TK115XX Datasheet, PDF (1/26 Pages) TOKO, Inc – VOLTAGE REGULATOR WITH ON/OFF SWITCH

TK115xx
VOLTAGE REGULATOR WITH ON/OFF SWITCH
FEATURES
s Low Dropout Voltage
s Pass Transistor Terminals Available
s Very Low Standby Current ( ON, No Load)
s Very Low (<200 nA) Current in OFF Mode
s Low Output Noise
s Internal Thermal Shutdown
s Short Circuit Protection
s Available on Tape and Reel
APPLICATIONS
s Cordless Telephones
s Pagers
s Battery Powered Systems
s Personal Communications Equipment
s Portable Instrumentation
s Radio Control Systems
s Toys
s Low Voltage Systems
s Portable Consumer Equipment
DESCRIPTION
The TK115xx series devices are low power, linear regu-
lators with electronic ON/OFF switches. Both active HIGH
and active LOW control pins are provided.
An internal PNP pass-transistor is used in order to achieve
low dropout voltage (typically 200 mV at 80 mA load
current). A base drive is available at pin 7 for connection
of an external pass transistor should higher current (up to
1 A) or lower dropout voltage is required.
An internal thermal shutdown circuit limits the junction
temperature to below 150 °C. The load current is internally
monitored, and the device will shut down in the presence of
a short circuit at the output.
The TK115xx series is available in plastic surface mount
SOP-8 packages.
TK115xxM
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ......................................................... 16 V
Load Current ....................................................... 180 mA
Power Dissipation (Note 1) ................................ 600 mW
Storage Temperature Range ................... -55 to +150 °C
Operating Temperature Range .................. -30 to +80 °C
Lead Soldering Temp. (10 sec.) ........................... 260 °C
Junction Temperature .......................................... 150 °C
Note 1: Derate output power by 4.8 mW/°C for operation
above 25 °C.
5XAX21
V_IN 1
HIGH CONTROL 2
LOW CONTROL 3
NC 4
8 V_O
7 BASE
6 GND
5 V_ADJ
KT115xxM • PO
BLOCK DIAGRAM
ORDERING INFORMATION
TK115 M
Voltage Code
Tape/Reel Code
VOLTAGE CODE
30 = 3.0 V 45 = 4.5 V
32 = 3.25 V 47 = 4.75 V
35 = 3.5 V 50 = 5.0 V
37 = 3.75 V 55 = 5.5 V
40 = 4.0 V 80 = 8.0 V
February, 1995 TOKO, Inc.
TAPE/REEL CODE
BX : Bulk/Bag
TL : Tape Left
MG: Magazine
V _IN 1
HIGH
CONTROL
(HC)
2
S
S
S
S
THERMAL S
PROTECTION
S
S
S
–
S
+
S
LOW
CONTROL
3
(LC)
S
TK115xx
REFERENCE
VOLTAGE
S
10-15-94
S _{8 VO}
7 BASE
+
S ₅ VADJ
S 6 _GND
KT115xx • BD01
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