A4477 MAT | Alldatasheet

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Technical content

Single Phase Fan Motor Driver IC 041423 www.masteranalog.com Page 1 of 3 RD-30021 Rev 1.30 4477 has thermal shut-down and short protection functions of bi-direction H type output for single phase all in one driver IC in DC fan market.  Absolute Maximum Ratings At (TA=25℃) Characteristics Values Unit Supply Voltage, (VDD) 24 V Output ”on” Current, (IO) 400(Average) mA 900(Peak) mA Operating Temperature Range, (TA) -40 ~+125 ℃ Storage Temperature Range, (TS) -65 ~ +150 ℃ Package Power Dissipation, (PD) 550/650 mW  Functional Block Diagram REG Amp Thermal shut-down VDD DoB GND Hall Sensor Do FG Control Logic  Electrical Specifications DC Operating Parameters： T A=+25℃, VDD=12.0V Parameters Test Conditions Min Typ Max Units Supply V oltage, (VDD) Operating 3.5 20.0 V Supply Current, (IDD) No Load 12V 3.0 5.0 mA Output Saturation V oltage, (VDSON) IOUT=300mA (Sink) 350 500 mV (Drive) VDD-0.5 VDD-0.35 V Electro-Static Discharge HBM 4 KV Operate Point, (BOP) 5 25 50 Gauss Release Point, (BRP) -50 -25 -5 Gauss Hysteresis, (BHYS) |BOP - BRP| 50 Gauss ALL-IN-ONE DC Motor Drive IC Supply Voltage 3.5 ~ 20V BOP：25 Gauss BRP：-25 Gauss Output Totem-Pole Package SIP-4(I4) SOT-26L(L6) DFN2020-6(D6) Masteranalog

Single Phase Fan Motor Driver IC 041423 www.masteranalog.com Page 2 of 3 RD-30021 Rev 1.30  Package Dimension and Sensor Location (Top View) NOTES: 1. Controlling dimension: mm 2. Leads must be free of flash and plating voids. 3. Do not bend leads within 1 mm of lead to package interface. 4. PINOUT: Pin No. Pin Name Function

1 VDD Power Supply

2 Do Out1

3 DoB Out2

4 VSS Ground

(Top View) NOTES: 1. Controlling dimension: mm 2. Leads must be free of flash and plating voids. 3. Do not bend leads within 1 mm of lead to package interface. 4. PINOUT: Pin No. Pin Name Function

1 FG Frequency Generation

2 VSS Ground

4 Do Out1

5 VDD Power Supply

6 NC ----

Single Phase Fan Motor Driver IC 041423 www.masteranalog.com Page 3 of 3 RD-30021 Rev 1.30 NOTES: 1. Controlling dimension: mm 2. Leads must be free of flash and plating voids 3. Lead thickness after solder plating will be 0.254mm maximum 4. PINOUT: Pin No. Pin Name Function

1 NC ----

2 VDD Power Supply

3 Do Out1

4,7 VSS Ground

5 DoB Out2

6 FG Frequency Generation

  1. (For reference only) Land Pattern  Typical Application circuit A4477 Vcc SN S N VDD Do DoB VSS R C1=4.7uF/25V R=56Ω C2=2.2uF/25V (Promise of capacitance) R FG FG Masteranalog