MA7110 MPOWER | Alldatasheet
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Technical content
Single Phase Hall Effect Smart Fan Driver GENERAL DESCRIPTION The MA7110 is an integrated Hall sensor with H-Bridged output driver designed for brushless DC motor applications. The device includes an on -chip Hall sensor for magnetic sensing, an amplifier that amplifies the Hall voltage, a comparator to provide switching hysteresis for noise rejection, a bi -directional drivers for sinking and driving large current load. To avoid coil burning, rotor-lock shutdown detection circuit shut down the output drive r if the rotor is blocked and then the automatic recovery circuit will try to restart the motor. This function repeats while rotor is blocked. Until the blocking is removed, the motor recovers running normally. FEATURES - On-Chip High sensitivity Hall-effect Sensor - Operating Voltage: 3.3V to 18V - H-Bridge Output Drivers for Single Coil - Thermal Shutdown Protection - Low Output Switching Current Noise - -40°C to 85°C Operating Temperature - Rotor-locked shutdown and automatically restart function - For 5V and 12V DC motor / FAN systems - Low Profile SIP-4L & SOT23-5L/F Package BLOCK DIAGRAM Hall Plate Control Logic Regulator H-bridge MOS Driver VDD DOB DO Amp. GND Thermal shutdown Rotor-locked shutdown and automatically restart Open Drain Output FG(For SOT23-5)
PIN ASSIGNMENT The package of MA7110 is SIP-4L; the pin assignment is given by: RDER/MARKING INFORMATION Order Information Top Marking (SIP-4L) Package Type MA7110 Packing A : Taping XXX P4: SIP-4L Blank: Bag Y Y WW X
7110 Part number
ID code:internal WW:01~52 Year:16=2016 Order Information Top Marking (SOT23-5L/F) Package Type MA7110 Packing A : Taping X X B: SOT23-5L BP: SOT23-5F Blank: Bag H Week: 01~26(A~Z) 27~52(a~z) Year : 6 = 2016 ID Code: InternalD Y W X VDD DO DOB (Top View) SIP-4L GND (Sensor Location) (Top View) 1 2 3 DOBFG VDD GND DO SOT23-5L/F 1.0mm 0.8mm 1.90mm 1.30mm 1 2 3 4 (Sensor Location) (Top View) Name Description VDD Supply Voltage DO Output 1 DOB Output 2 GND Ground. FG Frequency Generation
A BSOLUTE MAXIMUM RATINGS (at TA=25°C) Characteristics Symbol Rating Unit Supply Voltage VCC 20 V Magnetic Flux Density B Unlimited Gauss Output Current Continuous IO 400 mA Hold 800 Peak (start up) 900 Power Dissipation PD 550 mW Storage Temperature Range TSTG -50 to +150 °C Junction Temperature TJ 150 °C Thermal Resistance from Junction to case θJC 49 °C/W Thermal Resistance from Junction to ambient θJA 227 °C/W Recommended Operating Conditions (TA=25 °C) Supply Voltage VCC 3.3 to 18 V Ambient Temperature TA -40 to 85 °C ELECTRICAL CHARACTERISTICS (VDD = 12V, TA = +25°C, unless otherwise noted.) Characteristics Symbol Conditions Min Typ Max Units Average Supply Current IDD no load - 3 - mA On resistance(RPMOS+RNMOS) RDS(ON) 300mA - 2.6 - Ω Locked Protection On Tlrp-on - 0.45 - Sec Locked Protection Off Tlrp-off - 2.6 - Sec Thermal Shutdown Threshold TSHUT 150 - - °C Operating Point BOP 5 30 50 Gauss Releasing Point BRP -50 -30 -5 Gauss Hysteresis BHYS - 60 - Gauss Note: Guaranteed by design.
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 chip surface side of the package BopBrp 0 DOB V BopBrp 0 DO V BBB APPLICATION CIRCUIT 1. Circuit 1 MA7110 1 432 VDD GNDD1 COIL DOB DO VDD NOTE 1. D1 is reversed protection diode, 2. C1 : ECA >=2.2uF, MLCC>=10uF 2. Circuit 2 MA7110 1 432 VDD GND COIL DOB DO Optional 100nF VDD Active Area Depth CHIP 0.7mm Marking side S N SOT L/F N S Marking side CHIP
APPLICATION CIRCUIT 3. Circuit 3 VCC GND Coil FG VDD DODOB 100nF Optional 10k FG Output 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
PACKAGE OUTLINES 1. SIP-4L 14.25m m +/-1.25m m 0.8mm +/-0.1 1.55mm +/-0.2 0.38mm +/-0.03 5.15mm +/-0.17 3.60m m +/-0.15 1.42m m +/-0.1m m 1.27mm 0.41mm +/-0.05 0.48mm
- SOT23-5L L E D b(5x) A DETAL A 1(4x) 2(4x) e GAUGE PLANE C θ θ θ DETAL A Symbol Dimensions in Millimeters Dimensions in Inches A 1.05 - 1.35 0.041 - 0.053 A1 0.05 - 0.15 0.002 - 0.006 b 0.30 - 0.50 0.012 - 0.020 C 0.08 - 0.22 0.003 - 0.009 L 0.30 - 0.60 0.012 - 0.024 θ 0o 4o 8o 0o 4o 8o θ1 5o 10o 15o 5o 10o 15o θ2 5o 10o 15o 5o 10o 15o
- SOT23-5F D E e b c Symbol Dimensions in Millimeters Dimensions in Inches c 0.08 - 0.22 0.003 - 0.009 e1 1.90BSC 0.075BSC e 0.95BSC 0.037BSC