LP2951 Datasheet, PDF (6/10 Pages) Semtech Corporation – 150mA ADJUSTABLE VOLTAGE REGULATOR

LP2951
Typical Application
ERROR
SHUTDOWN
V IN
8
V IN
5 _{ERROR VOUT} 1
KAL7P82R9L5O1 OD
3
SD
GND
FB
4
7
V OUT
Co
R1
1 µF
VREF
R2
VO = V_REF (1+ R₁/ R₂)+I_FB R₁
CO is required between the output and ground for stability at output voltages
of 5V or more. since IFB is controlled to less than 40nA, the error associated
with this term is negligible in most applications.
At lower output voltage, more capacitance is required. without this capacitance
the part will oscillate.
6