PRELIMINARY INFORMATION
100mA CMOS LDO WITH SHUTDOWN
AND REFERENCE BYPASS
TC1015
TC1015
100mA CMOS LDO WITH SHUTDOWN AND REFERENCE BYPASS
FEATURES
GENERAL DESCRIPTION
■ Zero Ground Current for Longer Battery Life!
■ Very Low Dropout Voltage
■ Guaranteed 100mA Output
The TC1015 is a high accuracy (typically ±0.5%) CMOS
upgrade for older (bipolar) low dropout regulators such as
the LP2980. Designed specifically for battery-operated sys-
tems, the TC1015’s CMOS construction eliminates wasted
ground current, significantly extending battery life. Total
supply current is typically 50µA at full load (20 to 60 times
lower than in bipolar regulators!).
TC1015 key features include ultra low-noise operation
(plus optional Bypass input); very low dropout voltage (typi-
cally 200mV at full load) and internal feed-forward compen-
sation for fast response to step changes in load. Supply
current is reduced to 0.05µA and VOUT is disabled when the
shutdown input is low. The TC1015 also incorporates both
over-temperature and over-current protection.
■ High Output Voltage Accuracy
■ Standard or Custom Output Voltages
■ Power-Saving Shutdown Mode
■ Reference Bypass Input for Ultra Low-Noise
Operation
■ Over-Current and Over-Temperature Protection
■ Space-Saving SOT-23A-5 Package
■ Pin Compatible Upgrade for MIC5205 and
NSC2980
APPLICATIONS
The TC1015 is stable with an output capacitor of only
1µF and has a maximum output current of 100mA. For
higher output versions, please see the TC1107, TC1108,
TC1173 (IOUT = 300mA) data sheets.
■ Battery Operated Systems
■ Portable Computers
■ Medical Instruments
■ Instrumentation
■ Cellular / GSM / PHS Phones
■ Linear Post-Regulator for SMPS
■ Pagers
ORDERING INFORMATION
Output
Junction
Temp. Range
Part No.
Voltage **(V) Package
TC1015-2.5VCT
TC1015-2.7VCT
TC1015-3.0VCT
TC1015-3.3VCT
TC1015-5.0VCT
2.5
2.7
3.0
3.3
5.0
SOT-23A-5* – 40°C to +125°C
SOT-23A-5* – 40°C to +125°C
SOT-23A-5* – 40°C to +125°C
SOT-23A-5* – 40°C to +125°C
SOT-23A-5* – 40°C to +125°C
TYPICAL APPLICATION
1
5
V
V
V
OUT
V
OUT
IN
IN
NOTE: *SOT-23A-5 is equivalent to the EIAJ (SC-74A)
** Other output voltages available. Please contact TelCom
Semiconductor for details
1µF
2
3
GND
TC1015
PIN CONFIGURATION
VOUT
5
Bypass
4
4
SHDN
Bypass
470pF
Reference
Bypass Cap
(Optional)
TC1015
(SOT-23A-5*)
TOP VIEW
2
3
1
Shutdown Control
(from Power Control Logic)
VIN
GND
SHDN
NOTE: *SOT-23A-5 is equivalent to the EIAJ (SC-74A)
TelCom Semiconductor reserves the right to make changes in the circuitry and1specifications to its devices.
TC1015-01-6/5/97
TELCOM [ TELCOM SEMICONDUCTOR, INC ]
