MAX8792ETD+

更新时间： 2024-11-11 13:11:07

品牌	Logo	应用领域
美信 - MAXIM		控制器
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29页	454K
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MAX8792ETD+ 数据手册

19-0739; Rev 0; 1/07

Single Quick-PWM Step-Down

Controller with Dynamic REFIN

MAX8792

General Description

Features

o Quick-PWM with Fast Transient Response

The MAX8792 pulse-width modulation (PWM) controller

provides high efficiency, excellent transient response,

and high DC-output accuracy needed for stepping

down high-voltage batteries to generate low-voltage

core or chipset/RAM bias supplies in notebook comput-

ers. The output voltage can be dynamically controlled

using the dynamic REFIN, which supports input volt-

ages between 0 to 2V. The REFIN adjustability com-

bined with a resistive voltage-divider on the feedback

input allows the MAX8792 to be configured for any out-

o Supports Any Output Capacitor

No Compensation Required with

Polymers/Tantalum

Stable with Ceramic Output Capacitors Using

External Compensation

o Precision 2V ±±1mV Reꢀerence

o Dynamically Adjustable Output Voltage

(1 to 1.9 V Range)

Feedback Input Regulates to 1 to 2V REFIN

Voltage

put voltage between 0 to 0.9 V .

1.5% V

Accuracy Over Line and Load

OUT

Maxim’s proprietary Quick-PWM™ quick-response, con-

stant-on-time PWM control scheme handles wide

input/output voltage ratios (low-duty-cycle applications)

with ease and provides 100ns “instant-on” response to

load transients while maintaining a relatively constant

switching frequency. Strong drivers allow the MAX8792

to efficiently drive large synchronous-rectifier MOSFETs.

o 26V Maximum Input Voltage Rating

o Adjustable Valley Current-Limit Protection

Thermal Compensation with NTC

Supports Foldback Current Limit

o Resistively Programmable Switching Frequency

o Overvoltage Protection

The controller senses the current across the synchro-

nous rectifier to achieve a low-cost and highly efficient

valley current-limit protection. The adjustable current-

limit threshold provides a high degree of flexibility,

allowing thermally compensated protection using an

NTC or foldback current-limit protection using a volt-

age-divider derived from the output.

o Undervoltage/Thermal Protection

o Voltage Soꢀt-Start and Soꢀt-Shutdown

o Monotonic Power-Up with Precharged Output

o Power-Good Window Comparator

Ordering Information

The MAX8792 includes a voltage-controlled soft-start

and soft-shutdown in order to limit the input surge cur-

rent, provide a monotonic power-up (even into a

precharged output), and provide a predictable power-

up time. The controller also includes output fault protec-

tion—undervoltage and overvoltage protection—as well

as thermal-fault protection.

PKG

CODE MARK

TOP

PART

PIN-PACKAGE

MAX8792ETD+T 14 TDFN-EP* 3mm x 3mm T1433-1 ADC

Note: This device is specified over the -40°C to +80°C operating

temperature range.

+Denotes a lead-free package.

The MAX8792 is available in a tiny 14-pin, 3mm x 3mm

TDFN package. For space-constrained applications,

refer to the MAX17016 single step-down with 10A, 26V

internal MOSFETs available in a small 40-pin, 6mm x

6mm TQFN package.

Pin Configuration

TOP VIEW

14 13 12 11 10

Applications

Notebook Computers

I/O and Chipset Supplies

GPU Core Supply

MAX8792

DDR Memory—VDDQ or VTT

Point-of-Load Applications

Step-Down Power Supply

GND

TDFN

(3mm x 3mm)

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

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering inꢀormation, please contact Maxim/Dallas Direct! at

±-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...29

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与MAX8792ETD+相关器件

型号	品牌	获取价格	描述	数据表
MAX8792ETD+T	MAXIM	获取价格	Switching Controller, Current-mode, 3A, BICMOS, PDSO14, 3 X 3 MM, ROHS COMPLIANT, TDFN-14
MAX8792ETDT	MAXIM	获取价格	Single Quick-PWM Step-Down Controller with Dynamic REFIN
MAX8792EVKIT	MAXIM	获取价格	300kHz Switching Frequency
MAX8792EVKIT+	MAXIM	获取价格	300kHz Switching Frequency
MAX8794	MAXIM	获取价格	Low-Voltage DDR Linear Regulator
MAX8794	ADI	获取价格	低电压、DDR线性稳压器
MAX8794_07	MAXIM	获取价格	Low-Voltage DDR Linear Regulator
MAX8794_10	MAXIM	获取价格	Low-Voltage DDR Linear Regulator
MAX8794ETB	MAXIM	获取价格	Low-Voltage DDR Linear Regulator
MAX8794ETB/V+	MAXIM	获取价格	Adjustable Positive Standard Regulator, 0.5V Min, 1.5V Max, BICMOS, PDSO10, 3 X 3 MM, ROHS

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