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TC1070 Datasheet(PDF) 1 Page - Microchip Technology

Part No. TC1070
Description  50mA, 100mA and 150mA Adjustable CMOS LDOs with Shutdown
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Maker  MICROCHIP [Microchip Technology]
Homepage  http://www.microchip.com
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TC1070 Datasheet(HTML) 1 Page - Microchip Technology

 
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© 2002 Microchip Technology Inc.
DS21353B-page 1
TC1070/TC1071/TC1187
Features
• Zero Ground Current for Longer Battery Life
• Adjustable Output Voltage
• Very Low Dropout Voltage
• Choice of 50mA (TC1070), 100mA (TC1071) and
150mA (TC1187) Output
• Power-Saving Shutdown Mode
• Over Current and Over Temperature Protection
• Space-Saving 5-Pin SOT-23A Package
• Pin Compatible with Bipolar Regulators
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 TC1070, TC1071 and TC1187 are adjustable
LDOs designed to supersede a variety of older (bipolar)
voltage regulators. 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
(TC1070); 180mV (TC1071); and 270mV (TC1187) at
full load, and fast response to step changes in load.
Supply current is reduced to 0.5
µA (max) when the
shutdown input is low. The devices incorporate both
over-temperature and over-current protection. Output
voltage is programmed with a simple resistor divider
from VOUT to ADJ to GND.
The TC1070, TC1071 and TC1187 are stable with an
output capacitor of only 1
µF and have a maximum
output
current
of
50mA,
100mA
and
150mA,
respectively. For higher output versions, please see the
TC1174 (IOUT = 300mA) data sheet.
Typical Application
Part Number
Output
Voltage
(V)
Package
Junction
Temp. Range
TC1070VCT
Adjustable 5-Pin SOT-23A -40°C to +125°C
TC1071VCT
Adjustable 5-Pin SOT-23A -40°C to +125°C
TC1187VCT
Adjustable 5-Pin SOT-23A -40°C to +125°C
SHDN
5
5-Pin SOT-23A
TC1070
TC1071
TC1187
13
4
2
VIN
VOUT
GND
ADJ
NOTE: 5-Pin SOT-23A is equivalent to the EIAJ (SC-74A)
TC1070
TC1071
TC1187
VOUT
GND
C1
1
µF
+
VIN
VIN
VOUT
1
5
2
4
3
SHDN
Shutdown Control
(from Power Control Logic)
ADJ
R1
R2
[
]
VOUT = VREF x
+1
R1
R2
50mA, 100mA and 150mA Adjustable CMOS LDOs with Shutdown


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