Document Number: MC33880
Rev. 6, 5/2008
Freescale Semiconductor
Advance Information
Configurable Octal Serial Switch
with Serial Peripheral Interface
I/O
33880
The 33880 device is an eight-output hardware-configurable high-
side/low-side switch with 8-bit serial input control. Two of the outputs
can be controlled directly via microcontroller for Pulse Width
Modulation (PWM) applications.
HIGH/LOW-SIDE SWITCH
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.
DW SUFFIX
EG SUFFIX (PB-FREE)
98ASB42345B
DWB SUFFIX
EW SUFFIX (PB-FREE)
98ARH99137A
Features
28-PIN SOICW
32-PIN SOICW
• Designed to Operate 5.5 V < VPWR < 24.5 V
• 8-Bit SPI for Control and Fault Reporting, 3.3 V/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
• Internal Reverse Battery Protection on VPWR
• Loss of Ground or Supply Will Not Energize Loads or Damage IC
• Maximum 5.0 µA IPWR Standby Current at 13 V VPWR up to 95°C
• RDS(ON) of 0.55 Ω at 25°C Typical
ORDERING INFORMATION
Temperature
Device
Package
28 SOICW
32 SOICW
Range (T )
A
MC33880DW/R2
MCZ33880EG/R2
MC33880DWB/R2
MCZ33880EW/R2
-40°C to 125°C
• Short Circuit Detect and Current Limit with Automatic Retry
• Independent Overtemperature Protection
• 32-Pin SOICW Has Pins 8, 9, 24, and 25 Grounded for Thermal
Performance
• Pb-Free Packaging Designated by Suffix Code EG and EW
V
V
S
PWR
33880
D1
D2
D3
D4
D5
D6
D7
D8
S1
S2
S3
S4
S5
S6
S7
S8
VPWR
5.0 V
High-Side
VDD
5.0 V
EN
CS
SCLK
DI
MOT
H-Bridge
MCU
SPI I/O
DO
IN5
IN6
GND
PWM
Low-Side
All Output Switches are High- or Low-Side Configurable
Figure 1. 33880 Simplified Application Diagram
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2007. All rights reserved.