L4620 查看數據表（PDF） - STMicroelectronics
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L4620 Datasheet PDF : 9 Pages
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L4620
ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified. Refer to block diagram
for external component values)
Symbol
VZ
IS
fosc
V7, V8
I7, I8
V2
I2
VSENSH/V2
Vsens
_____
V2
Vclamp3L
Vclamp3H
Isens
Td
Vout(sat)
Vout(clamp)
ILEAK
Parameter
Test Conditions
Internal Zener Voltage (pin 5) IS = 24 mA
Supply Current (pin 5)
VS = 3.8 V
Oscillator Frequency (pin 1)
Rosc = 180 kΩ, Cosc = 4.7 nF
Programming Pins Input
Voltage (pin 7, 8)
Low State
High state
Programming Pins Input Current V7 = V8 = 0 V
(pin 7, 8)
V7 = V8 = VZ
Sensor Drive Output Voltage, (*) V2 = Low,
I2 = 1 mA
V2 = High,
I2 = 1 mA
Sensor Driver Output Current
Sensor Input High Threshold
Voltage Versus V2 (pin 3)
V2 = High
Vpin 3 < VSENSL
Sensor Input Low Threshold
Voltage Versus V2 (pin 3)
V2 = High
Vpin 3 > VSENSH
Sensor Input Clamping Voltage
(pin 3)
Sensor Input Bias Current (pin
3)
Delay Time
Output Stage Saturation
Voltage (pin 6) (**)
Output Stage Overvoltage
Protection (pin 6)
Leak Current (pin 6)
– 100 µA < Isens < 100 µA
V2 = Low
V2 = High
I3 = – 100 µA
I3 = + 100 µA
Vsens = High
fosc = 1.6 kHz
V7 = Low
V7 = High
Iout = 200 mA
Iout = 70 mA
P6 = 15V; P7 = P8 = GND
Min. Typ. Max. Unit
4
4.5
5
V
6.5
11
mA
1.45 1.6 1.75 kHz
0.3
V
2
V
–1
µA
150
µA
0.4
V
VZ–1
VZ–0.4 V
–1
1
mA
0.33 0.4 0.47
0.15 0.22 0.29
– 0.1
0.1
V
– 0.8 – 0.6 – 0.4
V
VZ
VZ +0.8 V
1.2
µA
10.24
sec
20.48
sec
1.3
V
19
21
23
V
100
µA
1
*) This is a squarewave signal. The frequency is given by : f =
fo sc.
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
the oscillator frequency fosc = 1.6 KHz.
4/9
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