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TC1173 Datasheet(PDF) 1 Page - Microchip Technology

Part No. TC1173
Description  300mA CMOS LDO with Shutdown ERROR output and Bypass
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC1173 Datasheet(HTML) 1 Page - Microchip Technology

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© 2002 Microchip Technology Inc.
DS21362B-page 1
TC1173
Features
• Extremely Low Supply Current for Longer Battery Life
• Very Low Dropout Voltage
• 300mA Output Current
• Standard or Custom Output Voltages
• ERROR Output Can Be Used as a Low Battery
Detector or Processor Reset Generator
• Power Saving Shutdown Mode
• Bypass Input for Ultra Quiet Operation
• Over Current and Over Temperature Protection
• Space-Saving MSOP Package Option
Applications
• Battery Operated Systems
• Portable Computers
• Medical Instruments
• Instrumentation
• Cellular/GSM/PHS Phones
• Linear Post-Regulators for SMPS
• Pagers
Device Selection Table
NOTE: xx indicates output voltages
Available Output Voltages: 2.5, 2.8, 3.0, 3.3, 5.0.
Other output voltages are available. Please contact Microchip
Technology Inc. for details.
General Description
The TC1173 is a precision output (typically ±0.5%)
CMOS low dropout regulator. Total supply current is
typically 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 canbeset 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.
Typical Application
Package Type
Part Number
Package
Junction
Temp. Range
TC1173-xxVOA
8-Pin SOIC
-40°C to +125°C
TC1173-xxVUA
8-Pin MSOP
-40°C to +125°C
TC1173
1
2
3
45
6
7
8
VOUT
VOUT
CBYPASS
470pF
(Optional)
Shutdown Control
(from Power Control Logic)
C1
1
µF
GND
NC
Bypass
VIN
VIN
NC
SHDN
+
ERROR
R3
1M
ERROR
8-Pin SOIC
1
2
3
4
VIN
5
6
7
8
NC
VOUT
GND
NC
Bypass
TC1173VOA
8-Pin MSOP
1
2
3
4
VIN
5
6
7
8
NC
VOUT
GND
NC
Bypass
SHDN
TC1173VUA
ERROR
SHDN
ERROR
300mA CMOS LDO with Shutdown ERROR Output and Bypass


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