mc33291dw/r2 Freescale Semiconductor, Inc, mc33291dw/r2 Datasheet

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mc33291dw/r2

Manufacturer Part Number
mc33291dw/r2
Description
Eight-output Switch With Serial Peripheral Interface I/o
Manufacturer
Freescale Semiconductor, Inc
Datasheet
Freescale Semiconductor
Technical Data
© Freescale Semiconductor, Inc., 2006. 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.
Eight-Output Switch with Serial
Peripheral Interface I/O
bit serial input control. The 33291 is a versatile circuit designed for
automotive applications, but is well suited for other environments. The
33291 incorporates SMARTMOS technology, with CMOS logic,
bipolar/MOS analog circuitry, and DMOS power MOSFETs. The 33291
interfaces directly with a microcontroller to control various inductive or
incandescent loads.
very low standby current, SPI cascade fault reporting capability,
internal 53 V clamp on each output, output-specific diagnostics, and
independent shutdown of outputs.
range of -40°C ≤ T
Features
• Designed to Operate Over Wide Supply Voltages of 5.5 V to 26.5 V
• Interfaces to Microprocessor Using 8-Bit SPI I/O Protocol up to 3.0
• 1.0 A Peak Current Outputs with Maximum R
• Outputs Current-Limited to Accommodate In-Rush Currents
• Output Voltages Clamped to 53 V During Inductive Switching
• Maximum Sleep Current (I
• Maximum of 4.0 mA I
• Pb-Free Packaging Designated by Suffix Code EG
The 33291 device is an eight-output, low-side power switch with 8-
The circuit’s innovative monitoring and protection features include
The device is parametrically specified over an ambient temperature
MHz
150°C
Associated with Switching Incandescent Loads
A
≤ 125°C and 9.0 V ≤ V
DD
During Operation
PWR
) of 25 µA
Figure 1. 33291 Simplified Application Schematic
MCU
PWR
V DD
≤ 16 V supply.
DS(ON)
of 1.6 Ω at T
VPWR
SFPD
VDD
CS
SCLK
SI
SO
RESET
33291
GND
OP 0
OP 1
OP 2
OP 3
OP 4
OP 5
OP 6
OP 7
J
-
MC33291DW/R2
MCZ33291EG/R2
Device
ORDERING INFORMATION
V PWR
EG SUFFIX (PB-FREE)
LOW-SIDE SWITCH
98ASB42344B
24-PIN SOICW
33291
-40
DW SUFFIX
Document Number: MC33291
Temperature
Range (T
°
C to 125
A
)
°
C
Rev. 4.0, 10/2006
24 SOICW
Package

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mc33291dw/r2 Summary of contents

Page 1

... 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., 2006. All rights reserved. ≤ supply. PWR Device of 1.6 Ω DS(ON) J MC33291DW/R2 MCZ33291EG/ 33291 VPWR SFPD OP 2 VDD ...

Page 2

Over- voltage + VDD 16 SFPD 10 µA 15 RST 25 µ µ Fault Timers SCLK 10 µ µ Serial D/O Line Driver 9 Table 1. Fault Operation SERIAL ...

Page 3

Table 2. Pin Definitions Pin Pin Name Formal Name 1 OP7 Output 7 2 OP6 Output 6 3 SCLK System Clock 4 SI Serial Input 5 – – 20 GND Ground 9 SO Serial Output 10 CS Chip ...

Page 4

ELECTRICAL CHARACTERISTICS MAXIMUM RATINGS Table 3. Maximum Ratings All voltages are with respect to ground unless otherwise noted. Exceeding these ratings may cause a malfunction or permanent damage to the device. Rating Power Supply Voltage Normal Operation (Steady-State) (12) Transient ...

Page 5

Table 3. Maximum Ratings (continued) All voltages are with respect to ground unless otherwise noted. Exceeding these ratings may cause a malfunction or permanent damage to the device. Rating Thermal Resistance Junction-to-Ambient (Natural Convection, Single-Layer Board) Junction-to-Ambient (Natural Convection, Four-Layer ...

Page 6

ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS Table 4. Static Electrical Characteristics Characteristics noted under conditions 4.5 V Typical values noted reflect the approximate value with V Characteristic POWER INPUT Supply Voltage Range (16) Quasi-Functional Fully Operational Supply Current ...

Page 7

Table 4. Static Electrical Characteristics (continued) Characteristics noted under conditions 4.5 V Typical values noted reflect the approximate value with V Characteristic (21) Output OFF Open Load Detect Current Output Programmed OFF 0.6 V OUT Output Clamp Voltage ...

Page 8

ELECTRICAL CHARACTERISTICS DYNAMIC ELECTRICAL CHARACTERISTICS DYNAMIC ELECTRICAL CHARACTERISTICS Table 5. Dynamic Electrical Characteristics Characteristics noted under conditions 4.5 V Typical values noted reflect the approximate parameter mean at T Characteristic POWER OUTPUT TIMING = 26 Ω) Output Rise Time (V ...

Page 9

RST 0 W(RST SCLK SI Don't Care 33291 SCLK Under Test C represents the total capacitance of the test fixture and probe. L Figure 5. ...

Page 10

ELECTRICAL CHARACTERISTICS ELECTRICAL PERFORMANCE CURVES t R (SI) < 0 50% SCLK t DLY(LH (Low-to-High (SO) t VALID (SO) 0.7 V (High-to-Low) DD 0.2 ...

Page 11

R(SI) F(SI) < 90% 50% CS 10% t DLY(OFF) Output Voltage 10% Waveform 1 Output Voltage 90% Waveform 2 t DLY(ON and t are turn-ON and turn-OFF propagation delay DLY(ON) DLY(OFF) times. 2. Turn-OFF ...

Page 12

FUNCTIONAL DESCRIPTION INTRODUCTION The 33291 was conceived, specified, designed, and developed for automotive applications eight-output low-side power switch having 8-bit serial control. The 33291 incorporates SMARTMOS technology having CMOS logic, bipolar/MOS analog circuitry, and independent state of ...

Page 13

SCLK Parallel Port CS MISO MC68XX SO Microcontroller SPI IRQ MOSI Multiple 33291 devices can also be controlled in a parallel input fashion using SPI, illustrated in Figure shows a possible 24 loads being controlled by only three dedicated parallel ...

Page 14

FUNCTIONAL DESCRIPTION INTRODUCTION 33291 14 MC68XX Microcontroller SPI (Master) 33291 Parallel A1 B1 SCLK Ports A2 8-Bit SO SCLK 8-Bit SI MISO MOSI V DD 33291 SS CS SCLK 8-Bit MC68XX SO Microcontroller SPI SI (Alternate Master) ...

Page 15

CHIP SELECT (CS) The 33291 receives its MCU communication through the pin. Whenever this pin logic low state, data can be CS transferred from the MCU to the 33291 by way of the SI pin and from ...

Page 16

FUNCTIONAL DESCRIPTION FUNCTIONAL PIN DESCRIPTION V DD RDLY Reset MCU C DLY Figure 17. Power ON Reset SHORT FAULT PROTECT DISABLE (SFPD) The Short Fault Protect Disable (SFPD) pin is used to prevent the outputs from latching-off due to an ...

Page 17

Analog Integrated Circuit Device Data Freescale Semiconductor Figure 18. Data Transfer Timing FUNCTIONAL DESCRIPTION 33291 17 ...

Page 18

FUNCTIONAL DESCRIPTION FAULT LOGIC OPERATION INTRODUCTION The MCU can perform a parity check of the fault logic operation by comparing the command 8-bit word to the status 8-bit word. Assume after system reset, the MCU first sends an 8-bit command ...

Page 19

An Output OFF Open Load Fault is indicates when the output voltage is less than the Output Threshold Voltage ( 0 Since the 33291 outputs function THRES DD as switches, during normal operation, ...

Page 20

FUNCTIONAL DESCRIPTION useful when switching incandescent lamp loads, where high in-rush currents experienced during startup last for ms. Each output of the 33291 has its own overcurrent shutdown circuitry. Overtemperature faults and overvoltage faults are not ...

Page 21

However, in general overcurrent and overtemperature faults cannot be differentiated in normal application usage. An advantage of the synchronous serial ...

Page 22

FUNCTIONAL DESCRIPTION The total power dissipation available is dependent on the number of outputs enabled at any one time. At 25°C the R in 450 mΩ with a coefficient of 6500 ppm/°C. For the DS(ON) junction temperature to remain below ...

Page 23

Output ON (40°C/W) R DS(ON) 2.0 4 Outputs ON (35°C/W) 1.5 1.0 8 Outputs ON (34°C/W) 0.5 0 -50 - Ambient Temperature (C°) A Figure 23. Maximum SOIC Package Steady State Output Current ...

Page 24

PACKAGING PACKAGE DIMENSIONS For the most current package revision, visit www.freescale.com and perform a keyword search using the “98A” listed below. 33291 24 PACKAGING PACKAGE DIMENSIONS DW SUFFIX EG SUFFIX PB-FREE) 20-PIN PLASTIC PACKAGE 98ASB42344B ISSUE F Analog Integrated Circuit ...

Page 25

REVISION DATE DESCRIPTION OF CHANGES • Implemented Revision History page 8/2006 3.0 • Converted to Freescale format and prevailing form and style • Added EPP prefix suffix device • Removed MC33291EG/R2 and replaced with MCZ33291EG/R2 in the ...

Page 26

... Freescale Semiconductor was negligent regarding the design or manufacture of the part. Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © Freescale Semiconductor, Inc., 2006. All rights reserved. ...

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