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參數(shù)資料
| 型號： | 2878 |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | QUAD HIGH-CURRENT DARLINGTON SWITCHES |
| 中文描述： | 四大電流達林頓開關 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 222K |
| 代理商： | 2878 |
These quad Darlington arrays are designed to serve as interface
between low-level logic and peripheral power devices such as sole-
noids, motors, incandescent displays, heaters, and similar loads of up to
320 W per channel. Both integrated circuits include transient-suppres-
sion diodes that enable use with inductive loads. The input logic is
compatible with most TTL, DTL, LSTTL, and 5 V CMOS logic.
Type UDN2878W and UDN2879W 4 A arrays are identical except
for output-voltage ratings. The former is rated for operation to 50 V
(35 V sustaining), while the latter has a minimum output breakdown
rating of 80 V (50 V sustaining). The lower-cost UDN2879W-2 is
recommended for applications requiring load currents of 3 A or less.
These less expensive devices are identical to the basic parts except for
the maximum allowable load-current rating.
For maximum power-handling capability, all drivers are supplied
in a 12-pin single in-line power-tab package. The tab needs no insula-
tion. External heat sinks are usually required for proper operation of
these devices.
FEATURES
I
Output Currents to 4 A
I
Output Voltages to 80 V
I
Loads to 1280 W
I
TTL, DTL, or CMOS Compatible Inputs
I
Internal Clamp Diodes
I
Plastic Single In-Line Package
I
Heat-Sink Tab
QUAD HIGH-CURRENT
DARLINGTON SWITCHES
Always order by complete part number:
Part Number
Max. I
C
5.0 A
Max. V
CEX
50 V
Min. V
CE (sus)
35 V
UDN2878W
UDN2879W
5.0 A
80 V
50 V
UDN2879W-2
4.0 A
80 V
50 V
D
2
2878
AND
2879
ABSOLUTE MAXIMUM RATINGS
at +25
°
C Free-Air Temperature
for any driver
(unless otherwise noted)
Output Voltage, V
CEX
(UDN2878W) . . . . . . . . . . . . . . . .
50 V
(UDN2879W
& UDN2879W-2) . .
80 V
Output Current, l
C
(UDN2878W & UDN2879W) . . .
5.0 A
(UDN2879W-2) . . . . . . . . . . . . .
4.0 A
Input Voltage, V
IN
. . . . . . . . . . . . . . . .
15 V
Input Current, I
IN
. . . . . . . . . . . . . . .
25 mA
Supply Voltage, V
S
. . . . . . . . . . . . . . .
10 V
Total Package Power Dissipation,
P
D
. . . . . . . . . . . . . . . . . . . .
See Graph
Operating Ambient Temperature Range,
T
A
. . . . . . . . . . . . . . . .
-20
°
C to +85
°
C
Storage Temperature Range,
T
S
. . . . . . . . . . . . . . .
-55
°
C to +150
°
C
Dwg. No. A-11,974
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