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TC1173-3.3VUA Datasheet(PDF) 1 Page - TelCom Semiconductor, Inc

No. de pieza TC1173-3.3VUA
Descripción Electrónicos  300mA CMOS LDO with Shutdown, ERROR Output and Bypass
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Fabricante Electrónico  TELCOM [TelCom Semiconductor, Inc]
Página de inicio  http://www.telcom-semi.com
Logo TELCOM - TelCom Semiconductor, Inc

TC1173-3.3VUA Datasheet(HTML) 1 Page - TelCom Semiconductor, Inc

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TC1173
TC1173-2 2/2/00 TelCom Semiconductor reserves the right to make changes in the circuitry and specifications of its devices.
GENERAL DESCRIPTION
The TC1173 is a precision output (typically
±0.5%)
CMOS low dropout regulator. Total supply current is typi-
cally 50
µA at full load (20 to 60 times lower than in bipolar
regulators!).
TC1173 key features include ultra low noise operation
(plus optional Bypass input); very low dropout voltage
(typically 240mV at full load) and internal feed-forward
compensation for fast response to step changes in load. An
error output (ERROR) is asserted when the TC1173 is out-
of-regulation (due to a low input voltage or excessive output
current). ERROR can be set as a low battery warning or as
a processor RESET signal (with the addition of an external
RC network). Supply current is reduced to 0.05
µA (typical)
and VOUT and ERROR fall to zero when the shutdown input
is low.
The TC1173 incorporates both over-temperature and
over-current protection. The TC1173 is stable with an output
capacitor of only 1
µF and has a maximum output current of
300mA.
300mA CMOS LDO with Shutdown, ERROR Output and Bypass
FEATURES
s
Extremely Low Supply Current for Longer Battery
Life!
s
Very Low Dropout Voltage
s
Guaranteed 300mA Output
s
Standard or Custom Output Voltages
s
ERROR Output Can be Used as a Low Battery
Detector or Processor Reset Generator
s
Power-Saving Shutdown Mode
s
Bypass Input for Ultra-Quiet Operation
s
Over-Current and Over-Temperature Protection
s
Space-Saving MSOP Package Option
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
PIN CONFIGURATION
1
2
3
4
VIN
5
6
7
8
NC
ERROR
VOUT
GND
NC
Bypass
SHDN
1
2
3
4
VIN
5
6
7
8
NC
ERROR
VOUT
GND
NC
Bypass
SHDN
TC1173VUA
TC1173VOA
MSOP
SOIC
ORDERING INFORMATION
Part
Junction
Number
Package
Temp. Range
TC1173-xxVOA
8-Pin SOIC
– 40
°C to +125°C
TC1173-xxVUA
8-Pin MSOP
– 40
°C to +125°C
Available Output Voltages:
2.5, 2.8, 3.0, 3.3, 5.0
xx indicates output voltages
Other output voltages are available. Please contact TelCom
Semiconductor for details.
TYPICAL APPLICATION
TC1173
1
2
3
4
5
6
7
8
VOUT
Shutdown Control
(from Power Control Logic)
C1
1
µF
GND
NC
VIN
NC
SHDN
Bypass
CBYPASS
470pF
(Optional)
ERROR
R3
1M
VIN
ERROR


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