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WS4620H PDF даташит

Спецификация WS4620H изготовлена ​​​​«WillSEMI» и имеет функцию, называемую «Adjusted Current Limit Over-Voltage Protection Load Switch».

Детали детали

Номер произв WS4620H
Описание Adjusted Current Limit Over-Voltage Protection Load Switch
Производители WillSEMI
логотип WillSEMI логотип 

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WS4620H Даташит, Описание, Даташиты
WS4620H
WS4620H
Adjusted Current Limit Over-Voltage
Protection Load Switch
www.sh-willsemi.com
Descriptions
The WS4620H features a Low Ron internal 30V high
voltage NMOS that can handle absolute maximum of
32VDC. An internal clamp is capable of shunting surge
voltage 60V, protecting downstream components and
enhancing system robustness. The WS4620H features
over-voltage protection that powers down the internal
NMOS if the input voltage exceeds the OVP threshold.
The over current limit and over-temperature function
can also protect the devices and the over current limit
threshold is adjustable with the external RSET
resistance. Exceptionally low off-state current
facilitates compliance with standby power requirement.
VIN 1
VIN 2
EN 3
FLAG 4
Expose
PAD
8 VSS
7 VOUT
6 VOUT
5 RSET
MSOP8-EP
Pin Configuration (Top View)
The WS4620H is available in MSOP8-EP package.
Standard product is Pb-free and Halogen-free.
Features
Wide Input Voltage Range : 4.5V~30 V
Integrated 150mΩ(@VIN=12V) NMOSFET
Adjustable Current Limit : 0.6A~2A
Over Voltage Protection Fixed: 15.8V
Fast Over-Voltage Response Time : 1us(max)
Thermal Shutdown and Short Circuit Protection
Under Voltage Protection
Integrated Surge Protection up to 60V
ESD Protection
-Human Body Model:±4kV(min)
Pb-Free Package: MSOP8-EP
Applications
Automotive Devices
Tablet Computers
Peripherals
WLSI
4620
WHYW
4620
YW
= Device code
= Month code
Order information
Device
Package
Shipping
WS4620H-8/TR MSOP8-EP 3000/Reel&Tape
Will Semiconductor Ltd.
1 Nov, 2016 - Rev. 1.4









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WS4620H Даташит, Описание, Даташиты
Typical Applications
VIN
Cin
1uF
To MCU
1,2
VIN
3.3V
RPU
100K
3
EN
4
FLAG
6,7
VOUT
5
RSET
8
GND
RSET
68K
VOUT
Cout
4.7uF
WS4620H
Pin Descriptions
Pin Number Symbol
1,2 VIN
3 EN
4 FLAG
5 RSET
6,7 VOUT
8 VSS
Descriptions
Input Supply Voltage
Enable Pin, Active Low
Fault Flag Output Pin, Open Drain Structure, Active Low
Current Limit Threshold Set Pin
Output Voltage
Ground
Block Diagram
VIN
Surge
Protection
OVP
Charge Pump
EN Driver
Current
Sense
Current
Limit
ENB
GND
Thermal
Protection
VOUT
RSET
FLAG
Will Semiconductor Ltd.
2 Nov, 2016 - Rev. 1.4









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WS4620H Даташит, Описание, Даташиты
Absolute maximum ratings
Parameter
VIN pin voltage range
VOUT to GND
EN pin voltage range
Junction temperature
Lead temperature(Soldering, 10s)
Storage temperature
ESD Ratings
WS4620H
Symbol
VIN
VOUT
VEN
TJ
TL
Tstg
HBM
MM
Value
-0.332.0
-0.3~ VIN+0.3
-0.3~6.5
-40~150
260
-55 ~ 150
4000
300
Unit
V
V
V
oC
oC
oC
V
V
These are stress ratings only. Stresses exceeding the range specified under “Absolute Maximum Ratings” may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the
specification is not implied and prolonged exposure to extreme conditions may affect device reliability.
Recommend Operating Conditions
Parameter
VIN supply input voltage range
Operating ambient temperature
Thermal Resistance
Symbol
Vcc
TA
RθJA
Value
4.513.5
-4085
80
Unit
V
oC
oC/W
Application Information
Over Voltage Protection
The OVP and UVP threshold Voltage of the WS4620H is fixed at 15.8V and 6.5V.
Current Limit Protection and Output Short Protection
The current limit range is 0.6A to 2A that is set by the external RSET resistance. When the output voltage is shorted,
the inrush current can be suppressed by the internal short protection acceleration circuit. The Equation (1) can
produce the desired current limit threshold and resistor values.
Output Discharge
Ioc = 68K / Rset
(1)
When the power NMOS is shut down, the NMOS in the output can pull down the output capacitor voltage which may
destroy the load if existed.
Fault Flag Output
When fault states such as OVP, UVP, OCP and OTP are existed, the FLAG pin is low .
Will Semiconductor Ltd.
3 Nov, 2016 - Rev. 1.4










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WS4620HAdjusted Current Limit Over-Voltage Protection Load SwitchWillSEMI
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