ncp391 ON Semiconductor, ncp391 Datasheet - Page 3

• Manufacturer Part Number: ncp391
• Description: Ncp391 Positive Overvoltage Protection Controller With Internal Low Ron Nmos Fet
• Manufacturer: ON Semiconductor

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. The R
2. Human Body Model, 100 pF discharged through a 1.5 kW resistor following specification JESD22/A114.
3. Machine Model, 200 pF discharged through all pins following specification JESD22/A115.
PIN FUNCTION DESCRIPTION
MAXIMUM RATINGS
Pin No.
3 or A3
4 or B3
5 or B2
6 or B1
A1, A2
1, 2 or
Minimum Voltage (IN to GND)
Minimum Voltage (All others to GND)
Maximum Voltage (IN to GND)
Maximum Voltage (All others to GND)
Maximum Current (UVLO<V
Maximum Peak Current (t ≤ 1 ms, T
Thermal Resistance, Junction−to−Air (Note 1)
Operating Ambient Temperature Range
Storage Temperature Range
Junction Operating Temperature
ESD Withstand Voltage (IEC 61000−4−2) (input only) when bypassed with 1.0 mF capacitor
Moisture Sensitivity
Human Body Model (HBM), Model = 2 (Note 2)
Machine Model (MM) Model = B (Note 3)
qJA
Symbol
is highly dependent on the PCB heat sink area (connected to pin 7).
FLAG
GND
OUT
EN
IN
Function
OUTPUT
OUTPUT
POWER
INPUT
INPUT
IN
<OVLO)
A
Fault Indication Pin. This pin allows an external system to detect a fault on the IN pins. The FLAG pin
goes low when input voltage exceeds OVLO threshold or drops below UVLO threshold or when TSD
is exceeded. Since the FLAG pin is open drain functionality, an external pull−up resistor to V
be added. (Minimum 10 kW).
Enable Pin. The device enters in shutdown mode when this pin is tied to a high level. In this case the
output is disconnected from the input. To allow normal functionality, the EN pin shall be connected to
GND to a pull down or to a I/O pin. This pin does not have an impact on the fault detection.
Input Voltage Pins. These pins are connected to the Wall Adapoter (AC−DC, Vbus ..). A 1 mF low
ESR ceramic capacitor, or larger, must be connected between these pins and GND, as close as
possible to the DUT. The two IN pins must be connected together to power supply. (See PCB recom-
mendation for the pin7).
Output Voltage Pins. This pin follows IN pins when “no fault” is detected.
Ground
= 85°C)
Rating
http://onsemi.com
3
Description
Imax
Symbol
Vmax
Vmin
Vmax
Vmin
Imax
Vesd
R
MSL
T
T
T
qJA
stg
A
J
peak
in
in
15 Air, 8.0 Contact
−65 to +150
−40 to +85
Level 1
Value
2000
−0.3
−0.3
130
150
200
7.0
2.0
4.0
30
CC
°C/W
must
Unit
°C
°C
°C
kV
V
V
V
V
A
A
V
V
−