Freescale Semiconductor
Technical Data
Document Number: MC33385
Rev. 6.0, 11/2006
Quad Low-side Driver
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 applications 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: overcurrent, short to GND, open
load, and over-temperature.
Features
• RDSON of 250mΩ per Output at 25°C
• Supplied from the main 5V V
CC
• 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
• Pb-Free Packaging Designated by Suffix Code VW
33385
LOW-SIDE DRIVER
DH SUFFIX
VW SUFFIX (PB-FREE)
98ASH70702A
20-PIN HSOP
ORDERING INFORMATION
Device
MC33385DH/R2
MC33385VW/R2
Temperature
Range (T
A
)
-40°C to 125°C
Package
20 HSOP
VPWR
Voltage
Regulator
VCC
33385
OUT1
OUT2
OUT3
OUT4
GND1-4
MCU
NCS
CLK
SDI
SDO
NRE
NON1
NON2
NON3
NON4
Figure 1. MC33385 Simplified Application Diagram
There are no disclaimers required on the Final publication of a data sheet.
© Freescale Semiconductor, Inc., 2007. All rights reserved.
BLOCK DIAGRAM
BLOCK DIAGRAM
VCC
TRIGGER
Charge Pump
NON1
NON2
NON3
NON4
RES
URES
Over-temp. detection
URES
RES
S
DRIVER
R
OUT1
OUT2
dv/dt control
OUT3
OUT4
FR Reset
VCC
IRES
ON1
I-SCB filter
t-ISCB
ON1
SDI
VCC
I-OL filter
t-IOL
CLK
VCC
Shift
Register
NCS
IRES
NON1
Failure
Register
(FR)
SCG filter
t-SCG
URES
RES
V
ref
OSC
SDO
Under Voltage
Reset
Reset
Oscillator
GND
NRES
Figure 2. 33385 Simplified Internal Block Diagram
33385
2
Analog Integrated Circuit Device Data
Freescale Semiconductor
PIN CONNECTIONS
PIN CONNECTIONS
21
GND2
1
OUT2
2
N.C
3
NON2
4
SDI
5
20
GND1
19
OUT1
18
N.C
17
NON1
16
SDO
Heat sink
CLK
6
NCS
7
NON4
8
OUT4
9
GND4
10
21
15
NRES
14
VCC
13
NON3
12
OUT3
11
GND3
Figure 3. 33385 Pin Connections
Table 1. 33385 Pin Definitions
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
OUT1
GND1
Case
NON2
SDI
CLK
NCS
NON4
OUT4
GND4
GND3
OUT3
NON3
Vcc
NRES
SDO
NON1
Pin Name
GND2
OUT2
Ground 2
Output Channel 2
NC
Input Control Signal for Channel 2
Serial Data Input
Clock Line for Serial Interface
Chip Select for Serial Interface
Input Control Signal for Channel 4
Output Channel 4
Ground 4
Ground 3
Output Channel 3
Input Control Signal for Channel 3
5V Power Supply
Reset Input
Data Output of Serial Interface
Input Control Signal Channel 1
NC
Output Channel 1
Ground 1
Connected to the PCB Ground for Thermal Purposes
Definition
33385
Analog Integrated Circuit Device Data
Freescale Semiconductor
3
ELECTRICAL CHARACTERISTICS
MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
MAXIMUM RATINGS
Table 2. 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.
Ratings
ELECTRICAL RATINGS
Voltage Range
Continuous Output Voltage (With no reverse current)
Continuous Current
Peak Output Current
Clamped Energy at the Switching OFF (See
Figure 9)
Input Voltage (Inputs)
Input Protection Diode Current
Input Voltage (Outputs)
Input Protection Diode Current
THERMAL RATINGS
Operating Junction Temperature
Thermal Resistance : Junction-case (One power stage in use)
Thermal Resistance : Junction-ambient (Device soldered on printed circuit board)
Peak Package Reflow Temperature During Reflow
(1)
,
(2)
T
J
R
THJC
R
THJA
T
PPRT
150
4.5
50
Note 2
°C
kΩ
kΩ
°C
Vcc
V
OUT
I
OUTC
I
OUTP
W
OFF
V
IN
I
IN
V
O
I
O
7.0
45
2.5
I
SCBMAX
70
V
CC
+ 0.3
1.0
V
CC
+ 0.3
1.0
V
V
A
A
mJ for 1ms
V
mA
V
mA
Symbol
Value
Unit
Notes
1. Pin soldering temperature limit is for 10 seconds maximum duration. Not designed for immersion soldering. Exceeding these limits may
cause malfunction or permanent damage to the device.
2. Freescale’s Package Reflow capability meets Pb-free requirements for JEDEC standard J-STD-020C. For Peak Package Reflow
Temperature and Moisture Sensitivity Levels (MSL),
Go to www.freescale.com, search by part number [e.g. remove prefixes/suffixes and enter the core ID to view all orderable parts. (i.e.
MC33xxxD enter 33xxx), and review parametrics.
33385
4
Analog Integrated Circuit Device Data
Freescale Semiconductor
ELECTRICAL CHARACTERISTICS
STATIC CHARACTERISTICS
STATIC CHARACTERISTICS
Table 3. Static Electrical Characteristics
Characteristics noted under conditions
7.0 V
≤
V
SUP
≤
18 V, - 40°C
≤
T
A
≤
125°C, GND = 0 V
unless otherwise noted. Typical
values noted reflect the approximate parameter means at
T
A
= 25°C
under nominal conditions unless otherwise noted.
Characteristic
SUPPLY VOLTAGE
Supply Voltage Range
JUNCTION TEMPERATURE
Junction Temperature Continuous (Continuous)
Junction Temperature Dynamical (Time limited)
OUTPUT CURRENT
Output Current Range
RESET BEHAVIOUR
Reset Changeable (at NRES-Pin)
Undervoltage Reset (Independent of NRES)
Active for V
CC
= 0V to V
CCPRO
UNDERVOLTAGE PROTECTION
Protection active for V
CC
=0V to V
CCPRO
OVER TEMPERATURE
Temperature Detection Threshold
SUPPLY CURRENT
Standby Current (without load) (NON1...NON4 = High Level)
5.15V
≥
V
CC
5.5V
≥
V
CC
Operating Mode (For 5.15V
≥
V
CC
) (Iout 1...4) = 2A
∆I
CC
During Reverse Output Current
(I
OUT
= - 5A on one output)
INPUTS (NONx, NCS, CLK, NRES, SDI)
Low Threshold
High Threshold
Hysteresis
Input Current (V
IN
= V
CC
)
Input Current (V
CC
>V
RES
& 0V<V
IN
< 0.9*V
CC
)
SERIAL DATA OUTPUT
High Output Level (I
SDO
= -2mA)
Low Output Level (I
SDO
= 3.2mA)
Tristate Leakage Current (NCS = HIGH, V
SDO
= 0V to V
CC
)
OUTPUTS (OUT 1...4)
Average Output Current
Output Peak Current
I
OUTA
I
OUTP
2.5
I
SCBMAX
A
A
V
SDOH
V
SDOL
I
SDOL
- 10
V
CC
- 0.4
0.4
10
V
V
µA
V
INL
V
INH
V
HYST
I
IN
I
IN
- 100
-0.3
0.7*V
CC
0.85
10
- 20
0.2*V
CC
V
CC
+ 0.3
V
V
V
µA
µA
I
CCSTB1
I
CCSTB2
I
CCOPM
∆I
CC
6.0
7.0
17
100
50
mA
mA
mA
mA
mA
T
OFF
155
185
°C
V
CCPRO
1.5
4.0
V
V
CC
V
CCRES
V
CCRES
3.35
5.5
3.95
V
V
I
OUT
I
SCBMAX
Α
T
J1
T
J2
- 40
150
185
°C
°C
V
CC
4.5
5.5
V
Symbol
Min
Typ
Max
Unit
33385
Analog Integrated Circuit Device Data
Freescale Semiconductor
5
京公网安备 11010802033920号
EEWORLD
