參數(shù)資料
型號(hào): MC33888
廠商: Motorola, Inc.
英文描述: Quad High-Side and Octal Low-Side Switch for Automotive
中文描述: 四高邊和八路低端汽車開(kāi)關(guān)
文件頁(yè)數(shù): 26/32頁(yè)
文件大小: 667K
代理商: MC33888
33888
26
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
Figure 7. Low-Side Short Circuit Detection and Analog Current Limit
Undervoltage Shutdown Requirements
All outputs turn off at some battery voltage below 6.0 V; For
the A version, the low side shutdown at a lower value,
V
PWRUV
.
however, as long as the level stays above 5.0 V, the internal
logic states within the device are designed to be sustained. This
ensures that when the battery level then rises above 6.0 V, the
device will return to the state that it was in prior to the excursion
between 5.0 V and 6.0 V (assuming that there was no SPI
communication or direct input changes during the event). If the
battery voltage falls to a level below 5.0 V, then the internal
logic is reinitialized and the device is then in the default state
upon the return of levels in excess of 6.0 V.
Output Voltage Clamping
Each output has an internal clamp to provide protection and
dissipate the energy stored in inductive loads. Each clamp
independently limits the drain-to-source voltage to the range
specified in the Power Outputs section of the
STATIC
ELECTRICAL CHARACTERISTICS
table beginning on
page 12. Also see
Figure 8
.
Figure 8. Low-Side Output Voltage Clamping
V
THRES
V
OFD(THRES)LS
2.0 V–4.0 V
Analog
Digital
+
+
HIGH = Fault
MOSFET ON
V
REF
V
PWR
R
L
OUT
33888
V
PWR
Time
GND
Current
Area (I
A
)
Clamp Energy
(E
J
= I
A
x V
CL
x t)
Drain Voltage
Drain-Source
Clamp Voltage
(V
CL
= 53 V)
Drain-Source
ON Voltage
(V
DS(ON)
)
Drain Current
(I
D
= 0.5 A)
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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MC33888PNB 制造商:FREESCALE-SEMI 功能描述:
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