参数资料
型号: TC1270AMAVRCTR
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4
封装: LEAD FREE, PLASTIC, SOT-143, 4 PIN
文件页数: 9/48页
文件大小: 541K
代理商: TC1270AMAVRCTR
2007-2011 Microchip Technology Inc.
DS22035D-page 17
TC1270A/70AN/71A
3.0
PIN DESCRIPTIONS
Descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
PINOUT DESCRIPTION
Pin Number
Sym
Pin
Standard Function
TC1270A
(Push-Pull,
active-low)
TC1270AN
(Open-Drain,
active-low)
TC1271A
(Push-Pull,
active-high)
SO
T
-23
-5
SOT
-14
3-4
SO
T
-23
-5
SOT
-14
3-4
SO
T
-23
-5
SOT
-14
3-4
Type
Buffer /
Driver
51
1
5
1
VSS
Power
Ground
42
—RST
O
Push-
Pull
Reset output (Push-Pull), active-low
H = VDD > VTRIP, Reset pin is inactive
(after Reset Delay Timer completes)
L = VDD < VTRIP, Reset pin is active
Goes active (Low) if one of these conditions
occurs:
1.
If VDD falls below the selected Reset
voltage threshold.
2.
If the MR pin is forced low.
3.
During power-up.
—4
2
—RST
O
Open-
Drain
Reset output (Open-Drain), active-low
Float = VDD > VTRIP, Reset pin is inactive
(after Reset Delay Timer completes)
L = VDD < VTRIP, Reset pin is active
Goes active (Low) if one of these conditions
occurs:
1.
If VDD falls below the selected Reset
voltage threshold.
2.
If the MR pin is forced low.
3.
During power-up.
4
2
RST
O
Push-
Pull
Reset output (Push-Pull), active-high
H = VDD < VTRIP, Reset pin is active
L = VDD > VTRIP, Reset pin is inactive
(after Reset Delay Timer completes)
Goes active (High) if one of these conditions
occurs:
1.
If VDD falls below the selected Reset
voltage threshold.
2.
If the MR pin is forced low.
3.
During power-up.
Note 1:
The MR pin has an internal weak pull-up (18.5 k
typical).
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