收藏本站
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
SHORTED LOAD FAULT
A shorted load (overcurrent) fault can be caused by any
output being shorted directly to supply or an output causing
the device to current limit (linear short).
There are two safety circuits progressively in operation
during load short conditions providing system protection:
1. The device’s output current is monitored in an analog
fashion using SENSEFET ? approach and current
Drain-to-Source Clamp
Voltage (V CL = 45 V)
Drain Current
(I D = 0.3 A)
Drain Voltage
Clamp Energy
(E J = I A x V CL )
limited.
2. The device’s output thermal limit is sensed and when
attained causes only the specific faulted output to shut
down. The output will remain off until cooled. The
device will then reassert the output automatically. The
cycle will continue until the fault is remove or the
command bit instructs the output off.
UNDERVOLTAGE SHUTDOWN
An undervoltage V DD condition will result in the global
Drain-to-Source ON
Voltage (V DS(ON) )
GND
V BAT
Drain-to-Source ON
Voltage (V DS(ON) )
GND
Current
Area (I A )
Current
Area (I A )
Time
Time
Clamp Energy
(E J = I A x V CL )
shutdown of all outputs. The undervoltage threshold is
between 3.9 V and 4.6 V. When V DD goes below the
threshold, all outputs are turned OFF and the Fault Status
(FS) register is cleared. As V DD returns to normal levels, the
FS register will resume normal operation.
Source Current
(I S = 0.3 A)
Source Clamp Voltage
(V CL = -20 V)
Source Voltage
An undervoltage condition at the VPWR pin will not cause
output shutdown and reset. When V PWR is between 5.5 V
and 9.0 V, the output will operate per the command word.
However, the status as reported by the serial data output
(DO) pin may not be accurate below 9.0 V V PWR . Proper
operation at V PWR voltages below 5.5 V cannot be
guaranteed.
OUTPUT VOLTAGE CLAMP
Each output of the 33880 incorporates an internal voltage
clamp to provide fast turn-off and transient protection of each
output. Each clamp independently limits the drain-to-source
voltage to 45 V for low-side drive configurations and -20 V for
high-side drive configurations (see Figure 25 ). The total
energy clamped (E J ) can be calculated by multiplying the
current area under the current curve (I A ) times the clamp
voltage (V CL ).
Characterization of the output clamps, using a single pulse
non-repetitive method at 0.3 A, indicates the maximum
Figure 25. Output Voltage Clamping
SPI CONFIGURATIONS
The SPI configuration on the 33880 device is consistent
with other devices in the OSS family. This device may be
used in serial SPI or parallel SPI with the 33291 and 33298.
Different SPI configurations may be provided. For more
information, contact Analog Products Division.
REVERSE BATTERY
The 33880 has been designed with reverse battery
protection on the VPWR pin. However, the device does not
protect the load from reverse battery. During the reverse
battery condition, current will flow through the load via the
output MOSFET substrate diode. Under this circumstance
relays may energize and lamps will turn on. If load reverse
battery protection is desired, a diode must be placed in series
with the load.
energy to be 50 mJ at 150 ° C junction temperature per output.
33880
Analog Integrated Circuit Device Data
18
Freescale Semiconductor
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
KIT33886DHEVB KIT EVAL FOR MC33886 H-BRIDGE
KIT33887EKEVBE BOARD EVALUATION FOR MC33887
KIT33887PNBEVB KIT EVAL 33887 5A H-BRIDGE PQFN
KIT33905D5EKEVBE KIT EVALUATION FOR MC33905
KIT33912EVME KIT EVALUATION FOR MC33912
KIT33932VWEVBE KIT EVALUATION FOR MC33932
KIT33982CEVBE KIT EVAL 33982 HIGH SIDE SWITCH
KIT33984CEVBE KIT EVAL 33984 HIGH SIDE SWITCH
相关代理商/技术参数
KIT33883DWEVB 功能描述:KIT EVAL FOR MC33883 PRE-DRIVER RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 传感器类型:CMOS 成像，彩色（RGB） 传感范围:WVGA 接口:I²C 灵敏度:60 fps 电源电压:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相关产品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP
KIT33886DHEVB 功能描述:电源管理IC开发工具 33886 PWR H-BRIDGE KIT RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
KIT33887DWBEVB 功能描述:电源管理IC开发工具 33887DWB FIESTA EVAL KIT RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
KIT33887EKEVBE 功能描述:电源管理IC开发工具 33887DWB FIESTA EVAL KIT RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
KIT33887EKEVBE 制造商:Freescale Semiconductor 功能描述:5.2A 20KHz Inductive load driver w/ Curr
KIT33887PNBEVB 功能描述:电源管理IC开发工具 33887 FIESTA PNB KIT RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
KIT33903BD3EVBE 功能描述:界面开发工具 3V DUAL LIN EVB KIT RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V
KIT33903BD5EVBE 功能描述:界面开发工具 5V DUAL LIN EVB KIT RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V