A2557SEB-T Allegro Microsystems Inc, A2557SEB-T Datasheet - Page 2

• Manufacturer Part Number: A2557SEB-T
• Manufacturer: Allegro Microsystems Inc

Specifications of A2557SEB-T

• Switch Type: Low Side
• Power Switch Family: A2557
• Input Voltage: 7V
• Output Current: 300mA
• Number Of Outputs: 4
• Mounting: Surface Mount
• Supply Current: 30mA
• Package Type: PLCC
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Pin Count: 28
• Lead Free Status / Rohs Status: Compliant

A2557
Description (continued)
Continuous or multiple overload conditions causing the channel
temperature 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.
Selection Guide
A2557EB-T*
A2557EEBTR-T*
A2557ELBTR-T*
A2557KB*
A2557KB-T*
A2557KEBTR-T*
A2557KLBTR*
A2557KLBTR-T
A2557SB-T*
A2557SEBTR-T*
A2557SLBTR-T*
*Variant is in production but has been determined to be LAST TIME BUY. This classification indicates that the variant is obsolete and notice has been
given. Sale of the variant is currently restricted to existing customer applications. The variant should not be purchased for new design applications
because of obsolescence in the near future. Samples are no longer available. Status date change November 2, 2009. Deadline for receipt of LAST
TIME BUY orders is April 30, 2010.
Part Number
Pb-free
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
–
–
16-pin DIP, exposed tabs
28-lead PLCC
16-lead SOIC
16-pin DIP, exposed tabs
16-pin DIP, exposed tabs
28-lead PLCC
16-lead SOIC
16-lead SOIC
16-pin DIP, exposed tabs
28-lead PLCC
16-lead SOIC
Package
with Fault Detection and Sleep Mode
The packages offer fused leads for enhanced thermal dissipation.
Package B is a 16-pin power DIP with exposed tabs, EB is a 28-
lead power PLCC, and LB is a 16-lead power wide-body SOIC
for surface-mount applications. The lead (Pb) free versions have
100% matte tin leadframe plating.
25 pieces per tube
800 pieces per reel
1000 pieces per reel
25 pieces per tube
25 pieces per tube
800 pieces per reel
1000 pieces per reel
1000 pieces per reel
25 pieces per tube
800 pieces per reel
1000 pieces per reel
Protected Quad Driver
Packing
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
Ambient Temperature
–40 to 125
–40 to 85
–20 to 85
(°C)
2