Freescale Semiconductor
Advance Information
Document Number: MC33880
Rev. 6, 5/2008
Configurable Octal Serial Switch
with Serial Peripheral Interface
I/O
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.
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
• Designed to Operate 5.5 V < V
PWR
< 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 V
PWR
• Loss of Ground or Supply Will Not Energize Loads or Damage IC
• Maximum 5.0
µA
I
PWR
Standby Current at 13 V V
PWR
up to 95°C
• R
DS(ON)
of 0.55
Ω
at 25°C Typical
• 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 PWR
5.0 V
5.0 V
33880
HIGH/LOW-SIDE SWITCH
DW SUFFIX
EG SUFFIX (PB-FREE)
98ASB42345B
28-PIN SOICW
DWB SUFFIX
EW SUFFIX (PB-FREE)
98ARH99137A
32-PIN SOICW
ORDERING INFORMATION
Device
MC33880DW/R2
MCZ33880EG/R2
MC33880DWB/R2
MCZ33880EW/R2
28 SOICW
-40
°
C to 125
°
C
32 SOICW
Temperature
Range (T
A
)
Package
33880
VPWR
VDD
D1
D2
D3
D4
D5
D6
D7
D8
S1
S2
S3
S4
S5
S6
S7
S8
VS
High-Side
EN
MCU
SPI I/O
CS
SCLK
DI
DO
IN5
IN6
GND
MOT
H-Bridge
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.
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
