MC33580BAPNA Freescale, MC33580BAPNA Datasheet - Page 28

• Manufacturer Part Number: MC33580BAPNA
• Manufacturer: Freescale

Specifications of MC33580BAPNA

• Switch Type: High Side
• Power Switch Family: MC33580
• Input Voltage: 6 to 27V
• Power Switch On Resistance: 30mOhm
• Number Of Outputs: 4
• Mounting: Surface Mount
• Supply Current: 20mA
• Package Type: Power QFN
• Operating Temperature (min): -40C
• Operating Temperature Classification: Automotive
• Pin Count: 24
• Lead Free Status / RoHS Status: Compliant

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33580
TYPICAL APPLICATIONS
INTRODUCTION
The 33580 can be configured in several applications. The figure below shows the 33580 in a typical lighting application.
Automotive lamps do not tolerate high voltages very well. Tests of a few lamps indicate that failures can occur
when 18V is applied for a few seconds. Consequently, PWM switching reduces the effective RMS voltage in
order to drive bulbs safety.
For example, to maintain the power dissipation associated with a 13V battery at 100% duty cycle, the duty
cycle would be adjusted to (13/18)², or 52%, when the battery is at 18V.
The loads must be chosen in order to guarantee the device normal operating condition for junction tempera-
ture from -40 to 150 °C. In case of permanent short-circuit conditions, the duration and number of activation
cycles must be limited with a dedicated MCU fault management using the fault reporting through the SPI.
Microcontroller
V
V
V
PWR
DD
DD
SCLK
A/D
A/D
I/O
SO
I/O
I/O
I/O
I/O
I/O
CS
SI
Voltage regulator
10k
V
DD
10k
V
TYPICAL APPLICATIONS
PWR
1k
10 k
10 k
10 k
10 k
10 k
10 k
10 k
10 k
100nF
INTRODUCTION
V
DD
R1
10µF
V
DD
CSNS
VDD
TEMP
WAKE
IN1
SCLK
RST
SO
FSI
FS
IN2
IN3
CS
SI
IN0
NC
33580
GND
VPWR
Analog Integrated Circuit Device Data
HS1
HS0
HS2
HS3
V
PWR
Freescale Semiconductor
LOAD 0
LOAD 1
LOAD 2
LOAD 3
55W
55W
55W
55W
100nF