Datasheet > 电源电路 > 开关式稳压器或控制器> MAX1638EEG

MAX1638EEG

更新时间： 2024-09-14 23:45:47

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
16页	151K
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MAX1638EEG 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：	SOIC
包装说明：	SSOP, SSOP24,.24	针数：	24
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.69
Is Samacsys：	N	模拟集成电路 - 其他类型：	SWITCHING CONTROLLER
控制模式：	CURRENT-MODE	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-G24	JESD-609代码：	e0
长度：	8.65 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	24
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：	SSOP
封装等效代码：	SSOP24,.24	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：	1.75 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：	1000 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

MAX1638EEG 数据手册

19-1313; Rev 0; 11/97

Hig h -S p e e d S t e p -Do w n Co n t ro lle r w it h

S yn c h ro n o u s Re c t ific a t io n fo r CP U P o w e r

MAX1638

_______________Ge n e ra l De s c rip t io n

____________________________Fe a t u re s

♦ Better than ±1% Output Accuracy Over

The MAX1638 is an ultra-high-performance, step-down

DC-DC controller for CPU power in high-end computer

systems. Designed for demanding applications in which

output voltage precision and good transient response are

critical for proper operation, it delivers over 35A from 1.3V

to 3.5V with ±1% total accuracy from a +5V ±10% supply.

Excellent dynamic response corrects output transients

caused by the latest dynamically clocked CPUs. This

controller achieves over 90% efficiency by using synchro-

nous rectification. Flying-capacitor bootstrap circuitry

drives inexpensive, external N-channel MOSFETs.

Line and Load

♦ Greater than 90% Efficiency Using N-Channel

MOSFETs

♦ Pin-Selected High Switching Frequency (300kHz,

600kHz, or 1MHz)

♦ Over 35A Output Current

♦ Digitally Programmable Output from 1.3V to 3.5V

♦ Current-Mode Control for Fast Transient

Response and Cycle-by-Cycle Current-Limit

Protection

The switching frequency is pin-selectable for 300kHz,

600kHz, or 1MHz. High switching frequencies allow the

use of a small surface-mount inductor and decrease out-

put filter capacitor requirements, reducing board area

and system cost.

♦ Short-Circuit Protection with Foldback Current

Limiting

♦ Glitch-Catcher Circuit for Fast Load-Transient

Response

The MAX1638 is available in 24-pin SSOP and QSOP

(future package) packages, and offers additional fea-

ture s s uc h a s a d ig ita lly p rog ra mma b le outp ut;

adjustable transient response; and selectable 0.5%, 1%,

or 2% AC load regulation. Fast recovery from load tran-

sients is ensured by a GlitchCatcher™ current-boost cir-

cuit that eliminates delays caused by the buck inductor.

Output overvoltage protection is enforced by a crowbar

circuit that turns on the low-side MOSFET with 100%

duty factor when the output is 200mV above the normal

regulation point. Other features include internal digital

soft-start, a power-good output, and a 3.5V ±1% refer-

ence output.

♦ Crowbar Overvoltage Protection

♦ Power-Good (PWROK) Output

♦ Digital Soft-Start

♦ High-Current (2A) Drive Outputs

♦ Complies with Intel VRM 8.2 Specification

__________Typ ic a l Op e ra t in g Circ u it

INPUT

+5V

AGND

BST

________________________Ap p lic a t io n s

Pentium Pro™, Pentium II™, PowerPC™, Alpha™,

and K6™ Systems

TO V

MAX1638

Workstations

OUTPUT

1.3V TO 4.5V

Desktop Computers

LAN Servers

PWROK

GTL Bus Termination

PGND

______________Ord e rin g In fo rm a t io n

PART

TEMP. RANGE

-40°C to +85°C

PIN-PACKAGE

24 SSOP

REF

CSH

CSL

MAX1638EAG

MAX1638EEG*

24 QSOP

FREQ

CC1

Pin Configuration appears at end of data sheet.

*Future product—contact factory for package availability.

CC2

Pentium Pro and Pentium II are trademarks of Intel Corp.

PowerPC is a trademark of IBM Corp.

Alpha is a trademark of Digital Equipment Corp.

K6 is a trademark of Advanced Micro Devices.

GlitchCatcher is a trademark of Maxim Integrated Products.

________________________________________________________________ Maxim Integrated Products

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 408-737-7600 ext. 3468.

12 3 4 5 6 7...16

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与MAX1638EEG相关器件

型号	品牌	获取价格	描述	数据表
MAX1638EVKIT	MAXIM	获取价格	Isolated Transformer Driver for PCMCIA Applications[MAX845/MAX845C/D/MAX845ESA/MAX845ESA-T
MAX1639	MAXIM	获取价格	High-Speed Step-Down Controller with Synchronous Rectification for CPU Power
MAX1639	ADI	获取价格	高速、同步整流、降压型控制器，用于CPU电源
MAX1639ESE	MAXIM	获取价格	High-Speed Step-Down Controller with Synchronous Rectification for CPU Power
MAX1639ESE+	MAXIM	获取价格	Switching Controller, Current-mode, 1200kHz Switching Freq-Max, BICMOS, PDSO16, LEAD FREE,
MAX1639ESE+T	MAXIM	获取价格	Switching Controller, Current-mode, 1200kHz Switching Freq-Max, BICMOS, PDSO16, SOIC-16
MAX1639ESE-T	MAXIM	获取价格	Switching Controller, Current-mode, 1200kHz Switching Freq-Max, BICMOS, PDSO16, SOIC-16
MAX1639EVKIT	MAXIM	获取价格	Evaluation Kit the MAX1639
MAX163BCNG	MAXIM	获取价格	CMOS 12-Bit A/D Converters With Track-and-Hold
MAX163BCNG+	MAXIM	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, Parallel, 8 Bits Access, CMOS, PDIP24, PLAS

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