MC33879APEKR2 Freescale Semiconductor, MC33879APEKR2 Datasheet
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MC33879APEKR2
Manufacturer Part Number
MC33879APEKR2
Description
CONFIG OCTAL SERIAL SW
Manufacturer
Freescale Semiconductor
Datasheet
1.MC33879APEK.pdf
(23 pages)
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Freescale Semiconductor
Technical Data
© Freescale Semiconductor, Inc., 2009-2012. All rights reserved.
Freescale Semiconductor, Inc. reserves the right to change the detail specifications,
as may be required, to permit improvements in the design of its products.
Configurable Octal Serial Switch
with Open Load Detect Current
Disable
interface (SPI). Two of the outputs may be controlled directly via a
microcontroller for pulse-width modulation (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 over-temperature protection.
Features
low side switch with 16-bit serial input control using the serial peripheral
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 compatible
• Outputs are current limited (0.6 to 1.2 A) to drive incandescent
• 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 A I
• R
• Short-circuit detect and current limit with automatic retry
• Independent over-temperature protection
lamps
during inductive switching
DS(ON)
of 0.75 at 25 C typical
PWR
standby current at 13 V V
MCU
5.0 V
PWM1
PWM2
SCLK
MOSI
MISO
PWR
CS
A0
Figure 1. 33879 Simplified Application Diagram
V
< 26.5 V
PWR
PWR
VDD
EN
DI
SCLK
CS
D0
IN5
IN6
GND
VPWR
PWR
33879
D1
D2
D3
D4
D5
D6
D7
D8
S1
S2
S3
S4
S5
S6
S7
S8
V
BAT
M
(For Tape and Reel,
MC33879APEK
MC33879TEK
add an R2 Suffix)
High Side Drive
H-Bridge Configuration
Low Side Drive
V
Device
BAT
HIGH SIDE/ LOW SIDE SWITCH
ORDERING INFORMATION
V
BAT
EK SUFFIX (PB-FREE)
33879A
33879
Document Number: MC33879
32-PIN SOICW
98ARL10543D
Temperature
-40
Range (T
to 125
A
)
C
Rev. 10.0, 6/2012
32 SOICW-EP
Package