TK11250MTL TOKO, TK11250MTL Datasheet - Page 19

• Manufacturer Part Number: TK11250MTL
• Description: VOLTAGE REGULATOR WITH ON/OFF SWITCH
• Manufacturer: TOKO

APPLICATION INFORMATION
1.) Disabling the control pin
Connect control terminal to V
Higher resistance values are good for reducing quiescent
current but this can cause the regulator to shut down at
lower input voltages. See Figure A.
2.) Using the control function
Turn on the regulator by setting the control pin voltage to
2.4 V or higher. Turn off the regulator by pulling the control
pin below 0.6 V. The regulator can also be controlled
directly from a TTL or CMOS device. See Figure B.
3.) Microprocessor/Logic Control
The Input and Control current in the off mode are less than
200 pA.
January, 1996 TOKO, Inc.
V
IN
V
IN
1 µF
0
Microprocessor
+
R
1
µF
300 k
+
R
R
+
Cont
V IN
6
1
Figure A
Figure B
6
1
5
2
112XX
5
2
IN
4
3
through a resistor (R).
4
3
C
P
GND
C
= 10 nF
V O
P
= 10 nF
+
+
10 µF
+
10 µF
V
O
V
O
1-3-96
4.) Parallel connection for ON/OFF control
To reduce IC power dissipation, connect a resistor, R
series with V
will prevent thermal shutdown due to excessive power
dissipation.
5.) Constant current load
When there is a large ouput current, the quiescent current
also increases, and the difference becomes larger. When
using the ON/OFF control, the terminal voltage should be
set 2.4 V higher than the GND terminal of the IC. When the
ON/OFF control is not being used, connect it to V
ON/OFF
On/Off
0.1 µF
0.1 µF
V
IN
+
+
IN
+
for the lower output voltage devices. This
R S
Cont
Cont
Cont
V
V
V
IN
IN
IN
V IN
Cont
112XX
11250
11230
11220
GND
V O
GND
GND
GND
V
V
V
O
O
O
+
+
+
+
TK112xx
R
+
IN
Page 19
.
5 V
3 V
2 V
S
, in