WSH42FB
Winson reserves the right to make changes to improve reliability or manufacturability.
Winson, 2005/9/23 1
Single Coil Hall Effect IC with Thermal Lock
Protection and Auto-Restart
Features:
Operate from 2.8V to 14V supply voltage.
On-chip Hall sensor.
Internal bandgap regulator allows temperature compensated operations and a
wide operating voltage range.
Output sinking capability up to 350mA for driving large load.
Lower current change rate reduces the peak output voltages during switching.
Available in rugged low profile SIP-4L,SIP-5L and SOT-25 packages.
Built-in Frequency Generator.
Built-in protection diode for reverse power supply fault.
Prevent the fail situation during lock status or high temperature
Built-in
thermal lock protection
and
auto-restart
function.
General Description:
WSH42FB is designed to integrate Hall sensor with two push-pull output drivers and
frequency generator together on the same chip, it is suitable for single coil DC
brushless motors. It includes a temperature compensated voltage regulator, a
differential amplifier, a Hysteresis controller, complementary bi-direction drivers for
sinking and driving large current load and an open-collector frequency generator
capable of sinking 10mA current load. An on-chip protection diode is implemented to
prevent reverse power fault. It also includes coil parts. You can eliminate all the
external components for the function of FG and reverse protection diode. And
built-in
thermal lock protection
and
auto-restart
function will automatically shutdown
power at 110C to prevent the coils be damaged during high temperature and
auto-restart at 105C. It can replace the function of lock protection and auto-restart at
low cost.
WSH42FB are rated for operation over temperature range from 20 C to 90C and
voltage ranges from 2.8V to 14V.
WSH42FB
Winson reserves the right to make changes to improve reliability or manufacturability.
Winson, 2005/9/23 2
Name
P/I/O
Pin#
Description
Vcc
P
Positive Power Supply
DOB
O
Output Pin #1
DO
O
Output Pin #2
Vss
P
Ground
Name
P/I/O
Pin#
Description
Vcc
P
Positive Power Supply
DOB
O
Output Pin #1
DO
O
Output Pin #2
FG
O
Frequency Generator
Vss
P
Ground
Name
P/I/O
Pin#
Description
Vcc
P
Positive Power Supply
Vss
P
Ground
FG
O
Frequency Generator
DO
O
Output Pin #2
DOB
O
Output Pin #1
Supply Voltage
Vcc --------------------------
14V
FG breakdown Voltage
Vfg ------------------------- 14V
Magnetic flux density
B
--------------------------
Unlimited
Reverse Protection Voltage
Vr --------------------------
8V
Output ON Current (continuous) Ic --------------------------
350mA
FG ON Current (continuous) If -------------------------- 10mA
Operating Temperature Range
Ta --------------------------
(-20C to +90C)
Storage Temperature Range
Ts --------------------------
(-65C to +150C)
Package Power Dissipation
Pd --------------------------
350mw for SOT-25
500mw for SIP-4L
500mw for SIP-5L
WSH42FB
Winson reserves the right to make changes to improve reliability or manufacturability.
Winson, 2005/9/23 3
(T=+25C, Vcc=2.8V to 14V)
Characteristic
Symbol Test Conditions
Min
Typ
Max Units
Supply Voltage
Vcc
V
Output Saturation
Voltage
Vout(sat)
Vdrive+Vsink
Vcc=5V, Io=200mA
V
FG Saturation
Voltage
Vfg(sat) Vcc=5V, If=5mA
B > Bop
V
Output Leakage
Current
Ileakage Vcc=5V, B < Brp
<
uA
Supply Current
Isupply Vcc=5V, Io=200mA
FG "ON"
mA
Characteristics
Symbol
Quantity
Ta= -20C to +80C
Min Typ. Max
Unit
Operate Point
Bop
Grade A
Grade B
35 70
50 100 Gauss
Release Point
Brp
Grade A
Grade B
-70 -35
-100 -50
Gauss
Hysteresis Window
Bop-Brp
70 150 Gauss
WSH42FB
Winson reserves the right to make changes to improve reliability or manufacturability.
Winson, 2005/9/23 4
SIP -4L: WSH42FB-XPA Elec. Grade
SIP -5L: WSH42FB-XPC
SIP-4L & SIP-5L:
SOT-25: WSH42FB-XPD
1: A Grade (70 Gauss)
2: B Grade (100 Gauss)
SOT-25:
1: A Grade (70 Gauss)
2: B Grade (100 Gauss)
Elec. Grade
1. SIP-4L
WSH42FB
Winson reserves the right to make changes to improve reliability or manufacturability.
Winson, 2005/9/23 5
2.SIP-5L
3. SOT-25
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