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TC1224-VCT Datasheet(PDF) 1 Page - Microchip Technology

No. de pieza TC1224-VCT
Descripción Electrónicos  50mA and 100mA CMOS LDOs with Shutdown
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Fabricante Electrónico  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC1224-VCT Datasheet(HTML) 1 Page - Microchip Technology

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© 2002 Microchip Technology Inc.
DS21368B-page 1
TC1223/TC1224
Features
• Extremely Low Ground Current for Longer Battery
Life
• Very Low Dropout Voltage
• Choice of 50mA and 100mA Output (TC1223,
TC1224, Respectively)
• High Output Voltage Accuracy
• Standard or Custom Output Voltages
• Power Saving Shutdown Mode
• Over Current and Over Temperature Protection
• Space-Saving 5-Pin SOT-23A Package
• Pin Compatible Upgrades for Bipolar Regulators
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, 2.7, 2.8, 2.85, 3.0, 3.3, 3.6,
4.0, 5.0.
Other output voltages are available. Please contact Microchip
Technology Inc. for details.
Package Type
General Description
The TC1223 and TC1224 are high accuracy (typically
±0.5%) CMOS upgrades for older (bipolar) low dropout
regulators such as the LP2980. Designed specifically
for battery-operated systems, the devices’ CMOS
construction
eliminates
wasted
ground
current,
significantly extending battery life. Total supply current
is typically 50
µA at full load (20 to 60 times lower than
in bipolar regulators).
The devices’ key features include ultra low noise
operation; very low dropout voltage (typically 85mV,
TC1223 and 180mV, TC1224 at full load) and fast
response to step changes in load. Supply current is
reduced to 0.5
µA (max) and VOUT falls to zero when
the shutdown input is low. The devices incorporate both
over temperature and over current protection.
The TC1223 and TC1224 are stable with an output
capacitor of only 1
µF and have a maximum output
current of 50mA and 100mA respectively. For higher
output current versions, please see the TC1107,
TC1108 and TC1173 (IOUT = 300mA) data sheets.
Typical Application
Part Number
Package
Junction
Temp. Range
TC1223-xxVCT
5-Pin SOT-23A
-40°C to +125°C
TC1224-xxVCT
5-Pin SOT-23A
-40°C to +125°C
5-Pin SOT-23A
SHDN
5
TC1223
TC1224
13
4
2
VIN
VOUT
GND
NC
NOTE: 5-Pin SOT-23A is equivalent to the EIAJ (SC-74A)
TC1223
TC1224
VOUT
SHDN
GND
NC
1
µF
+
VIN
VIN
VOUT
1
5
2
4
3
Shutdown Control
(from Power Control Logic)
50mA and 100mA CMOS LDOs with Shutdown


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