WSH42FB 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 110°C to prevent the coils be damaged during high temperature and auto-restart at 105°C. 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 90˚C and voltage ranges from 2.8V to 14V. Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2005/9/23 1 WSH42FB Pin Descriptions: (SIP-4L) Name P/I/O Pin# Vcc P 1 DOB O 2 DO O 3 Vss P 4 Description Positive Power Supply Output Pin #1 Output Pin #2 Ground Pin Descriptions: SIP-5L Name P/I/O Pin# Vcc P 1 DOB O 2 DO O 3 FG O 4 Vss P 5 Description Positive Power Supply Output Pin #1 Output Pin #2 Frequency Generator Ground Pin Descriptions: (SOT-25) Name P/I/O Pin# Vcc P 1 Vss P 2 FG O 3 DO O 4 DOB O 5 Description Positive Power Supply Ground Frequency Generator Output Pin #2 Output Pin #1 Absolute Maximum Rating (at Ta=25˚ C) Supply Voltage Vcc -------------------------FG breakdown Voltage Vfg ------------------------Magnetic flux density B -------------------------Reverse Protection Voltage Vr -------------------------Output ON Current (continuous) Ic -------------------------FG ON Current (continuous) If -------------------------Operating Temperature Range Storage Temperature Range Package Power Dissipation Ta -------------------------Ts -------------------------Pd -------------------------- 14V 14V Unlimited 8V 350mA 10mA (-20˚C to +90˚C) (-65˚C to +150˚C) 350mw for SOT-25 500mw for SIP-4L 500mw for SIP-5L Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2005/9/23 2 WSH42FB Electrical Characteristics: (T=+25˚C, Vcc=2.8V to 14V) Characteristic Symbol Test Conditions Min Typ Max Units Supply Voltage Vcc V ─ 2.8 ─ 14 Output Saturation Vout(sat) Vcc=5V, Io=200mA V ─ 0.6 1.5 Vdrive+Vsink Voltage FG Saturation Vfg(sat) Vcc=5V, If=5mA V ─ 0.1 0.4 Voltage B > Bop Output Leakage Ileakage Vcc=5V, B < Brp uA ─ <0.1 10 Current Supply Current Isupply Vcc=5V, Io=200mA mA ─ 27 35 FG “ON” Function Block: Magnetic Characteristics: Characteristics Symbol Quantity Ta= -20˚C to +80˚C Min Typ. Max Operate Point Bop Grade A Grade B 35 50 Release Point Brp Grade A Grade B Hysteresis Window Bop-Brp -70 -100 3 70 100 Gauss -35 -50 Gauss 70 150 Gauss Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2005/9/23 Unit WSH42FB Ordering Information: SIP -4L: WSH42FB-XPA□ SIP -5L: WSH42FB-XPC□ SOT-25: WSH42FB-XPD□ Elec. Grade SIP-4L & SIP-5L: 1: A Grade (70 Gauss) 2: B Grade (100 Gauss) Elec. Grade SOT-25: 1: A Grade (70 Gauss) 2: B Grade (100 Gauss) Test Circuit: 1. SIP-4L Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2005/9/23 4 WSH42FB 2.SIP-5L 3. SOT-25 Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2005/9/23 5 WSH42FB Package Information: 1. SIP-4L Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2005/9/23 6 WSH42FB 2. SIP-5L Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2005/9/23 7 WSH42FB 3. SOT-25 Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2005/9/23 8 WSH42FB Application Circuit: 1. SIP-4L Figure 1. 2.SIP-5L Figure2. Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2005/9/23 9 WSH42FB 3-1. SOT-25 Figure 3. 3-2. SOT-25 Figure 4. Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2005/9/23 10