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NIS6351 Datasheet

+5 Volt Electronic eFuse

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+5 Volt Electronic eFuse
NIS6351
The NIS6351 is a cost effective, resettable fuse which can greatly
enhance the reliability of a USB application from both catastrophic
and shutdown failures.
It is designed to buffer the load device from excessive input voltage
which can damage sensitive circuits and to protect the input side
circuitry from reverse currents. It includes an overvoltage clamp
circuit that limits the output voltage during transients but does not shut
the unit down, thereby allowing the load circuit to continue its
operation.
Features
85 mW Max RDS(on)
Integrated Reverse Current Protection
Adjustable Output Current Limit Protection with Thermal Shutdown
IEC6100042 Level 4 ESD Protection for Vbus up to ±7 kV
Fast Response Overvoltage Clamp Circuit with Selectable Level
Internal Undervoltage Lockout Circuit
Digital Enable with Separate FLAG for Fault Identification
Integrated Current Monitoring
Both Latching and AutoRetry Options Available
These Devices are PbFree, Halogen Free/BFR Free and are RoHS
Compliant
Typical Applications
Automotive Infotainment
USB 2.0/3.0/3.1 VBUS
USB TypeC PD Charging
Solid State Drives
Mother Boards
www.onsemi.com
WDFNW10, 3 x 3
CASE 515AB
MARKING DIAGRAM
XXXXX
XXXXX
ALYWG
G
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= PbFree Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
VCC
VCC
GND
IMON
Vc_SEL
1
N/C
(Top View)
SRC
SRC
Ilim
EN
FLAG
ORDERING INFORMATION
See detailed ordering, marking and shipping information on
page 8 of this data sheet.
© Semiconductor Components Industries, LLC, 2020
1
August, 2020 Rev. 1
Publication Order Number:
NIS6351/D


  ON Semiconductor Electronic Components Datasheet  

NIS6351 Datasheet

+5 Volt Electronic eFuse

No Preview Available !

D
D+
USB 2.0
Connector
Vbus
GND
EN
FLAG
NIS6351
NIV1161/NIV2161
DVcc
USB
Transceiver
IC
D+
GND
+3.3V
System
Power
CL
22μF
1 μF
RMON
1k
Floating or
Grounded
Vcc
Vcc
GND
Imon
Source
Source
NIS6351
Ilim
EN
Vc_SEL
FLAG
47μF
CIN
Rlim
Enable
FLAG
Figure 1. Typical USB 2.0 Application Circuit
VCC
EN
FLAG
Reverse
Current
+5V
System
Power
Vc_SEL
Thermal
Shutdown
UVLO
Voltage
Clamp
Charge
Pump
Current
Sense
Current
Limit
Source
Imon
Ilim
Figure 2. Block Diagram
GND
PIN FUNCTION DESCRIPTION
Pin No. Pin Name
Description
1, 2
VCC
Positive input voltage to the device. (Low ESR capacitor of minimum 47 mF from VCC to GND is required)
3
GND
Negative input voltage to the device. This is used as the internal reference for the IC.
4
IMON
This pin can be used to monitor the output current by using an external pulldown resistor and decoupling
capacitor.
5
Vc_SEL The Vc_SEL pin allows the overvoltage clamp to be set at either a 5.6 V or 6.2 V minimum.
6
FLAG
If a thermal fault occurs, the voltage on this pin will go to a low state to signal a monitoring circuit that the
device is in thermal shutdown.
7
EN
When this pin is pulled low the eFuse is turned off. It can be used to enable or disable the output of the
device by pulling it to ground using an open drain or open collector device, as it has an internal pullup.
8
Ilim
A resistor between this pin and the source pin sets the overload and short circuit current limit levels.
9, 10
Source
Source of the internal power FET and the output terminal of the fuse
11
N/C (EP) (Exposed Pad) This pad to be used as heatsink only with no electrical connection. It should be connected
to a large area of copper on the PCB, or to the PCB’s GND plane.
www.onsemi.com
2


Part Number NIS6351
Description +5 Volt Electronic eFuse
Maker ON Semiconductor
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NIS6351 Datasheet PDF






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