Datasheet > A2987

A2987

更新时间： 2024-11-03 21:53:47

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器过电流保护
页数	文件大小	规格书
8页	86K
描述
8-CHANNEL SOURCE DRIVER WITH OVER-CURRENT PROTECTION

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中文翻译

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A2987 数据手册

2987

8-CHANNEL

SOURCE DRIVER

2987

8-CHANNEL SOURCE DRIVER

WITH OVER-CURRENT PROTECTION

Providing over-current protection for each of its eight sourcing

outputs, the UDN2987A and UDN2987LW drivers are used as an

interface between standard low-level logic and relays, motors, sole-

noids, LEDs, and incandescent lamps. The device includes thermal

shutdown and output transient protection/clamp diodes for use with

sustaining voltages to 35 V.

OUT

In these drivers, each channel includes a latch to turn OFF that

channel if the maximum channel current is exceeded. All channels are

disabled if the thermal shutdown is activated. A common FAULT

output is used to indicate either chip thermal shutdown or any over-

current condition. All outputs are enabled by pulling the common OE/

R input high. When OE/R is low, all outputs are inhibited and the eight

latches are reset.

OUT

Under normal operating conditions, each of eight outputs will

source in excess of 100 mA continuously at an ambient temperature of

25°C and a supply of 35 V. The over-current fault circuit will protect

the device from short-circuits to ground with supply voltages of up to

35 V.

GROUND

FAULT

OE/R

OEN

SENSEN

Dwg. PP-067

The inputs are compatible with 5 V and 12 V logic systems—TTL,

Schottky TTL, DTL, PMOS, and CMOS. In all cases, the output is

switched ON by an active high input level. The UDN2987A is supplied

in a 20-pin dual in-line plastic package; the UDN2987LW is supplied in

a 20-lead small-outline plastic package.

Note that the UDN2987A (DIP) and the UDN2987LW

(SOIC) are electrically identical and share a common

terminal number assignment.

ABSOLUTE MAXIMUM RATINGS

at T_A= +25°C

FEATURES

Driver Supply Voltage, V_S..................... 35 V

Output Sustaining Voltage, V_CE(sus)...... 35 V

■ 350 mA Output Source Current

■ Over-Current Protected

Continuous Output Current,

I_OUT........................................ -500 mA*

■ Internal Ground Clamp Diodes

■ Output Breakdown Voltage 35 V, Minimum

■ TTL, DTL, PMOS, or CMOS Compatible Inputs

■ Internal Thermal Shutdown

FAULT Output Voltage, V_CE................. 35 V

FAULT Output Current, l_C................. 30 mA

Input Voltage, V_IN................................. 15 V

Package Power Dissipation,

■ Automotive Capable

P_D........................................ See Graph

Operating Temperature Range,

Always order by complete part number:

T_A................................. -20°C to +85°C

Storage Temperature Range,

Part Number

UDN2987A

Package

T_S............................... -55°C to +150°C

20-Pin DIP

* Outputs are disabled at approximately -500 mA

per driver.

UDN2987LW

20-Lead Wide-Body SOIC

12 3 4 5 6 7 8

中文翻译

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