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TC1269-30VUA Datasheet

  • TC1269-30VUA

  • 300mA CMOS LDO with Shutdown and VREF Bypass

  • 434.06KB

  • 12頁(yè)

  • MICROCHIP   MICROCHIP

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TC1269
300mA CMOS LDO with Shutdown and V
REF
Bypass
Features
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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
General Description
The TC1269 is a fixed output, high accuracy (typically
鹵0.5%) CMOS upgrade for older (bipolar) low dropout
regulators. Total supply current is typically 50碌A(chǔ) at 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碌A(chǔ)
(typical) and V
OUT
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碌F and has a maximum
output current of 300mA.
Applications
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Battery Operated Systems
Portable Computers
Medical Instruments
Instrumentation
Cellular/GSM/PHS Phones
Linear Post-Regulator for SMPS
Pagers
Digital Cameras
Typical Application
V
OUT
1
+
C1
1碌F
2
V
OUT
V
IN
8
V
IN
NC
SHDN
7
Shutdown Control
(from Power
Control Logic)
6
TC1269
3
NC
NC
Bypass
Device Selection Table
Part Number
TC1269-2.5VUA
TC1269-2.8VUA
TC1269-3.0VUA
TC1269-3.3VUA
TC1269-5.0VUA
Output*
Voltage
(V)
2.5
2.8
3.0
3.3
5.0
Package
Junction
Temp. Range
4 GND
C
BYPASS
470pF
(Optional)
8-Pin MSOP -40擄C to +125擄C
8-Pin MSOP -40擄C to +125擄C
8-Pin MSOP -40擄C to +125擄C
8-Pin MSOP -40擄C to +125擄C
8-Pin MSOP -40擄C to +125擄C
*Other output voltages are available. Please contact Microchip
Technology Inc. for details.
Package Type
8-Pin MSOP
V
OUT
NC
NC
GND
1
2
3
4
8
V
IN
SHDN
NC
Bypass
TC1269
7
6
5
2002 Microchip Technology Inc.
DS21380B-page 1
漏

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