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參數(shù)資料
| 型號(hào)： | NCV7601P |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | Quad Driver |
| 中文描述： | 1.8 A 4 CHANNEL, AND GATE BASED PRPHL DRVR, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁(yè)數(shù)： | 6/8頁(yè) |
| 文件大?。?/td> | 55K |
| 代理商： | NCV7601P |
NCV7601
http://onsemi.com
6
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 9. Typical Input Threshold Voltage, V
CC
= 5.0 V
-40
V
I
1.28
Temperature (
°
C)
1.33
1.35
1.37
-20
0
20
40
60
80
100
120
140
1.30
1.36
1.34
1.32
1.31
1.29
I
OUT
= 100 mA
I
OUT
= 10 mA
DETAILED OPERATING DESCRIPTION
The NCV7601 Quad Driver consists of four identical
driver sections with output clamp diodes and a common bias
generator.
Each driver input (Figure 2) is buffered by a PNP emitter
follower for reduced input bias current and features a nominal
18 V Zener input clamp for transient protection. Each input
is compared to a separate temperature-compensated
reference, which provides a nominal 1.35 V comparison
threshold. With the addition of an external series resistor, the
inputs can be interfaced directly to +14 V automotive system
voltages. Floating inputs are interpreted as high.
Each driver output NPN is supplied with a substantially
fixed base current from the +5.0 V V
CC
pin by a pre-driver.
Each pre-driver multiplies a temperature-compensated
reference current when its control input and the common
enable input is high. Current limit and thermal limit circuits
act independently within the pre-driver to reduce base drive
to the output NPN. The independent limit operation allows
the driver to handle inrush current from lamp loads while
protecting the driver from fault conditions that exist long
enough to raise the temperature at that driver to its thermal
limit
threshold.
Each
temperature-sensing device located in close proximity to
the output NPN. The separate sensing devices are
strategically placed at the corners of the die to reduce
interaction between them.
driver
has
its
own
APPLICATIONS INFORMATION
The NCV7601 Quad Driver interfaces high power loads
to low power control signals. The four open-collector
NAND drivers with common ENABLE are TTL, DTL and
CMOS compatible. Any number of drivers may be parallel
connected to drive loads greater than each driver’s nominal
capability. Power for the Quad’s control logic and output
pre-drive is supplied from the +5.0 V V
CC
pin, and is
proportional to the number of active inputs. Minimum
standby power is consumed when the ENABLE input is low.
Each driver is individually protected with current limit and
thermal limit circuitry. Drivers with fault loads are protected
while drivers with normal loads continue to operate,
provided that sufficient heat sinking maintains a good
thermal gradient between all drivers.
Clamp diodes at each driver output provide a means for
managing inductive load transients. The common cathode
pin for each driver pair can be connected to the load supply
voltage for suppression of minor transients resulting from
wiring harness inductances. The use of an external Zener
diode or TVS (Transient Voltage Suppressor) device such as
the ON Semiconductor 1.5SMCXXXAT3 series is strongly
recommended when driving large inductive loads or when
load supply transients can be expected to exceed the Quad
Driver’s VCE
(SUS)
rating. The use of a TVS device provides
an additional benefit by reducing the decay time of inductive
loads. More information on safeguarding the Quad’s output
NPN’s and about transient suppression methods and device
selection is available in ON Semiconductor application
notes “Understanding Power Transistors Breakdown
Parameters”, document number AN1628/D, “A Review of
Transients and their Means Of Suppression”, document
number AN843/D and “Transient Power Capability of
Zener Diodes”, document number AN784/D. All
application notes are available through the Literature
Distribution
Center
or
http://www.onsemi.com.
via
our
website
at
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