Datasheet > A2557SEBTR

A2557SEBTR

更新时间： 2024-01-11 21:38:14

品牌	Logo	应用领域
急速微 - ALLEGRO		栅驱动接口集成电路
页数	文件大小	规格书
12页	345K
描述
And Gate Based Peripheral Driver, 0.5A, PQCC28, PLASTIC, MS-018AB, LCC-28

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技术参数
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A2557SEBTR 技术参数

生命周期：	Obsolete	零件包装代码：	LCC
包装说明：	QCCJ,	针数：	28
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.82
内置保护：	TRANSIENT; OVER CURRENT; THERMAL	接口集成电路类型：	AND GATE BASED PERIPHERAL DRIVER
JESD-30 代码：	S-PQCC-J28	长度：	11.51 mm
功能数量：	4	端子数量：	28
最高工作温度：	85 °C	最低工作温度：	-20 °C
输出电流流向：	SINK	标称输出峰值电流：	0.5 A
封装主体材料：	PLASTIC/EPOXY	封装代码：	QCCJ
封装形状：	SQUARE	封装形式：	CHIP CARRIER
认证状态：	Not Qualified	座面最大高度：	4.37 mm
最大供电电压：	5.25 V	最小供电电压：	4.75 V
标称供电电压：	5 V	表面贴装：	YES
温度等级：	OTHER	端子形式：	J BEND
端子节距：	1.27 mm	端子位置：	QUAD
断开时间：	10 µs	接通时间：	10 µs
宽度：	11.51 mm	Base Number Matches：	1

A2557SEBTR 数据手册

A2557

Protected Quad Driver

with Fault Detection and Sleep Mode

Features and Benefits

▪ 300 mA output current per channel

Description

The A2557 has been specifically designed to provide cost-

▪ Independent overcurrent protection and thermal limiting

for each driver

▪ Output voltage to 60 V

effective solutions to relay-driving applications with up to

300 mA drive current per channel. They may also be used for

driving incandescent lamps in applications where turn-on time

is not a concern. Each of the four outputs will sink 300 mA in

the on state. The outputs have a minimum breakdown voltage

of 60 V and a sustaining voltage of 40 V. A low-power Sleep

Mode is activated with either ENABLE low or all inputs low.

In this mode, the supply current drops to below 100 μA.

▪ Output SOA protection

▪ Fault-detection circuitry for open or shorted load

▪ Low quiescent current Sleep Mode

▪ Integral output flyback/clamp diodes

▪ TTL- and 5 V CMOS-compatible inputs

Overcurrentprotectionforeachchannelhasbeendesignedinto

these devices and is activated at a nominal 500 mA. It protects

eachoutputfromshortcircuitswithsupplyvoltagesupto32V.

When an output experiences a short circuit, the output current

is limited at the 500 mA current clamp. In addition, foldback

circuitry decreases the current limit if an excessive voltage

is present across the output and assists in keeping the device

within its SOA (safe operating area). An exclusive-OR circuit

compares the input and output state of each driver. If either a

shortoropenloadconditionisdetected,asingleFAULToutput

is turned on (active low).

Packages:

Package EB, 28-pin PLCC

with internally fused pins

Package B, 16-pin DIP

with exposed tabs

Continued on the next page…

Package LB, 16-pin SOIC

with internally fused pins

Not to scale

Functional Block Diagram

FAULT

ENABLE

SLEEP

CONTROL

COMMON CONTROL

ONE OF FOUR DRIVERS

2.5 V

–

OUT

CURRENT

LIMIT

THERMAL

LIMIT

<<1

29317.16L

12 3 4 5 6 7...12

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与A2557SEBTR相关器件

型号	品牌	描述	获取价格	数据表
A2557SEBTR-T	ALLEGRO	Buffer/Inverter Based Peripheral Driver, 4 Driver, 0.5A, BIPolar, PQCC28, LEAD FREE, PLAST	获取价格
A2557SLB	ALLEGRO	PROTECTED QUAD LOW-SIDE DRIVER WITH FAULT DETECTION & SLEEP MODE	获取价格
A2557SLB-T	ALLEGRO	PROTECTED QUAD LOW-SIDE DRIVER WITH FAULT DETECTION and SLEEP MODE	获取价格
A2557SLBTR	ALLEGRO	暂无描述	获取价格
A2557SLBTR-T	ALLEGRO	暂无描述	获取价格
A2557XB	ETC	PROTECTED QUAD LOW-SIDE DRIVER WITH FAULT DETECTION & SLEEP MODE	获取价格

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