参数资料
型号: TC1266VUATR
厂商: Microchip Technology
文件页数: 4/16页
文件大小: 0K
描述: IC REG LDO 3.3V 200MA PCI 8MSOP
标准包装: 2,500
应用: 转换器,PCI 外围设备卡应用
输入电压: 4.3 V ~ 5.5 V
输出数: 1
输出电压: 3.3V
工作温度: -5°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-MSOP
包装: 带卷 (TR)
TC1266
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
Pin No.
PIN FUNCTION TABLE
(8-Pin SOIC)
(8-Pin MSOP)
1
2
3
4
5
6
7
8
Symbol
V IN
NC
V AUX
GND
NC
SENSE
V OUT
D R
Description
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.
3.0
DETAILED DESCRIPTION
FIGURE 3-1:
APPLICATION CIRCUIT
U1
Q1
5V
1
V IN
D R 8
2 NC
TC1266
V OUT 7
3.3V
3.3V
C2
4.7 μ F
C3
0.1 μ F
3 V AUX
4
GND
6
SENSE
NC 5
C4
4.7 μ F
C5
0.1 μ F
C1
0.1 μ F
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)
DS21377B-page 4
2002 Microchip Technology Inc.
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