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A8698ELJTR-T PDF预览

A8698ELJTR-T

更新时间: 2024-01-21 05:27:34
品牌 Logo 应用领域
急速微 - ALLEGRO 稳压器
页数 文件大小 规格书
12页 617K
描述
Wide Input Voltage 3.0 A Step Down Regulator

A8698ELJTR-T 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:SOIC
包装说明:HSOP, SOP8,.25针数:8
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.81
其他特性:ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8V TO 20V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:25 V最小输入电压:8 V
标称输入电压:12 VJESD-30 代码:R-PDSO-G8
JESD-609代码:e3长度:4.9 mm
湿度敏感等级:3功能数量:1
端子数量:8最高工作温度:85 °C
最低工作温度:-40 °C最大输出电流:5 A
封装主体材料:PLASTIC/EPOXY封装代码:HSOP
封装等效代码:SOP8,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, HEAT SINK/SLUG峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:1.75 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:BUCK温度等级:INDUSTRIAL
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:3.9 mm
Base Number Matches:1

A8698ELJTR-T 数据手册

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A8698  
Wide Input Voltage 3.0 A Step Down Regulator  
Features and Benefits  
Description  
8 to 25 V input range  
Integrated DMOS switch  
Adjustable fixed off-time  
Highly efficient  
The A8698 is a constant off-time current mode step-down  
regulatorwithawideinputvoltagerange.Regulationvoltageis  
set by external resistors, to output voltages as low as 0.8 V.  
The A8698 includes an integrated power DMOS switch to  
reduce the total solution footprint. It also features internal  
compensation, allowing users to design stable regulators with  
minimal design efforts.  
Adjustable 0.8 to 20 V output  
The off-time can be set with an external resistor, allowing  
flexibility in inductor selection. Additionally, the A8698 has  
a logic level enable pin which can shut the device down and  
put it into a low quiescent current mode for power sensitive  
applications.  
The A8698 is supplied in a low-profile 8-lead SOIC with  
exposed pad (package LJ). Applications include:  
Package: 8-Lead SOIC with exposed  
thermal pad (suffix LJ)  
Applications with 8 to 25 V input  
Consumer electronics, networking equipment  
12 V lighter-powered applications (portable DVD, etc.)  
Point of Sale (POS) applications  
Approximate Scale 1:1  
Typical Application  
+8 to 24 V  
Efficiency  
VIN = 12.0 V  
CBOOT  
0.01 μF  
92  
CIN3  
82 μF  
CIN2  
82 μF  
35 V  
CIN1  
0.22 μF  
VOUT = 5.0 V  
90  
35  
V
88  
BOOT  
ENB  
VIN  
LX  
VOUT = 3.3 V  
86  
84  
82  
L 1  
33 μH  
A8698  
VOUT  
3.3 V / 3 A  
VOUT = 2.5 V  
80  
78  
76  
74  
72  
70  
TSET  
GND  
VBIAS  
FB  
RTSET  
30.1 k7  
R1  
6.34 k7  
COUT  
330 μF  
6.3 V  
ESR  
R2  
2 k7  
D1  
0
0.5  
1.0  
1.5  
2.0  
2.5  
3.0  
Load Current (A)  
Circuit for 12 V step down to 3.3 V at 3 A.  
Efficiency curves for circuit at left.  
A8698-DS, Rev. 3  

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