TC1267 データシートの表示（PDF） - Microchip Technology
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TC1267 Datasheet PDF : 14 Pages
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TC1267
2.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
Pin No.
1
2
3
4
5
PIN FUNCTION TABLE
Symbol
VAUX
VIN
GND
VOUT
DR
Description
Auxiliary input supply, nominally 3.3V.
Main input supply for the TC1267, nominally 5V.
Logic and power ground.
LDO 3.3V output.
Driver output for external P-channel MOSFET pass element.
3.0 DETAILED DESCRIPTION
FIGURE 3-1:
APPLICATION CIRCUIT
Q1
TAB IS GND
TC1267
5V
C1
4.7µF
3.3V
C2
0.1µF
C3
0.1µF
C4
4.7µF
3.3V
C5
0.1µF
NOTE: External switch (Q1): use Motorola MGSF1P02ELT1 or equivalent
(PMOS, typical Gate Threshold Voltage = 1V, typical RDS(ON) = 0.4Ω at VGS = 2.5V)
DS21378B-page 4
© 2002 Microchip Technology Inc.
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