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Microchip Technology - (TC2xxx) 50 mA / 100 mA / 150 mA CMOS LDOs with Shutdown and Reference Bypass

Numéro de référence TC2014
Description (TC2xxx) 50 mA / 100 mA / 150 mA CMOS LDOs with Shutdown and Reference Bypass
Fabricant Microchip Technology 
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TC2014 fiche technique
M TC2014/2015/2185
50 mA, 100 mA, 150 mA CMOS LDOs with
Shutdown and Reference Bypass
Features
• Low Supply Current: 80 µA (Max)
• Low Dropout Voltage: 140 mV (Typ) @ 150 mA
• High Output Voltage Accuracy: ±0.4% (Typ)
• Standard or Custom Output Voltages
• Power-Saving Shutdown Mode
• Reference Bypass Input for Ultra Low-Noise
Operation
• Fast Shutdown Response Time: 60 µsec (Typ)
• Over-Current Protection
• Space-Saving 5-Pin SOT-23A Package
• Pin Compatible Upgrades for Bipolar Regulators
• Wide Operating Temperature Range:
-40°C to +125°C
Applications
• Battery Operated Systems
• Portable Computers
• Medical Instruments
• Instrumentation
• Cellular / GSM / PHS Phones
• Linear Post-Regulator for SMPS
• Pagers
Package Type
5-Pin SOT-23A
VOUT
Bypass
54
TC2014
TC2015
TC2185
12 3
VIN GND SHDN
General Description
The TC2014, TC2015 and TC2185 are high-accuracy
(typically ±0.4%) CMOS upgrades for bipolar low drop-
out regulators, such as the LP2980. Total supply cur-
rent is typically 55 µA; 20 to 60 times lower than in
bipolar regulators.
The key features of the device include low noise oper-
ation (plus bypass reference), low dropout voltage
– typically 45 mV for the TC2014, 90 mV for the
TC2015, and 140 mV for the TC2185, 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 also incorporate
over-current protection.
The TC2014, TC2015 and TC2185 are stable with an
output capacitor of 1 µF and have a maximum output
current of 50 mA, 100 mA and 150 mA, respectively.
For higher output versions, see the TC1107
(DS21356), TC1108 (DS21357) and TC1173
(DS21362) (IOUT = 300 mA) datasheets.
Related Literature
• Application Notes: AN765, AN766, AN776 and
AN792
Typical Application
VIN 1 VIN
+
1 µF
VOUT
5
VOUT
+
1 µF
2 TC2014
GND TC2015
TC2185
3
SHDN Bypass
4
Shutdown Control
(from Power Control Logic)
0.01 µF
Reference
Bypass Cap
(Optional)
2003 Microchip Technology Inc.
DS21662C-page 1

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