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PDF MC33385 Data sheet ( Hoja de datos )
| Número de pieza | MC33385 | |
| Descripción | Automotive Quad Low Side Driver | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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MSOETMORICOLOANDUCTOFrReescale Semiconductor, IncM. C33385
Automotive Quad
Low Side Driver
QUAD LOW SIDE DRIVER
SEMICONDUCTOR
TECHNICAL DATA
The MC33385 is a Quad Low Side Driver fully protected switch. This
device is a general purpose Low Side Driver but has been especially
designed to operate in engine management application as injector
driver or automotive gear box. It is interfaced directly with a
microcontroller for parallel control of the load and the individual output
diagnostic is done through a SPI. The diagnostic logic recognizes 4
failure types at each output stage the overcurrent, the short to GND, the
openload and the over-temperature.
•RDSON of 250mΩ per Output at 25°C
•Supplied from the main 5V Vcc
•Input CMOS Compatible
•Diagnostic through SPI
•Nominal Current of 2A per Output
•Current Limitation at 3A with Automatic Turn Off
•Output Internally Clamped at 50V typ for Inductive Load Drive
•Junction to Case Thermal Resistance of 4.4°C/W
•Individual Output over Temperature Shutdown
DH SUFFIX
HSOP20 PACKAGE
PIN ASSIGNMENT
GND2 1
OUT2 2
N.C 3
NON2 4
SDI 5
CLK 6
NCS 7
NON4 8
OUT4 9
GND4 10
21
Heat sink
21
20 GND1
19 OUT1
18 N.C
17 NON1
16 SDO
15 NRES
14 VCC
13 NON3
12 OUT3
11 GND3
www.DataSheet4U.comORDERING INFORMATION
Device
Temperature
Range
Package
MC33385DH
-40°C to +125°C
HSOP20
Simplified Block Diagram
NON1
NON2
NON3
NON4
URES
RES
RES
URES
VCC
FR Reset
IRES
TRIGGER
S
R
VCC
Charge Pump
DRIVER
ON1
I-SCB filter
t-ISCB
dv/dt control
Over-temp. detection
OUT1
OUT2
OUT3
OUT4
SDI
VCC
CLK
NCS
VCC
IRES
Shift
Register
SDO
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Failure
Register
(FR)
ON1
I-OL filter
t-IOL
NON1
SCG filter
t-SCG
URES
RES
V ref OSC
Under Voltage
Reset
Reset
Oscillator
For More Information On This Product,
Go to: www.GfNreD escale.coNmRES
© Motorola,Inc 1999
Rev 5.1
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MC33385
Freescale Semiconductor, Inc.
ELECTRICAL CHARACTERISTICS TCASE = - 40°up to + 125°C and VCC = 4.5V up to 5.5V
Parameters
Symbol
Min
Typ
NCSL/H ti Output Data Flout
Capacitance at SDI, SDO, CLk, CS
NCS Filtertime (Pulses ≤ tfNCS will be ignored)
tpchdz
tpcld
tfNCS
10
Max
100
10
40
DIAGNOSTIC REGISTER AND SPI TIMING
Figure1- Timing Diagram to Read the Diagnostic Register
NCS
CLK
SDO
FSL LSB
D1
D2
D3 D4
D5 D6
MSB
SDI
LSB
D1
D2
D3 D4 D5 D6
MSB
FR-RESET
NOTE : FR -RESET means Reset failure storage (internal signal)
Figure2 - Diagnostic Failure Register Structure
MSB
D7 D6 D5 D4 D3
LSB
D2 D1
D0 FSL
FAILURE INDICATOR BIT
Only valid during NCS = LOW to
www.DataSheet4U.comthe first L to H CLK change
1 : failure stored
0 : no failure
STATUS CHANNEL 4
11 : no failure
01 : open circuit
10: short to battery or overtemperature
00 : short to gnd
STATUS CHANNEL 3
STATUS CHANNEL 2
STATUS CHANNEL 1
Figure3- Serial Interface Timing
NCS
CLK
SDO
SDI
tsclch
thclcl
tclh
tcll
tcsdv
tpcld
FSL D0
tcsdv
thcld
D0
D1
tsclcl thclch
tpchdz
D7
D7
Unit
ns
pF
ns
MC33385
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MC33385
Freescale Semiconductor, Inc.
CASE OUTLINES
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Motorola reserves the right to make changes without further notice to any products herein to improve reliability,
function or design. Motorola does not assume any liability arising out of the application or use of any product or circuit
described herein ; neither does it convert any licence under its patent rights of others. Motorola products are not
authorized for use as components in life support devices or systems intended for surgical implant into the body or
intended to support or sustain life. Buyer agrees to notify Motorola of any such intended end use whereupon Motorola
shall determine availability and suitability of its products for the use intended. Motorola and are registered
trademarks of Motorola, Inc. Motorola, Inc. is an Equal Employment opportunity/Affirmative Action Employer.
MC33385
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| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet MC33385.PDF ] | |
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