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TC1070VCT Datasheet

  • TC1070VCT

  • 50mA ADJUSTABLE CMOS LDO WITH SHUTDOWN

  • 12頁(yè)

  • TELCOM

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50mA ADJUSTABLE CMOS
LDO WITH SHUTDOWN
PRELIMINARY INFORMATION
TC1070
TC1070
50mA ADJUSTABLE CMOS LDO WITH SHUTDOWN
FEATURES
s
s
s
s
s
s
s
s
Zero Ground Current for Longer Battery Life!
Adjustable Output Voltage
Very Low Dropout Voltage
Guaranteed 50mA Output
Power-Saving Shutdown Mode
Over-Current and Over-Temperature Protection
Space-Saving SOT-23A-5 Package
Pin Compatible with LP2980 and MIC5205 Regulators
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鈥檚 CMOS construction eliminates wasted ground
current, significantly extending battery life. Total supply
current is typically 50碌A(chǔ) 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碌A(chǔ) 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 V
OUT
to ADJ.
The TC1070 is stable with an output capacitor of only
1碌F and has a maximum output current of 50mA. For higher
output versions, please see the TC1107, TC1108
(I
OUT
= 300mA) data sheets.
APPLICATIONS
s
s
s
s
s
s
s
Battery Operated Systems
Portable Computers
Medical Instruments
Instrumentation
Cellular / GSM / PHS Phones
Linear Post-Regulator for SMPS
Pagers
ORDERING INFORMATION
TYPICAL APPLICATION
Part No.
TC1070VCT
Output
Voltage **(V) Package
Adjustable
Junction
Temp. Range
SOT-23A-5* 鈥?40擄C to +125擄C
NOTE:
*SOT-23A-5 is equivalent to the EIAJ (SC-74A)
** Other output voltages available. Please contact TelCom
Semiconductor for details
V
IN
1
V
IN
V
OUT
5
C1
1碌F
V
OUT
PIN CONFIGURATION
V
OUT
ADJ
4
2
GND
TC1070
5
R1
TC1070
(SOT-23A-5*)
3
SHDN
ADJ
4
1
R2
2
3
TOP VIEW
V
IN
GND SHDN
NOTE:
*SOT-23A-5 is equivalent to the EIAJ (SC-74A)
Shutdown Control
(from Power Control Logic)
V
OUT
= V
REF
x
[
R2 + 1
R1
]
TC1070-01
6/13/97
TelCom Semiconductor reserves the right to make changes in the circuitry
1
and specifications ot its devices.

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