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A4490EES-T PDF预览

A4490EES-T

更新时间: 2024-09-19 20:00:15
品牌 Logo 应用领域
急速微 - ALLEGRO 开关
页数 文件大小 规格书
17页 404K
描述
Switching Regulator, Current-mode, 2A, 630kHz Switching Freq-Max, 4 X 4 MM, 0.75 MM HEIGHT, LEAD FREE, MO-220WGGD, QFN-20

A4490EES-T 技术参数

是否Rohs认证: 符合生命周期:Obsolete
零件包装代码:QFN包装说明:HVQCCN,
针数:20Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.72模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:CURRENT-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:34 V最小输入电压:4.5 V
标称输入电压:6 VJESD-30 代码:S-XQCC-N20
JESD-609代码:e3长度:4 mm
功能数量:3端子数量:20
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电流:2 A封装主体材料:UNSPECIFIED
封装代码:HVQCCN封装形状:SQUARE
封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:0.8 mm
表面贴装:YES切换器配置:BUCK
最大切换频率:630 kHz温度等级:INDUSTRIAL
端子面层:Matte Tin (Sn)端子形式:NO LEAD
端子节距:0.5 mm端子位置:QUAD
处于峰值回流温度下的最长时间:40宽度:4 mm
Base Number Matches:1

A4490EES-T 数据手册

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A4490  
Triple Output Step-Down Switching Regulator  
Features and Benefits  
Three buck converters  
4.5 to 34 V input voltage range  
550 kHz fixed frequency  
Multiphase switching  
Description  
Designedtoprovidethepowersupplyrequirementsofprinters,  
office automation, industrial, and portable equipment, the  
A4490providesthreehighcurrent,highperformance,switching  
regulator outputs with independent soft start.  
Independent control of each converter  
Power-on-reset flag  
Internal compensation  
High frequency switching allows selection of inexpensive  
inductors and small ceramic output capacitors. The turn-on  
cycles of the regulators are interleaved to minimize stresses on  
the input capacitors and to reduce EMI.Acharge pump is used  
to provide the supply for driving the power switches, ensuring  
operation at very wide operating duty cycles and avoiding the  
need for power-draining clamp circuits.  
4 × 4 mm QFN Package, small PCB footprint  
Apower-on-resetcircuitwithuserconfigurabledelayindicates  
when enabled regulators are in specification. The power-on-  
reset flag also indicates when the input voltage drops below  
specification, giving the system controller advance warning  
while the switchers continue to operate down to the shutdown  
level.  
Package: 20-contact QFN (suffix ES)  
Internaldiagnosticsprovidecomprehensiveprotectionagainst  
overloads, input undervoltages, and overtemperatures.  
Continued on the next page…  
Approximate size  
Typical Application  
VBB  
VDD  
CP1 CP2 VCP  
VBB1  
LX1  
PORZ  
CPOR  
V
V
REG1  
REG2  
FB1  
A4490  
Microcontroller or  
Controller Logic  
VBB2  
ENB1  
ENB2  
ENB3  
LX2  
FB2  
VBB3  
PGND  
GND  
LX3  
FB3  
V
REG3  
4490-DS, Rev. 10  

A4490EES-T 替代型号

型号 品牌 替代类型 描述 数据表
A4490EESTR-T ALLEGRO

类似代替

Triple Output Step-Down Switching Regulator

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