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PDF MC33291 Data sheet ( Hoja de datos )
| Número de pieza | MC33291 | |
| Descripción | Eight Output Switch with Serial Peripheral Interface I/O | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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Freescale Semiconductor, Inc.
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Document order number: MC33291/D
Rev 2, 11/2002
Eight Output Switch with Serial
Peripheral Interface I/O
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 applica-
tions, 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 microcon-
troller 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, 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 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 Ω 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
33291
EIGHT OUTPUT SWITCH
(SPI I/O)
Package Options
DW SUFFIX
PLASTIC PACKAGE
CASE 751E
SOICW (16+4+4)
ORDERING INFORMATION
Device
Temperature
Range TA
Package
MC33291DW
-40°C to 125°C
SOIC-24
MC33291DWR2 -40°C to 125°C
SOIC-24
33291 Simplified Application Schematic
SFPD
VDD
Micro-
controller
SFPD
CS
SCLK
CMOS
Input
Logic
SI
RST
SO
CMOS
Serial
Shift
Registers
and
Latches
VPWR
Output 0
Output 1
Updrain
DMOS
Output
Switches
and
Sense
Circuits
Output 2
Output 3
Output 4
Output 5
Output 6
Output 7
+VBAT
GND
This device contains 1266 active transistors.
© Motorola, Inc. 2002
For More Information On This Product,
Go to: www.freescale.com
1 page  
Freescale Semiconductor, Inc.
STATIC ELECTRICAL CHARACTERISTICS
Characteristics noted under conditions 4.5 V ≤ VDD ≤ 5.5 V, 9.0 V ≤ VPWR ≤ 16 V, -40°C ≤ TA ≤ 125°C, unless otherwise noted. Typical
values noted reflect the approximate value with VBat = 13 V, TA = 25°C.
Characteristic
Symbol Min Typ Max Unit
Power Input
Supply Voltage Range
Quasi-Functional (Note 14)
Fully Operational
Supply Current (All Outputs ON, IOUT = 0.5 A)
VPWR(QF)
VPWR(FO)
VPWR(ON)
5.5
9.0
—
V
— 9.0
— 26.5
1.0 2.0 V
Sleep State Supply Current at RST ≤ 0.2 VDD and/or VDD < 0.5 V
IPWR(ON)
—
1.0
2.5 µA
Sleep State Output Leakage Current (Per Output, RST = 0)
IPWR(SS)
—
1.0
2.5 µA
Over voltage Shutdown
VOV 28 32 36 V
Over voltage Shutdown Hysteresis (Note 15)
VOV(HYS)
0.2
0.8
1.5 V
Logic Supply Voltage
Logic Supply Current (Note 16)
RST ≥ 0.7 VDD
RST ≤ 0.5 V
VDD 4.5 — 5.5 V
IDD
— 1.0 4.0 mA
— — 25 µA
Logic Supply Under Voltage Lockout Threshold (Note 17)
VDD(UVLO)
2.5
—
3.5 V
Notes:
14. SPI inputs and outputs operational; Fault status reporting may not be fully operational within this voltage range. Outputs remain operational
somewhat below this VPWR range, but RDS(on) will increase, causing power dissipation to increase. Outputs will re-establish their instructed
state following a VPWR interruption as long as VDD remains non-interrupted.
15. This parameter is guaranteed by design, but it is not production tested.
16. Measured with the RST pin held at a logic high state; outputs can be OFF or ON or in any combination thereof.
17. Device incorporates a power-ON reset function; for VDD less than the Under Voltage Lockout Threshold voltage, all data registers are reset
and all outputs are disabled.
MOTOROLA ANALOG INTEGRATED CIRFCoUIrTMDEoVrICeEIDnAfoTArmation On This Product,
Go to: www.freescale.com
33291
5
5 Page 
Freescale Semiconductor, Inc.
VDD = 5.0 V
VPWR = 14 V
33291
CS
Under
Test
RL = 26 Ω
Output
CL
CL represents the total capacitance of the test fixture and probe.
Figure 7. Switching Time Test Circuit
tr(SI)
< 50 ns
tf(SI)
90%
50%
CS 10%
tdly(off)
Output Voltage
Waveform 1
10%
< 50 ns
5.0 V
0
14 V
VOL
Output Voltage
Waveform 2
90%
tdly(on)
14 V
VOL
1. tdly(ON) and tdly(OFF) are turn-ON and turn-OFF propagation delay times.
2. Turn-OFF is an output programmed from an ON to an OFF state.
3. Turn-ON is an output programmed from and OFF to an ON state.
Figure 9. Turn-On/Off Waveforms
VDD = 5.0 V
VPWR = 11 V
33291
CS
Under
Test
IL = 2.0 A
(Output ON)
Output
CL = 20 pF
CL represents the total capacitance of the test fixture and probe.
Figure 8. Output Fault Unlatch Disable
Delay Test Circuit
tr(SI)
tf(SI)
< 50 ns
< 50 ns
CS
50%
90%
10%
5.0 V
0
Output Voltage
Waveform
Output Current
Waveform
50%
tdly(off)
50%
Voff = 11 V
VON = 5.0 V
IO(CL)
0
1. tpdly(off) is the output fault unlatch disable propagation delay time required to
correctly report an output fault after CS rises. It represents an output command-
ed ON while having an existing output short (over current) to supply.
2. The SFPD pin < 0.2 V
Figure 10. Output Fault Unlatch Disable
Delay Waveforms
MOTOROLA ANALOG INTEGRATED CIRFCoUIrTMDEoVrICeEIDnAfoTArmation On This Product,
Go to: www.freescale.com
33291
11
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet MC33291.PDF ] | |
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