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Motorola Electronic Components Datasheet

MC33288 Datasheet

Solid State Relay

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Freescale Semiconductor, Inc.
MOTOROLA
Semiconductor Technical Data
Order Number: MC33288/D
Rev. 4.8, 06/2001
Advance Information
Solid State Relay for Automotive
Flasher Applications
MC33288
SOLID STATE RELAY FOR
AUTOMOTIVE FLASHER
APPLICATIONS
SEMICONDUCTOR
TECHNICAL DATA
This device is a Dual High Side Power Switch dedicated for automotive flasher
applications. In comparison with mechanical solutions, this device offers higher
reliability as well as protection and diagnostic features.
The device consists of two 25mRdson fully protected high side switches, in a
surface mount power package. It interfaces directly with a microcontroller and
includes a current recopy function in order to allow the detection of a failed lamp in
the application.
Designed for Automotive Flasher Applications
Junction Temperature Range from - 40°C to 150°C
Operating Voltage Range from 8V to 35V
Maximum Breakdown Voltage greater than 40V
Protected in case of loss of ground
Surface Mount Power Package
25mRdson per Channel at 25°C
8Amps Nominal Current per Channel
1.2W Warning Lamp Driver
Overtemperature Protection with Hysteresis
Open Load Detection in On-State
Short-Circuit Protection
Overload Current Protection
Current Recopy to Monitor Lamp Output Current
Under Voltage Shutdown
ESD Protection 2kV
Standby Current less than 10µA at Vbat less than 14V
DH SUFFIX
HSOP20 Package
CASE 979-04
PIN ASSIGNMENT
Vbat
GND 1
21
20 Wlp
Cur R 2
IN-1 3
NC 4
DNC* 5
Out-1 6
Out-1 7
Out-1 8
NC 9
NC 10
* Do Not Connect
Heat sink
21
Vbat
19 Status
18 IN-2
17 NC
16 DNC*
15 Out-2
14 Out-2
13 Out-2
12 NC
11 NC
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
MC33288DH
TA=-40° to +125°C
HSOP20
MC33288DHR2
TA=-40° to +125°C
HSOP20
Buzzer
Turn
switch
Warning
switch
dashboard
direction indicator
5V
I/O
I/O
MCU
I/O
A/D
Simplified Application Schematic
5V
10k
IN-1
VBAT
OUT-1
+
-
IN-2
ST
Cur R
MC33288
Static Flasher
21W 21W
5W
OUT-2
Car left side lamps
dashboard
trailer indicator
Gnd
Wlp
1.2W
21W 21W
5W
Car right side lamps
Trailor
21W 5W
21W 5W
This document contains information on a new product. Specifications and
information herein are subject to change without notice.
© Motorola, Inc., 2001. All rights reserved. For More Information On This Product,
Go to: www.freescale.com
TM


Motorola Electronic Components Datasheet

MC33288 Datasheet

Solid State Relay

No Preview Available !

Freescale Semiconductor, Inc.
MC33288
PINS FUNCTION DESCRIPTION
Pin No.
TAB
6,7,8
13,14,15
3
18
19
20
2
4, 9, 10, 11, 12, 17
5, 16
11
Name/Function
Vbat
Supply Voltage
OUT1
OUTPUT Channel 1
OUT 2
OUTPUT Channel 2
IN 1
INPUT Channel 1
IN 2
INPUT Channel 2
Status
Status for both
Channels
Wlp
Warning Lamp Output
Cur R
Load Current Sense
NC
Not Connected
DNC
Do Not Connect
GND
GROUND
Description
The backside TAB is connected to the power supply of the
MC33288DH. In addition to its supply function, this pin contributes to
the thermal behaviour of the device by conducting the heat from the
switching MOSFET to the printed circuit board.
Pins 6,7,8 are the source of the output1 25mOhm MOSFET1. Pins
13,14,15 are source of the output 2 25mOhm MOSFET2. They deliver
current to the connected loads and are respectively controlled via the
IN1 and IN2 pins. These outputs are current limited and thermally
protected.
These are the device input pins which directly control their associated
outputs. The levels are CMOS compatible. When the input is a logic
low, the associated output MOSFET is in the off state. 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 reduced. Each input pin has an internal active pull
down, so that it will not float if disconnected.
The Fault output is an open drain indication that goes active low when
a fault mode (Openload, Overtemp) is detected by the device on
either one channel or both simultaneously. Its internal structure is an
open drain architecture with an internal clamp at 6V. An external pull
up resistor connected to Vdd (5V) is needed. See Functional Truth
Table.
This pin is the source of a 3.2 Ohm MOSFET. This output is current
limited and thermally protected. It delivers current through the
connected load when both IN1 and IN2 inputs are logic high. It is usually
used as a warning lamp driver for Flasher application.
The Current Sense pin deliver a ratioed amount (1/1000) of the sum
of the currents that can be used to generate signal ground referenced
output voltages for use by the microcontroller.
These pins are not used.
These pins must not be connected.
This is the Ground pin of the device.
SolidFSotarteMRoerleayIfnofroArmutoamtiootniveOFnlaTshheisr APprpoldicuactito,ns
Go to: www.freescale.com
2


Part Number MC33288
Description Solid State Relay
Maker Motorola
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MC33288 Datasheet PDF






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