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Extremely Low Supply Current (50碌A(chǔ), Typ.)
Very Low Dropout Voltage
300mA Output Current
High Output Voltage Accuracy
Standard or Custom Output Voltages
Power Saving Shutdown Mode
Bypass Input for Ultra Quiet Operation
Over Current and Over Temperature Protection
Space-Saving MSOP Package Option
General Description
The TC1107 is a fixed output, high accuracy (typically
鹵0.5%) CMOS upgrade for older (bipolar) low dropout
regulators. Total supply current is typically 50碌A(chǔ) at full
load (20 to 60 times lower than in bipolar regulators).
TC1107 key features include ultra low noise operation
(plus optional Bypass input); very low dropout voltage
(typically 240mV at full load), and fast response to step
changes in load. Supply current is reduced to 0.05碌A(chǔ)
(typical) and V
OUT
falls to zero when the shutdown
input is low.
The TC1107 incorporates both over temperature and
over current protection. The TC1107 is stable with an
output capacitor of only 1碌F and has a maximum
output current of 300mA.
Applications
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Battery Operated Systems
Portable Computers
Medical Instruments
Instrumentation
Cellular/GSM/PHS Phones
Linear Post-Regulators for SMPS
Pagers
Typical Application
V
OUT
1
+
C1
1碌F
2
V
OUT
V
IN
8
V
IN
7
GND
NC
Device Selection Table
Part Number
TC1107-xxVOA
TC1107-xxVUA
Package
8-Pin SOIC
8-Pin MSOP
Junction
Temp. Range
-40擄C to +125擄C
-40擄C to +125擄C
3
TC1107
NC
NC
6
4
Bypass
SHDN
5
NOTE:
xx indicates output voltages
Available Output Voltages: 2.5, 2.8, 3.0, 3.3, 5.0.
Other output voltages are available. Please contact Microchip
Technology Inc. for details.
C
BYPASS
470pF
(Optional)
Shutdown Control
(from Power Control Logic)
Package Type
8-Pin MSOP
V
OUT
GND
NC
Bypass
1
2
3
4
8
7
6
5
8-Pin SOIC
V
IN
NC
NC
SHDN
V
OUT
1
GND 2
NC 3
Bypass 4
TC1107VOA
8 V
IN
7 NC
6 NC
5 SHDN
TC1107VUA
2002 Microchip Technology Inc.
DS21356B-page 1
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