参数资料
型号: MC33580BAPNAR2
厂商: Freescale Semiconductor
文件页数: 28/38页
文件大小: 0K
描述: IC SW QUAD HI SIDE 15MOHM 24PQFN
标准包装: 1,200
类型: 高端
输入类型: SPI
输出数: 4
导通状态电阻: 15 毫欧
电源电压: 6 V ~ 27 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 24-PowerQFN
供应商设备封装: 24-PQFN(12x12)
包装: 带卷 (TR)
TYPICAL APPLICATIONS
INTRODUCTION
TYPICAL APPLICATIONS
INTRODUCTION
The 33580 can be configured in several applications. The figure below shows the 33580 in a typical lighting application.
V PWR
Voltage regulator
V DD
V DD
V DD
V PWR
V DD
VDD
33580
VPWR
V PW R
100nF
Microcontroller
V DD
I/O
I/O
I/O
I/O
I/O
SCLK
CS
I/O
SO
SI
A/D
A/D
10k
10k
100nF
10 k
10 k
10 k
10 k
10 k
10 k
10 k
10 k
10μF
NC
WAKE
FS
IN0
IN1
IN2
IN3
SCLK
CS
RST
SI
SO
TEMP
CSNS
FSI
GND
HS0
HS1
HS2
HS3
LOAD 0
55W
LOAD 1
55W
LOAD 2
55W
LOAD 3
55W
1k
R1
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.
33580
Analog Integrated Circuit Device Data
28
Freescale Semiconductor
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