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TC1070 Datasheet(PDF) 1 Page - TelCom Semiconductor, Inc

No. de pieza TC1070
Descripción Electrónicos  50mA ADJUSTABLE CMOS LDO WITH SHUTDOWN
Download  12 Pages
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Fabricante Electrónico  TELCOM [TelCom Semiconductor, Inc]
Página de inicio  http://www.telcom-semi.com
Logo TELCOM - TelCom Semiconductor, Inc

TC1070 Datasheet(HTML) 1 Page - TelCom Semiconductor, Inc

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TC1070
1
PRELIMINARY INFORMATION
TC1070-01
6/13/97
50mA ADJUSTABLE CMOS
LDO WITH SHUTDOWN
TC1070
FEATURES
s
Zero Ground Current for Longer Battery Life!
s
Adjustable Output Voltage
s
Very Low Dropout Voltage
s
Guaranteed 50mA Output
s
Power-Saving Shutdown Mode
s
Over-Current and Over-Temperature Protection
s
Space-Saving SOT-23A-5 Package
s
Pin Compatible with LP2980 and MIC5205 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
50mA ADJUSTABLE CMOS LDO WITH SHUTDOWN
TYPICAL APPLICATION
TelCom Semiconductor reserves the right to make changes in the circuitry and specifications ot its devices.
GENERAL DESCRIPTION
The TC1070 is an adjustable LDO designed to super-
cede a variety of older (bipolar) voltage regulators. De-
signed specifically for battery-operated systems, the
TC1070’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!).
TC1070 key features include ultra low noise operation
very low dropout voltage (typically 100mV at full load) and
internal feed-forward compensation for fast response to
step changes in load. Supply current is reduced to less than
1
µA when the shutdown input is low. The TC1070 incorpo-
rates both over-temperature and over-current protection.
Output voltage is programmed with a simple resistor divider
from VOUT to ADJ.
The TC1070 is stable with an output capacitor of only
1
µF and has a maximum output current of 50mA. For higher
output versions, please see the TC1107, TC1108
(IOUT = 300mA) data sheets.
C1
1
µF
Shutdown Control
(from Power Control Logic)
TC1070
VIN
1
2
3
4
R2
R1
5
VIN
VOUT
ADJ
V
OUT = VREF
x
[R2 + 1]
R1
SHDN
GND
VOUT
PIN CONFIGURATION
ORDERING INFORMATION
Output
Junction
Part No.
Voltage **(V) Package
Temp. Range
TC1070VCT
Adjustable
SOT-23A-5* – 40
°C to +125°C
NOTE: *SOT-23A-5 is equivalent to the EIAJ (SC-74A)
** Other output voltages available. Please contact TelCom
Semiconductor for details
NOTE: *SOT-23A-5 is equivalent to the EIAJ (SC-74A)
TC1070
(SOT-23A-5*)
TOP VIEW
1
3
5
4
2
SHDN
ADJ
GND
VOUT
VIN


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