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MAX1887EEE-T

更新时间： 2024-11-05 13:02:19

品牌	Logo	应用领域
美信 - MAXIM		控制器
页数	文件大小	规格书
33页	1015K
描述
Switching Controller, 40A, 300kHz Switching Freq-Max, BICMOS, PDSO16, QSOP-16

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MAX1887EEE-T 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	QSOP-16
针数：	16	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.66	其他特性：	ALSO REQUIRES A BATTERY VOLTAGE OF 4V TO 28V
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER	控制技术：	PULSE WIDTH MODULATION
最大输入电压：	5.5 V	最小输入电压：	4.5 V
标称输入电压：	5 V	JESD-30 代码：	R-PDSO-G16
JESD-609代码：	e0	长度：	4.89 mm
湿度敏感等级：	1	功能数量：	1
端子数量：	16	最高工作温度：	85 °C
最低工作温度：	-40 °C	最大输出电流：	40 A
封装主体材料：	PLASTIC/EPOXY	封装代码：	SSOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：	245	认证状态：	Not Qualified
座面最大高度：	1.73 mm	表面贴装：	YES
切换器配置：	PUSH-PULL	最大切换频率：	300 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：	0.635 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

MAX1887EEE-T 数据手册

19-2188; Rev 1; 9/02

Quick-PWM Slave Controllers for

Multiphase, Step-Down Supplies

General Description

Features

The MAX1887/MAX1897 step-down slave controllers are

intended for low-voltage, high-current, multiphase DC-to-

DC applications. The MAX1887/MAX1897 slave con-

trollers can be combined with any of Maxim’s

Quick-PWM™ step-down controllers to form a multiphase

DC-to-DC converter. Existing Quick-PWM controllers,

such as the MAX1718, function as the master controller,

providing accurate output voltage regulation, fast tran-

sient response, and fault protection features.

Synchronized to the master’s low-side gate driver, the

MAX1887/MAX1897 include the Quick-PWM constant on-

time controller, gate drivers for a synchronous rectifier,

active current balancing, and precision current-limit cir-

cuitry.

o Quick-PWM Slave Controller

o Precise, Active Current Balance (±±1.25m ꢀ

o Accurate, Adjustable Current-Li5it Threshold

o Opti5ized for Low-Output moltages (≤.mꢀ

o 4m to .8m Battery Input Range

o Fixed 300kHz (MAX±887ꢀ or Selectable

.00kHz/300kHz/220kHz (MAX±897ꢀ Switching

Frequency

o Drive Large Synchronous-Rectifier MOSFETs

o 2.2µA (typꢀ I

Supply Current

o .0µA Standby Supply Current

The MAX1887/MAX1897 provide the same high effi-

ciency, ultra-low duty factor capability, and excellent

transient response as other Quick-PWM controllers. The

MAX1887/MAX1897 differentially sense the inductor

currents of both the master and the slave across cur-

rent-sense resistors. These differential inputs and the

adjustable current-limit threshold derived from an exter-

nal reference allow the slave controller to accurately

balance the inductor currents and provide precise cur-

rent-limit protection. The MAX1887/MAX1897’s dual-

purpose current-limit input also allows the slave

controller to automatically enter a low-power standby

mode when the master controller shuts down.

o <±µA Shutdown (MAX±897ꢀ Supply Current

o S5all ±6-Pin QSOP (MAX±887ꢀ, Co5pact

.0-Pin 255 x 255 QFN (MAX±897ꢀ, or

.0-Pin 255 x 255 Thin QFN (MAX±897ꢀ

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX±887EEE -40°C to +85°C 16 QSOP

MAX±897EGP*

-40°C to +85°C 20 QFN 5mm 5mm

MAX1897ETP -40°C to +85°C 20 Thin QFN 5mm 5mm

The MAX1887 triggers on the rising edge of the mas-

ter’s low-side gate driver, which staggers the on-times

of both master and slave, providing out-of-phase oper-

ation that can reduce the input ripple current and con-

sequently the number of input capacitors. The

MAX1897 features a selectable trigger polarity, allowing

out-of-phase or simultaneous in-phase operation.

*Contact factory for availability.

Pin Configuration

TOP VIEW

19 18

17 16

Applications

CM+

CM-

TON

Notebook Computers

CPU Core Supply

Single-Stage (BATT to V

) Converters

CORE

SHDN

MAX1897

Two-Stage (5V to V

) Converters

CORE

CS-

CS+

Servers/Desktop Computers

Telecom

Typical Operating Circuit appears at end of data sheet.

THIN QFN 255 x 255

Pin Configurations continued at end of data sheet.

Quick-PWM is a registered trademark of Maxim Integrated

Products, Inc.

________________________________________________________________ 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...33

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与MAX1887EEE-T相关器件

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MAX1888	MAXIM	获取价格	Low-Cost Integrated Offset Logic for Notebook CPU Power Supplies
MAX1888EUA	MAXIM	获取价格	Low-Cost Integrated Offset Logic for Notebook CPU Power Supplies
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MAX1888EUA-T	MAXIM	获取价格	Analog Circuit, 1 Func, CMOS, PDSO8, MICRO MAX PACKAGE-8
MAX1889	MAXIM	获取价格	Triple-Output TFT LCD Power Supply with Fault Protection
MAX1889EGE	MAXIM	获取价格	Triple-Output TFT LCD Power Supply with Fault Protection
MAX1889ETE	MAXIM	获取价格	Triple-Output TFT LCD Power Supply with Fault Protection
MAX1889ETE+	MAXIM	获取价格	Switching Regulator, Current-mode, 2.8A, 1250kHz Switching Freq-Max, BICMOS, 5 X 5 MM, 0.8
MAX1889EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX1889
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