bq500212A

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SLUSBD6B – JULY 2013 – REVISED NOVEMBER 2013

PIN FUNCTIONS

PIN

I/O

DESCRIPTION

NO.

NAME

1

PEAK_DET

I

Connected to peak detect circuit. Protects from coil overvoltage event.

2

Sensor Input. Device shuts down when below 1 V for longer than 150ms. If not used, keep

T_SENSE

I

above 1 V by connecting to the 3.3-V supply.

3

SNOOZE_CAP

I

Connected to interval timing capacitor

4

Not used. Can be left open. Can also be tied to GND and flooded with copper to improve

N/C

I

GND plane.

5

RESET

I

Device reset. Use a 10-k

Ω to 100-kΩ pull-up resistor to the 3.3-V supply.

6

SLEEP

O

Connected to 5 s interval circuit

7

LED_A

I

Connect to an LED via 470-

Ω resistor for status indication.

8

LED_B

I

Connect to an LED via 470-

Ω resistor for status indication.

9

SNOOZE

O

Connected to 500ms ping interval circuit

10

CLK

I/O

10-k

Ω pull-up resistor to 3.3-V supply. For factory use only.

11

DATA

I/O

10-k

Ω pull-up resistor to 3.3-V supply. For factory use only.

12

PWM Output A, controls one half of the full bridge in a phase-shifted full bridge. Switching

PWM_A

O

deadtimes must be externally generated.

13

PWM Output B, controls other half of the full bridge in a phase-shifted full bridge. Switching

PWM_B

O

deadtimes must be externally generated.

14

RESERVED

O

Reserved. Leave open.

15

FOD_CAL

O

FOD Calibration pin. It controls the FOD calibration setting at startup.

16

Set the threshold used to detect a PMOD condition by connecting, via resistor, to pin 43.

PMOD

O

Leave open to disable PMOD.

17

Set the threshold used to detect an FOD condition by connecting, via resistor, to pin 43.

FOD

O

Leave open to disable FOD.

18

LED_C

O

Connect to an LED via 470-

Ω resistor for status indication.

19

RESERVED

O

Reserved, leave this pin open.

20

RESERVED

I

Reserved, connect to GND.

21

DOUT_TX

I

Not used. Leave this pin open.

22

SNOOZE_CHG

I

Connected to interval timing capacitor.

23

BUZ_AC

O

AC Buzzer Output. Outputs a 400-ms, 4-kHz AC pulse when charging begins.

24

DC Buzzer Output. Outputs a 400-ms DC pulse when charging begins. This could also be

BUZ_DC

O

connected to an LED via 470-

Ω resistor.

25

RESERVED

I/O

Not used, leave this pin open.

26

RESERVED

I/O

Not used, leave this pin open.

27

RESERVED

I/O

Reserved, leave this pin open.

28

RESERVED

I/O

Reserved, leave this pin open.

29

RESERVED

I/O

Reserved, leave this pin open.

30

RESERVED

I/O

Reserved, leave this pin open.

31

GND

I/O

Reserved, connect to GND.

Copyright © 2013, Texas Instruments Incorporated

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