参数资料
型号: MCZ33291LEG
厂商: Freescale Semiconductor
文件页数: 2/26页
文件大小: 0K
描述: IC SWITCH 8X LOSIDE W/SPI 24SOIC
标准包装: 30
类型: 低端
输入类型: SPI
输出数: 8
导通状态电阻: 1.1 欧姆
电流 - 输出 / 通道: 500mA
电流 - 峰值输出: 3A
电源电压: 9 V ~ 26.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 24-SOIC(0.295",7.50mm 宽)
供应商设备封装: 24-SOIC W
包装: 管件
VPWR 21
Output 0
PIN
+
Over-
voltage
Voltage
Regulator
Bias
53 V
24
16
OVD
GE
SFPD
15
RST
10 μ A
25 μ A
VDD
RB
SFPD
SFL
OT
SF
OF
Gate
Control
To Gates
1 –7
Outputs
1, 2, 11 –14, 23
22
CS
10
SCLK
3
+
10 μ A
Fault Timers
10 μ A +
CS
SCLK
SI
SO
CSI
CSBI
SPI
Interface
Logic
Open
Load
Detect
Short
Circuit
Detect
lLimit
+
-
RS
SI
4
10 μ A
Over--
temperature
Grounds
5 –8, 17 –20
SO
9
Serial D/O
Line Driver
Detect
From Detectors 1 –7
Figure 2. 33291L Simplified Block Diagram
Table 1. Fault Operation
SERIAL OUTPUT (SO) PIN REPORTS
Over-voltage
Over-temperature
Over-current
Output ON, Open Load Fault
Output OFF, Open Load Fault
DEVICE SHUTDOWNS
Overvoltage
Over-temperature
Over-current
Over-voltage condition reported.
Fault reported by Serial Output (SO) pin.
SO pin reports short to battery/supply or over-current condition.
Not reported.
SO pin reports output OFF open load condition.
Total device shutdown at V PWR = 28 V to 36 V. All outputs are latched off while the SPI register is reset
(cleared). Outputs can be turned back on with a new SPI command after V PWR has decayed below 26.5 V.
Only the output experiencing an over-temperature condition turns OFF.
Only the output experiencing an over-current shuts down at 1.0 A to 3.0 A after a 70 μ s to 250 μ s delay, with
SFPD pin grounded. All other outputs will continue to operate in a current limit mode with no shutdown if the
SFPD pin is at 5.0 V (so long as the individual outputs are not experiencing thermal limit conditions).
33291L
Analog Integrated Circuit Device Data
2
Freescale Semiconductor
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