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TC1266VOA Folha de dados(PDF) 4 Page - Microchip Technology

Nome de Peças TC1266VOA
Descrição Electrónicos  200mA PCI LDO
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Fabricante Electrônico  MICROCHIP [Microchip Technology]
Página de início  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC1266VOA Folha de dados(HTML) 4 Page - Microchip Technology

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TC1266
DS21377B-page 4
© 2002 Microchip Technology Inc.
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
3.0
DETAILED DESCRIPTION
FIGURE 3-1:
APPLICATION CIRCUIT
Pin No.
(8-Pin SOIC)
(8-Pin MSOP)
Symbol
Description
1VIN
Main input supply for the TC1266, nominally 5V.
2
NC
Not connected.
3VAUX
Auxiliary input supply, nominally 3.3V.
4
GND
Logic and power ground.
5
NC
Not connected.
6
SENSE
Sense pin for VOUT.Connect to VOUT at theloadtominimizevoltage drop across PCB traces.
7VOUT
LDO 3.3V output.
8DR
Driver output for external P-channel MOSFET pass element.
VIN
NC
VAUX
GND
NC
SENSE
VOUT
DR
U1
TC1266
1
2
3
4
5
6
7
8
NOTE: External switch (Q1): use Motorola MGSF1P02ELT1 or equivalent
(PMOS, typical Gate Threshold Voltage = 1V, typical RDS(ON) = 0.4Ω at VGS = 2.5V)
5V
3.3V
Q1
C1
0.1
µF
C2
4.7
µF
C3
0.1
µF
C4
4.7
µF
C5
0.1
µF
3.3V


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