參數(shù)資料
型號: TC1266VUA
廠商: Microchip Technology Inc.
元件分類: 基準電壓源/電流源
英文描述: 200mA PCI LDO
中文描述: 200mA的LDO穩(wěn)壓器的PCI
文件頁數(shù): 4/16頁
文件大小: 526K
代理商: TC1266VUA
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
1
2
3
4
5
6
7
8
V
IN
NC
V
AUX
GND
NC
SENSE
V
OUT
D
R
Main input supply for the TC1266, nominally 5V.
Not connected.
Auxiliary input supply, nominally 3.3V.
Logic and power ground.
Not connected.
Sense pin for V
OUT
. Connect to V
OUT
at the load to minimize voltage drop across PCB traces.
LDO 3.3V output.
Driver output for external P-channel MOSFET pass element.
V
IN
NC
V
AUX
GND
NC
SENSE
V
OUT
D
R
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 R
DS(ON)
= 0.4
at VGS = 2.5V)
5V
3.3V
Q1
C1
0.1
μ
F
C2
4.7
μ
F
C3
0.1
μ
F
C4
4.7
μ
F
C5
0.1
μ
F
3.3V
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