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TelCom Semiconductor
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TC1072 Datasheet Preview

TC1072 Datasheet

50mA CMOS LDO WITH SHUTDOWN / ERROR OUTPUT AND VREF BYPASS

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TC1072 pdf
50mA CMOS LDO WITH SHUTDOWN,
ERROR OUTPUT AND VREF BYPASS
PRELIMINARY INFORMATION
TTCC1100772
50mA CMOS LDO WITH SHUTDOWN, ERROR OUTPUT AND VREF BYPASS
FEATURES
s Zero Ground Current for Longer Battery Life!
s Very Low Dropout Voltage
s Guaranteed 50mA Output
s High Output Voltage Accuracy
s Standard or Custom Output Voltages
s Power-Saving Shutdown Mode
s ERROR Ouput can be Used as a Low Battery
Detector, or Processor Reset Generator
s Bypass Input for Ultra-quiet Operation
s Over-Current and Over-Temperature Protection
s Space-Saving SOT-23A-6 Package
s Pin Compatible Upgrades for Bipolar Regulators
APPLICATIONS
s Battery Operated Systems
s Portable Computers
s Medical Instruments
s Instrumentation
s Cellular / GSM / PHS Phones
s Linear Post-Regulator for SMPS
s Pagers
GENERAL DESCRIPTION
The TC1072 is a high accuracy (typically ±0.5%) CMOS
upgrade for older (bipolar) low dropout regulators. Designed
specifically for battery-operated systems, the TC1072’s
TYPICAL APPLICATION
1M
VIN 1 VIN
VOUT 6
VOUT
1µF
CMOS construction eliminates wasted ground current, sig-
nificantly extending battery life. Total supply current is
typically 50µA at full load (20 to 60 times lower than in bipolar
regulators!).
TC1072 key features include ultra low noise operation
(plus optional Bypass input); very low dropout voltage (typi-
cally 100mV at full load) and internal feed-forward compen-
sation for fast response to step changes in load. An error
output (ERROR) is asserted when the TC1072 is out-of-
regulation (due to a low input voltage or excessive output
current). ERROR can be used as a low battery warning or as
a processor RESET signal (with the addition of an external
RC network). Supply current is reduced to less than 1µA,
and both VOUT and ERROR are disabled when the shutdown
input is low. The TC1072 incorporates both over-tempera-
ture and over-current protection.
The TC1072 is stable with an output capacitor of only
1µF and has a maximum output current of 50mA. For higher
output current versions, please see the TC1107, TC1108
and TC1073 (IOUT = 300mA) data sheets.
ORDERING INFORMATION
Part No.
Output
Voltage **(V) Package
Junction
Temp. Range
TC1072-2.5VCH 2.5
SOT-23A-6* – 40°C to +125°C
TC1072-2.7VCH 2.7
SOT-23A-6* – 40°C to +125°C
TC1072-3.0VCH 3.0
SOT-23A-6* – 40°C to +125°C
TC1072-3.3VCH 3.3
SOT-23A-6* – 40°C to +125°C
TC1072-5.0VCH 5.0
SOT-23A-6* – 40°C to +125°C
NOTE: *SOT-23A-6 is equivalent to the EIAJ (SC-74A)
** Other output voltages available. Please contact TelCom
Semiconductor for details
PIN CONFIGURATION
2 TC1072
5
GND
Bypass
3
SHDN
4
ERROR
CBYPASS
470pF
ERROR
VOUT Bypass ERROR
654
TC1072
(SOT-23A-6*)
Shutdown Control
(from Power Control Logic)
12 3
VIN GND SHDN
TOP VIEW
NOTE: *SOT-23A-6 is equivalent to the EIAJ (SC-74A)
TC1072-01 6/16/97
TelCom Semiconductor reserves the right to make changes in the circuit1ry and specifications ot its devices.



TelCom Semiconductor
TelCom Semiconductor

TC1072 Datasheet Preview

TC1072 Datasheet

50mA CMOS LDO WITH SHUTDOWN / ERROR OUTPUT AND VREF BYPASS

No Preview Available !

TC1072 pdf
PRELIMINARY INFORMATION
50mA CMOS LDO WITH SHUTDOWN,
ERROR OUTPUT AND VREF BYPASS
TC1072
ABSOLUTE MAXIMUM RATINGS*
Input Voltage .................................................................7V
Output Voltage .................................. (– 0.3) to (VIN + 0.3)
Power Dissipation .................... Internally Limited (Note 7)
Operating Temperature .................... – 40°C < TJ < 125°C
Storage Temperature ............................ – 65°C to +150°C
Maximum Voltage on Any Pin ........... VIN + 0.3V to – 0.3V
Lead Temperature (Soldering, 10 Sec.) ................ +260°C
*Stresses beyond those listed under "Absolute Maximum Ratings" may
cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond
those indicated in the operational sections of the specifications is not
implied. Exposure to absolute maximum rating conditions for extended
periods may affect device reliability.
ELECTRICAL CHARACTERISTICS: VIN = VOUT + 1V, IL = 0.1mA, CL = 3.3µF, SHDN > VIH, TA = 25°C, unless other-
wise specified.BOLDFACE type specifications apply for junction temperatures of
– 40°C to +125°C.
Symbol
VIN
IOUTMAX
VOUT
TC VOUT
Parameter
Input Operating Voltage
Maximum Output Current
Output Voltage
VOUT Temperature Coefficient
VOUT/VIN Line Regulation
VOUT/VOUT Load Regulation
VIN – VOUT Dropout Voltage (Note 4)
IGND
IIN
IINSD
PSRR
IOUTSC
VOUT/PD
eN
Ground Pin Current
Supply Current
Shutdown Supply Current
Power Supply Rejection Ratio
Output Short Circuit Current
Thermal Regulation
Output Noise
SHDN Input
VIH SHDN Input High Threshold
VIL SHDN Input Low Threshold
Test Conditions
Min Typ Max
Note 1
Note 2
50
VR – 2.5%
(VR + 1V) < VIN < 6V
IL = 0.1mA to IOUTMAX
(Note 3)
IL = 0.1mA
IL = 20mA
IL = 50mA
(Note 4)
IL = IOUTMAX, (Note 5)
SHDN = VIH, IL = 0
SHDN = 0V
FRE 1kHz
VOUT = 0V
Note 6
IL = IOUTMAX
470pF from Bypass to GND
VR ±0.5%
40
0.05
0.5
5
65
95
0
50
64
200
0.04
260
6.5
VR + 2.5%
0.05
450
Units
V
mA
V
ppm/°C
%/V
%
mV
µA
µA
µA
dB
mA
%/W
nV/Hz
VIN = 2.5V to 6.5V
VIN = 2.5V to 6.5V
45 — — %VIN
— — 15 %VIN
TC1072-01 6/16/97
2


Part Number TC1072
Description 50mA CMOS LDO WITH SHUTDOWN / ERROR OUTPUT AND VREF BYPASS
Maker TelCom Semiconductor
Total Page 12 Pages
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