TK11220A TOKO [TOKO, Inc], TK11220A Datasheet - Page 32

• Manufacturer Part Number: TK11220A
• Description: VOLTAGE REGULATOR WITH ON/OFF SWITCH
• Manufacturer: TOKO [TOKO, Inc]

TK112xx A
DEFINITION AND EXPLANATION OF TECHNICAL TERMS (CONT.)
capacitors are now available from several manufacturers.
Usually a bench test is sufficient to determine the minimum
capacitance required for a particular application. After
taking thermal characteristics and tolerance into account,
the minimum capacitance value should be approximately
two times this value. The recommended minimum capaci-
tance for the TK112xxA is 2.2 F. Please note that linear
regulators with a low dropout voltage have high internal
loop gains which requires care in guarding against oscilla-
tion caused by insufficient decoupling capacitance. The
use of high quality decoupling capacitors suited for your
application will guarantee proper operation of the circuit.
NOISE BYPASS CAPACITOR SECTION
The noise bypass capacitor (C
) should be connected as
P
close as possible to pin 3 and ground. The recommended
value for C
is 0.01 F. The noise bypass terminal has a
P
high impedance and care should be taken if the noise
bypass capacitor is not used. This terminal is susceptible
to external noise and oscillation can occur when C
is not
P
used and the solder pad for this pin is made too large.
1-4-96
Page 32
January, 1996 TOKO, Inc.