ISL68229IRAZ datasheet(13/107 Pages) RENESAS

13 / 107 page

ISL68229, ISL68239

1. Overview

R16DS0006EU0101 Rev.1.01

Page 13 of 106

Jul 21, 2022

1.5

Functional Pin Descriptions

See Table 4 on page 33 for design layout considerations.

ISL68229 Pin

Number

ISL68239 Pin

Number

Pin Name

Description

6, 5, 4, 3, 2, 1,

68, 67, 66, 65,

64, 63

6, 5, 4, 3, 2, 1,

68, 67, 66, 65,

64, 63

PWM[11:0]

Pulse-Width Modulation (PWM) outputs. Connect these pins to the PWM input pins of

3.3V logic-compatible smart power stages, driver ICs, or DrMOS.

CFP

Catastrophic fault protection output. This active, high-logic signal can be configured to

alert the host to major fault events.

nVRHOT

Thermal warning indicator. This open-drain output is pulled low in the event of a

sensed over-temperature at the TEMP pins.

9, 11

DNC

Do not connect any signals to these pins.

10, 12

GND

Connect to ground

AVS_VDDIO

AVSBus reference voltage input. Leave open if not used.

AVS_MDA

AVSBus data input pin. Connect to ground if not used.

AVS_SDA

AVSBus data output pin. Leave open if not used.

AVS_CLK

Synchronous clock signal input of the AVSBus. Connect to ground if not used.

15, 14, 13

15, 14 13

EN[2:0]

Input pin used for enable control of outputs. Connect to ground if not used.

18, 17, 16

PG[2:0]

Open-drain, power-good indicator for outputs.

VINSEN

Input voltage sense pin for the VIN supply voltage.

20, 21

DNC

Do not connect any signals to these pins.

VMON

Input voltage sense pin for the driver supply voltage.

23, 25, 27, 29,

31, 33, 35, 37,

39, 41, 43, 45

23, 25, 27, 29,

31, 33, 35, 37,

39, 41, 43, 45

CSRTN[11:0]

The CS and CSRTN pins are current-sense inputs to individual phase differential

amplifiers. Unused phases should have their respective current-sense inputs

grounded. These pins support smart power stage, DCR, and resistor sensing.

Connection details depend on the current-sense method chosen.

24, 26, 28, 30,

32, 34, 36, 38,

40, 42, 44, 46

24, 26, 28, 30,

32, 34, 36, 38,

40, 42, 44, 46

CS[11:0]

54, 50, 47

RGND[2:0]

Negative differential voltage sense input for outputs. Connect to a negative remote

sensing point. Connect to ground if not used.

55, 51, 48

VSEN[2:0]

Positive differential voltage sense input for outputs. Connect to a positive remote

sensing point. Connect to ground if not used.

53, 52, 49

TEMP[2:0]

Input pin for sensing external temperature measurement at outputs. Supports

NTC-based temperature sensing and smart power stage sensing. Connect to ground

if not used.

CONFIG

Configuration ID selection pin. Attach a resistor from this pin to GND.

ADDRESS

SMBus/PMBus address selection pin.

VCC

Chip primary bias input. Connect this pin directly to a +3.3V supply with a 1µF or

greater MLCC bypass capacitor.

VCCS

Internally generated 1.2V LDO logic supply from VCC. Decouple with a 4.7µF or

greater MLCC (X5R or better).

nPMALERT

Open-drain output pin for alerting the SMBus host.

PMSCL

Serial clock signal pin for the SMBus interface.

PMSDA

Serial data signal pin for the SMBus interface.

EPAD

GND

The package pad serves as the GND return for all IC functions. Connect directly to the

system GND plane with multiple vias.

ISL68229IRAZ Datasheet(PDF) 13 Page - Renesas Technology Corp

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