P9038 DATASHEET

©2016 Integrated Device Technology, Inc.

8

P9038 August 1, 2016

16

EN

I

Active-low Enable Pin. Connect a 47KΩ to GND or tie directly to GND if chip is always enabled.

17

REFGND

PWR

Signal Ground Connection. Connect to AGND.

18

REG_IN

I

Input Voltage for the internal 5V linear regulator. Connect a 1µF capacitor from this pin to GND.

19

LDO5V

O

5V LDO Output. Connect a 1µF Capacitor from this pin to GND.

20

LOD2P5V

O

2.5V LDO Output. Connect a 1µF Capacitor from this pin to GND.

21

LDO2P5_IN

PWR

Input Voltage for the internal 2.5V linear regulator. This pin must be connected to LDO5V (pin 19).

22

INV5V_IN

PWR

Input power to the internal driver circuitry. Connect a 1µF capacitor from this pin to GND.

23

OVP_SEL

I

Input over-voltage protection selection. When connected to GND, the nominal OVP threshold is set

to 7.15V. When floating, 7.85V. Connecting the pin through a 220KΩ resistor to GND sets the OVP

to 6.3V.

24

VSNS_AVG

I

Input voltage sense averaging pin. Connect a 6.8nF capacitor from this pin to AGND.

25

BST2

I

Bootstrap pin for SW2 Bridge Node. Connect a 0.1uF capacitor from this pin to SW2 pin.

26,27,28,29

PGND2

GND

Power Ground.

30,31,32,33

SW2

O

H-Bridge Switch Node 2.

34,35,36,37

IN

I

Power Supply Input Voltage. Connect two 22µF capacitors from the pins to GND.

38,39,40,41

SW1

O

H-Bridge Switch Node 1.

42,43,44,45

PGND1

GND

Power Ground.

46

BST1

I

Bootstrap pin for SW1 Bridge Node. Connect a 0.1uF capacitor from this pin to SW1 pin.

47

GATE

O

Output gate driver for the external FET. Connect a 6.8nF capacitor in parallel with 10MΩ from this

pin to GND to configure soft-start.

48

ISNS_AVG

I

Input current sense averaging pin. Connect a 1nF capacitor from this pin to AGND.

49

ISNSN_IN

I

Input Current Sense amplifier inverting Input.

50

ISNSP_IN

I

Input Current Sense amplifier non-inverting Input.

51

SHIELD1

O

Shield output to guard DC voltage on HPF pin. Connect a 10MΩ resistor to GND.

52

HPF

I

High Pass Filter Input for Demodulator. Connect to an external high pass filter.

53

SHIELD2

O

Shield output to guard DC voltage on HPF pin. Leave this pin floating.

54

GND

I

Signal Ground Connection.

55

ISNS

O

Coil current sense output, connected to external demodulation circuit.

56

GND

I

Signal Ground Connection.

EP

EP

GND

Exposed Pad. Connect to GND.

Pin #

Name

Type

Function