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MAX8545EUB+ PDF预览

MAX8545EUB+

更新时间： 2024-10-01 04:41:39
品牌 Logo 应用领域
美信 - MAXIM 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管信息通信管理
页数 文件大小 规格书
18页 305K
描述
Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit

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MAX8545EUB+ 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：TSSOP
包装说明：LEAD FREE, MO-187CBA, MICRO, SOP-10针数：10
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.31.00.01Factory Lead Time：6 weeks
风险等级：1.38Is Samacsys：N
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：2.7 V标称输入电压：5 V
JESD-30 代码：S-PDSO-G10JESD-609代码：e3
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
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）：260
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：Matte Tin (Sn)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：NOT SPECIFIED宽度：3 mm
Base Number Matches：1

MAX8545EUB+ 数据手册

 浏览型号MAX8545EUB+的Datasheet PDF文件第2页浏览型号MAX8545EUB+的Datasheet PDF文件第3页浏览型号MAX8545EUB+的Datasheet PDF文件第4页浏览型号MAX8545EUB+的Datasheet PDF文件第5页浏览型号MAX8545EUB+的Datasheet PDF文件第6页浏览型号MAX8545EUB+的Datasheet PDF文件第7页 
19-2795; Rev 2; 6/07  
Low-Cost, Wide Input Range, Step-Down  
Controllers with Foldback Current Limit  
General Description  
Features  
The MAX8545/MAX8546/MAX8548 are voltage-mode  
pulse-width-modulated (PWM), step-down DC-DC con-  
trollers ideal for a variety of cost-sensitive applications.  
They drive low-cost n-channel MOSFETs for both the  
high-side switch and synchronous rectifier, and require  
no external current-sense resistor. These devices can  
supply output voltages as low as 0.8V.  
♦ 2.7V to 28V Input Range  
♦ Foldback Short-Circuit Protection  
♦ No Additional Bias Supply Needed  
♦ 0.8V to 0.83 x V Output  
IN  
♦ Up to 95% Efficiency  
♦ Low-Cost External Components  
♦ No Current-Sense Resistor  
♦ All n-Channel MOSFET Design  
The MAX8545/MAX8546/MAX8548 have a wide 2.7V to  
28V input range, and do not need any additional bias  
voltage. The output voltage can be precisely regulated  
from 0.8V to 0.83 x V . These devices can provide effi-  
IN  
♦ Adaptive Gate Drivers Eliminate Shoot-Through  
ciency up to 95%. Lossless short-circuit and current-limit  
protection is provided by monitoring the R  
of the  
DS(ON)  
♦ Lossless Overcurrent and Short-Circuit  
Protection  
low-side MOSFET. The MAX8545 and MAX8548 have a  
current-limit threshold of 320mV, while the MAX8546 has  
a current-limit threshold of 165mV. All devices feature  
foldback-current capability to minimize power dissipation  
under short-circuit condition. Pulling the COMP/EN pin  
low with an open-collector or low-capacitance, open-  
drain device can shut down all devices.  
♦ 300kHz Switching Frequency  
(MAX8545/MAX8546)  
♦ 100kHz Switching Frequency (MAX8548)  
♦ Pin-Compatible with the MAX1967  
♦ Thermal Shutdown  
The MAX8545/MAX8546 operate at 300kHz and the  
MAX8548 operates at 100kHz. The MAX8545/MAX8546/  
MAX8548 are compatible with low-cost aluminum elec-  
trolytic capacitors. Input undervoltage lockout prevents  
proper operation under power-sag operations to prevent  
external MOSFETs from overheating. Internal soft-start is  
included to reduce inrush current. These devices are  
Selector Guide  
SWITCHING  
FREQUENCY  
(kHz)  
CURRENT-LIMIT  
THRESHOLD  
(mV)  
PART  
MAX8545  
300  
300  
100  
-320  
-165  
-320  
®
offered in space-saving 10-pin µMAX packages.  
MAX8546  
MAX8548  
Applications  
Set-Top Boxes  
Graphic Card and Video  
Supplies  
Notebook Docking  
Station Supplies  
Typical Operating Circuit  
Cable Modems and  
Routers  
INPUT  
2.7V TO 28V  
Desktops and Desknotes  
Networking Power  
Supplies  
PCI Express Power  
Supplies  
V
VL  
CC  
Telecom Power Supplies  
OUTPUT  
0.8V TO  
V
IN  
BST  
DH  
Ordering Information  
0.9 x V  
IN  
UP TO 6A  
PIN-  
PKG  
LX  
DL  
MAX8545  
MAX8546  
MAX8548  
PART  
TEMP RANGE  
PACKAGE  
CODE  
10 µMAX  
10 µMAX  
10 µMAX  
10 µMAX  
10 µMAX  
10 µMAX  
MAX8545EUB  
MAX8545EUB+  
MAX8546EUB  
MAX8546EUB+  
MAX8548EUB  
MAX8548EUB+  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
U10-2  
U10-2  
U10-2  
U10-2  
U10-2  
U10-2  
GND  
COMP/  
EN  
OFF  
FB  
ON  
OPTIONAL  
+Denotes a lead-free package.  
µMAX is a registered trademark of Maxim Integrated Products, Inc.  
Pin Configuration appears at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
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MAX8545EUB+ 替代型号

型号 品牌 替代类型 描述 数据表
MAX8545EUB+T MAXIM

类似代替

 Switching Controller, Voltage-mode, 360kHz Switching Freq-Max, BICMOS, PDSO10, MO-187C-BA,
MAX8545EUB MAXIM

类似代替

 Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit
MAX8545EUB-T MAXIM

功能相似

 Switching Controller, Voltage-mode, 360kHz Switching Freq-Max, BICMOS, PDSO10, MO-187CBA,

与MAX8545EUB+相关器件

型号 品牌 获取价格 描述 数据表
MAX8545EUB+T MAXIM

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 		Switching Controller, Voltage-mode, 360kHz Switching Freq-Max, BICMOS, PDSO10, MO-187C-BA,
MAX8545EUB-T MAXIM

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 		Switching Controller, Voltage-mode, 360kHz Switching Freq-Max, BICMOS, PDSO10, MO-187CBA,
MAX8546 MAXIM

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 		Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit
MAX8546 ADI

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 		低成本、宽输入范围、降压型控制器，带有折返式限流
MAX8546EUB MAXIM

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 		PLASTIC ENCAPSULATED DEVICES
MAX8546EUB+ MAXIM

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 		Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit
MAX8546EUB+T MAXIM

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 		Switching Controller, Voltage-mode, 360kHz Switching Freq-Max, BICMOS, PDSO10, MO-187C-BA,
MAX8546EVKIT MAXIM

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 		Evaluation Kit for the MAX8545/MAX8546/MAX8548
MAX8548 MAXIM

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 		Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit
MAX8548 ADI

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 		低成本、宽输入范围、降压型控制器，带有折返式限流

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