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TC1302A Arkusz danych(PDF) 10 Page - Microchip Technology

Numer części TC1302A
Szczegółowy opis  Low Quiescent Current Dual Output LDO
Download  26 Pages
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Producent  MICROCHIP [Microchip Technology]
Strona internetowa  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC1302A Arkusz danych(HTML) 10 Page - Microchip Technology

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TC1302A/B
DS21333C-page 10
 2003-2012 Microchip Technology Inc.
3.0
TC1302A PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
TC1302A PIN FUNCTION TABLE
3.1
Regulated Output Voltage #1
(VOUT1)
Connect VOUT1 to the positive side of the VOUT1
capacitor and load. Capable of 300 mA maximum
output current. VOUT1 output is available when VIN is
available; there is no pin to turn it OFF. See TC1302B
if ON/OFF control of VOUT1 is desired.
3.2
Circuit Ground Pin (GND)
Connect GND to the negative side of the input and
output capacitor. Only the LDO internal circuitry bias
current flows out of this pin (200 µA maximum).
3.3
Reference Bypass Input
By connecting an external 10 nF capacitor (typical) to
the Bypass Input, both outputs (VOUT1 and VOUT2) will
have less noise and improved Power Supply Ripple
Rejection (PSRR) performance. The LDO output
voltage start-up time will increase with the addition of
an external bypass capacitor. By leaving this pin
unconnected, the start-up time will be minimized.
3.4
Output Voltage #2 Shutdown
(SHDN2)
ON/OFF control is performed by connecting SHDN2 to
its proper level. When the input of this pin is connected
to a voltage less than 15% of VIN, VOUT2 will be OFF. If
this pin is connected to a voltage that is greater than
45% of VIN, VOUT2 will be turned ON.
3.5
Regulated Output Voltage #2
(VOUT2)
Connect VOUT2 to the positive side of the VOUT2
capacitor and load. This pin is capable of a maximum
output current of 150 mA. VOUT2 can be turned ON and
OFF using SHDN2.
3.6
Unregulated Input Voltage Pin
(VIN)
Connect the unregulated input voltage source to VIN. If
the input voltage source is located more than several
inches away or is a battery, a typical input capacitance
of 1 µF to 4.7 µF is recommended.
Pin No.
Name
Function
1
NC
No connect.
2VOUT1
Regulated output voltage #1, capable of 300 mA.
3
GND
Circuit ground pin.
4
Bypass
Internal reference bypass pin. A 10 nF external capacitor can be used to further reduce
output noise and improve PSRR performance.
5
SHDN2
Output #2 shutdown control input.
6VOUT2
Regulated output voltage #2, capable of 150 mA.
7VIN
Unregulated input voltage pin.
8
NC
No connect.


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