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TC1072 Datasheet(PDF) 1 Page - TelCom Semiconductor, Inc

Part No. TC1072
Description  50mA CMOS LDO WITH SHUTDOWN, ERROR OUTPUT AND VREF BYPASS
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Manufacturer  TELCOM [TelCom Semiconductor, Inc]
Direct Link  http://www.telcom-semi.com
Logo TELCOM - TelCom Semiconductor, Inc

TC1072 Datasheet(HTML) 1 Page - TelCom Semiconductor, Inc

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TC1072
1
PRELIMINARY INFORMATION
TC1072-01
6/16/97
50mA CMOS LDO WITH SHUTDOWN,
ERROR OUTPUT AND VREF BYPASS
TC1072
FEATURES
s
Zero Ground Current for Longer Battery Life!
s
Very Low Dropout Voltage
s
Guaranteed 50mA Output
s
High Output Voltage Accuracy
s
Standard or Custom Output Voltages
s
Power-Saving Shutdown Mode
s
ERROR Ouput can be Used as a Low Battery
Detector, or Processor Reset Generator
s
Bypass Input for Ultra-quiet Operation
s
Over-Current and Over-Temperature Protection
s
Space-Saving SOT-23A-6 Package
s
Pin Compatible Upgrades for Bipolar Regulators
APPLICATIONS
s
Battery Operated Systems
s
Portable Computers
s
Medical Instruments
s
Instrumentation
s
Cellular / GSM / PHS Phones
s
Linear Post-Regulator for SMPS
s
Pagers
GENERAL DESCRIPTION
The TC1072 is a high accuracy (typically
±0.5%) CMOS
upgrade for older (bipolar) low dropout regulators. Designed
specifically for battery-operated systems, the TC1072’s
50mA CMOS LDO WITH SHUTDOWN, ERROR OUTPUT AND VREF BYPASS
TYPICAL APPLICATION
TelCom Semiconductor reserves the right to make changes in the circuitry and specifications ot its devices.
CMOS construction eliminates wasted ground current, sig-
nificantly extending battery life. Total supply current is
typically 50
µA at full load (20 to 60 times lower than in bipolar
regulators!).
TC1072 key features include ultra low noise operation
(plus optional Bypass input); very low dropout voltage (typi-
cally 100mV at full load) and internal feed-forward compen-
sation for fast response to step changes in load. An error
output (ERROR) is asserted when the TC1072 is out-of-
regulation (due to a low input voltage or excessive output
current). ERROR can be used as a low battery warning or as
a processor RESET signal (with the addition of an external
RC network). Supply current is reduced to less than 1
µA,
and both VOUT and ERROR are disabled when the shutdown
input is low. The TC1072 incorporates both over-tempera-
ture and over-current protection.
The TC1072 is stable with an output capacitor of only
1
µF and has a maximum output current of 50mA. For higher
output current versions, please see the TC1107, TC1108
and TC1073 (IOUT = 300mA) data sheets.
1
µF
Shutdown Control
(from Power Control Logic)
TC1072
VIN
1
1M
2
3
4
6
5
VIN
VOUT
ERROR
Bypass
C
BYPASS
470pF
SHDN
GND
VOUT
ERROR
PIN CONFIGURATION
ORDERING INFORMATION
Output
Junction
Part No.
Voltage **(V) Package
Temp. Range
TC1072-2.5VCH
2.5
SOT-23A-6* – 40
°C to +125°C
TC1072-2.7VCH
2.7
SOT-23A-6* – 40
°C to +125°C
TC1072-3.0VCH
3.0
SOT-23A-6* – 40
°C to +125°C
TC1072-3.3VCH
3.3
SOT-23A-6* – 40
°C to +125°C
TC1072-5.0VCH
5.0
SOT-23A-6* – 40
°C to +125°C
NOTE: *SOT-23A-6 is equivalent to the EIAJ (SC-74A)
** Other output voltages available. Please contact TelCom
Semiconductor for details
NOTE: *SOT-23A-6 is equivalent to the EIAJ (SC-74A)
TC1072
(SOT-23A-6*)
TOP VIEW
1
3
5
4
6
2
SHDN
ERROR
GND
VOUT Bypass
VIN


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