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MAX1981AETL

更新时间： 2024-09-25 12:49:51

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信息通信管理
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)

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技术参数
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MAX1981AETL 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：	QFN
包装说明：	6 X 6 MM, 0.80 MM HEIGHT, MO-220WJJD-2, QFN-40	针数：	40
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.31.00.01	风险等级：	5.66
Is Samacsys：	N	其他特性：	ALSO OPERATES IN ADJUSTABLE MODE FROM 0.7V TO 1.708V; ALSO HAS PFM CONTROL TECHNIQUE
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER	控制模式：	CURRENT-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	28 V
最小输入电压：	2 V	标称输入电压：	15 V
JESD-30 代码：	S-XQCC-N40	JESD-609代码：	e0
长度：	6 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	40
最高工作温度：	100 °C	最低工作温度：	-40 °C
封装主体材料：	UNSPECIFIED	封装代码：	HVQCCN
封装形状：	SQUARE	封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：	NOT SPECIFIED	认证状态：	Not Qualified
座面最大高度：	0.8 mm	表面贴装：	YES
切换器配置：	SINGLE	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：	NO LEAD
端子节距：	0.5 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	6 mm
Base Number Matches：	1

MAX1981AETL 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.

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