1

*) This is a squarewave signal. The frequency is given by : f =

32

1

**) The output squarewave signal frequency is given by f =

fosc.

512

The duty cycle depends on the state of the pin 8 and can be or 1 : 2 or 1 : 64, i.e. refer to figure 2, T = 320 ms, t = 160 or 5 ms when

°C, unless otherwise specified. Refer to block diagram

for external component values)

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Internal Zener Voltage (pin 5)

4

4.5

5

V

Supply Current (pin 5)

6.5

11

mA

Oscillator Frequency (pin 1)

1.45

1.6

1.75

kHz

Programming Pins Input

Voltage (pin 7, 8)

Low State

0.3

V

High state

2

V

Programming Pins Input Current

(pin 7, 8)

– 1

µA

150

µA

0.4

V

V

Sensor Driver Output Current

– 1

1

mA

Sensor Input High Threshold

0.33

0.4

0.47

_____

Sensor Input Low Threshold

0.15

0.22

0.29

Sensor Input Clamping Voltage

(pin 3)

– 100

– 0.1

0.1

V

µA

– 0.8

– 0.6

– 0.4

V

µA

V

Sensor Input Bias Current (pin

3)

1.2

µA

Delay Time

10.24

sec

20.48

sec

Output Stage Saturation

Voltage (pin 6) (**)

1.3

V

Output Stage Overvoltage

Protection (pin 6)

19

21

23

V

Leak Current (pin 6)

P6 = 15V; P7 = P8 = GND

100

µA

L4620

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