Document Outline
- PIN FUNCTION DESCRIPTION
- 1, 2, 5, 6, 15, 16, 19, 20
- 10
- Vbat Supply Voltage
- Vbatc Supply Voltag
- 3, 4, 18, 17
- OUT1
- OUTPUT Channel 1
- OUT 2
- OUTPUT Channel 2
- 8, 13
- IN 1
- INPUT Channel 1
- IN 2
- INPUT Channel 2
- 7, 14
- Cur R1
- Current Recopy for Channel 1
- Cur R2
- Current Recopy for Channel 2
- 9, 12
- ST-1
- Status for Channel 1
- ST-2
- Status for Channel 2
- 10
- Vbatc
- VBAT Control
- 11
- GND
- GROUND
- NOTES :
- 1. Device mounted with minimum pcb dimensions.
- 2. Assuming a 150C maximum junction temperature.
- FUNCTIONAL TRUTH TABLE
XC33487
Preliminary
Automotive Dual
High Side Driver
Simplified Application Schematic
MCU
OUT-2
OUT-1
VBAT
IN-1
IN-2
ST2
Cur R1
Gnd
5V
A/D
I/O
I/O
I/O
Load
switch
+
-
10k
5V
Flasher Lite
PIN CONNECTIONS
1
2
3
5
4
6
7
8
9
10
20
11
12
13
14
15
16
17
18
19
Vbat
Vbat
Out1
Out1
Vbat
Vbat
Cur R1
In 1
St1
Vbatc
Vbat
Vbat
Out2
Out2
Vbat
Vbat
Cur R2
In 2
St2
Gnd
ST1
I/O
A/D
Cur R2
21W
21W
21W
21W
10k
1k
1k
DW SUFFIX
SO20WB Package
CASE 751D-05
Semiconductor Technical Data
MOTOROLA
Order Number: XC33487/D
Rev. 1.3, 06/2001
This document contains information on a new product under development. Motorola reserves the
right to change or discontinue this product without notice.
Motorola, Inc., 2001. All rights reserved.
TM
This device called "Flasher Lite" is a dual high side power switch
dedicated for automotive applications. In comparison with mechanical
relays, this device offers higher reliability as well as protection and
diagnostic features.
The device consists of two independent 25m
Rdson switches in a
surface mount package. It can be directly interfaced with a microcontroller
for control and diagnostic functions and includes a current recopy function.
The device is fully protected against overcurrents, short-circuits and
incorporates an overtemperature shutdown. It can be directly and
continuously supplied by the battery and offers a very low quiescent current
in standby mode.
Designed for Automotive Applications
Junction Temperature Range from - 40
C to 150
C
Operating Voltage Range from 8V to 40V
Reverse Battery protected up to -14V with no external components
Surface Mount Package, Thermally Enhanced
25mOhms max Rdson per Channel at 25
C
Independant Status Lines, one per channel
Overtemperature Protection with Hysteresis
Open Load Detection in On-State
Short-Circuit Protection
Loss of gnd, loss of Vbat protection
Independant Current Recopy, one per channel
Under Voltage Shutdown
ESD Protection 2kV
Current Limitation greater than 25A to Allow load Inrush Current
Standby Current less than 1uA at V
bat
=14V and ambiant temperature
XC33487
Automotive Dual High Side Driver
2
MAXIMUM RATINGS
NOTES :
1. Device mounted with minimum pcb dimensions.
2. Assuming a 150
C maximum junction temperature.
Figure 1. Block Diagram and Application Schematic
Ratings
Symbol
Value
Unit
ELECTRICAL RATINGS
Vbat Voltage with Respect to Gnd : Continuous/Pulse
Vbat
-14 to + 40
V
Out-1 & Out-2 Voltage with Respect of Gnd : Continuous/Pulse
Vout
-0.3 to 40
V
Out-1 to Vbat & Out-2 to Vbat voltage : Continuous/Pulse
Vout
40
V
IN-1, IN-2, ST-1, ST-2 Voltage : Continuous/Pulse
Vin
-0.3 to 7
V
Cur R1, Cur R2 Voltage : Continuous/Pulse
Vcr
-0.3 to 7
V
ESD all Pins
Vesd
+/-2000
V
Out-1, Out-2 DC Output Current
Ioutdc
8
Amp
Out-1, Out-2 Output Current : Pulse
Ioutp
40
Amp
IN-1, IN-2, ST-1, ST-2, Cur R1, Cur R2 Input Current
Iin
+/-5
mA
THERMAL RATINGS
Junction Temperature
Tj
- 40 to 150
C
Storage Temperature Range
Tst
- 65 to +150
C
Thermal Resistance Junction to Case
Rthjc
12
C/W
Thermal Resistance Junction to Ambient (note 1)
Rthja
60
C/W
Power Dissipation at Tcase 105
C (note 2)
Pd
3.75
W
Battery
MCU
Out-1
IN-1
Out-2
IN-2
Charge
Pump
Fault
Input
Trigger
Over
Temp
Over
Current
Out-1
GND
CHANNEL 1
CHANNEL 2
Current
Recopy
Cur R1
Cur R2
Current copy
resistor
Right side
21+21+....
A/D
I/O
V
bat
Cur R1
Flasher Lite
Cb
R
R
Left
Right
R
ST1
I/O
Out-2
Monitoring
R : 10k typical
Rcr : 500
to 1k
typical
Cb : 10nF to 470nF
St-2
St-1
5V
Rcr
Open
Load
V
batc
5V
10K
I/O
I/O
Cr 2
St-2
IN-2
I/O
XC33487
Automotive Dual High Side Driver
3
ELECTRICAL CHARACTERISTICS
(Vbatc and Vbatp from 9 to 16 V and junction temperature Tj from -40
to 150
C, unless otherwise noted
)
Description
Symbol
Characteristics
Unit
Conditions
min.
typ.
max.
Nominal Operating Voltage
V
bat
9
16
V
Functional Operating Voltage
V
bat
8
35
V
Under Voltage Threshold
V
uv
6
7
8
V
Vbat Standby Supply Current
I
stdby
1
V
bat
<14V & V
in
= 0V, T
j
= 25
C
Vbat Standby Supply Current
I
stdby
25
A
V
bat
<14V & V
in
= 0V, T
j
= 125
C
Supply Current in On State
I
on
8
20
mA
IN-1 & IN-2 @3.5V, no fault,
Vbat<14V
Drain to Source on Resistance
R
dson
17
22
m
Iout =4A,T
j
= 25
C
Drain to Source on Resistance
R
dson
22
30
m
Iout = 4A, T
j
= 125
C
High Current Limitation
I
lim
30
A
Vout>1V
Short Circuit Limitation
I
lim
10
Vout<1V
Hot Openload Threshold
I
ol
0.6
A
Output Body Diode Voltage
V
bd
0.7
V
Iout = -4A, Tj = 25C
Reverse Battery Drain to Source Voltage
V
rb
200
mV
Iout = -4A, Vbat = -14V, Tj = 125C
Vbat to Output Breakdown Voltage
V
dss
40
V
In-1 and In-2 @ 0V, Vout = 0,
Iout -0.25mA
Vbat to Out : Leakage Current
I
out-leak
10
A
Vin =0V, Vbat =40V, Vout=0V
Vin-1, Vin-2 : Input Voltage Low Threshold
V
il
1.5
V
Vin-1, Vin-2 : Input Voltage High Threshold
V
ih
3.5
V
Vin-1, Vin-2 : Input Voltage Hysteresis
V
ih
0.2
0.7
0.9
V
Vin-1, Vin-2 : Input Current
I
in
18
30
A
Vin-1, Vin-2 = 3.5V
Status Output Voltage
Vst
0.5
V
Ist = 1mA; Output in Fault
Thermal Shutdown
T
shut
150
C
Thermal Shutdown Hysteresis
T
hyst
10
C
Current Recopy Ratio
Cr
1/1000
Vout>Vbat -1V, Iout from 2A to 4A
Tj -40
C to 125
C, Vbat 9 to 16V
Current Recopy Ratio Accuracy
Cr-ac
-10
10
%
Vout >Vbat -1V, Iout from 2A to 4A
Tj -40
C to 125
C, Vbat 9 to 16V
Current Recopy Clamp Voltage At 10mA
Vclst
5.5
7
V
Iout=9A
Frequency Operation
Fop
150
Hz
Maximum Output Positive Slew Rate
Tr
0.01
0.2
0.5
V/
s
Maximum Output Negative Slew Rate
Tf
0.15
0.5
1.5
V/
s
Turn On delay time
Tdon
50
150
s
load = 6
, from Vin/2 to10% Vout
Turn Off delay time
Tdoff
70
150
s
load = 6
, from Vin/2 to 90% Vout
XC33487
Automotive Dual High Side Driver
4
FUNCTIONAL TRUTH TABLE
Conditions
IN1
IN2
OUT1
OUT2
St1
St2
Normal Operation
L
H
L
H
L
L
H
H
L
H
L
H
L
L
H
H
H
H
H
H
H
H
H
H
Undervoltage
X
X
L
L
H
H
Overtemperature Channel 1
Overtemperature Channel 2
Overtemperature Channel 1/Channel 2
H
X
H
X
H
H
L
X
L
X
L
L
L
H
L
H
L
L
Open Load Channel 1
Open Load Channel 2
H
X
X
H
H
X
X
H
L
H
H
L
Overcurrent Channel 1
Overcurrent Channel 2
H
X
X
H
X
X
X
X
H
H
H
H
PIN FUNCTION DESCRIPTION
Pin No.
Name/Function
Description
1, 2, 5, 6, 15, 16, 19, 20
10
V
bat
Supply Voltage
V
batc
Supply Voltag
These are the power supply pins of the device. These pins are
directly connected with the lead frame of the package and are tied to
the drain of the switching MOSFET. These pins can be directly
connected to the battery voltage. In addition to their supply functions,
these pins participate to the thermal behaviour of the device in
conducting the heat from the switching MOSFET to the printed circuit
board. V
batc
provide the supply voltage to the control die.
3, 4, 18, 17
OUT1
OUTPUT Channel 1
OUT 2
OUTPUT Channel 2
Pins 3 and 4 are the output 1 terminals. Pins 17 and 18 are the output 2
terminals. They are directly connected to the source of the power
MOSFET. The Rdson is 25m
max per output at 25C. Its value
increases up to 40m
at 150C junction temperature.
8, 13
IN 1
INPUT Channel 1
IN 2
INPUT Channel 2
These are the device input pins, which directly control their
associated output. The thresholds are CMOS compatible. When the
input is in low state, the associated output MOSFET is off. When
input is high, the MOSFET is turned on and the load is activated.
When both inputs are low, the device is in standby mode and its
supply current is less than 10uA for V
bat
up to 14V.
7, 14
Cur R1
Current Recopy for
Channel 1
Cur R2
Current Recopy for
Channel 2
These pins corresponds to a current recopy for each outputs. Their
high accuracy permit to allow a precise monitoring of the outputs
loads as well as to detect a failed lamp among several lamps.
An external resistor must be connected to these pins which can be
tied to a microcontroller A/D for analog measurements
9, 12
ST-1
Status for Channel 1
ST-2
Status for Channel 2
These pins are the channel 1 and 2 status. Their internal structure is
an open drain with an internal clamp at 6V. An external pull up
connected to the 5V is needed. When the device is in normal
condition the status is high. If open load or overtemperature occurs
on one channel, the associated output status will be pulled low.
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability
of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all
liability, including without limitation consequential or incidental damages. "Typical" parameters which may be provided in Motorola data sheets and/or specifications can and do
vary in different applications and actual performance may vary over time. All operating parameters, including "Typical" must be validated for each customer application by
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are registered trademarks of Motorola, Inc. Motorola, Inc. is
an Equal Employment Opportunity/Affirmative Action Employer.
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XC33487/D
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