LM2925 Datasheet, PDF (1/8 Pages) National Semiconductor (TI) – Low Dropout Regulator with Delayed Reset

Low Dropout Regulator with Delayed Reset
LM2925
FEATURES
● Externally set delay for reset
● 5V/750mA output
● Very low dropout voltage 0.6V at 0.5A
● Reverse battery protection
● 60V load dump protection
● −50V reverse transient protection
● Internal thermal over load protection
● Short circuit protection
● Available in plasticTO-220
● Long delay times available
● P+ Product Enhancementtested
● Moisture Sensitivity Level 3
TO - 220 PKG
1.Vin
2.Vout
3.Gnd
4.Delay
5.Reset
ORDERING INFORMATION
Device
Marking Package
LM2925T
LM2925 TO-220
DESCRIPTION
The LM2925 features a low dropout, high current regulator.
Also included on-chip is a reset function with an externally set delay time. Upon power up, or after the
detection of anyerror in the regulated output, the reset pin remains in the ac-tive low state for the
duration of the delay.
Types of errors de-tected include any that cause the output to become unregu- lated: low input
voltage, thermal shutdown, short circuit,input transients, etc. No external pull-up resistor is neces-sary.
The current charging the delay capacitor is very low, al-lowing long delay times.
Designed primarily for automotive applications, the LM2925 and all regulated circuitry are protected
from reverse battery installations or two-battery jumps.
During line transients, such as a load dump (60V) when the input voltage to the regulator can
momentarily exceed the specified maximum operating voltage, the 0.75A regulator will automatically
shut down to protect both internal circuits and theload.
The LM2925 cannot be harmed by temporary mirror-image inser-tion.
Familiar regulator features such as short circuit and thermal overload protection are also provided.
2008 - Ver 1.0
−1−
HTC