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TC1174 Datasheet(PDF) 1 Page - Microchip Technology

No. de pieza TC1174
Descripción Electrónicos  300mA CMOS LDO with Shutdown and VREF Bypass
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Fabricante Electrónico  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC1174 Datasheet(HTML) 1 Page - Microchip Technology

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 2002-2012 Microchip Technology Inc.
DS21363C-page 1
TC1174
Features
• Extremely Low Supply Current (50
A, Typ.)
• Very Low Dropout Voltage
• 300mA Output Current
• Adjustable Output Voltages
• 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
Package Type
General Description
The TC1174 is an adjustable output CMOS low dropout
regulator. Total supply current is typically 50
A at full
load (20 to 60 times lower than in bipolar regulators).
TC1174 key features include ultra low noise operation
(plus optional Bypass input); very low dropout voltage
(typically 270mV at full load) and internal feed-forward
compensation for fast response to step changes in
load. Supply current is reduced to 0.05
A (typical) and
VOUT falls to zero when the shutdown input is low.
The TC1174 incorporates both over temperature and
over current protection. The TC1174 is stable with an
output capacitor of only 1
F and has a maximum
output current of 300mA.
Typical Application
Part Number
Output
Voltage
(V)
Package
Junction
Temp. Range
TC1174VOA
Adjustable
8-Pin SOIC
-40°C to +125°C
TC1174VUA
Adjustable
8-Pin MSOP
-40°C to +125°C
8-Pin SOIC
1
2
3
4
VIN
5
6
7
8
NC
SHDN
VOUT
GND
NC
ADJ
8-Pin MSOP
1
2
3
4
VIN
5
6
7
8
NC
VOUT
GND
NC
ADJ
TC1174VOA
TC1174VUA
Bypass
SHDN
Bypass
TC1174
1
2
3
4
5
6
7
8
VOUT
VOUT
CBYPASS
470pF
(Optional)
Shutdown
Control
(from Power
Control Logic)
GND
NC
ADJ
VIN
VIN
NC
NC
Bypass
SHDN
R1
470K
470K
R2
C1
1
μF
VOUT = VREF x
[— + 1]
R1
R2
+
300mA CMOS LDO with Shutdown and VREF Bypass


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