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A4403GEU-T PDF预览

A4403GEU-T

更新时间: 2024-02-29 05:36:49
品牌 Logo 应用领域
急速微 - ALLEGRO 转换器稳压器开关式稳压器或控制器电源电路开关式控制器
页数 文件大小 规格书
15页 335K
描述
Valley Current Mode Control Buck Converter

A4403GEU-T 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:QFN
包装说明:HVQCCN, LCC16,.16SQ,25针数:16
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:1.69
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:CURRENT-MODE
控制技术:PULSE FREQUENCY MODULATION最大输入电压:46 V
最小输入电压:9 VJESD-30 代码:S-XQCC-N16
JESD-609代码:e3长度:4 mm
湿度敏感等级:2功能数量:1
端子数量:16最高工作温度:105 °C
最低工作温度:-40 °C最大输出电流:4.2 A
封装主体材料:UNSPECIFIED封装代码:HVQCCN
封装等效代码:LCC16,.16SQ,25封装形状:SQUARE
封装形式:CHIP CARRIER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
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:BUCK最大切换频率:2000 kHz
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn)
端子形式:NO LEAD端子节距:0.65 mm
端子位置:QUAD处于峰值回流温度下的最长时间:40
宽度:4 mmBase Number Matches:1

A4403GEU-T 数据手册

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Valley Current Mode Control Buck Converter  
A4403  
Functional Block Diagram  
VIN 9 to 44.1 V  
C2  
22 nF  
C1  
2.2 μF  
BOOT  
VIN  
VIN  
Top-off  
Charge  
Pump  
VOUT  
3.3 V  
3 A  
Linear  
Regulator  
L1  
4.7 μH  
LX  
R2  
Sleep  
Circuit  
R1  
68 kΩ  
Not  
Fitted  
C3  
10 μF  
C4  
10 μF  
Driver  
D1  
TON  
On  
Timer  
Control  
Logic  
Off  
ISEN  
Blank  
Timer  
R4  
100 mΩ  
DIS  
R3  
100 mΩ  
C6  
R5  
2.37 kΩ  
10 nF  
Reg Ref  
Overvoltage  
Comparator +80 mV  
Switch  
Closed = On  
SGND  
FB  
+
+
+
VIN UVLO  
Linear OK  
TSD  
Regulator  
Comparator  
Fault  
Amplifier  
R6  
750 Ω  
Soft-Start  
Reg Ref  
SS  
GND  
NC  
C5  
47 nF  
Switching Frequency = 1 MHz  
All capacitors are X5R or X7R ceramic  
Resistors R3 and R4 should be surface mount, low inductance type, rated at 250 mW at 70°C  
C6 is an optional speed-up capacitor, to improve the transient response  
Terminal List Table  
Number  
Name  
VIN  
Function  
1
Input supply  
No connection; tie to GND  
Pin-out Diagram  
2, 7, 13, 14, 15, 16  
NC  
3
4
5
6
8
TON  
SS  
Terminal for on-time setting with external resistor  
Terminal for soft-start setting with external capacitor  
Feedback terminal  
FB  
VIN  
NC  
1
2
3
4
12  
11  
10  
9
LX  
GND  
ISEN  
Ground terminal  
BOOT  
DIS  
PAD  
Current sense input  
TON  
SS  
SGND  
9
SGND Current sense ground reference  
DIS Disable logic input; active high  
BOOT Bootstrap supply node  
10  
11  
12  
LX  
Switch node  
(Top View)  
Exposed thermal pad; connect to ground plane  
(GND) by through-hole vias  
PAD  
Allegro MicroSystems, Inc.  
115 Northeast Cutoff  
3
Worcester, Massachusetts 01615-0036 U.S.A.  
1.508.853.5000; www.allegromicro.com  

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