P9038 DATASHEET
©2016 Integrated Device Technology, Inc. 8 P9038 August 1, 2016
16 EN
I Active-low Enable Pin. Connect a 47K 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 220K 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 10M 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 10M 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
