935320728557 datasheet, PDF - EEWORLD Datasheet

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935320728557: DescriptionPower Supply Management Circuit; CategoryPower/power management The power supply circuit; File Size2MB，94 Pages; ManufacturerNXP; Websitehttps://www.nxp.com

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935320728557 Overview

Power Supply Management Circuit

935320728557 Parametric

Parameter Name	Attribute value
Objectid	8367127424
package instruction	,
Reach Compliance Code	unknown
ECCN code	EAR99
Analog Integrated Circuits - Other Types	POWER SUPPLY MANAGEMENT CIRCUIT

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NXP Semiconductors

Advance Information

Document Number: MC33909

Rev. 4.0, 8/2016

System basis chip with DC/DC and

multiple switch-to-ground interface

This SMARTMOS IC integrates the common functionality of system basis chips

with switch detection inputs. The device works as an advanced power

management unit for the MCU and additional integrated circuits such as

sensors, CAN transceivers, and eXtreme switches. It has one built-in enhanced

high-speed CAN interface (ISO 11898-2 and -5), with local and bus failure

diagnostics, protection and fail-safe operation mode, and includes four LINs,

compatible with specification 2.1 and SAEJ2602-2.

The IC starts operating when the VBATP (reverse battery protected) pin

reaches 5.3 V maximum. The device requires a reverse blocking ultrafast or

Schottky diode for operation. The VPRE supply operating in Buck/Boost mode

allows functional operation of the IC from 2.5 V to 35 V on VBATP. The VPRE

pin supplies the source voltage for the VDD, VAUX, CAN5V, and SG power

rails.

Switch-to-ground inputs are available for switch detection and supply

configurable pulsed wetting current, with low sustain current levels for

improved thermal and power management. The IC can be programmed to

wake-up when a change of state is detected on any input. The device also

implements an innovative and advanced fail-safe state machine and concept

solution.

Features

• VDD rail (3.3 V or 5.0 V) operates down to 2.5 V on VBATP (provided by

PRE

Buck/Boost)

• VAUX rail (3.3 V or 5.0 V) capable of surviving short-to-battery (40 V)

conditions

• Low Q current operation for low-power sleep mode, typ. 125

μA

• Secured SPI and advanced watchdog

• SAFE_B pin for limp home mode

• Six switch to GND inputs with selectable wake-up in change of state

• Analog multiplexer

33909

SYSTEM BASIS CHIP

AD SUFFIX (PB-FREE)

48 PIN LQFP-EP

98ASA00737D

Applications

• Front/rear body controllers

• Gateway modules

• Electric power steering

• Power train

VSW

VPREGATE

VPRE VAUXE VAUXB VAUX

VDDE

VDDB

VDD

BAT

PI Filter

BOOT

VBAT_SMPS

VBATP

VBATSNS

WDI

SG0

SG1

SG2

SG3

SG4

SG5

CANH

VDD

SAFE_B

AMUX

RST_B

INT_B

MOSI

MISO

SCLK

CS_B

RXD_L0:RXD_L3

TXD_L0:TXD_L3

RXD_C

TXD_C

CAN5V

MCU

SPI

CAN Bus

VBATP

CANL

LIN_0

LIN_1

LIN_2

LIN_3

LIN Bus

GND LIN

GND

CANGND

Figure 1. 33909AD simplified application diagram

* This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

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