TB6569FG

2009-08-21

3

Pin Functions

Pin No.

Pin Name

Functional Description

1

ALERT

Error detection output pin

2

OSC

Capacitor pin for controlling oscillation frequency for the PWM

constant-current control

3

IN1

Control signal input pin 1

4

SGND

Small signal ground pin

5

IN2

Control signal input pin 2

6

N.C.

No-connect

7

OUT1

Output pin 1

8

RSGND

Power ground pin/

Detection resistor pin for PWM constant-current control

9

N.C.

No-connect

10

OUT2

Output pin 2

11

N.C.

No-connect

12

VM

Power supply voltage pin

13

VISD

Resistor pin for overcurrent detection threshold control

14

TISD

Resistor pin for overcurrent detection time control

15

PWM

PWM input pin

16

VREF

Supply voltage pin for PWM constant-current control

⎯

FIN

Pin-fin heat sink (Note)

Note: Since the pin-fin is provided for discharging heat, the thermal design must be considered on the PCB designing.

(The fin is installed on the second surface of the chip and electrified; therefore it must be insulated or earthed to

the ground.)

VREF

ALERT

N.C.

PWM

FIN

RSGND

N.C.

VM

IN2

IN1

OUT2

TISD

OUT1

SGND

OSC

VISD

16

15

14

13

12

11

10

9

N.C.

FIN

1

2

3

4

5

6

7

8