WSH413

WSH413
Hall Effect Sensor IC with Thermal Lock Protection
and Auto Restart Function
Features:
 Operate from 2.8V to 36V 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 500mA for driving large load.
 Lower current change rate reduces the peak output voltages during switching.
 Available in rugged low profile SOT-25 , SIP-4L packages.
 Built-in PWM Speed Control function .
 Built-in protection diode for reverse power supply fault.
 Built-in thermal lock protection and auto-restart function.
General Description:
WSH413 is designed to integrate Hall sensor with complementary output drivers and
frequency generator together on the same chip, it is suitable for speed measurement,
revolution counting, positioning, and DC brushless motors. It includes a temperature
compensated voltage regulator, a differential amplifier, a Hysteresis controller, two
Darlington output drivers capable of sinking 500mA current load and an PWM signal
input pin capable of doing speed control. 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 auto-restart after cooling down 5~10°C
when thermal protected was activated .
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.
WSH413 are rated for operation over temperature range from –20˚ C to 100˚C and
voltage ranges from 2.8V to 36V.
Pin Descriptions: SOT-25
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/5
WSH413
Name
VDD
Vss
PS
OUT2
OUT1
P/I/O
P
P
I
O
O
Pin#
1
2
3
4
5
Description
Positive Power Supply
Ground
PWM Input Pin
Output Pin 2
Output Pin 1
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
Absolute Maximum Rating (at Ta=25˚ C)
Supply Voltage
Vcc -------------------------Output / FG breakdown Voltage Vout/Vfg --------------------Magnetic flux density
Reverse Protection Voltage
Output Current continuous
Hold current
Peak current
B
Vr
Ic
Ih
Ip
----------------------------------------------------------------------------------------------------------------------------
Operating Temperature Range
Storage Temperature Range
Package Power Dissipation
Ta -------------------------Ts -------------------------Pd --------------------------
36V
46V
Unlimited
36V
350mA
500mA
1.0A
(-20˚C to +100˚C)
(-65˚C to +150˚C)
350mw for SOT-25
500mw for SIP-4L
Electrical Characteristics:
(T=+25˚C, Vcc=2.8V to 36V)
Characteristic
Symbol Test Conditions
Min
Typ Max Units
Supply Voltage
Vcc
V
─
2.8
─
36
Output Saturation Vout(sat) Vcc=24V, Ic=200mA ─
V
0.75
1.0
Voltage
B > Bop
Output Leakage
Ileakage Vcc=24V, B < Brp
uA
─
<0.1
10
Current
Supply Current
Isupply Vcc=24V, Output &
mA
─
5
10
FG Open
Output / FG Rising
Tr
3.0
us
Vcc=12V, RL=820Ω ─
10
Time
CL=20Pf
Output / FG Falling
Tf
us
Vcc=12V, RL=820Ω ─
0.3
1.5
Time
CL=20Pf
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/5
WSH413
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
Ta= -20˚C to +100˚C
Min
Typ.
25
30
50
-70
-25
-100
-30
-120
-50
Bop-Brp
40
Ordering Information:
SIP- 4L: WSH413-XPAN□
Elec. Grade
SOT-25: WSH413-XPDN□
SIP-4L :
1: A Grade (50 Gauss)
Elec. Grade
N: Non-lead Process
2: B Grade (70 Gauss)
3: C Grade (120 Gauss)
SOT-25:
1: A Grade (50 Gauss)
2: B Grade (70 Gauss)
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/5
Unit
Max
50
70
120
Gauss
Gauss
200 Gauss
WSH413
Test Circuit:
SIP-4L
SOT25
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/5
WSH413
Package Information:
SOT-25
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/5
WSH413
SIP-4L
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/5
WSH413
Application Circuit:
SOT-25
Figure 1.
SIP-4L
Figure 2.
Put additional resistor between Power line and Pin 1 of WSH413 can greatly
incerease the surge voltage protection ability of system.
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/5