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參數(shù)資料
| 型號： | NUS2045MN |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Overvoltage Protection IC with Integrated MOSFET |
| 中文描述： | 過壓保護集成電路集成MOSFET |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 138K |
| 代理商： | NUS2045MN |
NUS2045MN, NUS3045MN
http://onsemi.com
2
Figure 1. Simplified Schematic
+
IN
V
CC
GND
CNTRL
OUT
GATE
Schottky
Diode
LOAD
Microprocessor Port
NUSx045
C1
Undervoltage
Lock Out
Logic
FET
Driver
PCH
V
ref
AC/DC Adapter of
Accessory Charger
+
PIN FUNCTION DESCRIPTIONS
Pin #
Symbol
Pin Description
1
IN
This pin senses an external voltage point. If the voltage on this input rises above the overvoltage threshold
(V
), the OUT pin will be driven to within 1.0 V of V
, thus disconnecting the FET. The nominal threshold level
is 6.85 V and this threshold level can be increased with the addition of an external resistor between IN and V
CC
.
2, 10
GND
Circuit Ground
3
CNTRL
This logic signal is used to control the state of OUT and turnon/off the Pchannel MOSFET. A logic High
results in the OUT signal being driven to within 1.0 V of V
CC
which disconnects the FET. If this pin is not used,
the input should be connected to ground.
4, 9
DRAIN
Drain pin of the power MOSFET
5
SRC
Source pin of the power MOSFET
6
GATE
Gate pin of the power MOSFET
7
OUT
This signal drives the gate of a Pchannel MOSFET. It is controlled by the voltage level on IN or the logic state
of the CNTRL input. When an overvoltage event is detected, the OUT pin is driven to within 1.0 V of V
CC
in less
than 1.0 _sec provided that gate and stray capacitance is less than 12 nF.
8
V
CC
Positive Voltage supply. If V
falls below 2.8 V (nom), the OUT pin will be driven to within 1.0 V of V
CC
, thus
disconnecting the Pchannel FET.
OVERVOLTAGE PROTECTION CIRCUIT TRUTH TABLE
IN
CNTRL
OUT
<V
th
L
GND
<V
th
H
V
CC
>V
th
L
V
CC
>V
th
H
V
CC
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NUS2045MNT1 | Overvoltage Protection IC with Integrated MOSFET |
| NUS2045MNT1G | Overvoltage Protection IC with Integrated MOSFET |
| NUS3045MN | Overvoltage Protection IC with Integrated MOSFET |
| NUS3045MNT1 | Overvoltage Protection IC with Integrated MOSFET |
| NUS3045MNT1G | Overvoltage Protection IC with Integrated MOSFET |
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