A2557SEB

更新时间： 2024-11-08 22:23:19

品牌	Logo	应用领域
急速微 - ALLEGRO		外围驱动器驱动程序和接口接口集成电路
页数	文件大小	规格书
12页	177K
描述
PROTECTED QUAD LOW-SIDE DRIVER WITH FAULT DETECTION & SLEEP MODE

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技术参数
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A2557SEB 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	QLCC	包装说明：	QCCJ, LDCC28,.5SQ
针数：	28	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.89	Is Samacsys：	N
内置保护：	TRANSIENT; OVER CURRENT; THERMAL	驱动器位数：	4
接口集成电路类型：	AND GATE BASED PERIPHERAL DRIVER	JESD-30 代码：	S-PQCC-J28
JESD-609代码：	e0	长度：	11.5062 mm
湿度敏感等级：	3	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
最大输出电流：	0.3 A	标称输出峰值电流：	0.5 A
封装主体材料：	PLASTIC/EPOXY	封装代码：	QCCJ
封装等效代码：	LDCC28,.5SQ	封装形状：	SQUARE
封装形式：	CHIP CARRIER	峰值回流温度（摄氏度）：	240
电源：	5 V	认证状态：	Not Qualified
座面最大高度：	4.57 mm	子类别：	Peripheral Drivers
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
技术：	BIPOLAR	温度等级：	OTHER
端子面层：	TIN LEAD	端子形式：	J BEND
端子节距：	1.27 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	30	断开时间：	10 µs
接通时间：	10 µs	宽度：	11.5062 mm
Base Number Matches：	1

A2557SEB 数据手册

2557

PROTECTED QUAD LOW-SIDE DRIVER

WITH FAULT DETECTION & SLEEP MODE

The A2557xB, A2557xEB, and A2557xLB have been specifically

designed to provide cost-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.

Over-current protection for each channel has been designed into these

devices and is activated at a nominal 500 mA. It protects each output from

short circuits with supply voltages up to 32 V. 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 short or open load condition is detected, a

single FAULT output is turned on (active low). Similar devices, for operation

to 1.3 A, are available as the UDx2547B/EB.

A2557xLB

OUT

ENABLE

GROUND

OUT

GROUND

OUT

FAULT

OUT

Continuous or multiple overload conditions causing the channel tempera-

ture to reach approximately 165°C will result in an additional linear decrease

in the output current of the affected driver. If the fault condition is corrected,

the output stage will return to its normal saturated condition.

Dwg. PP-017-4

Note that the A2557xB (DIP) and the A2557xLB

(SOIC) are electrically identical and share a

common terminal number assignment.

The first character of the part number suffix determines the device

operating temperature range. Suffix ‘S-’ is the standard -20°C to +85°C;

suffix ‘E-’ is -40°C to +85°C; suffix ‘K-’ is for the industrial temperature

range of -40°C to +125°C. Package suffix ‘-B’ devices are 16-pin power

DIPs; suffix ‘-EB’ devices are 28-lead power PLCCs; and suffix ‘-LB’ are 16-

lead power wide-body SOICs for surface-mount applications. All packages

are of batwing construction to provide for maximum package power dissipa-

tion.

ABSOLUTE MAXIMUM RATINGS

Output Voltage, V_O.............................. 60 V

Over-Current Protected Output Voltage,

V_O..................................................... 32 V

Output Current, I_O......................... 500 mA*

FAULT Output Voltage, V_FLT............. 60 V

Logic Supply Voltage, V_CC................. 7.0 V

Input Voltage, V_Ior V_OE..................... 7.0 V

Package Power Dissipation,

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

Operating Temperature Range, T_A

Suffix ‘S-’ ...................... -20°C to +85°C

Suffix ‘E-’ ...................... -40°C to +85°C

Suffix ‘K-’ ................... -40°C to +125°C

Junction Temperature,

FEATURES

I 300 mA Output Current per Channel

I Independent Over-Current Protection &Thermal Limiting for Each Driver

I Output Voltage to 60 V

I Output SOA Protection

I Fault-Detection Circuitry for Open or Shorted Load

I Low Quiescent Current Sleep Mode

I Integral Output Flyback/Clamp Diodes

I TTL- and 5 V CMOS-Compatible Inputs

T_J............................................... +150°C*

Storage Temperature Range,

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

*Outputs are current limited at approximately

500 mA per driver and junction temperature

limited if higher current is attempted.

Complete part number includes a suffix to identify operating temperature

range (E-, K-, or S-) and package type (-B, -EB, or -LB). Always order by

complete part number, e.g., A2557KLB .

12 3 4 5 6 7...12

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与A2557SEB相关器件

型号	品牌	获取价格	描述	数据表
A2557SEB-T	ALLEGRO	获取价格	PROTECTED QUAD LOW-SIDE DRIVER WITH FAULT DETECTION and SLEEP MODE
A2557SEBTR	ALLEGRO	获取价格	And Gate Based Peripheral Driver, 0.5A, PQCC28, PLASTIC, MS-018AB, LCC-28
A2557SEBTR-T	ALLEGRO	获取价格	Buffer/Inverter Based Peripheral Driver, 4 Driver, 0.5A, BIPolar, PQCC28, LEAD FREE, PLAST
A2557SLB	ALLEGRO	获取价格	PROTECTED QUAD LOW-SIDE DRIVER WITH FAULT DETECTION & SLEEP MODE
A2557SLB-T	ALLEGRO	获取价格	PROTECTED QUAD LOW-SIDE DRIVER WITH FAULT DETECTION and SLEEP MODE
A2557SLBTR	ALLEGRO	获取价格	暂无描述
A2557SLBTR-T	ALLEGRO	获取价格	暂无描述
A2557XB	ETC	获取价格	PROTECTED QUAD LOW-SIDE DRIVER WITH FAULT DETECTION & SLEEP MODE
A2557XEB	ETC	获取价格	PROTECTED QUAD LOW-SIDE DRIVER WITH FAULT DETECTION & SLEEP MODE
A2557XLB	ETC	获取价格	PROTECTED QUAD LOW-SIDE DRIVER WITH FAULT DETECTION & SLEEP MODE

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