A4447 Просмотр технического описания (PDF) - Allegro MicroSystems
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A4447 Datasheet PDF : 9 Pages
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A4447
High Voltage Step Down Regulator
Absolute Maximum Ratings
Characteristic
Symbol
Conditions
Min.
Typ.
Max. Units
VIN Supply Voltage
VIN
–
–
50
V
VBIAS Input Voltage
VBIAS
–0.3
–
7
V
SW Switching Voltage
VS
–1
–
–
V
ENB Input Voltage Range
VENB
–0.3
–
7
V
Operating Ambient Temperature Range
TA
–20
–
85
°C
Junction Temperature
TJ(max)
–
–
150
°C
Storage Temperature
Tstg
–55
–
150
°C
*Output current rating may be limited by duty cycle, ambient temperature, and heat sinking. Under any set of conditions, do not exceed
the specified current ratings, or a junction temperature, TJ, of 150°C.
Package Thermal Characteristics*
Package
RθJA
(°C/W)
PCB
LJ
35
4-layer
* Additional information is available on the Allegro website.
Ordering Information
Use the following complete part numbers when ordering:
Part Number
Packing
A4447SLJTR-T
13-in. reel, 3000 pieces/reel
Description
LJ package, SOIC surface mount with
exposed thermal pad; leadframe plating
100% matte tin.
Allegro MicroSystems, Inc.
2
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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