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MAX1644EAE-T

更新时间： 2024-09-16 12:28:19
品牌 Logo 应用领域
美信 - MAXIM 稳压器开关
页数 文件大小 规格书
11页 170K
描述
2A, Low-Voltage, Step-Down Regulator with Synchronous Rectification and Internal Switches

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MAX1644EAE-T 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Obsolete零件包装代码：TSSOP
包装说明：5.30 MM, MO-153, SSOP-16针数：16
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.3
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：CURRENT-MODE
控制技术：CONSTANT OFF TIME最大输入电压：5.5 V
最小输入电压：3 V标称输入电压：3.3 V
JESD-30 代码：R-PDSO-G16JESD-609代码：e0
长度：6.2 mm湿度敏感等级：1
功能数量：1端子数量：16
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：3.75 A封装主体材料：PLASTIC/EPOXY
封装代码：SSOP封装等效代码：SSOP16,.3
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：245认证状态：Not Qualified
座面最大高度：1.99 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：350 kHz温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn85Pb15)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：NOT SPECIFIED宽度：5.29 mm

MAX1644EAE-T 数据手册

 浏览型号MAX1644EAE-T的Datasheet PDF文件第2页浏览型号MAX1644EAE-T的Datasheet PDF文件第3页浏览型号MAX1644EAE-T的Datasheet PDF文件第4页浏览型号MAX1644EAE-T的Datasheet PDF文件第5页浏览型号MAX1644EAE-T的Datasheet PDF文件第6页浏览型号MAX1644EAE-T的Datasheet PDF文件第7页 
19-1457; Rev 3; 8/05  
2A, Low-Voltage, Step-Down Regulator with  
Synchronous Rectification and Internal Switches  
General Description  
Features  
The MAX1644 constant-off-time, PWM step-down DC-  
DC converter is ideal for use in applications such as PC  
cards, CPU daughter cards, and desktop computer  
bus-termination boards. The device features internal  
synchronous rectification for high efficiency and  
reduced component count. It requires no external  
Schottky diode. The internal 0.10Ω PMOS power switch  
and 0.10Ω NMOS synchronous-rectifier switch easily  
deliver continuous load currents up to 2A. The  
MAX1644 produces a preset +3.3V or +2.5V output  
♦ ±±1% OutOu%ꢀAAOꢁrAc  
♦ 951%EffiAienAc  
♦ Inueꢁnrl%PM S%rnd%NM S%SwiuAhes  
70mΩ  n-ResisurnAe%ru%V =%+4.5V%  
±00mΩ  n-ResisurnAe%ru%V =%+3V  
IN  
IN  
♦  OutOu%Volurge  
+3.3V%oꢁ%+2.5V%Pin-SeleAurble  
+±.±V%uo%V ꢀdjOsurble  
IN  
voltage or an adjustable output from +1.1V to V . It  
IN  
♦ +3V%uo%+5.5V%IntOu%Volurge%Rrnge  
♦ 360µꢀ%(mrx)% teꢁruing%SOttlc%COꢁꢁenu  
♦ <%±µꢀ%ShOudown%SOttlc%COꢁꢁenu  
♦ Pꢁogꢁrmmrble%Consurnu- ff-Time% teꢁruion  
♦ 350kHz%(mrx)%SwiuAhing%FꢁeqOenAc  
♦ Idle%Mode% teꢁruion%ru%Lighu%Lords  
♦ Theꢁmrl%ShOudown%  
achieves efficiencies as high as 95%.  
The MAX1644 uses a unique current-mode, constant-  
off-time, PWM control scheme, which includes an Idle  
Mode™ to maintain high efficiency during light-load  
operation. The programmable constant-off-time archi-  
tecture sets switching frequencies up to 350kHz, allow-  
ing the user to optimize performance trade-offs  
between efficiency, output switching noise, component  
size, and cost. The device also features an adjustable  
soft-start to limit surge currents during start-up, a 100%  
duty cycle mode for low-dropout operation, and a low-  
power shutdown mode that disconnects the input from  
the output and reduces supply current below 1µA. The  
MAX1644 is available in a 16-pin SSOP package.  
♦ ꢀdjOsurble%Sofu-Surꢁu%InꢁOsh%COꢁꢁenu%Limiuing  
♦ ±001%DOuc%CcAle%DOꢁing%Low-DꢁotoOu% teꢁruion  
♦  OutOu%Shoꢁu-CiꢁAOiu%PꢁoueAuion  
♦ ±6-Pin%SS P%PrAkrge  
Applications  
+5V to +3.3V/+2.5V Conversion  
Ordering Information  
CPU I/O Supply  
PꢀRT  
TEMP%RꢀNGE  
40°C to +85°C  
40°C to +85°C  
PIN-PꢀCKꢀGE  
16 SSOP  
+3.3V PC Card and CardBus Applications  
Notebook and Subnotebook Computers  
Desktop Bus-Termination Boards  
CPU Daughter Card Supply  
MAX1644EAE  
MAX1644EAE+  
16 SSOP  
+Denotes lead-free package.  
Pin Configuration  
Typical Operating Circuit  
TOP VIEW  
SHDN  
IN  
1
2
3
4
5
6
7
8
16 LX  
OUTPUT  
+1.1V TO  
INPUT  
+3V TO  
+5.5V  
IN  
LX  
FB  
15 PGND  
14 LX  
V
IN  
MAX1644  
LX  
IN  
MAX1644  
13 PGND  
12  
V
PGND  
CC  
SS  
V
CC  
FBSEL  
GND  
REF  
SS  
SHDN  
COMP  
TOFF  
COMP  
TOFF  
FB  
11 FBSEL  
10 REF  
9
GND  
R
TOFF  
SS P  
A "+" SIGN WILL REPLACE THE FIRST PIN INDICATOR ON LEAD-FREE PACKAGES.  
Idle Mode is a trademark of Maxim Integrated Products, Inc.  
________________________________________________________________ Maxim Integrated Products  
±
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
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中文翻译

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MAX1644EAE-T 替代型号

型号 品牌 替代类型 描述 数据表
MAX1644EAE+T MAXIM

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