TK116xxU
THREE-TERMINAL VOLTAGE REGULATOR
FEATURES
s
Low Dropout Voltage
s
Very Low Standby Current (No Load)
s
Good Load Regulation
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Internal Thermal Shutdown
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Short Circuit Protection
s
3% Output Voltage Accuracy
s
Customized Versions Are Available
APPLICATIONS
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Battery Powered Systems
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Portable Consumer Equipment
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Cordless Telephones
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Personal Communications Equipment
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Portable Instrumentation
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Radio Control Systems
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Toys
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Low Voltage Systems
DESCRIPTION
The TK116xxU series devices are low dropout, linear 3-
terminal regulators.
An internal PNP pass-transistor is used in order to achieve
low dropout voltage (typically 160 mV at 80 mA load
current).
The regulated output voltages of 3, 3.3, 5 and 9 V are
available. The device has very low (400
µA)
quiescent
current with no load and 2 mA with 60 mA load.
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 TK116xxU is available in the SOT-89 surface mount
package.
BLOCK DIAGRAM
TK116xxU
VIN
GND
GND
VOUT
ORDERING INFORMATION
VIN
VOUT
TK116
Voltage Code
U
Tape/Reel Code
THERMAL
PROTECTION
VOLTAGE CODE
30 = 3.0 V
33 = 3.3 V
50 = 5.0 V
90 = 9.0 V
TAPE/REEL CODE
TL: Tape Left
BANDGAP
REFERENCE
GND
January 1999 TOKO, Inc.
Page 1
TOKO [ TOKO, INC ]
