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TC1072-2.7VCH Datasheet(PDF) 7 Page - TelCom Semiconductor, Inc

No. de pieza TC1072-2.7VCH
Descripción Electrónicos  50mA CMOS LDO WITH SHUTDOWN, ERROR OUTPUT AND VREF BYPASS
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Fabricante Electrónico  TELCOM [TelCom Semiconductor, Inc]
Página de inicio  http://www.telcom-semi.com
Logo TELCOM - TelCom Semiconductor, Inc

TC1072-2.7VCH Datasheet(HTML) 7 Page - TelCom Semiconductor, Inc

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TC1073
1
PRELIMINARY INFORMATION
TC1073-01 6/5/97
100mA CMOS LDO WITH SHUTDOWN,
ERROR OUTPUT AND VREF BYPASS
GENERAL DESCRIPTION
The TC1073 is a high accuracy (typically
±0.5%) CMOS
upgrade for older (bipolar) low dropout regulators such as
the LP2980. Designed specifically for battery-operated sys-
tems, the TC1073’s CMOS construction eliminates wasted
ground current, significantly extending battery life. Total
supply current is typically 50
µA at full load (20 to 60 times
lower than in bipolar regulators!).
TC1073 key features include ultra low noise operation
(plus optional Bypass input); very low dropout voltage (typi-
cally 200mV 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 TC1073 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 TC1073 incorporates both over-tempera-
ture and over-temeprature protection.
The TC1073 is stable with an output capacitor of only
1
µF and has a maximum output current of 100mA. For
higher output current versions, please see the TC1107,
TC1108 (IOUT = 300mA) data sheets.
TC1073
FEATURES
s
Zero Ground Current for Longer Battery Life!
s
Very Low Dropout Voltage
s
Guaranteed 100mA 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
100mA 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.
1
µF
Shutdown Control
(from Power Control Logic)
TC1073
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**
Package
Temp. Range
TC1073-2.5VCH
2.5V
SOT-23A-6* – 40
°C to +125°C
TC1073-2.7VCH
2.7V
SOT-23A-6* – 40
°C to +125°C
TC1073-3.0VCH
3.0V
SOT-23A-6* – 40
°C to +125°C
TC1073-3.3VCH
3.3V
SOT-23A-6* – 40
°C to +125°C
TC1073-5.0VCH
5.0V
SOT-23A-6* – 40
°C to +125°C
NOTE:
*SOT-23A-6 is equivalent to the EIAJ (SC-74)
** Other output voltages available. Please contact TelCom
Semiconductor for details
NOTE: *SOT-23A-6 is equivalent to the EIAJ (SC-74)
TC1073
(SOT-23A-6*)
TOP VIEW
1
3
5
4
6
2
SHDN
ERROR
GND
VOUT Bypass
VIN


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