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MAX758AEPA+ PDF预览

MAX758AEPA+

更新时间: 2024-01-03 08:34:21
品牌 Logo 应用领域
美信 - MAXIM 开关光电二极管
页数 文件大小 规格书
16页 208K
描述
Switching Regulator, Current-mode, 2A, 190kHz Switching Freq-Max, CMOS, PDIP8, PLASTIC, DIP-8

MAX758AEPA+ 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:DIP
包装说明:PLASTIC, DIP-8针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01Factory Lead Time:6 weeks
风险等级:1.34其他特性:ALSO OPERATES IN ADJUSTABLE MODE FROM TO 1.25V TO 16
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:16 V
最小输入电压:4 V标称输入电压:12 V
JESD-30 代码:R-PDIP-T8JESD-609代码:e3
长度:9.375 mm湿度敏感等级:1
功能数量:1端子数量:8
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电流:2 A标称输出电压:5 V
封装主体材料:PLASTIC/EPOXY封装代码:DIP
封装等效代码:DIP8,.3封装形状:RECTANGULAR
封装形式:IN-LINE峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:4.572 mm
子类别:Switching Regulator or Controllers最大供电电流 (Isup):3 mA
表面贴装:NO切换器配置:BUCK
最大切换频率:190 kHz技术:CMOS
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn)
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:7.62 mmBase Number Matches:1

MAX758AEPA+ 数据手册

 浏览型号MAX758AEPA+的Datasheet PDF文件第5页浏览型号MAX758AEPA+的Datasheet PDF文件第6页浏览型号MAX758AEPA+的Datasheet PDF文件第7页浏览型号MAX758AEPA+的Datasheet PDF文件第9页浏览型号MAX758AEPA+的Datasheet PDF文件第10页浏览型号MAX758AEPA+的Datasheet PDF文件第11页 
Ad ju s t a b le , S t e p -Do w n ,  
Cu rre n t -Mo d e P WM Re g u la t o rs  
V
IN  
V+  
C2  
1µF  
C3  
*
SHDN  
OVERCURRENT COMPARATOR  
BIAS  
GEN  
SLOPE COMPENSATION  
RAMP  
GEN  
Σ
MAX750A  
MAX758A  
R
SENSE  
C5  
330pF  
CURRENT  
SENSE AMP  
R2  
ERROR  
AMP  
F/F  
R
CC  
R3  
Q
S
R1  
510K  
L1  
PWM  
COMPARATOR  
V
OUT  
1.23V  
BANDGAP  
LX  
0/MX758A  
D1  
1N5817  
C4  
*
REF  
SS  
OSC  
C6  
0.01µF  
1M  
±35%  
UNDERVOLTAGE  
LOCKOUT  
SS CLAMP  
C1  
0.1µF  
V
UVLO  
GND  
SEE TABLE 3 FOR COMPONENT VALUES AND SUPPLIERS.  
*
Figure 1. Detailed Block Diagram with External Components  
undervoltage condition is detected, control logic turns  
off the output power FET and discharges the soft-start  
capacitor to ground. This prevents partial turn-on of  
the power MOSFET and avoids excessive power dissi-  
pation. The control logic holds the output power FET  
off until the supply voltage rises above approximately  
3.75V, at which time a soft-start cycle begins.  
Ove rc u rre n t Lim it in g  
The overcurrent comparator triggers when the load cur-  
re nt e xc e e d s a p p roxima te ly 1.5A. On e a c h c loc k  
cycle, the output FET turns on and attempts to deliver  
current until cycle-by-cycle or overcurrent limits are  
exceeded. Note that the soft-start capacitor must be  
greater than 0.01µF for overcurrent protection to func-  
tion properly. A typical value is 0.1µF. A soft-start  
cycle is initiated when the overcurrent comparator is  
triggered.  
S h u t d o w n Mo d e  
The MAX750A/MAX758A are shut down by keeping  
SHDN at ground. In shutdown mode, the output power  
FET is held off and the output drops to 0V. The internal  
reference also turns off, which causes the soft-start  
capacitor to discharge. The 6µA typical standby cur-  
rent includes external-component leakage currents. As  
temperature increases past +85°C, the external capaci-  
Un d e rvo lt a g e Lo c k o u t  
The undervoltage lockout feature monitors the supply  
voltage at V+ and allows operation to start when V+  
rises above 3.75V. When V+ falls, operation continues  
until the supply voltage falls below 3.50V. When an  
8
_______________________________________________________________________________________  

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