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MAX1649C/D PDF预览

MAX1649C/D

更新时间: 2024-11-08 22:25:47
品牌 Logo 应用领域
美信 - MAXIM 控制器
页数 文件大小 规格书
12页 169K
描述
5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers

MAX1649C/D 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Active零件包装代码:DIE
包装说明:DIE,针数:9
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.76
模拟集成电路 - 其他类型:SWITCHING CONTROLLER控制模式:CURRENT-MODE
控制技术:PULSE FREQUENCY MODULATION最大输入电压:16 V
最小输入电压:3 V标称输入电压:5 V
JESD-30 代码:R-XUUC-N9JESD-609代码:e0
功能数量:1端子数量:9
最高工作温度:70 °C最低工作温度:
标称输出电压:5 V封装主体材料:UNSPECIFIED
封装代码:DIE封装形状:RECTANGULAR
封装形式:UNCASED CHIP峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified最大供电电流 (Isup):0.1 mA
表面贴装:YES切换器配置:SINGLE
最大切换频率:300 kHz技术:BICMOS
温度等级:COMMERCIAL端子面层:TIN LEAD
端子形式:NO LEAD端子位置:UPPER
处于峰值回流温度下的最长时间:NOT SPECIFIEDBase Number Matches:1

MAX1649C/D 数据手册

 浏览型号MAX1649C/D的Datasheet PDF文件第2页浏览型号MAX1649C/D的Datasheet PDF文件第3页浏览型号MAX1649C/D的Datasheet PDF文件第4页浏览型号MAX1649C/D的Datasheet PDF文件第5页浏览型号MAX1649C/D的Datasheet PDF文件第6页浏览型号MAX1649C/D的Datasheet PDF文件第7页 
19-0305; Rev 2; 9/95  
5 V/3 .3 V o r Ad ju s t a b le , Hig h -Effic ie n c y,  
Lo w -Dro p o u t , S t e p -Do w n DC-DC Co n t ro lle rs  
49/MAX651  
_______________Ge n e ra l De s c rip t io n  
____________________________Fe a t u re s  
More than 90% Efficiency (10mA to 1.5A Loads)  
More than 12.5W Output Power  
The MAX1649/MAX1651 BiCMOS, step-down, DC-DC  
switching controllers provide high efficiency over loads  
ranging from 1mA to more than 2.5A. A unique, current-  
limited pulse-frequency-modulated (PFM) control scheme  
gives these devices the benefits of pulse-width-modula-  
tion (PWM) converters (high efficiency at heavy loads),  
while using only 100µA of supply current (vs. 2mA to  
10mA for PWM converters). Dropout performance down  
to 300mV is provided by a high switch duty cycle (96.5%)  
and a low current-sense threshold (110mV).  
Less than 0.3V Dropout Voltage at 500mA  
100µA Max Quiescent Supply Current  
5µA Max Shutdown Supply Current  
16V Max Input Voltage  
5V (MAX1649), 3.3V (MAX1651), or Adjustable  
Output Voltage  
A high switching frequency (up to 300kHz) allows these  
devices to use miniature external components.  
Current-Limited Control Scheme  
Up to 300kHz Switching Frequency  
Up to 96.5% Duty Cycle  
The MAX1649/MAX1651 have dropout voltages less  
than 0.3V at 500mA and accept input voltages up to  
16V. Output voltages are preset at 5V (MAX1649), or  
3.3V (MAX1651). They can also be adjusted to any  
voltage from 1.5V to the input voltage by using two  
resistors.  
______________Ord e rin g In fo rm a t io n  
PART  
TEMP. RANGE  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
-40°C to +85°C  
-40°C to +85°C  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
8 Plastic DIP  
8 SO  
MAX1649CPA  
MAX1649CSA  
MAX1649C/D  
MAX1649EPA  
MAX1649ESA  
MAX1651CPA  
MAX1651CSA  
MAX1651C/D  
MAX1651EPA  
MAX1651ESA  
These step-down controllers drive external P-channel  
MOSFETs at loads greater than 12.5W. If less power is  
required, use the MAX639/MAX640/MAX653 step-down  
c onve rte rs with on-c hip FETs , whic h a llow up to a  
225mA load current.  
Dice*  
8 Plastic DIP  
8 SO  
________________________Ap p lic a t io n s  
PDAs  
8 Plastic DIP  
8 SO  
Dice*  
High-Efficiency Step-Down Regulation  
5V-to-3.3V Green PC Applications  
Battery-Powered Applications  
8 Plastic DIP  
8 SO  
* Dice are tested at T = +25°C.  
A
__________Typ ic a l Op e ra t in g Circ u it  
__________________P in Co n fig u ra t io n  
INPUT  
3.6V TO 16V  
TOP VIEW  
V+  
OUT  
FB  
1
2
3
4
8
7
6
5
GND  
EXT  
CS  
MAX1651  
SHDN  
CS  
ON/OFF  
MAX1649  
MAX1651  
SHDN  
REF  
EXT  
P
OUTPUT  
3.3V  
V+  
OUT  
REF  
DIP/SO  
FB GND  
________________________________________________________________ Maxim Integrated Products  
1
Ca ll t o ll fre e 1 -8 0 0 -9 9 8 -8 8 0 0 fo r fre e s a m p le s o r lit e ra t u re .  

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暂无描述
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