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TC1269 Datasheet(PDF) 1 Page - Microchip Technology

Part No. TC1269
Description  300mA CMOS LDO with Shutdown and VREF Bypass
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Maker  MICROCHIP [Microchip Technology]
Homepage  http://www.microchip.com
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TC1269 Datasheet(HTML) 1 Page - Microchip Technology

 
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© 2002 Microchip Technology Inc.
DS21380B-page 1
TC1269
Features
• Very Low Ground Current for Longer Battery Life
• Very Low Dropout Voltage
• 300mA Output Circuit
• High Output Voltage Accuracy
• Standard or Custom Output Voltages
• Power Saving Shutdown Mode
• Bypass Input for Ultra Quiet Operation
• Over Current and Over Temperature Protection
• Space-Saving MSOP Package
Applications
• Battery Operated Systems
• Portable Computers
• Medical Instruments
• Instrumentation
• Cellular/GSM/PHS Phones
• Linear Post-Regulator for SMPS
• Pagers
• Digital Cameras
Device Selection Table
*Other output voltages are available. Please contact Microchip
Technology Inc. for details.
Package Type
General Description
The TC1269 is a fixed output, high accuracy (typically
±0.5%) CMOS upgrade for older (bipolar) low dropout
regulators. Total supply current is typically 50
µAat full
load (20 to 60 times lower than in bipolar regulators).
TC1269 key features include ultra low noise operation
(plus optional Bypass input); very low dropout voltage
(typically 240mV at full load), and fast response to step
changes in load. Supply current is reduced to 0.05
µA
(typical) and VOUT falls to zero when the shutdown
input is low.
The TC1269 incorporates both over temperature and
over current protection. The TC1269 is stable with an
output capacitor of only 1
µF and has a maximum
output current of 300mA.
Typical Application
Part Number
Output*
Voltage
(V)
Package
Junction
Temp. Range
TC1269-2.5VUA
2.5
8-Pin MSOP -40°C to +125°C
TC1269-2.8VUA
2.8
8-Pin MSOP -40°C to +125°C
TC1269-3.0VUA
3.0
8-Pin MSOP -40°C to +125°C
TC1269-3.3VUA
3.3
8-Pin MSOP -40°C to +125°C
TC1269-5.0VUA
5.0
8-Pin MSOP -40°C to +125°C
8-Pin MSOP
VIN
SHDN
Bypass
VOUT
NC
NC
GND
NC
TC1269
1
2
3
45
6
7
8
TC1269
1
2
3
4
6
7
8
VOUT
VOUT
CBYPASS
470pF
(Optional)
Shutdown Control
(from Power
Control Logic)
C1
1
µF
NC
NC
GND
Bypass
VIN
VIN
NC
SHDN
+
300mA CMOS LDO with Shutdown and VREF Bypass


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