WSH416

WSH416
Hall Effect Sensor IC with Thermal Protection and
Auto Restart Function
Features:
 Operate from 2.8V to 20V supply voltage.
 On-chip Hall sensor.
 Internal bandgap regulator allows temperature compensated operations and a
wide operating voltage range.
 High output sinking capability up to 1.0A for driving large load.
 Lower current change rate reduces the peak output voltages during switching.
 Available in rugged low profile SIP-4L packages.
 Built-in protection diode for reverse power supply fault.
 Built-in thermal protection and auto-restart function.
General Description:
WSH416 is designed to integrate Hall sensor with complementary output drivers and
frequency generator together on the same chip, it is suitable for high speed and large
DC brushless motors. It includes a temperature compensated voltage regulator, a
differential amplifier, a Hysteresis controller, two open-collector output drivers
capable of sinking 1.0A current load . An on-chip protection diode is implemented to
prevent reverse power fault. And built-in thermal lock protection and auto-restart
function is suitable for super high speed fan. It can replace the function of lock
protection and auto restart function. The power will be shutdown automatically at
125°C to prevent the coils be damaged and atuo-restart after cooling down.
The temperature-dependent bias increases the supply voltage of the hall plates and
adjusts the switching points to the decreasing induction of magnets at higher
temperatures. Subsequently, the open collector output switches to the appropriate state.
WSH416 are rated for operation over temperature range from –40˚ C to 100˚C and
voltage ranges from 2.8V to 20V.
Pin Descriptions: SIP-4L
Name
P/I/O
Pin#
Vcc
P
1
OUT1
O
2
OUT2
O
3
Vss
P
4
Description
Positive Power Supply
Output Pin #1
Output Pin #2
Ground
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/1/23
1
WSH416
Absolute Maximum Rating (at Ta=25˚ C)
Supply Voltage
Vcc -------------------------- 24V
Output breakdown Voltage
Vout -------------------------- 38V
Magnetic flux density
B -------------------------- Unlimited
Reverse Protection Voltage
Vr -------------------------- 24V
Output Current continuous
Ic -------------------------- 600mA
Hold current
Ih
------------------------ 1.0A
Peak current
Ip
------------------------- 1.5A
Operating Temperature Range
Storage Temperature Range
Package Power Dissipation
Ta -------------------------Ts -------------------------Pd --------------------------
(-40˚C to +100˚C)
(-65˚C to +150˚C)
500mw for SIP-4L
Electrical Characteristics:
(T=+25˚C, Vcc=2.8V to 20V)
Characteristic
Symbol Test Conditions
Min
Typ Max Units
Supply Voltage
Vcc ─
V
2.8
─
20
Output Saturation
Vout(sat Vcc=20V, Ic=200mA
V
─
0.12
0.4
Voltage
)
B > Bop
Output Leakage
Ileakage Vcc=20V, B < Brp
uA
─
<0.1
10
Current
Supply Current
Isupply Vcc=12V, Output
mA
─
25
30
Open
Output Rising Time
Tr
3.0
us
Vcc=12V, RL=820Ω
─
10
CL=20Pf
Output Falling Time
Tf
us
Vcc=12V, RL=820Ω
─
0.3
1.5
CL=20Pf
Output Time
Us
△t Vcc=12V, RL=820Ω
─
0.3
3
Differential
CL=20Pf
Temperature Protection
Tp
─
125
─
℃
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/1/23
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WSH416
Function Block:
Magnetic Characteristics:
Characteristics
Symbol
Operate Point
Bop
Release Point
Brp
Hysteresis Window
Quantity
Grade A
Grade B
Grade C
Grade A
Grade B
Grade C
Bop-Brp
Ta= -20˚C to +100˚C
Typ.
25
30
50
-50
-25
-70
-30
-120
-50
Min
40
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/1/23
3
Unit
Max
50
70
120
Gauss
Gauss
200 Gauss
WSH416
Package Information:
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/1/23
4
WSH416
Application Circuit:
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/1/23
5