Datasheet > MAX8545EUB-T

MAX8545EUB-T

更新时间： 2024-11-28 20:47:47

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
18页	720K
描述
Switching Controller, Voltage-mode, 360kHz Switching Freq-Max, BICMOS, PDSO10, MO-187CBA, MICRO, SOP-10

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MAX8545EUB-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_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.21
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-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
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）：	245
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 (Sn/Pb)	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-T 数据手册

19-2795; Rev 1; 5/05

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

♦ 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-

♦ 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

♦ 300kHz Switching Frequency

(MAX8545/MAX8546)

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.

♦ 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

CURRENT-LIMIT

THRESHOLD

PART

MAX8545

300kHz

100kHz

-320mV

-165mV

-320mV

offered in space-saving 10-pin µMAX packages.

MAX8546

MAX8548

Applications

Set-Top Boxes

Graphic Card and Video

Supplies

Notebook Docking

Station Supplies

Cable Modems and

Routers

Typical Operating Circuit

INPUT

2.7V TO 28V

Desktops and Desknotes

Networking Power

Supplies

PCI Express Power

Supplies

Telecom Power Supplies

OUTPUT

0.8V TO

BST

0.9 x V

Ordering Information

UP TO 6A

MAX8545

MAX8546

MAX8548

PART

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

10 µMAX

MAX8545EUB

MAX8545EUB+

MAX8546EUB

MAX8546EUB+

MAX8548EUB

MAX8548EUB+

GND

10 µMAX

COMP/

10 µMAX

OFF

10 µMAX

OPTIONAL

+Denotes lead-free package.

µMax is a registered trademark of Maxim Integrated Products, Inc.

Pin Configuration appears at end of data sheet.

________________________________________________________________ Maxim Integrated Products

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.

12 3 4 5 6 7...18

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MAX8545EUB-T 替代型号

型号	品牌	替代类型	描述	数据表
MAX8545EUB+T	MAXIM	功能相似	Switching Controller, Voltage-mode, 360kHz Switching Freq-Max, BICMOS, PDSO10, MO-187C-BA,
MAX8545EUB+	MAXIM	功能相似	Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit
MAX8545EUB	MAXIM	功能相似	Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit

与MAX8545EUB-T相关器件

型号	品牌	获取价格	描述	数据表
MAX8546	MAXIM	获取价格	Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit
MAX8546	ADI	获取价格	低成本、宽输入范围、降压型控制器，带有折返式限流
MAX8546EUB	MAXIM	获取价格	PLASTIC ENCAPSULATED DEVICES
MAX8546EUB+	MAXIM	获取价格	Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit
MAX8546EUB+T	MAXIM	获取价格	Switching Controller, Voltage-mode, 360kHz Switching Freq-Max, BICMOS, PDSO10, MO-187C-BA,
MAX8546EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX8545/MAX8546/MAX8548
MAX8548	MAXIM	获取价格	Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit
MAX8548	ADI	获取价格	低成本、宽输入范围、降压型控制器，带有折返式限流
MAX8548EUB	MAXIM	获取价格	Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit
MAX8548EUB+	MAXIM	获取价格	Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit

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