AS8410 datasheet(9/19 Pages) AMSCO

9 / 19 page

PWM DC Motor Regulator – Data Sheet

AS8410

Rev. 1.0, December 2000

page 9 of 19

VTP < 0.5 *VDD à over temp.

VTP > 0.5 *VDD à no over temp.

Charge pump and 5V Regulator

Cp1

Cp2

Charge pump capaci-

tors

100 nF … 200 nF

The capacitor value is dependent on

the external power FET to drive

(Cgate_source)

Diodes of the charge

pump

Vbreak > Vbat + 10 V

Imax > 50 mA

CVDD

Filter capacitor of the

5V regulator

100 nF

CVbat

Filter Capacitor of the

Vbat

1000

µF

The capacitor value is dependent on

the motor power.

Typical value: 1000

µF pro 100 W

motor power in automotive applica-

tion.

Power Switch and Free wheel diode

Free wheel diode

Tr1

Power FET

Dependent on the

max. motor current

and voltage

Austria Mikro Systeme International AG gives all necessary application support to the

user of this PWM DC Motor Regulator device AS8410.

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