Document Number: MC33880

Rev. 8.0, 5/2012

Freescale Semiconductor

Technical Data

Freescale Semiconductor, Inc. reserves the right to change the detail specifications,

as may be required, to permit improvements in the design of its products.

© Freescale Semiconductor, Inc., 2009-2012. All rights reserved.

Configurable Octal Serial Switch

with Serial Peripheral Interface

I/O

The 33880 device is an 8-output hardware configurable high side/

low side switch with 8-bit serial input control using the serial peripheral

interface (SPI). Two of the outputs can be controlled directly via

microcontroller for pulse-width modulation (PWM) applications.

The 33880 controls various inductive or incandescent loads by

directly interfacing with a microcontroller.

The circuit's innovative monitoring and protection features include

very low standby currents, “cascadable” fault reporting, internal 40 V

output clamping for low side configurations, internal -20 V output

clamping for high side configurations, output specific diagnostics, and

independent shutdown of outputs.

Features

• 8-bit SPI for control and fault reporting, 3.3/5.0 V compatible

• Outputs are current limited (0.8 A to 2.0 A) to drive incandescent

lamps

• Output voltage clamp is +45 V (typical) (low side drive) and -20 V

(typical) (high side drive) during inductive switching

• Loss of ground or supply will not energize loads or damage IC

• Maximum 5.0

μA I

• Short circuit detect and current limit with autoretry

• Independent over-temperature protection

• 32-pin SOICW has pins 8, 9, 24, and 25 grounded for thermal

performance

Figure 1. 33880 Simplified Application Diagram

HIGH/LOW SIDE SWITCH

EG SUFFIX (PB-FREE)

98ASB42345B

28-PIN SOICW

33880

ORDERING INFORMATION

Device

(For Tape and Reel, add

an R2 Suffix)

Temperature

Package

MC33880PEG

-40

28 SOICW

MC33880PEW

32 SOICW

EW SUFFIX (PB-FREE)

98ARH99137A

32-PIN SOICW

All Output Switches are High- or Low-Side Configurable

V PWR

33880

SPI I/O

PWM

MCU

MOT

High-Side

H-Bridge

Low-Side

5.0 V

5.0 V

V S

D1

D2

D4

D5

D6

D7

S8

D3

EN

VDD

VPWR

GND

CS

SCLK

DI

DO

IN5

IN6

S1

S2

S4

D8

S5

S6

S7

S3