MA276 MPOWER | Alldatasheet
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Major Power Technology Co., Ltd. Rev.1 Aug.05, 2013 mplementary Output Hall Effect Fan Driver GENERAL DESCRIPTION MA276 are integrated Hall sensors with output drivers, ma inly designed for electronic commutation of brush-less DC Fan. This IC internally includes the regulator, protecting diode, Hall plate, amplifier, comparator, and a pair of com plementary open-Drain outputs (DO, DOB). While the magnetic flux density (B) is larger than operat e point (Bop), DO will turn on (low), and meanwhile DOB will turn off (high). Each ou tput is latched until B is lower than release point (Brp), and then DO, DOB transfer each state. For DC fan application, sometimes need to test power reverse connection condition. Internal diode only protects chip-side but not for coil-side. If necessary, add one ext ernal diode to block the reverse current from coil-side. FEATURES - On-chip Hall effect sensor with two different sensitivity a nd hysteresis settings - Built-in protecting diode only for chip reverse power c onnecting - -40°C to 85°C operating temperature - Low Profile SIP-4L Package( Green and Lead Free ) BLOCK DIAGRAM
Major Power Technology Co., Ltd. Rev.1 Aug.05, 2013 PIN ASSIGNMENT The package of MA276 is SIP-4L; the pin assignment is given by: RDER/MARKING INFORMATION Order Information Top Marking Y Y WW X
276 Part number
ID code:internal WW:01~52 Year:13=2013 A BSOLUTE MAXIMUM RATINGS (at TA=25°C) Characteristics Symbol Rating Unit Supply Voltage VCC 20 V Reverse VCC Polarity Voltage VRCC -20 V Magnetic Flux Density B Unlimited Gauss Output Current Continuous IO 400 mAHold 500 Peak (start up) 700 Power Dissipation PD 550 mW Storage Temperature Range TSTG -65 to +150 °C Thermal Resistance from Junction to case θJC 49 °C/W Thermal Resistance from Junction to ambient θJA 227 °C/W Ambient Temperature TA -40 to 85 °C Name Description VDD Supply Voltage DO Output 1 DOB Output 2 GND Ground.
Major Power Technology Co., Ltd. Rev.1 Aug.05, 2013 ELECTRICAL CHARACTERISTICS (VDD = 12V, TA = +25°C, unless otherwise noted.) Characteristics Symbol Conditions Min Typ Max Units Supply Voltage VDD Operating 3.3 - 18 V Supply current IDD Operating - 3.5 5 mA Output Leakage Current IOFF VOUT=12V - < 0.1 10 μA Output On resistance RDS(ON) IOUT=300mA - 1.4 - Ω Output Clamping Voltage VZ DO, DOB - 32 - V Thermal shutdown Temp TSD 150 - - °C Thermal Shutdown Hysteresis TSH - 30 - °C Magnetic (1mT=10 Gauss) Operate Point BOP 5 25 50 Gauss Release Point BRP -50 -25 -5 Gauss Hysteresis BHYS - 50 - Gauss Driver output vs. magnetic pole Characteristics Test Conditions DO DOB North pole B < Brp High Low South pole B > Bop Low High Note: The magnetic pole is applied facing the branded side of the package BopBrp 0 DOB V BopBrp 0 DO V B BB
Major Power Technology Co., Ltd. Rev.1 Aug.05, 2013 APPLICATION CIRCUIT 12V brush-less DC fan Note1: C1 (Optional) is for power stabilization, Recommended E-Cap 1uF/50V Note2: D1 (Optional) is a reverse protect diode. PERFORMANCE CHARACTERISTICS TA (C) 25 50 60 70 80 85 90 95 100 Pd (mW) 550 440 396 352 308 286 264 242 220 TA (C) 105 110 115 120 125 130 135 140 150 Pd (mW) 198 176 154 132 110 88 66 44 0 P o w e r D is s ip a tio n C u r v e 1 0 0 2 0 0 3 0 0 4 0 0 5 0 0 6 0 0 0 2 5 5 0 7 5 1 0 0 1 2 5 1 5 0 T a ( 。 C ) P d ( m W )
Major Power Technology Co., Ltd. Rev.1 Aug.05, 2013 PACKAGE OUTLINES Symbol Dimensions in Millimeters Dimensions in Inches