DataSheet.es    


PDF NIS5452MT2TXG Data sheet ( Hoja de datos )

Número de pieza NIS5452MT2TXG
Descripción +5 Volt Electronic Fuse
Fabricantes ON Semiconductor 
Logotipo ON Semiconductor Logotipo



Hay una vista previa y un enlace de descarga de NIS5452MT2TXG (archivo pdf) en la parte inferior de esta página.


Total 8 Páginas

No Preview Available ! NIS5452MT2TXG Hoja de datos, Descripción, Manual

NIS5452 Series
+5 Volt Electronic Fuse
The NIS5452 series is a cost effective, resettable fuse which can
greatly enhance the reliability of a hard drive or other circuit from both
catastrophic and shutdown failures.
It is designed to buffer the load device from excessive input voltage
which can damage sensitive circuits. It also 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
operation. Two thermal options are available, latching and auto−retry.
Features
Integrated Power Device
Power Device Thermally Protected
No External Current Shunt Required
40 mW Typical
Internal Charge Pump
Internal Undervoltage Lockout Circuit
Internal Overvoltage Clamp
ESD Ratings: Human Body Model (HBM); 2000 V
Machine Model (MM); 200 V
These are Pb−Free Devices and are RoHS Compliant
Typical Applications
Mother Board
Hard Drives
Fan Drives
www.onsemi.com
4.5 AMP, 5 VOLT
ELECTRONIC FUSE
WDFN10
CASE 522AA
MARKING DIAGRAM
1
XXX
AYWG
G
Pin
1−5
6
7
8
9
10
11 (flag)
Function
SOURCE
NC
ILIMIT
Enable/Fault
dv/dt
GND
VCC
XXX = Specific Device Code
A = Assembly Location
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Device
Features
Marking
Package
Shipping
NIS5452MT1TXG
Thermal Latching
Vclamp = 5.85 V, ILIM = 2.1 A @ 18 W
52
WDFN10
(Pb−Free)
3000 / Tape & Reel
NIS5452MT2TXG
Thermal Auto−Retry
Vclamp = 5.85 V, ILIM = 2.1 A @ 18 W
52H
WDFN10
(Pb−Free)
3000 / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2015
June, 2015 − Rev. 0
1
Publication Order Number:
NIS5452/D

1 page




NIS5452MT2TXG pdf
NIS5452 Series
+5 V
+12 V
VCC
SOURCE
LOAD
ILIMIT
NIS545x
ENABLE
dv/dt
GND
ENABLE
VCC
SOURCE
NISxxxx
ENABLE
RS
ILIMIT
GND
dv/dt
LOAD
Figure 4. Common Thermal Shutdown
APPLICATION INFORMATION
Basic Operation
This device is a self−protected, resettable, electronic fuse.
It contains circuits to monitor the input voltage, output
voltage, output current and die temperature.
On application of the input voltage, the device will apply
the input voltage to the load based on the restrictions of the
controlling circuits. The dv/dt of the output voltage will be
controlled by the internal dv/dt circuit. The output voltage
will slew from 0 V to the rated output voltage in 1.4 ms,
unless additional capacitance is added to the dv/dt pin.
The device will remain on as long as the temperature does
not exceed the 175°C limit that is programmed into the chip.
The current limit circuit does not shut down the part but will
reduce the conductivity of the FET to maintain a constant
current at the internally set current limit level. The input
overvoltage clamp also does not shutdown the part, but will
limit the output voltage to the Vout−clamp value in the event
that the input exceeds that level.
An internal charge pump provides bias for the gate voltage
of the internal n−channel power FET and also for the current
limit circuit. The remainder of the control circuitry operates
between the input voltage (VCC) and ground.
Current Limit
The current limit circuit uses a SENSEFET along with a
reference and amplifier to control the peak current in the
device. The SENSEFET allows for a small fraction of the
load current to be measured, which has the advantage of
reducing the losses in the sense resistor as well as increasing
the value and decreasing the power rating of the sense
resistor. Sense resistors are typically in the tens of ohms
range with power ratings of several milliwatts making them
very inexpensive chip resistors.
The current limit circuit has two limiting values, one for
overload events which are defined as the mode of operation
in which the gate is high and the FET is fully enhanced. The
short circuit mode of operation occurs when the device is
actively limiting the current and the gate is at an intermediate
level. For a more detailed description of this circuit please
refer to application note AND8140.
There are two methods of biasing the current limit circuit
for this device. They are shown in the two application
figures. Direct current sensing connects the sense resistor
between the current limit pin and the load. This method
includes the bond wire resistance in the current limit circuit.
This resistance has an impact on the current limit levels for
a given resistor and may vary slightly depending on the
impedance between the sense resistor and the source pins.
The on resistance of the device will be slightly lower in this
configuration since all five source pins are connected in
parallel and therefore, the effective bond wire resistance is
one fifth of the resistance for any given pin.
The other method is Kelvin sensing. This method uses one
of the source pins as the connection for the current sense
resistor. This connection senses the voltage on the die and
therefore any bond wire resistance and external impedance
on the board have no effect on the current limit levels. In this
configuration the on resistance is slightly increased relative
to the direct sense method since only four of the source pins
are used for power.
www.onsemi.com
5

5 Page










PáginasTotal 8 Páginas
PDF Descargar[ Datasheet NIS5452MT2TXG.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
NIS5452MT2TXG+5 Volt Electronic FuseON Semiconductor
ON Semiconductor

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
Analog Devices


DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar