MC33143DW Freescale, MC33143DW Datasheet - Page 6

• Manufacturer Part Number: MC33143DW
• Manufacturer: Freescale

Specifications of MC33143DW

• Switch Type: High Side
• Power Switch Family: MC33143
• Input Voltage: -0.3 to 7V
• Power Switch On Resistance: 140mOhm
• Output Current: 3A
• Number Of Outputs: Dual
• Mounting: Surface Mount
• Supply Current: 4.2mA
• Package Type: SOIC W
• Operating Temperature (min): -40C
• Operating Temperature Classification: Automotive
• Pin Count: 24
• Power Dissipation: 4.2W
• Lead Free Status / RoHS Status: Not Compliant

Normal
Output to Gnd Short
Open Load
Output to V Pwr
Short
Over Temperature
V Pwr Overvoltage
“Sleep”/Under
Voltage Mode,
CEN Low
CEN Low
Device Condition
6
Pin
14
15
23
SFPD
GTST
INT
Symbol
High
High
High
HIgh
High
High
High
Low
Low
Low
Low
Low
Low
Low
In
This is a Short Fault Protect Disable (SFPD) input; which when logic high disables the internal current
limit timer preventing OUT1–2 from latching OFF when confronted with an overcurrent condition. The
condition of SFPD does not affect fault reporting. Current and thermal limit remain active when the
SFPD pin is logic high. Having the SFPD pin logic high facilitates the device to drive incandescent lamp
loads with peak in–rush currents in excess of three amperes. When SFPD is logic low, an overcurrent
demand will latch OFF only the output affected. The device will then automatically begin active
re–enabling of the corresponding output affected for the duration of the overcurrent condition. SFPD has
an internal active pull–down which affords a floating input pin condition to be conservatively interpreted
as a logic low. A 10 k resistor between SFPD and the system CPU may improve the FMEA score if
SFPD is externally shorted to OUT2. SFPD should be connected to Gnd or V DD for the desired
operating mode and not be left “floating”.
The Gate TeST (GTST) pin is used to stress the devices DMOS gates during testing operations. This pin
should normally be connected to ground in the application.
The INTerrupt pin INT is active logic low and indicates the presence of a fault on either the output. INT
can be paralleled with additional fault pins and used as a system CPU interrupt to indicate the presence
of a fault. The system CPU can then read STAT1–2 to determine the specific type of fault occurring. INT
will be logic high during normal operation. A logic low will result if a fault occurs on either OUT1 or
OUT2. INT has an internal active pull–up and requires no external pull–up resistor to be used. The INT
output has sufficient current drive capability to afford paralleling of up to five INT pins. A 10 k resistor
between INT and the system CPU may improve the FMEA score if INT is externally shorted to OUT1.
This pin should be left unconnected if the feature is not used.
Freescale Semiconductor, Inc.
For More Information On This Product,
High/Low
High
High
High
High
High
Low
Low
Low
Low
Low
Low
Low
Low
Out
PIN FUNCTION DESCRIPTION
Go to: www.freescale.com
Figure 3. Function Table
High–Z
High–Z
STAT
High
High
High
Low
Low
Low
Low
Low
Low
Low
Low
Low
MC33143
Normal OFF
Normal ON
Normal OFF
Output in active retry mode.
Normal ON when short is
removed.
Normal OFF
Normal ON
Normal OFF
Normal ON
Normal OFF
Output disabled. Output Retries
with no thermal limit.
Normal OFF
Output disabled. Will reset with
no overvoltage.
Output disabled.
Output disabled.
Output Condition
Description
(continued)
MOTOROLA ANALOG IC DEVICE DATA
Normal
Normal
Normal
Short fault reported. Fault
clears when short is removed.
“OFF” open fault reported. Fault
clears when load is connected.
“ON” open fault reported. Fault
clears when load is connected.
“OFF” open fault reported. Fault
clears when short is removed.
“ON” open fault reported. Fault
clears when short is removed.
Thermal fault reported. Fault
clears with no thermal limit.
Thermal fault reported. IN low
and no thermal limit required to
clear the fault.
Overvoltage fault reported.
Fault clears with no
overvoltage.
Overvoltage fault reported.
Fault clears with no
overvoltage.
STAT tri–stated, no faults
reported.
STAT tri–stated, no faults
reported.
STAT Condition