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MAX1957EUB-T

更新时间： 2024-11-24 21:22:27
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
22页 636K
描述
Switching Controller, Voltage-mode, 3A, 360kHz Switching Freq-Max, BICMOS, PDSO10, MO-187CBA, MICRO MAX PACKAGE-10

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MAX1957EUB-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：TSSOP, TSSOP10,.19,20针数：10
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.22
其他特性：ALSO OPERATES IN CURRENT MODE模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：VOLTAGE-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：5.5 V最小输入电压：3 V
标称输入电压：5 VJESD-30 代码：S-PDSO-G10
JESD-609代码：e0长度：3 mm
湿度敏感等级：1功能数量：1
端子数量：10最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：3 A
封装主体材料：PLASTIC/EPOXY封装代码：TSSOP
封装等效代码：TSSOP10,.19,20封装形状：SQUARE
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：240
认证状态：Not Qualified座面最大高度：1.1 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：PUSH-PULL最大切换频率：360 kHz
技术：BICMOS温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn85Pb15)端子形式：GULL WING
端子节距：0.5 mm端子位置：DUAL
处于峰值回流温度下的最长时间：20宽度：3 mm
Base Number Matches：1

MAX1957EUB-T 数据手册

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19-2373; Rev 0; 4/02  
Low-Cost, High-Frequency, Current-Mode PWM  
Buck Controller  
General Description  
Features  
The MAX1953/MAX1954/MAX1957 is a family of versa-  
tile, economical, synchronous current-mode, pulse-width  
modulation (PWM) buck controllers. These step-down  
controllers are targeted for applications where cost and  
size are critical.  
o Low-Cost Current-Mode Controllers  
o Fixed-Frequency PWM  
o MAX1953  
1MHz Switching Frequency  
Small Component Size, Low Cost  
Adjustable Current Limit  
The MAX1953 operates at a fixed 1MHz switching fre-  
quency, thus significantly reducing external component  
size and cost. Additionally, excellent transient response  
is obtained using less output capacitance. The MAX1953  
operates from low 3V to 5.5V input voltage and can sup-  
ply up to 10A of output current. Selectable current limit is  
provided to tailor to the external MOSFETs’ on-resistance  
for optimum cost and performance. The output voltage is  
o MAX1954  
3V to 13.2V Input Voltage  
25A Output Current Capability  
93% Efficiency  
300kHz Switching Frequency  
adjustable from 0.8V to 0.86V .  
IN  
o MAX1957  
With the MAX1954, the drain-voltage range on the high-  
side FET is 3V to 13.2V and is independent of the supply  
voltage. It operates at a fixed 300kHz switching frequen-  
cy and can be used to provide up to 25A of output cur-  
rent with high efficiency. The output voltage is adjustable  
Tracking 0.4V to 0.86V Output Voltage Range  
IN  
Sinking and Sourcing Capability of 3A  
o Shutdown Feature  
o All N-Channel MOSFET Design for Low Cost  
o No Current-Sense Resistor Needed  
from 0.8V to 0.86V  
.
HSD  
The MAX1957 features a tracking output voltage range of  
0.4V to 0.86V and is capable of sourcing or sinking  
IN  
†
o Internal Digital Soft-Start  
current for applications such as DDR bus termination  
and PowerPC™/ASIC/DSP core supplies. The MAX1957  
operates from a 3V to 5.5V input voltage and at a fixed  
300kHz switching frequency.  
o Thermal Overload Protection  
o Small 10-Pin µMAX Package  
Ordering Information  
The MAX1953/MAX1954/MAX1957 provide a COMP pin  
that can be pulled low to shut down the converter in  
addition to providing compensation to the error amplifier.  
An input undervoltage lockout (ULVO) is provided to  
ensure proper operation under power-sag conditions to  
prevent the external power MOSFETs from overheating.  
Internal digital soft-start is included to reduce inrush cur-  
rent. The MAX1953/MAX1954/MAX1957 are available in  
tiny 10-pin µMAX packages.  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
10 µMAX  
MAX1953EUB  
MAX1954EUB  
MAX1957EUB  
10 µMAX  
10 µMAX  
Pin Configurations  
TOP VIEW  
Applications  
Printers and Scanners  
ILIM  
1
2
3
4
5
10 BST  
Graphic Cards and Video Cards  
PCs and Servers  
COMP  
FB  
9
8
7
6
LX  
MAX1953EUB  
DH  
Microprocessor Core Supply  
Low-Voltage Distributed Power  
Telecommunications and Networking  
GND  
IN  
PGND  
DL  
µMAX  
†Patent Pending  
PowerPC is a trademark of Motorola, Inc.  
Pin Configurations continued at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
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.  
1234567...22

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