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A4402KLPTR-T

更新时间： 2024-11-09 12:26:47
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光电二极管PC
页数 文件大小 规格书
17页 326K
描述
Constant On-Time Buck Converter With Integrated Linear Regulator

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中文翻译

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A4402KLPTR-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：TSSOP
包装说明：LEAD FREE, MO-153ABT, TSSOP-16针数：16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：1.69
Samacsys Confidence：3Samacsys Status：Released
Samacsys PartID：1139186Samacsys Pin Count：17
Samacsys Part Category：Integrated CircuitSamacsys Package Category：Small Outline Packages
Samacsys Footprint Name：Package LP, 16-Pin eTSSOPSamacsys Released Date：2019-01-16 12:18:53
Is Samacsys：N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：50 V最小输入电压：6 V
标称输入电压：8 VJESD-30 代码：R-PDSO-G16
JESD-609代码：e3长度：5 mm
湿度敏感等级：2功能数量：1
端子数量：16最高工作温度：150 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：HTSSOP封装等效代码：TSSOP16,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.2 mm最大供电电流 (Isup)：6 mA
表面贴装：YES切换器配置：BUCK
最大切换频率：2000 kHz温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：40宽度：4.4 mm
Base Number Matches：1

A4402KLPTR-T 数据手册

 浏览型号A4402KLPTR-T的Datasheet PDF文件第2页浏览型号A4402KLPTR-T的Datasheet PDF文件第3页浏览型号A4402KLPTR-T的Datasheet PDF文件第4页浏览型号A4402KLPTR-T的Datasheet PDF文件第5页浏览型号A4402KLPTR-T的Datasheet PDF文件第6页浏览型号A4402KLPTR-T的Datasheet PDF文件第7页 
A4402  
Constant On-Time Buck Converter  
With Integrated Linear Regulator  
Features and Benefits  
▪ 2 MHz switching frequency  
▪ Adjustable soft start timer  
▪ Watchdog input  
▪ Power-on reset output  
▪ Adjustable buck and linear regulators  
▪ Enable input  
Description  
The A4402 is a dual-output regulator, combining in a single  
packageaconstanton-timebuckregulatorandalinearregulator  
(LDO)—each with adjustable output voltages. It is ideal for  
applications that require two regulated voltages, such as in  
microcontroller- or DSP-based applications requiring core  
and I/O voltage rails.  
▪ 6 to 50 V supply voltage range  
▪ Overcurrent protection  
▪ Undervoltage lockout (UVLO)  
▪ Thermal shutdown protection  
The buck regulator output supplies the adjustable linear  
regulator to reduce power dissipation and increase overall  
efficiency. The switching regulator is capable of operating  
above 2 MHz, allowing the use of small low value inductors  
and capacitors while avoiding sensitive EMI frequency bands  
such as AM radio in automotive applications.  
Applications:  
AUTOMOTIVE (“K” VERSION)  
COMMERCIAL (“E” VERSION)  
• Powersteeringcontrolunits • Photo and inkjet printers  
• Transmission control units • Industrial controls  
Protection features include undervoltage lockout and thermal  
shutdown. In case of a shorted load, each regulator features  
overcurrent protection.  
• Lighting control units  
• Infotainment  
• Cluster  
• Distributed power systems  
• Networking applications  
• Point-of-sale  
The device has an integrated power-on reset with adjustable  
delay to monitor LDO output voltage and provide a signal that  
can be used to reset a DSP or microcontroller. It also includes  
a watchdog circuit.  
• Centerstack  
• Security systems  
• Other body control  
Package: 16-pin TSSOP with exposed  
thermal pad (suffix LP)  
The A4402 is provided in a 16-pin TSSOP, with exposed pad  
for enhanced thermal dissipation. It is lead (Pb) free, with  
100% matte tin leadframe plating.  
Not to scale  
Typical Application  
VBAT  
Rton  
750 kΩ  
TON  
VIN1  
CTSET  
0.1 μF  
TSET  
Efficiency vs. Output Current  
10 μF  
BOOT  
90  
85  
80  
75  
70  
65  
60  
0.15 μF  
μF  
0.01  
Switching Regulator Output  
VSW  
5
LX  
CPOR  
5 V  
L1  
33 μH  
POR  
ISEN  
3.3  
0.33 μF  
A4402  
R
SENSE  
4.7 μF  
GND  
GND  
R1  
31.6  
VOUT (V)  
kΩ  
VO2  
FB1  
R2  
9.76 kΩ  
20 kΩ  
NPOR  
VIN2  
VO2  
Linear Regulator Output  
VLIN  
ENB  
WDI  
3.3 V  
250 mA  
0
200 400 600 800 1000 1200  
R3  
10  
1 μF  
kΩ  
4.7 kΩ  
IOUT (mA)  
FB2  
GND  
R4  
5.62 kΩ  
Data is for reference only. Efficiency data from circuit shown in left panel.  
4402-DS, Rev. 9  
1234567...17

中文翻译

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