鈥?/div>
Fixed Output Voltages: 1.8V, 2.5V, 3.0V, 3.3V
Very Low Dropout Voltage
Rated 800mA Output Current
High Output Voltage Accuracy
Standard or Custom Output Voltages
Over-Current and Over-Temperature Protection
Space Saving SOT-223 Package
General Description
The TC2117 is a fixed, high accuracy (typically 鹵0.5%)
CMOS low dropout regulator. Designed specifically for
battery operated systems, the TC2117鈥檚 CMOS con-
struction eliminates wasted ground current, signifi-
cantly extending battery life. Total supply current is
typically 80碌A(chǔ) at full load (20 to 60 times lower than in
bipolar regulators).
TC2117 key features include ultra low noise, very low
dropout voltage (typically 450mV at full load), and fast
response to step changes in load. The TC2117 incor-
porates both over-temperature and over-current pro-
tection. The TC2117 is stable with an output capacitor
of only 1碌F and has a maximum output current of
800mA. This device is available in 3-Pin SOT-223, and
3-Pin DDPAK packages.
Applications
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5V to 3.3V Linear Regulator
Portable Computers
Instrumentation
Battery Operated Systems
Linear Post-Regulator for SMPS
Core Voltage Supply for FPGAs, PLDs, CPUs,
DSPs
Typical Application
V
IN
V
IN
V
OUT
C1
1碌F
V
OUT
Device Selection Table
Part Number
Package
Junction
Temperature Range
-40擄C to +125擄C
-40擄C to +125擄C
TC2117
GND
TC2117-xxVDB 3-Pin SOT-223
TC2117-xxVEB
3-Pin DDPAK
Note:
xx indicates output voltages.
Available Output Voltages: 1.8, 2.5, 3.0, 3.3.
Other output voltages are available. Please contact Microchip
Technology Inc. for details.
Package Type
3-Pin SOT-223
Front View
3-Pin DDPAK
Front View
Tab is V
OUT
3
Tab is V
OUT
V
IN
TC2117
V
OUT
1
GND
2
3
2
TC2117
V
OUT
GND
V
IN
2002 Microchip Technology Inc.
1
DS21665B-page 1
漏
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