TD340

2/21

SYSTEM AND INTERNAL BLOCK DIAGRAM

PIN DESCRIPTION

VBATT

VOUT

RESET

CWD

WD

STBY

TEMP

IN1

IN2

CF

GND

L1

L2

S2

H2

CB2

S1

H1

CB1

OSC

Q2H

Q2L

Q1H

Q1L

BATT -

BATT +

T

°

LOGIC

PWM

PWM

WATCHDOG

RESET

SUPPLY

UVLO

OVLO

TD340

5V

0V

M

Name

Pin

Type

Function

VBATT

1

Power Input

Power Supply

GND

11

Ground

Ground

L1

12

Push Pull Output

Low Side Drive - Gate 1

L2

13

Push Pull Output

Low Side Drive - Gate 2

H1

18

Push Pull Output

High Side Drive - Gate 1

H2

15

Push Pull Output

High Side Drive - Gate 2

S1

17

Analog Input

High Side Drive - Source 1

S2

17

Analog Input

High Side Drive - Source 2

CB1

19

Analog Input

High Side Drive - Bootstrap Capacitor 1

CB2

16

Analog Input

High Side Drive - Bootstrap Capacitor 2

CF

10

Analog Input

External Capacitor to set the PWM Switching Frequency

IN1

8

Analog or Digital Input

Analog Level of PWM (0 to 100%) if CF connected to a capacitor,

or PWM Signal if CF connected to ground

IN2

9

Digital Input

Direction to the Motor’s Rotation

STBY

6

Digital Input

Standby Mode

TEMP

7

Analog Output

Analog Indicator of Temperature

VOUT

2

Power Output

Regulated Power Supply Output for the Microcontroller - 5V

RESET

3

Open Drain Output

Reset Signal for the Microcontroller

WD

5

Digital Input

Watchdog Signal from the

Μicrocontroller

CWD

4

Analog Input

External Capacitor to set Watchdog Timeout

OSC

20

Digital Output

Oscillator Output