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Eight-Output Switch. 33291 Datasheet

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Eight-Output Switch. 33291 Datasheet
















33291 Switch. Datasheet pdf. Equivalent













Part

33291

Description

Eight-Output Switch



Feature


www.DataSheet4U.com Freescale Semiconduc tor Technical Data Document Number: M C33291 Rev. 4.0, 10/2006 Eight-Output Switch with Serial Peripheral Interface I/O The 33291 device is an eight-outpu t, low-side power switch with 8bit seri al input control. The 33291 is a versat ile circuit designed for automotive app lications, but is well suited for other environments. The.
Manufacture

Freescale Semiconductor

Datasheet
Download 33291 Datasheet


Freescale Semiconductor 33291

33291; 33291 incorporates SMARTMOS technology, with CMOS logic, bipolar/MOS analog ci rcuitry, and DMOS power MOSFETs. The 33 291 interfaces directly with a microcon troller to control various inductive or incandescent loads. The circuit’s in novative monitoring and protection feat ures include very low standby current, SPI cascade fault reporting capability, internal 53 V clamp.


Freescale Semiconductor 33291

on each output, output-specific diagnos tics, and independent shutdown of outpu ts. The device is parametrically specif ied over an ambient temperature range o f -40°C ≤ TA ≤ 125°C and 9.0 V VPWR ≤ 16 V supply. Features • De signed to Operate Over Wide Supply Volt ages of 5.5 V to 26.5 V • Interfaces to Microprocessor Using 8-Bit SPI I/O P rotocol up to 3.0 MHz • 1.0 A Pe.


Freescale Semiconductor 33291

ak Current Outputs with Maximum RDS(ON) of 1.6 Ω at TJ 150°C • Outputs Cur rent-Limited to Accommodate In-Rush Cur rents Associated with Switching Incande scent Loads • Output Voltages Clamped to 53 V During Inductive Switching • Maximum Sleep Current (IPWR) of 25 µA • Maximum of 4.0 mA IDD During Opera tion • Pb-Free Packaging Designated b y Suffix Code EG 33291 LOW-SIDE.





Part

33291

Description

Eight-Output Switch



Feature


www.DataSheet4U.com Freescale Semiconduc tor Technical Data Document Number: M C33291 Rev. 4.0, 10/2006 Eight-Output Switch with Serial Peripheral Interface I/O The 33291 device is an eight-outpu t, low-side power switch with 8bit seri al input control. The 33291 is a versat ile circuit designed for automotive app lications, but is well suited for other environments. The.
Manufacture

Freescale Semiconductor

Datasheet
Download 33291 Datasheet




 33291
www.DFaretaeSshceeatl4eUS.ceommiconductor
Technical Data
Eight-Output Switch with Serial
Peripheral Interface I/O
Document Number: MC33291
Rev. 4.0, 10/2006
33291
The 33291 device is an eight-output, low-side power switch with 8-
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.
The circuit’s innovative monitoring and protection features include
very low standby current, SPI cascade fault reporting capability,
internal 53 V clamp on each output, output-specific diagnostics, and
independent shutdown of outputs.
The device is parametrically specified over an ambient temperature
range of -40°C TA 125°C and 9.0 V VPWR 16 V supply.
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
MHz
• 1.0 A Peak Current Outputs with Maximum RDS(ON) of 1.6 at TJ -
150°C
• Outputs Current-Limited to Accommodate In-Rush Currents
Associated with Switching Incandescent Loads
• Output Voltages Clamped to 53 V During Inductive Switching
• Maximum Sleep Current (IPWR) of 25 µA
• Maximum of 4.0 mA IDD During Operation
• Pb-Free Packaging Designated by Suffix Code EG
LOW-SIDE SWITCH
DW SUFFIX
EG SUFFIX (PB-FREE)
98ASB42344B
24-PIN SOICW
ORDERING INFORMATION
Device
Temperature
Range (TA)
Package
MC33291DW/R2
MCZ33291EG/R2
-40°C to 125°C
24 SOICW
VDD
MCU
33291
VPWR OP 0
SFPD OP 1
VDD OP 2
CS
SCLK
SI
SO
RESET
OP 3
OP 4
OP 5
OP 6
OP 7
GND
V PWR
Figure 1. 33291 Simplified Application Schematic
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.




 33291
VDD
16
SFPD
15
RST
22
CS
10
SCLK
3
SI
4
SO
9
+
10 µA
25 µA
+
10 µA
Fault Timers
10 µA +
10 µA
Serial D/O
Line Driver
VPWR 21
Over-
voltage
Voltage
Regulator
OVD
VDD
RB
SFPD
SFL
CS
SCLK
SI
SO
CSI
CSBI
GE
OT
SF
OF
SPI
Interface
Logic
Bias
Gate
Control
Open
Load
Detect
Short
Circuit
Detect
53 V
To Gates
1–7
lLimit
+
-
RS
Over-
temperature
Detect
From Detectors 1–7
Output 0
24
Outputs
1, 2, 11–14, 23
Grounds
5–8, 17–20
Figure 2. 33291 Simplified Block Diagram
Table 1. Fault Operation
SERIAL OUTPUT (SO) PIN REPORTS
Overvoltage
Overvoltage condition reported.
Overtemperature
Fault reported by Serial Output (SO) pin.
Overcurrent
SO pin reports short to battery/supply or overcurrent condition.
Output ON, Open Load Fault Not reported.
Output OFF, Open Load Fault SO pin reports output OFF open load condition.
DEVICE SHUTDOWNS
Overvoltage
Overtemperature
Overcurrent
Total device shutdown at VPWR = 28 V to 36 V. All outputs are latched off while the SPI register is reset
(cleared). Outputs can be turned back on with a new SPI command after VPWR has decayed below 26.5 V.
Only the output experiencing an overtemperature condition turns OFF.
Only the output experiencing an overcurrent shuts down at 1.0 A to 3.0 A after a 70 µs to 250 µs delay, with
SFPD pin grounded. All other outputs will continue to operate in a current limit mode with no shutdown if the
SFPD pin is at 5.0 V (so long as the individual outputs are not experiencing thermal limit conditions).
33291
2
Analog Integrated Circuit Device Data
Freescale Semiconductor




 33291
PIN CONNECTIONS
PIN CONNECTIONS
OP7
OP6
SCLK
SI
GND
GND
GND
GND
SO
CS
OP5
OP4
1
2
3
4
5
6
7
8
9
10
11
12
24 OP0
23 OP1
22 RST
21 VPWR
20 GND
19 GND
18 GND
17 GND
16 VDD
15 SFPD
14 OP2
13 OP3
Figure 3. 33291 Pin Connections
Table 2. Pin Definitions
Pin Pin Name
1 OP7
2 OP6
3 SCLK
4 SI
Formal Name
Output 7
Output 6
System Clock
Serial Input
5–8, 17–20
9
10
GND
SO
CS
Ground
Serial Output
Chip Select
11 OP5
Output 5
12 OP4
Output 4
13 OP3
Output 3
14 OP2
Output 2
15 SFPD
Short Fault
Protect Disable
16 VDD
Logic Supply
21 VPWR
Output MOSFET
Gate Drive Supply
22 RST
Reset
23 OP1
24 OP0
Output 1
Output 0
Definition
Connection to drain of output MOSFET number seven.
Connection to drain of output MOSFET number six.
Clocks the internal Shift registers of the 33291.
This pin is for the input of serial instruction data. SI information is read on the falling
edge of SCLK.
Connection to IC Power Ground and functions as part of heat sinking path.
Tri-stateable output from the Shift register.
Whenever this pin is in a logic low state, data can be transferred from the MCU to the
33291 through the SI pin and from the 33291 to the MCU through the SO pin.
Connection to drain of output MOSFET number five.
Connection to drain of output MOSFET number four.
Connection to drain of output MOSFET number three.
Connection to drain of output MOSFET number two.
This pin is used to prevent the outputs from latching-OFF because of an overcurrent
condition.
Plus supply for logic.
Main power supply.
This pin is active low. It is used to clear the SPI Shift register, thereby setting all
output switches OFF.
Connection to drain of output MOSFET number one.
Connection to drain of output MOSFET number zero.
Analog Integrated Circuit Device Data
Freescale Semiconductor
33291
3




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