TK114XX Datasheet, PDF (1/24 Pages) TOKO, Inc – VOLTAGE REGULATOR WITH ON/OFF SWITCH

TK114xx
VOLTAGE REGULATOR WITH ON/OFF SWITCH
FEATURES
s Low Dropout Voltage
s Electronic ON/OFF Switch
s Very Low Standby Current (ON, No Load)
s Internal Thermal Shutdown
s Short Circuit Protection
s Very Low (<100 nA) Current in OFF Mode
s Customized Versions Are Available
DESCRIPTION
The TK114xx is a low power, linear regulator with a built-
in electronic switch. The internal electronic switch can be
controlled by an external pull-up resistor and an open drain
or open collector transistor. The device is in the OFF state
when the control pin is biased from V_IN through the pull-up
resistor.
An internal PNP pass-transistor is used in order to achieve
low dropout voltage (typically 200 mV at 50 mA load
current). The device has very low quiescent current (500
µA) in the ON mode with no load and 2 mA with 30 mA load.
The quiescent current is typically 4 mA at 60 mA load. An
internal thermal shutdown circuit limits the junction tem-
perature to below 150 °C. The load current is internally
monitored and the device will shut down (no load current)
in the presence of a short circuit at the output. The device
is available in a small SOT-23L surface mount package.
APPLICATIONS
s Battery Powered Systems
s Cellular Telephones
s Pagers
s Personal Communications Equipment
s Portable Instrumentation
s Portable Consumer Equipment
s Radio Control Systems
s Toys
s Low Voltage Systems
R3
TK114xxM
CONTROL 1
2
GND 3
6 V_IN
5
4 V_O
KT114xxM.PO
BLOCK DIAGRAM
ORDERING INFORMATION
TK114
Tape/Reel Code
Voltage Code
VOLTAGE CODE
30 = 3.0 V
32 = 3.25 V
35 = 3.5 V
37 = 3.75 V
40 = 4.0 V
45 = 4.5 V
47 = 4.75 V
50 = 5.0 V
55 = 5.5 V
57 = 5.75 V
60 = 6.0 V
80 = 8.0 V
TAPE/REEL CODE
BX : Bulk/Bag
TL : Tape Left
V_IN 1
HIGH
CONTROL 2
(HC)
S
SS
THERMAL
S
PROTECTION
S
–
S
+
S
S
S
S
LOW
CONTROL 3 ^S
(LC)
TK114xx
BANDGAP
REFERENCE
S
S ₈ V_O
+
S
S 6 _GND
KT114xx • BD
January, 1995 TOKO, Inc.
11-20-94
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