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TC1300VUA Datasheet

  • TC1300VUA

  • 300 mA CMOS LDO with Shutdown, Bypass and Independent Delaye...

  • 16頁

  • MICROCHIP   MICROCHIP

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M
Features
鈥?LDO with Integrated Microcontroller Reset
Monitor Functionality
鈥?Low Input Supply Current (80 碌A(chǔ), typical)
鈥?Very Low Dropout Voltage
鈥?10 碌sec (typ.) Wake-Up Time from SHDN
鈥?300 mA Output Current
鈥?Standard or Custom Output and Detected
Voltages
鈥?Power-Saving Shutdown Mode
鈥?Bypass Input for Quiet Operation
鈥?Separate Input for Detected Voltage
鈥?140 msec Minimum RESET Output Duration
鈥?Space-Saving MSOP Package
鈥?Specified Junction Temperature Range:
-40擄C to +125擄C
TC1300
General Description
The TC1300 combines a low dropout regulator and a
microcontroller reset monitor in an 8-Pin MSOP pack-
age. Total supply current is 80 碌A(chǔ) (typical), 20 to 60
times lower than bipolar regulators.
The TC1300 has a precise output with a typical accu-
racy of 鹵0.5%. Other key features include low noise
operation, low dropout voltage and internal feed-
forward compensation for fast response to step
changes in load. The TC1300 has both over-tempera-
ture and over-current protection. When the shutdown
control (SHDN) is low, the regulator output voltage falls
to zero, RESET output remains valid and supply cur-
rent is reduced to 30 碌A(chǔ) (typical). The TC1300 is rated
for 300 mA of output current and stable with a 1 碌F out-
put capacitor.
An active-low RESET is asserted when the detected
voltage (V
DET
) falls below the reset voltage threshold.
The RESET output remains low for 300 msec (typical)
after V
DET
rises above reset threshold. The TC1300
also has a fast wake-up response time (10 碌sec.,
typical) when released from shutdown.
300 mA CMOS LDO with Shutdown, Bypass and
Independent Delayed Reset Function
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Battery-Operated Systems
Portable Computers
Medical Instruments
Pagers
Cellular / GSM / PHS Phones
Typical Application Circuit
RESET
1
RESET
V
DET
V
IN
8
V
DET
Related Literature
鈥?AN765, 鈥淯sing Microchip鈥檚 Micropower LDOs鈥?
DS00765.
鈥?AN766, 鈥淧in-Compatible CMOS Upgrades to
Bipolar LDOs鈥? DS00766.
鈥?AN792, 鈥淎 Method to Determine How Much
Power a SOT23 Can Dissipate in an Application鈥?
DS00792.
V
OUT
2
C
1
1 碌F
3
4
C
BYPASS
470 pF
(Optional)
V
OUT
TC1300
GND
Bypass
7
C
2
1 碌F
6
Battery
+
NC
SHDN 5
Package Type
MSOP
RESET
1
V
OUT
2
GND
3
Bypass
4
TC1300VUA
8
V
DET
7
V
IN
6
NC
5
SHDN
Shutdown Control
(from Power
Control Logic)
錚?/div>
2002 Microchip Technology Inc.
DS21385C-page 1

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