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TC1054-2.7VCT Datasheet(PDF) 2 Page - Microchip Technology

Part No. TC1054-2.7VCT
Description  50mA, 100mA and 150mA CMOS LDOs with Shutdown and ERROR Output
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Maker  MICROCHIP [Microchip Technology]
Homepage  http://www.microchip.com
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TC1054-2.7VCT Datasheet(HTML) 2 Page - Microchip Technology

 
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TC1054/TC1055/TC1186
DS21350B-page 2
© 2002 Microchip Technology Inc.
General Description
The TC1054, TC1055 and TC1186 are high accuracy
(typically ±0.5%) CMOS upgrades for older (bipolar)
low dropout regulators. Designed specifically for
battery-operated
systems,
the
devices’
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).
The devices’ key features include ultra low noise
operation, very low dropout voltage – typically 85mV
(TC1054); 180mV (TC1055); and 270mV (TC1186) at
full load — and fast response to step changes in load.
An error output (ERROR) is asserted when the devices
are out-of-regulation (due to a low input voltage or
excessive output current). ERROR canbeusedas a
low battery warning or as a processor RESET signal
(with the addition of an external RC network). Supply
current is reduced to 0.5
µA (max) and both VOUT and
ERROR are disabled when the shutdown input is low.
The devices incorporate both over-temperature and
over-current protection.
The TC1054, TC1055 and TC1186 are stable with an
output capacitor of only 1
µF and have a maximum
output
current
of
50mA,
100mA
and
150mA,
respectively. For higher output current regulators,
please see the TC1173 (IOUT = 300mA) data sheet.
Typical Application
TC1054
TC1055
TC1186
VOUT
GND
1
µF
+
VIN
VIN
VOUT
1
5
2
4
3
SHDN
Shutdown Control
(from Power Control Logic)
ERROR
ERROR


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