Datasheet Texas Instruments LP2957ISX/NOPB — 数据表

LP2957, LP2957A
www.ti.com SNVS102C – JUNE 1998 – REVISED APRIL 2013 LP2957/LP2957A 5V Low-Dropout Regulator for µP Applications
Check for Samples: LP2957, LP2957A FEATURES DESCRIPTION The LP2957 is a 5V micropower voltage regulator
with electronic shutdown, error flag, very low
quiescent current (150 ВµA typical at 1 mA load), and
very low dropout voltage (470 mV typical at 250 mA
load current). 1 2 5V Output within 1.4% Over Temperature (A
Grade)
Easily Programmed for Snap-On/Snap-Off
Output
Ensured 250 mA Output Current
Extremely Low Quiescent Current
Low Input-Output Voltage Required for
Regulation
Reverse Battery Protection
Extremely Tight Line and Load Regulation
Very Low Temperature Coefficient
Current and Thermal Limiting
Error Flag Signals when Output is out of
Regulation APPLICATIONS High-Efficiency Linear Regulator
Battery-Powered Regulator Output can be wired for snap-on/snap-off operation to
eliminate transition voltage states where ВµP operation
may be unpredictable. …