Datasheet > MAX8772GTL+

MAX8772GTL+

更新时间： 2024-11-21 20:10:51

品牌	Logo	应用领域
美信 - MAXIM		信息通信管理开关
页数	文件大小	规格书
47页	1018K
描述
Switching Regulator, Current-mode, 600kHz Switching Freq-Max, BICMOS, QFN-40

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MAX8772GTL+ 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	HVQCCN,	Reach Compliance Code：	compliant
风险等级：	5.82	其他特性：	ALSO OPERATES IN PFM MODE
模拟集成电路 - 其他类型：	SWITCHING REGULATOR	控制模式：	CURRENT-MODE
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：	S-XQCC-N40	JESD-609代码：	e3
长度：	6 mm	功能数量：	1
端子数量：	40	最高工作温度：	105 °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）：	260
座面最大高度：	0.8 mm	表面贴装：	YES
切换器配置：	BUCK	最大切换频率：	600 kHz
技术：	BICMOS	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn)	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

MAX8772GTL+ 数据手册

CONFIDENTIAL INFORMATION – RESTRICTED TO INTEL IMVP-6 LICENSEES

19-3913; Rev 0; 10/05

MAX8770/MAX8771/MAX8772 Dual-Phase, Quick-

PWM Controller for IMVP-6+ CPU Core Power Supplies

General Description

Features

The MAX8770/MAX8771/MAX8772 are 2/1-phase inter-

leaved Quick-PWM™ step-down VID power-supply con-

trollers for notebook CPUs. True out-of-phase operation

reduces input ripple current requirements and output volt-

age ripple while easing component selection and layout

difficulties. The Quick-PWM control provides instanta-

neous response to fast load current steps. Active voltage

positioning reduces power dissipation and bulk output

capacitance requirements and allows ideal positioning

compensation for tantalum, polymer, or ceramic bulk out-

put capacitors.

♦ Single/Dual-Phase, Quick-PWM Controller

0.4% V_OUTAccuracy Over Line, Load, and

Temperature

♦

♦ 7-Bit On-Board DAC: 0 to +1.5000V Output Adjust

Range

♦ Dynamic Phase Selection Optimizes Active/Sleep

Efficiency

♦ Transient Phase Overlap Reduces Output

Capacitance

The MAX8770/MAX8771/MAX8772 are intended for two

different notebook CPU core applications: either bucking

down the battery directly to create the core voltage, or

else bucking down the +5V system supply. The single-

stage conversion method allows this device to directly

step down high-voltage batteries for the highest possible

efficiency. Alternatively, 2-stage conversion (stepping

down the +5V system supply instead of the battery) at

higher switching frequency provides the minimum possi-

ble physical size.

♦ Integrated Boost Switches

♦ Active Voltage Positioning with Adjustable Gain

♦ Programmable 200kHz to 600kHz Switching

Frequency

♦ Accurate Current Balance and Current Limit

♦ Adjustable Slew-Rate Control

♦ Power-Good (PWRGD), Clock Enable (CLKEN),

Power Monitor (POUT) and Thermal Fault

(VRHOT) Outputs

A slew-rate controller allows controlled transitions

between VID codes, controlled soft-start and shutdown,

and controlled exit from suspend. A thermistor-based

temperature sensor provides a programmable thermal-

fault output (VRHOT). A power-monitor output (POUT)

provides an analog voltage output proportional to the

power consumed by the CPU. The MAX8770/MAX8771/

MAX8772 include output undervoltage protection (UVP)

and thermal protection, and the MAX8770/MAX8771 also

include overvoltage protection (OVP). When any of these

protection features detect a fault, the controller shuts

down. A voltage-regulator power-OK (PWRGD) output

indicates the output is in regulation. A clock enable

(CLKEN) output provides proper system startup sequenc-

ing. Additionally, the MAX8771 has a phase-good

(PHASEGD) output, and the MAX8770/MAX8772 includes

true differential current sense.

♦ Phase Fault (PHASEGD) Output (MAX8771)

♦ Drives Large Synchronous Rectifier MOSFETs

♦ 4V to 26V Battery-Input-Voltage Range

♦ Output OV Protection (MAX8770/MAX8771)

♦ UV and Thermal-Fault Protection

♦ Power Sequencing and Timing

♦ Soft-Startup and Soft-Shutdown

Ordering Information

PART

TEMP

PIN-PACKAGE

MAX8770GTL+ -40°C to +105°C 40 Thin QFN 6mm x 6mm

MAX8771GTL+ -40°C to +105°C 40 Thin QFN 6mm x 6mm

MAX8772GTL+ -40°C to +105°C 40 Thin QFN 6mm x 6mm

+Denotes lead-free package.

The MAX8770/MAX8771/MAX8772 implement the Intel

IMVP-6+ code set and the required IMVP-6+ control sig-

nals. The MAX8770/MAX8771/MAX8772 are available in a

40-pin TQFN package.

Applications

IMVP-6+ Core Supply

Multiphase CPU Core Supply

Voltage-Positioned, Step-Down Converters

Notebook/Desktop Computers

Blade Servers

Pin Configuration appears at end of data sheet.

Intel is a registered trademark of Intel, Corp.

Quick-PWM is a 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...47

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