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TelCom Semiconductor
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TC1070 Datasheet Preview

TC1070 Datasheet

50mA ADJUSTABLE CMOS LDO WITH SHUTDOWN

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TC1070 pdf
50mA ADJUSTABLE CMOS
LDO WITH SHUTDOWN
PRELIMINARY INFORMATION
TTCC1100770
50mA ADJUSTABLE CMOS LDO WITH SHUTDOWN
FEATURES
s Zero Ground Current for Longer Battery Life!
s Adjustable Output Voltage
s Very Low Dropout Voltage
s Guaranteed 50mA Output
s Power-Saving Shutdown Mode
s Over-Current and Over-Temperature Protection
s Space-Saving SOT-23A-5 Package
s Pin Compatible with LP2980 and MIC5205 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 TC1070 is an adjustable LDO designed to super-
cede a variety of older (bipolar) voltage regulators. De-
signed specifically for battery-operated systems, the
TC1070’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!).
TC1070 key features include ultra low noise operation
very low dropout voltage (typically 100mV at full load) and
internal feed-forward compensation for fast response to
step changes in load. Supply current is reduced to less than
1µA when the shutdown input is low. The TC1070 incorpo-
rates both over-temperature and over-current protection.
Output voltage is programmed with a simple resistor divider
from VOUT to ADJ.
The TC1070 is stable with an output capacitor of only
1µF and has a maximum output current of 50mA. For higher
output versions, please see the TC1107, TC1108
(IOUT = 300mA) data sheets.
TYPICAL APPLICATION
VIN 1 VIN
VOUT 5
C1
1µF
VOUT
2 TC1070
GND
R1
3
SHDN
ADJ 4
R2
Shutdown Control
(from Power Control Logic)
[ ]VOUT = VREF x R2 + 1
R1
ORDERING INFORMATION
Part No.
Output
Voltage **(V) Package
Junction
Temp. Range
TC1070VCT Adjustable SOT-23A-5* – 40°C to +125°C
NOTE: *SOT-23A-5 is equivalent to the EIAJ (SC-74A)
** Other output voltages available. Please contact TelCom
Semiconductor for details
PIN CONFIGURATION
VOUT
5
ADJ
4
TC1070
(SOT-23A-5*)
12 3
VIN GND SHDN
TOP VIEW
NOTE: *SOT-23A-5 is equivalent to the EIAJ (SC-74A)
TC1070-01 6/13/97 TelCom Semiconductor reserves the right to make changes in the circuitry1and specifications ot its devices.



TelCom Semiconductor
TelCom Semiconductor

TC1070 Datasheet Preview

TC1070 Datasheet

50mA ADJUSTABLE CMOS LDO WITH SHUTDOWN

No Preview Available !

TC1070 pdf
PRELIMINARY INFORMATION
50mA ADJUSTABLE CMOS
LDO WITH SHUTDOWN
TC1070
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
Parameter
Input Operating Voltage
Maximum Output Current
Output Voltage
VREF
VREF/T
VOUT/VIN
VOUT/VOUT
Reference Voltage
VREF Temperature Coefficient
Line Regulation
Load Regulation
VIN – VOUT Dropout Voltage (Note 4)
IGND
IIN
IINSD
PSRR
IOUTSC
VOUT/PD
TSD
TSD
eN
Ground Pin Current
Supply Current
Shutdown Supply Current
Power Supply Rejection Ratio
Output Short Circuit Current
Thermal Regulation
Thermal Shutdown Die Temperature
Thermal Shutdown Hysteresis
Output Noise
SHDN Input
VIH SHDN Input High Threshold
VIL SHDN Input Low Threshold
Test Conditions
Min Typ Max
50
VREF VOUT (VIN –0.05) VR – 2.5%
IL = 0
(Note 1)
Note 2
(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%
1.23
40
0.05
0.5
5
65
95
0
50
64
200
0.04
160
10
260
6.5
VR + 2.5%
0.05
450
VIN = 2.5V to 6.5V
VIN = 2.5V to 6.5V
45 — —
— — 15
Units
V
mA
V
V
ppm/°C
%/V
%
mV
µA
µA
µA
dB
mA
%/W
°C
°C
nV/Hz
%VIN
%VIN
TC1070-01 6/13/97
2


Part Number TC1070
Description 50mA ADJUSTABLE CMOS LDO WITH SHUTDOWN
Maker TelCom Semiconductor
Total Page 12 Pages
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