Wide Input Voltage, Adjustable Frequency, 2 Amp
Non-Synchronous Buck Regulator with Enable and NPOR
A8587
16
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
PACKAGE OUTLINE DRAWING
For Reference Only – Not for Tooling Use
(Reference DWG 2860)
Dimensions in millimeters –NOT TO SCALE
Exact case and lead configuration at supplier discretion within limits shown
10
10
2
1
2
1
A
A
B
D
C
B
1.64
2.38
0.30
1
10
0.50
0.85
3.10
C
C0.08
11X
C
SEATING
PLANE
D
0.25
+0.05
–0.07
0.05
0.00
2.38 NOM
1.65 NOM
0.5 BSC
0.2 REF
0.75 ±0.05
3.00 ±0.15
3.00 ±0.15
0.40 ±0.10
PCB Layout Reference View
Terminal #1 mark area
Exposed thermal pad (reference only, terminal #1 identifier appearance at supplier discretion)
Coplanarity includes exposed thermal pad and terminals
Reference land pattern layout (reference IPC7351 SON50P300X300X80-11WEED3M);
all pads a minimum of 0.20 mm from all adjacent pads; adjust as necessary to meet
application process requirements and PCB layout tolerances; when mounting on a
multilayer PCB, thermal vias at the exposed thermal pad land can improve thermal
dissipation (reference EIA/JEDEC Standard JESD51-5)
Figure 5: Package EJ, 10-Pin DFN with Exposed Thermal Pad
Wide Input Voltage, Adjustable Frequency, 2 Amp
Non-Synchronous Buck Regulator with Enable and NPOR
A8587
17
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
For the latest version of this document, visit our website:
www.allegromicro.com
Revision History
Number Date Description
March 25, 2016 Initial release.
1 October 4, 2016 Removed “Operating at Low Input Voltages” section (page 9 and 15).
2 January 17, 2017
Corrected EJ package outline drawing (page 16).
Updated bootstrap capacitor value (page 4).
Copyright ©2017, Allegro MicroSystems, LLC
Allegro MicroSystems, LLC reserves the right to make, from time to time, such departures from the detail specifications as may be required to
permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that
the information being relied upon is current.
Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of
Allegro’s product can reasonably be expected to cause bodily harm.
The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, LLC assumes no responsibility for its
use; nor for any infringement of patents or other rights of third parties which may result from its use.

A8587KEJTR-T

Mfr. #:
Manufacturer:
Description:
IC REG BUCK ADJUSTABLE 2A 10DFN
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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