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A8499 Datasheet(PDF) 1 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) 1 Page - Allegro MicroSystems

   
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VIN
LX
BOOT
ENB
TSET
GND
VBIAS
FB
+42 V
220 μF
10 V
ESR
VOUT
COUT
3.3 V / 1.2 A
17.8 k
Ω
R1
L1
D1
R2
10.2 k
Ω
0.22 μF
0.01 μF
CBOOT
C3
C3
RTSET
121 k
Ω
47 μH
100 μF
50 V
A8499
Efficiency vs. Output Current
70.0
72.0
74.0
76.0
78.0
80.0
82.0
84.0
86.0
88.0
90.0
0
200
400
600
800
1000
1200
1400
IOUT (mA)
3.3
5
VOUT (V)
Circuit for 42 V step down to 3.3 V at 1.2 A. Efficiency data from circuit shown in left panel.Data is for reference only.
A8499
Description
The A8499 is a step down regulator that will handle a wide
input operating voltage range.
The A8499 is supplied in a low-profile 8-lead SOIC with
exposed pad (package LJ).
Applications include:
▪ Printer power supplies
▪ Consumer equipment power supplies
A8499-DS, Rev. 3
Features and Benefits
▪ 8 to 50 V input range
▪ Integrated DMOS switch
▪ Adjustable fixed off-time
▪ Highly efficient
▪ Adjustable 1.2 to 24 V output
High Voltage Step-Down Regulator
Typical Application
Approximate Scale 1:1
Package: 8-Lead SOIC with exposed
thermal pad (suffix LJ)


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