Datasheet > 电源电路 > 开关式稳压器或控制器> MAX1981A

MAX1981A

更新时间： 2024-09-25 12:49:51

品牌	Logo	应用领域
美信 - MAXIM		控制器
页数	文件大小	规格书
1页	21K
描述
Quick-PWM Master Controllers for Voltage-Positioned CPU Core Power Supplies (IMVP-IV)

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

MAX1981A 数据手册

19-2678; Rev 0; 9/02

Qu ic k -P WM Ma s t e r Co n t ro lle rs fo r Vo lt a g e -

P o s it io n e d CP U Co re P o w e r S u p p lie s (IMVP -IV)

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

Fe a t u re s

The MAX1907A/MAX1981A are single-phase, Quick-

PWM™ master controllers for IMVP-IV™ CPU core sup-

p lie s . Multi-p ha s e op e ra tion is a c hie ve d us ing a

Quick-PWM slave controller (MAX1980). Multiphase

operation reduces input ripple current requirements

a nd outp ut volta g e rip p le while e a s ing c omp one nt

s e le c tion a nd la yout d iffic ultie s . The MAX1907A/

MAX1981A inc lud e a c tive volta g e p os itioning with

adjustable gain and offset, reducing power dissipation

and bulk output capacitance requirements.

♦ Quick-PWM Master Controllers

♦ Multiphase Conversion with Slave Controller

(MAX1980)

♦ Active Voltage Positioning with Adjustable Gain

and Offset

♦ Adjustable Slew Rate Control

♦ ±0.75% V

Accuracy Over Line, Load, and

OUT

Temperature

The MAX1907A/MAX1981A are intended for two differ-

ent notebook CPU core applications: either bucking

down the battery directly, or 5V system supply to create

the core voltage. The single-stage conversion method

allows these devices to directly step down high-voltage

b a tte rie s for the hig he s t p os s ib le e ffic ie nc y.

Alternatively, two-stage conversion (stepping down the

5V s ys te m s up p ly ins te a d of the b a tte ry) a t hig he r

switching frequency provides the minimum possible

physical size.

♦ 6-Bit On-Board DAC (16mV Increments)

♦ 0.700V to 1.708V Output Adjust Range

♦ Selectable 200kHz/300kHz/550kHz/1000kHz

Switching Frequency

♦ 2V to 28V Battery Input Voltage Range

♦ Drive Large Synchronous Rectifier MOSFETs

♦ Output Overvoltage Protection (MAX1907A Only)

♦ Undervoltage and Thermal Fault Protection

♦ Power Sequencing and Selectable Boot Voltage

The MAX1907A/MAX1981A meet the IMVP-IV specifica-

tions and include logic to interface with the CPU power

good signals from the V

and V

rails within the

♦

♦ Low-Profile 40-Pin Thin QFN, 6mm 6mm

CCP

CCMCH

system. The regulator features power-up sequencing,

automatically ramping up to the Intel-specified boot volt-

age. The MAX1907A/MAX1981A feature independent

four-le ve l log ic inp uts for s e tting the b oot volta g e

(B0–B2) and the suspend voltage (S0–S2).

Package

Ord e rin g In fo rm a t io n

PART

TEMP RANGE PIN-PACKAGE

MAX1907AETL -40°C to +100°C 40-QFN Thin 6mm x 6mm

MAX1981AETL -40°C to +100°C 40-QFN Thin 6mm x 6mm

The MAX1907A/MAX1981A include output undervoltage

protection, thermal protection, and system power-OK

(SYSPOK) input/output. When any of these protection fea-

tures detect a fault, the MAX1907A/MAX1981A immedi-

ately shut down. Additionally, the MAX1907A includes

overvoltage protection.

P in Co n fig u ra t io n

TOP VIEW

The MAX1907A/MAX1981A are available in a thin 40-pin

QFN package.

40 39 38

37 36 35 34 33 32 31

Ap p lic a t io n s

IMVP-IV™ Notebook Computers

PGND

27 DDO

Single-Phase CPU Core Supply

MAX1907A

MAX1981A

Multiphase CPU Core Supply

SHDN

REF

ILIM

Voltage-Positioned Step-Down Converters

Servers/Desktop Computers

Typical Operating Circuit appears at end of data sheet.

11 12 13 14 15 16 17 18 19 20

Quick-PWM is a trademark of Maxim Integrated Products, Inc.

IMVP-IV is a trademark of Intel Corp.

40-Pin, 6mm x 6mm Thin QFN

________________________________________________________________ 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.

中文翻译

下载PDF

与MAX1981A相关器件

型号	品牌	获取价格	描述	数据表
MAX1981AETL	MAXIM	获取价格	Quick-PWM Master Controllers for Voltage-Positioned CPU Core Power Supplies (IMVP-IV)
MAX1982	MAXIM	获取价格	Low-Voltage, Low-Dropout Linear Regulators with External Bias Supply
MAX1982	ADI	获取价格	低电压、低压差线性稳压器，外部偏置电源
MAX1982_08	MAXIM	获取价格	Low-Voltage, Low-Dropout Linear Regulators with External Bias Supply
MAX1982EUT	MAXIM	获取价格	Regulator, 1 Output, BICMOS, PDSO6,
MAX1982EUT+	MAXIM	获取价格	Adjustable Positive LDO Regulator,
MAX1982EUT+T	MAXIM	获取价格	Low-Voltage, Low-Dropout Linear Regulators with External Bias Supply
MAX1982EUT-T	MAXIM	获取价格	Low-Voltage, Low-Dropout Linear Regulators with External Bias Supply
MAX1982EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX1982/MAX1983
MAX1982-MAX1983	MAXIM	获取价格	Low-Voltage, Low-Dropout Linear Regulators with External Bias Supply

与MAX1981A相关文章

塔塔电子与力积电达成技术转让协议，携手建设印度首座晶圆厂
2024-09-29

6
英特尔震撼发布：128核心256线程的至强6性能核处理器
2024-09-29

8
SK海力士量产12层HBM3E，容量高达36GB
2024-09-27

11
意法半导体传感器驱动Sphere，开启沉浸式电影新时代
2024-09-27

16

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX1981A

MAX1981A 数据手册

与MAX1981A相关器件

与MAX1981A相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX1981A

MAX1981A 数据手册

与MAX1981A相关器件

与MAX1981A相关文章

您还可以找

您在本页遇到什么问题？