WSH520
Low voltage Single Coil Hall Effect IC with
Complementary Output Drivers
Features:
Operate from
1.8V
to 4.5V supply voltage.
On-chip Hall sensor.
Internal thermal compensation circuit enable operation in a wide range
temperature without loss of sensitivity.
Output sinking capability up to 200mA for driving large load.
Available in rugged low profile SOT-25 packages.
General Description:
WSH520 is designed to integrate Hall sensor with complementary output drivers on
the same chip, it is suitable for single coil DC brushless motors. It includes a
temperature compensated circuit, a differential amplifier, a Hysteresis controller,
complementary bi-direction drivers for sinking and driving large current load.
WSH520 are rated for operation over temperature range from 20 C to 75C and
voltage ranges from 1.8V to 4.5V.
Pin Descriptions: (SOT-25)
Name
P/I/O
Pin#
Description
Vcc P
1
Positive Power Supply
Vss
P
2
Ground
DO
O
3
Output Pin #2
DOB
O
4
Output Pin #1
Absolute Maximum Rating (at Ta=25 C)
Supply
Voltage Vcc
--------------------------
5V
Magnetic flux density
B
--------------------------
Unlimited
Output ON Current (continuous) Ic -------------------------- 220mA
Operating Temperature Range
Ta -------------------------- (-20C to +75C)
Storage Temperature Range
Ts -------------------------- (-65C to +150C)
Package Power Dissipation Pd
--------------------------
350mw for SOT-25
Winson reserves the right to make changes to improve reliability or manufacturability.
Winson, April.2003
WSH520
Electrical Characteristics: (T=+25C, Vcc=1.8V to 4.5V)
Characteristic
Symbol Test Conditions
Min
Typ Max Units
Supply Voltage
Vcc
1.8
4.5
V
Output Saturation
Voltage
Vout(sat)
Vdrive+Vsink
Vcc=3V, Io=150mA
0.6
1.0
V
Output Leakage
Current
Ileakage Vcc=3V, B < Brp
<0.1
10
uA
Supply Current
Isupply Vcc=3V, Io=150mA
10
20
mA
Function Block:
Winson reserves the right to make changes to improve reliability or manufacturability.
Winson, April.2003
WSH520
Magnetic Characteristics:
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
Ordering Information:
SOT-25: WSH520-XPD Elec. Grade
SOT-25:
1: A Grade (70 Gauss)
2: B Grade (100 Gauss)
Test Circuit:
Winson reserves the right to make changes to improve reliability or manufacturability.
Winson, April.2003
WSH520
1. SOT-25:
Package Information:
1. SOT-25
Winson reserves the right to make changes to improve reliability or manufacturability.
Winson, April.2003
WSH520
Application Circuit:
1-1. SOT-25
Winson reserves the right to make changes to improve reliability or manufacturability.
Winson, April.2003
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