參數(shù)資料
型號(hào): A8499
廠商: Allegro MicroSystems, Inc.
英文描述: High Voltage Step-Down Regulator
中文描述: 高電壓降壓穩(wěn)壓器
文件頁(yè)數(shù): 2/7頁(yè)
文件大?。?/td> 276K
代理商: A8499
A8499-DS
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
A8499
High Voltage Step-Down Regulator
2
Functional Block Diagram
Ab so ute Max mum Rat ngs
Supply Voltage, V
IN
.........................................................................
50 V
VBIAS Input Voltage, V
BIAS
.................................................
–0.3 to 7 V
Switch Voltage, V
LX
........................................................................
–1 V
ENB Input Voltage, V
ENB
......................................................
–0.3 to 7 V
Junction Temperature, T
J(max)
.......................................................
150°C
Storage Temperature, T
S
...............................................
–55°C to 150°C
Operating Ambient Temperature, T
A
...............................
–20°C to 85°C
Package Thermal Characteristics*
Package
R
θ
JA
(°C/W)
35
PCB
LJ
4-layer
* Additional information is available on the Allegro Web site
+
+
+
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 V
OUT
target is between
3.3 and 5 V
D1
L1
V
IN
COUT
VOUT
ESR
UVLO
TSD
Switch
Disable
Bias Supply
I_Peak
I_Demand
Clamp
Use the following complete part number when ordering:
Part Number
Packing
Description
Surface
Mount
A8499SLJTR-T
13-in. reel,
3000 pieces/reel
Leadframe plating 100% matte-tin.
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