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TC1072-5.0VCH Datasheet

  • TC1072-5.0VCH

  • 50mA CMOS LDO WITH SHUTDOWN, ERROR OUTPUT AND VREF BYPASS

  • 12頁

  • TELCOM

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50mA CMOS LDO WITH SHUTDOWN,
ERROR OUTPUT AND V
REF
BYPASS
PRELIMINARY INFORMATION
TC1072
TC1072
50mA CMOS LDO WITH SHUTDOWN, ERROR OUTPUT AND V
REF
BYPASS
FEATURES
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Zero Ground Current for Longer Battery Life!
Very Low Dropout Voltage
Guaranteed 50mA Output
High Output Voltage Accuracy
Standard or Custom Output Voltages
Power-Saving Shutdown Mode
ERROR Ouput can be Used as a Low Battery
Detector, or Processor Reset Generator
Bypass Input for Ultra-quiet Operation
Over-Current and Over-Temperature Protection
Space-Saving SOT-23A-6 Package
Pin Compatible Upgrades for Bipolar Regulators
CMOS construction eliminates wasted ground current, sig-
nificantly extending battery life. Total supply current is
typically 50碌A(chǔ) 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碌A(chǔ),
and both V
OUT
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碌F and has a maximum output current of 50mA. For higher
output current versions, please see the TC1107, TC1108
and TC1073 (I
OUT
= 300mA) data sheets.
APPLICATIONS
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Battery Operated Systems
Portable Computers
Medical Instruments
Instrumentation
Cellular / GSM / PHS Phones
Linear Post-Regulator for SMPS
Pagers
ORDERING INFORMATION
Part No.
Output
Voltage **(V) Package
2.5
2.7
3.0
3.3
5.0
GENERAL DESCRIPTION
The TC1072 is a high accuracy (typically
鹵0.5%)
CMOS
upgrade for older (bipolar) low dropout regulators. Designed
specifically for battery-operated systems, the TC1072鈥檚
TYPICAL APPLICATION
1M
Junction
Temp. Range
TC1072-2.5VCH
TC1072-2.7VCH
TC1072-3.0VCH
TC1072-3.3VCH
TC1072-5.0VCH
SOT-23A-6* 鈥?40擄C to +125擄C
SOT-23A-6* 鈥?40擄C to +125擄C
SOT-23A-6* 鈥?40擄C to +125擄C
SOT-23A-6* 鈥?40擄C to +125擄C
SOT-23A-6* 鈥?40擄C to +125擄C
V
IN
1
V
IN
V
OUT
6
V
OUT
1碌F
NOTE:
*SOT-23A-6 is equivalent to the EIAJ (SC-74A)
** Other output voltages available. Please contact TelCom
Semiconductor for details
PIN CONFIGURATION
2
GND
TC1072
Bypass
5
C
BYPASS
470pF
V
OUT
Bypass ERROR
6
5
4
3
4
SHDN
ERROR
ERROR
TC1072
(SOT-23A-6*)
1
V
IN
2
3
TOP VIEW
GND SHDN
Shutdown Control
(from Power Control Logic)
NOTE:
*SOT-23A-6 is equivalent to the EIAJ (SC-74A)
TC1072-01
6/16/97
1
TelCom Semiconductor reserves the right to make changes in the circuitry and specifications ot its devices.

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