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MAX761CSA+ PDF预览

MAX761CSA+

更新时间: 2024-02-22 22:45:25
品牌 Logo 应用领域
美信 - MAXIM 信息通信管理开关光电二极管
页数 文件大小 规格书
12页 125K
描述
Switching Regulator, Current-mode, 1.5A, 300kHz Switching Freq-Max, BICMOS, PDSO8, 0.150 INCH, PLASTIC, SOIC-8

MAX761CSA+ 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:SOP, SOP8,.25针数:8
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.69
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:16.5 V
最小输入电压:3 VJESD-30 代码:R-PDSO-G8
JESD-609代码:e3长度:4.9 mm
湿度敏感等级:1功能数量:1
端子数量:8最高工作温度:70 °C
最低工作温度:最大输出电流:1.5 A
标称输出电压:12 V封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOP8,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:1.75 mm子类别:Switching Regulator or Controllers
最大供电电流 (Isup):0.11 mA表面贴装:YES
切换器配置:BOOST最大切换频率:300 kHz
技术:BICMOS温度等级:COMMERCIAL
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

MAX761CSA+ 数据手册

 浏览型号MAX761CSA+的Datasheet PDF文件第4页浏览型号MAX761CSA+的Datasheet PDF文件第5页浏览型号MAX761CSA+的Datasheet PDF文件第6页浏览型号MAX761CSA+的Datasheet PDF文件第8页浏览型号MAX761CSA+的Datasheet PDF文件第9页浏览型号MAX761CSA+的Datasheet PDF文件第10页 
1 2 V/1 5 V o r Ad ju s t a b le , Hig h -Effic ie n c y,  
Lo w I , Ste p-Up DC-DC Conve rte rs  
Q
1/MAX762  
LBO  
V+  
FB  
DUAL-MODE  
COMPARATOR  
MAX761  
MAX762  
LBI  
N
LBI  
100mV  
ERROR  
COMPARATOR  
REF  
V+  
1.5V  
REFERENCE  
Q
TRIG  
ONE-SHOT  
N
Q
S
R
LOW INPUT  
VOLTAGE  
OSCILLATOR  
UNDER VOLTAGE  
COMPARATOR  
2.5V  
Q
TRIG  
ONE-SHOT  
LX  
CURRENT  
COMPARATOR  
N
0.2V  
0.1V  
CURRENT CONTROL  
CIRCUITRY  
GND  
Figure 1. Simple Block Diagram  
because of their 300kHz switching frequency, (2) the  
current-limited PFM control scheme allows 86% efficien-  
cies over a wide range of load currents, and (3) the max-  
imum supply current is only 110µA.  
________________De t a ile d De s c rip t io n  
Op e ra t in g P rin c ip le  
The MAX761/MAX762 BiCMOS step-up switch-mode  
power supplies provide fixed outputs of 12V and 15V,  
respectively. They have a unique control scheme that  
combines the advantages of pulse-frequency modulation  
(low supply current) and pulse-width modulation (high  
efficiency at high loads). The internal N-channel power  
MOSFET allows 1A peak currents, increasing the output  
current capability over previous pulse-frequency-modu-  
la tion (PFM) d e vic e s . Fig ure 1 s hows the MAX761/  
MAX762 block diagram.  
Bo o t s t ra p p e d /No n -Bo o t s t ra p p e d Mo d e s  
Figures 2 and 3 show the standard application circuits  
for bootstrapped and non-bootstrapped modes. In boot-  
stra p p e d mode , the IC is p owe re d from the outp ut  
(V ). In other words, the current needed to power the  
OUT  
bootstrapped circuit is different from the V+ current the  
chip consumes. The voltage applied to the gate of the  
internal N-channel FET is switched from V  
to ground,  
OUT  
providing more switch-gate drive and increasing the effi-  
ciency of the DC-DC converter compared with non-boot-  
strapped operation.  
The MAX761/MAX762 offer three main improvements  
over prior solutions: (1) the converters operate with tiny  
s urfa c e -mount ind uc tors (le s s tha n 5mm d ia me te r)  
_______________________________________________________________________________________  
7

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