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TC2055-2.85VCTTR Datasheet(PDF) 1 Page - Microchip Technology

Part # TC2055-2.85VCTTR
Description  50 mA, 100 mA, and 150 mA CMOS LDOs with Shutdown and Error Output
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC2055-2.85VCTTR Datasheet(HTML) 1 Page - Microchip Technology

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© 2009 Microchip Technology Inc.
DS21663D-page 1
TC2054/2055/2186
Features
• Low Supply Current (55 µA Typical) for Longer
Battery Life
• Low Dropout Voltage: 140 mV (Typical) @
150 mA
• High Output Voltage Accuracy: ±0.4% (Typical)
• Standard or Custom Output Voltages
• Power-Saving Shutdown Mode
• ERROR Output Can Be Used as a Low Battery
Detector or Processor Reset Generator
• Fast Shutdown Reponse Time: 60 µs (Typical)
• Overcurrent and Overtemperature Protection
• Space-Saving 5-Pin SOT-23A Package
• Pin Compatible Upgrades for Bipolar Regulators
• Standard Output Voltage Options:
- 1.8V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 3.0V,
3.3V, 5.0V
Applications
• Battery Operated Systems
• Portable Computers
• Medical Instruments
• Instrumentation
• Cellular / GSMS / PHS Phones
• Pagers
Typical Application
General Description
The TC2054, TC2055 and TC2186 are high accuracy
(typically ±0.4%) CMOS upgrades for older (bipolar)
low dropout regulators. Designed specifically for
battery-operated systems, the devices’ total supply
current is typically 55 µA at full load (20 to 60 times
lower than in bipolar regulators).
The devices’ key features include low noise operation,
low dropout voltage – typically 45 mV (TC2054); 90 mV
(TC2055); and 140 mV (TC2186) 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). Supply current is reduced to
0.5 µA (maximum) and both VOUT and ERROR are
disabled when the shutdown input is low. The devices
also incorporate overcurrent and overtemperature
protection.
The TC2054, TC2055 and TC2186 are stable with a
low esr ceramic output capacitor of 1 µF and have a
maximum output current of 50 mA, 100 mA and
150 mA, respectively. This LDO Family also features a
fast response time (60 µs typically) when released from
shutdown.
Package Type
1µF
Shutdown Control
(from Power Control Logic)
TC2054
TC2055
TC2186
VIN
1
2
34
5
VIN
VOUT
ERROR
SHDN
GND
1M
VOUT
ERROR
1µF
TC2054
TC2055
TC2186
1
3
4
5
2
ERROR
GND
VOUT
VIN
SHDN
5-Pin SOT-23A
Top View
50 mA, 100 mA, and 150 mA CMOS LDOs
with Shutdown and Error Output


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