V-Tec C5-AT25/D4 Manual do Utilizador descarregar pdf (Página 17)

MAX8520/MAX8521

Smallest TEC Power Drivers for

Optical Modules

______________________________________________________________________________________ 17

GND

FREQ

(MAX8520)

COMP

CTLI

ITEC

MAXIP

FREQ (MAX8521)

PWM CONTROL

AND

GATE CONTROL

MAXIN

R

SENSE

PGND1

PGND2

MAXV

REF

SHDN

REF

OS1

OS2

CS

LX1

LX2

ON

OFF

3V TO

5.5V

OS1

REF

CS

MAX V

TEC

=

V

MAXV

× 4

OR V

DD

MAX I

TEC

=

(V

MAXIP

/V

REF

) ×

(0.15V/R

SENSE

)

MAX I

TEC

=

(V

MAXIN

/V

REF

) ×

(0.15V/R

SENSE

)

PV

DD

1

PV

DD

2

V

DD

V

DD

MAX8520/

MAX8521

Functional Diagram

1 2 ... 12 13 14 15 16 17 18 19

MAX8520/MAX8521 1
Optical Modules 1

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