mc33879ek/r2 Freescale Semiconductor, Inc, mc33879ek/r2 Datasheet

mc33879ek/r2

Manufacturer Part Number

mc33879ek/r2

Description

Configurable Octal Serial Switch With Open Load Detect Current Disable

Manufacturer

Freescale Semiconductor, Inc

Datasheet

1.MC33879EKR2.pdf (24 pages)

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Freescale Semiconductor

Advance Information

* This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

Configurable Octal Serial Switch

with Open Load Detect Current

Disable

be controlled directly via microprocessor for PWM applications. The

33879 incorporates SMARTMOS technology, with CMOS logic,

bipolar/MOS analog circuitry, and DMOS power MOSFETs. The 33879

controls various inductive, incandescent, or LED loads by directly

interfacing with a microcontroller. The circuit’s innovative monitoring

and protection features include very low standby currents, cascade

fault reporting, internal + 45 V clamp voltage for low-side configuration,

- 20 V high-side configuration, output-specific diagnostics, and

independent overtemperature protection.

Features

low-side switch with 16-bit serial input control. Two of the outputs may

The 33879 device is an 8-output hardware-configurable, high-side /

• Designed to Operate 5.5 V < V

• 16-Bit SPI for Control and Fault Reporting, 3.3 V / 5.0 V

• Outputs Are Current Limited (0.6 A to 1.2 A) to Drive

• Output Voltage Clamp, + 45 V (Low Side) and - 20 V (High Side)

• On/Off Control of Open Load Detect Current (LED Application)

• Internal Reverse Battery Protection on V

• Loss of Ground or Supply Will Not Energize Loads or Damage IC

• Maximum 5.0 µA I

• R

• Short Circuit Detect and Current Limit with Automatic Retry

• Independent Overtemperature Protection

• Pb-Free Packaging Designated by Suffix Code EK

Compatible

Incandescent Lamps

During Inductive Switching

DS(ON)

of 0.75 Ω at 25°C Typical

PWR

Standby Current at 13 V V

MCU

PWR

PWM1

PWM2

MOSI

MISO

SCLK

Figure 1. 33879 Simplified Application Diagram

< 26.5 V

+5.0 V

PWR

SCLK

IN5

IN6

GND

VDD VPWR

V PWR

PWR

33879

V BAT

MCZ33879AEK/R2

MCZ33879EK/R2

MC33879EK/R2

H-Bridge Configuration

Device

High-Side Drive

Low-Side Drive

V BAT

HIGH SIDE/ LOW SIDE SWITCH

ORDERING INFORMATION

DWB SUFFIX EXPOSED PAD

V BAT

EK SUFFIX (PB-FREE)

33879

33879A

Document Number: MC33879

32-PIN SOICW

98ARL10543D

-40

Temperature

Range (T

C to 125

)

Rev 6.0, 6/2007

32 SOICW-EP

Package

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