILABLEIN ± 2 SELECTION AT 25 oC

■ SUPPLY VOLTAGE REJECTION: 70 dB (TYP.)