参数资料
型号: MCZ33198EFR2
厂商: Freescale Semiconductor
文件页数: 14/17页
文件大小: 0K
描述: IC TMOS DRIVER AUTO HISIDE 8SOIC
标准包装: 2,500
配置: 高端
输入类型: 非反相
延迟时间: 1ms
配置数: 1
输出数: 1
电源电压: 7 V ~ 20 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOICN
包装: 带卷 (TR)
FUNCTIONAL DESCRIPTION
INTRODUCTION
Pin 2, which is normally connected to a resistor, can
sustain a reverse battery operation, providing that the DRN
resistor is higher than 3.3K. A 1K resistor at pin 1 is also
necessary to limit the reverse current flowing through the
MOSFET body diode.
OPERATION
When module GND is disconnected, and if the VBAT
connection is still present, pin 3 of the MC33198 goes to
about 2/3 of V BAT, if additional circuitry is not inserted. With
R1/Q1, the Gate/Source voltage of the MOSFET is shorted
as soon as pin 3 voltage rises above GND level. See Figure
19, 33198 GND Disconnection Circuitry
5V
Vbat
5
Vbat
Device drive
circuitry and
6
MC33198
4
interface
IN
7
1
LOAD
Module Gnd
8
C
3
Q1
R1
Additional circuitry
to present MOSFET
turn-on in case of module
Gnd disconnection
R1 = 3,3K
Q1 = 2N2222
Figure 19. 33198 GND Disconnection Circuitry
33198
Analog Integrated Circuit Device Data
14
Freescale Semiconductor
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