WSH413
Winson reserves the right to make changes to improve reliability or manufacturability.
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
125C to prevent the coils be damaged and auto-restart after cooling down 5~10C
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 100C and
voltage ranges from 2.8V to 36V.
Winson, 2005/10/31
WSH413
Winson reserves the right to make changes to improve reliability or manufacturability.
Name
P/I/O
Pin#
Description
VDD
P
Positive Power Supply
Vss
P
Ground
PS
I
PWM Input Pin
OUT2
O
Output Pin 2
OUT1
O
Output Pin 1
Name
P/I/O
Pin#
Description
Vcc
P
Positive Power Supply
OUT1
O
Output Pin #1
OUT2
O
Output Pin #2
Vss
P
Ground
Supply Voltage
Vcc --------------------------
36V
Output / FG breakdown Voltage Vout/Vfg --------------------- 46V
Magnetic flux density
B
--------------------------
Unlimited
Reverse Protection Voltage
Vr --------------------------
36V
Output Current continuous
Ic
--------------------------
350mA
Hold current Ih ------------------------- 500mA
Peak current Ip ------------------------- 1.0A
Operating Temperature Range
Ta --------------------------
(-20C to +100C)
Storage Temperature Range
Ts --------------------------
(-65C to +150C)
Package Power Dissipation
Pd --------------------------
350mw for SOT-25
500mw for SIP-4L
(T=+25C, Vcc=2.8V to 36V)
Characteristic
Symbol Test Conditions
Min
Typ
Max Units
Supply Voltage
Vcc
V
Output Saturation
Voltage
Vout(sat) Vcc=24V, Ic=200mA
B > Bop
V
Output Leakage
Current
Ileakage Vcc=24V, B < Brp
<
uA
Supply Current
Isupply Vcc=24V, Output &
FG Open
mA
Output / FG Rising
Time
Tr
Vcc=12V, RL=820
CL=20Pf
3.0
us
Output / FG Falling
Time
Tf
Vcc=12V, RL=820
CL=20Pf
us
Winson, 2005/10/31
WSH413
Winson reserves the right to make changes to improve reliability or manufacturability.
Characteristics
Symbol
Quantity
Ta= -20C to +100C
Min Typ. Max
Unit
Operate Point
Bop
Grade A
Grade B
Grade C
25 50
30
70
50 120
Gauss
Release Point
Brp
Grade A
Grade B
Grade C
-70 -25
-100 -30
-120 -50
Gauss
Hysteresis Window
Bop-Brp
40 200 Gauss
SIP- 4L: WSH413-XPA
N
Elec. Grade
SIP-4L :
SOT-25: WSH413-XPD
N
1: A Grade (50 Gauss)
2: B Grade (70 Gauss)
3: C Grade (120 Gauss)
Elec. Grade SOT-25:
N: Non-lead Process
1: A Grade (50 Gauss)
2: B Grade (70 Gauss)
Winson, 2005/10/31
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