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L484

PIN FUNCTIONS

(continued)

N擄

14

Name

DRIVER COLLECTOR

INPUT

Function

The collector current for the internal driver which drives the external

darlington is supplied through this pin. The external resistor R10 limits the

dissipation in the IC. The value this resistor depends on the darlington used

and on the limiting current in the coil.

The external darlington is protected against overvoltage by means of an

internal zener available at this pin. The external divider R5/R6 defines the

limitation value, typically given by :

錚?/div>

30

錚?/div>

+

5

鈰?/div>

10

鈭?/div>

3

錚?鈰?/div>

R6

+

30

V

ovp

= 錚?/div>

R5

錚?/div>

16

DRIVING STAGE

OUTPUT

Current Driver for the External Darlington. To ensure stability on the current

limitation loop a capacitor C3 (typically 2.2nF, this value depending on the

darlington used) must be connected between this pin and the current

sensing input (pin 1).

15

OVERVOLTAGE

LIMITATION

ELECTRICAL CHARACTERISTICS

(V

S

= 14.4V ; T

J

= - 40 to 125擄C unless otherwise specified ; referred

to the test circuit)

Symbol

V

S

V

IS

V

TH

V

SENS

V

ZC

V

H

I

7C

I

7D

I

7D

/I

7C

I

7C

I

7D

I

7D

/I

7C

V

pin3

I

3

V

Cp

V

CEsat

V

Z

V

OVZ

I

09

V

CH

I

CH

Threshold Voltage

Output Current

Continuous Coil Current Protection Inhibit

LOW Voltage (pin 4).

Series Darlington Driver

Saturation Voltage (V

pin 14 - 16

)

Zener Volt. Pin 11

I

pin14

= 150mA

I

pin14

= 50mA

I

pin11

= 140mA

6.5

25

C

D WELL

Charge Current

C

D WELL

Discharge Current

Parameter

Operating Supply Voltage

Input Stage Voltage (pin 2 with

10K鈩?resistor)

On Pick-up Thresh. Voltage at LOW RPM

(pin 2)

Current Limitation Sensing Voltage (pin 1)

Zero Crossing Thresh. Voltage (pin 8)

Hysteresis Voltage (pin 8)

C

D WELL

Charge Current

C

D WELL

Discharge Current

at LOW RPM

V

pick-up

= 0.5V ;

or pin 6 not connected

(*) Note 1

at HIGH RPM

V

pick-up

= 9V

(**) Note 2

T

amb

= 25擄C

(***) Note 3

V

S

= 6 to 16V

Test Conditions

Min.

6

160

V

IS

鈥?0

200

3

100

0.7

7

8

13

0.7

0.85

0

0.4

20

200

Typ.

Max.

28

240

V

IS

+30

320

60

200

3

30

15

33

44

3.2

4

3

0.7

1

0.6

8.8

35

3

0.7

10

V

碌A(chǔ)

V

mA

V

碌A(chǔ)

Unit

V

mV

碌A(chǔ)

External Darlington Overvoltage Protection T

amb

= 25擄C ;

Zener Voltage

I

pin15

= 5 to 15mA

Pin 9 Output Current in Low Status

V

9

= 0V

Tachometer Signal Output LOW Voltage. ON Condition

(pin5)

I

sink

= 0.5mA

OFF Condition

Output Leakage (pin 5)

V

pin5

= 5V

4/11

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L484D1 產(chǎn)品屬性

標(biāo)準(zhǔn)包裝
50
類別
集成電路 (IC)
家庭
PMIC - 電源管理 - 專用
系列
-
應(yīng)用
自動(dòng)
電流 - 電源
-
電源電壓
6 V ~ 28 V
工作溫度
-40°C ~ 125°C
安裝類型
表面貼裝
封裝/外殼
16-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝
16-SOIC
包裝
管件

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