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A8499 Datasheet(PDF) 2 Page - Allegro MicroSystems

No. de Pieza. A8499
Descripción  High Voltage Step-Down Regulator
Descarga  7 Pages
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Fabricante  ALLEGRO [Allegro MicroSystems]
Página de inicio  http://www.allegromicro.com
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A8499 Datasheet(HTML) 2 Page - Allegro MicroSystems

   
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High Voltage Step-Down Regulator
A8499
2
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Functional Block Diagram
Absolute Maximum Ratings
Package Thermal Characteristics*
Package
RθJA
(°C/W)
PCB
LJ
35
4-layer
* Additional information is available on the Allegro Web site
Supply Voltage, VIN .........................................................................50 V
VBIAS Input Voltage, VBIAS .................................................–0.3 to 7 V
Switch Voltage, VLX.........................................................................–1 V
ENB Input Voltage, VENB ......................................................–0.3 to 7 V
Junction Temperature, TJ(max) ....................................................... 150°C
Storage Temperature, TS ............................................... –55°C to 150°C
Operating Ambient Temperature, TA............................... –20°C to 85°C
+
BOOT
ENB
TSET
GND
VIN
LX
FB
VBIAS
Switch PWM
µC
Soft Start
Ramp Generation
COMP
1.2 V
Boot Charge
VBIAS is connected to VOUT
when VOUT target is between
3.3 and 5 V
D1
L1
VIN
COUT
VOUT
ESR
UVLO
TSD
Switch
Disable
Bias Supply
I_Peak
I_Demand
Clamp
Ordering Information
Use the following complete part numbers when ordering:
Part Numbera
Packingb
Description
A8499SLJTR-T
13 in. reel, 3000 pieces/reel
LJ package, SOIC surface mount with
exposed thermal pad
A8499SLJ-T
98 pieces/tube
aLeadframe plating 100% matte tin.
bContact Allegro for additional packing options.


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