ELECTRICAL CHARACTERISTICS (continued)

DRUM TACHO CONVERTER

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Open Loop Output Current

µA (Note 1)

30

60

mA

Full Light Current Range

0.5

3

mA

Sink Current

0.2

0.5

µA

Mismatch

5

10

%

Opto Resistor Reference

Voltage

3.36

3.72

V

3.54

3.91

V

3.72

4.11

V

Open Loop Opto Capacitor

Voltage

2.75

V

Clock Threshold Voltage

2.19

2.42

V

2.30

2.54

V

2.42

2.67

V

Reset Threshold Voltage

0.30

0.33

V

0.32

0.35

V

0.33

0.37

V

µP Syncro Pulse Duration

1

3

µs

Open Drain Sink Current

5

mA

µF(±5%)

HALL COMPARATOR

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Input Voltage Range

0.5

2.7

V

Input Bias Current

1

µA

Input Offset Voltage

8

mV

Switchable Hysteresys

Vref = 1.5V;

10

40

mV

THERMAL PROTECTION

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Open Drain Sink Current

5

mA

Shutdown Temperature

155

170

185

Shutdown Hysteresis

60

Early Warning Temperature

Ts -40

Last Warning Temperature

(see note 2)

Ts -20

°C

NOTE 1: Therm output stage is on in the normal temperature range

NOTE 2: In the Tal-Tll temperature range therm signal follows the inverted Fstart signal. After Tll temperature this output is always in high

impedance. If thermal shutdown is reached this pin will remain in this state un til the shutdown hysteresys will be recovered.

HEATER

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

3

ohm

Heater Voltage

18

V

L6287

6/9