EUM6179 EUTECH | Alldatasheet

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Technical content

DS6179 Ver1.0 Feb. 2007 Single-Phase Full-Wave Motor Driver f o r F a n M o t o r

DESCRIPTION

EUM6179 is designed specifically for electronic commutation of single coil brushless DC motor applications. It is intended to be used as an interface between a HALL IC and a single coil motor. The functions built in EUM6179 are soft switched drive mode, fan tachometer, lock detection, automatic restart, thermal shut-down and Hall Bias. Soft switched drive mode makes the output signal gentle when the amplitude of HALL signal is small. Oppositely, it makes the output signal steep when the amplitude of HALL signal is big. If the motor is stalled by external force or obstacles, overdrive current may incur coil overheat/burning. To prevent this, lock detection circuit can shut down the driver for 5 seconds after motor lockup. Then automatic restart circuit will try to power up the driver for 500ms every 5 seconds. For different application, fan tachometer circuit has FG output for EUM6179 and FG/2 output for EUM6179A. Application Circuit and Block Diagram

FEATURES

z Low Voltage 2.2V~6V z Single-Phase Full-Wave driver System z Soft switched drive z Lock detection, Automatic restart z Tachometer Output FG output for EUM6179, FG/2 output for EUM6179A z Hall Bias z Thermal Shutdown Protection z FG Output z RoHS Compliant and 100% Lead (Pb)-Free

APPLICATIONS

Figure 1.

DS6179 Ver1.0 Feb. 2007 Pin Configurations Package Type Pin Configurations MSOP-8 Pin Description PIN Pin DESCRIPTION OUT2 1 Motor output terminal H+ 2 Hall input terminal HB 3 Hall bias terminal H- 4 Hall input terminal FG 5 Output pin of fan tachometer ( open-collector ) FG : EUM6179 ( The frequency is the same as Hall input frequency ) FG/2 : EUM6179A ( The frequency is the half of Hall input frequency ) VCC 6 Power supply terminal OUT1 7 Motor output terminal GND 8 GROUND terminal Power Dissipation Figure 2. To use at temperature above Ta=25℃ reduce 4.68mW/℃

DS6179 Ver1.0 Feb. 2007

Ordering Information

Order Number Package Type Marking Operating Temperature range EUM6179MIR1 MSOP-8 xxxx 6179 -40 °C to 105°C EUM6179AMIR1 MSOP-8 xxxx 6179A -40 °C to 105°C EUM6179/A □ □ □ □ Lead Free Code 1 : L e a d F r e e 0 : L e a d Packing R : T a p e & R e e l Operating temperature range I: Industry Standard Package Type M : M S O P - 8

DS6179 Ver1.0 Feb. 2007 Absolute Maximum Ratings „ ESD Ratings Recommended Operating Conditions

Electrical Characteristics

(Unless otherwise specified TA =25°C, VCC = 5V) Limit Parameter Conditions Min Typ Max. Unit ICC Supply Voltage -- 3.3 6 mA Hall input VHOFS Input offset voltage -- -- ±3 mV Output VO Output voltage Io=250mA Upper and Lower total -- 0.30 0.45 V Gio Input-output Gain 45 48 50 dB FG signal output VFGL FG low voltage IFG=3mA -- -- 0.3 V VHYS Input hysteresis voltage ±6 ±10 ±15 mV Lock protection TON Lock detection ON time 0.35 0.50 0.65 sec TOFF Lock detection OFF time 3.5 5.0 6.5 sec Hall bias VHB Hall bias voltage IHB=5mA 1.15 1.30 1.45 V * This product is not designed for protection against radioactive rays.

DS6179 Ver1.0 Feb. 2007 Input Output Circuit

DS6179 Ver1.0 Feb. 2007 Supply Current VH+=0.75V VH-=0.55V Output Voltage VH+=0.75V VH-=0.55V IO=250mA VO =Voh+Vo1 Input Offset Voltage VH+=2.2V VH-=2.2V VHOFS=(VOUT1-VOUT2)/GIO Output Voltage VH+=0.55V VH-=0.75V IO=250mA VO =Voh+Vo1

DS6179 Ver1.0 Feb. 2007 Input-Output Gain STEP 1 VH+= VH-=2.2 V Measure V1 STEP 3 V VH-=2.2 V Measure V3 GIO=20log[(V2-V3)/0.002] STEP 2 VH-=2.2 V Measure V2 FG Low Voltage VH+=0.75 V VH-=0.55 V IFG=3mA

DS6179 Ver1.0 Feb. 2007 Input Hysteresis Voltage Upper VH-= 2.2 V V H+= 2.1 V V FG= H Sweep up VH+ when VFG:H→L Measure VH+ VHYS=VH+-2.2V Lower V H-= 2.2 V V H+= 2.3 V V FG= H Sweep up VH+ when VFG:L→H Measure VH+ VHYS=VH+-2.2V Lock Detection ON/OFF Time VH+=0.75 V V H-=0.55 V Ton: the time OUT1=H Toff: the time OUT1=L (L<0.1V、4.95V<H) Hall Bias Voltage VH+=0.55 V VH-=0.75 V IHB=5mA

DS6179 Ver1.0 Feb. 2007 Packaging Information MSOP-8 MILLIMETERS INCHES SYMBOLS MIN. MAX. MIN. MAX. A - 1.10 - 0.043 A1 0.00 0.15 0.000 0.006 D 3.00 0.118 E1 3.00 0.118 E 4.70 5.10 0.185 0.201 L 0.40 0.80 0.016 0.031 b 0.22 0.38 0.008 0.015 e 0.65 0.026