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MAX8553ETI

更新时间： 2024-11-26 11:14:35

品牌	Logo	应用领域
美信 - MAXIM		调节器开关
页数	文件大小	规格书
1页	110K
描述
Dual, 5A, 1.5MHz Step-Down Regulator with Integrated High-Side Switches

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MAX8553ETI 数据手册

XX-XXXX; Rev 0; 7/07

Dual, 5A, 1.5MHz Step-Down

Regulator with Integrated High-Side Switches

General Description

Features

, High-Side MOSFETs

The MAX8653 dual-output, synchronous, step-down reg-

♦ Integrated 80mΩ R

DS(ON)

ulator contains low R

integrated high-side

DS(ON)

♦ Adjustable Hiccup-Mode Short-Circuit Current-

Limit Protection

♦ ±±1 Output Accuracꢀ oꢁer Load, Line, and

Temperature

♦ 9V to ±4V Input Supplꢀ Range

♦ Adjustable Output Down to 0.6V

♦ Digital Soft-Start Reduces Inrush Supplꢀ Current

♦ 300kHz to ±.5MHz Adjustable Switching

Frequencꢀ

♦ External Frequencꢀ Sꢀnchronization

♦ Compatible with Ceramic, Polꢀmer, and

Electrolꢀtic Capacitors

MOSFET switches for ease of layout and achieving small

footprints. Each output delivers up to 5A. The output

voltage is adjustable down to 0.6V and operates from a

9V to 14V input voltage. The MAX8653 uses a proprietary

high-bandwidth, constant-frequency, peak-voltage-mode

control architecture and operates at an adjustable switch-

ing frequency between 300kHz to 1.5MHz. The architec-

ture is suitable for use with a wide range of output

capacitor technologies such as aluminum electrolytic,

POSCAPs, and ceramic capacitors for flexible design.

The simple compensation scheme achieves fast

response under both line and load transients.

The switching frequency is adjustable using a single

external resistor. The output channels operate 180° out-

of-phase to reduce the input ripple current, thus reduc-

ing the required input capacitance. The high operating

frequency minimizes the size of external components.

The external reference input (REFIN) enables imple-

mentation of tracking applications such as DDR power

supplies. The MAX8653 utilizes internal digital soft-start

and features a lossless (cycle-by-cycle) current sens-

ing. It includes adjustable, hiccup-mode current-limit

and short-circuit protection for minimum power dissipa-

tion under fault conditions. Each output contains an

enable (EN_) input along with a power-good (POK_)

signal for easy sequencing. The MAX8653 is available

in a 28-pin, 5mm x 5mm Thin QFN package.

♦ ±80° Out-of-Phase Operation

♦ Enable and POK for Each Output

♦ REFIN Feature for Tracking Applications

♦ 28-Lead 5mm x 5mm Thin QFN Package

Ordering Information

TEMP

RANGE*

PKG

CODE

PART

PIN-PACKAGE

28 Thin QFN-EP**

(5mm x 5mm)

MAX8653ETI+ -40°C to +85°C

T2855-5

+Denotes lead-free package.

Applications

*The MAX8653 is specified in the extended temperature range.

**EP = Exposed pad.

Telecom

Network Equipment

Storage

DDR Memories

DSL

Pin Configuration appears at end of data sheet.

Set-Top Box

Cable Modem

Servers

Typical Operating Circuit

V+

IN1

INPUT

IN2

9V TO 14V

POK1

BST1

POK2

BST2

LX1

DL1

LX2

DL2

OUTPUT2

3.3V, 2A

OUTPUT

1.5V, 5A

MAX8653

FB1

FB2

ILIM1

ILIM2

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim's website at www.maxim-ic.com.

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与MAX8553ETI相关器件

型号	品牌	获取价格	描述	数据表
MAX8553-MAX8554	MAXIM	获取价格	4.5V to 28V Input, Synchronous PWM Buck Controllers for DDR Termination and Point-of-Load
MAX8554	MAXIM	获取价格	4.5V to 28V Input, Synchronous PWM Buck Controllers for DDR Termination and Point-of-Load
MAX8554	ADI	获取价格	4.5V至28V输入、同步PWM buck控制器，适合DDR端接和负载点应用
MAX8554EEE	MAXIM	获取价格	4.5V to 28V Input, Synchronous PWM Buck Controllers for DDR Termination and Point-of-Load
MAX8554EEE+	MAXIM	获取价格	暂无描述
MAX8554EEE+T	MAXIM	获取价格	Switching Controller, Voltage-mode, 550kHz Switching Freq-Max, BICMOS, PDSO16, 0.150 INCH,
MAX8554EEE-T	MAXIM	获取价格	暂无描述
MAX8555	MAXIM	获取价格	Low-Cost, High-Reliability, 0.5V to 3.3V ORing MOSFET Controllers
MAX8555\|MAX8555A	MAXIM	获取价格	Low-Cost. High-Reliability. 0.5V to 3.3V ORing MOSFET Controllers
MAX8555AETB	MAXIM	获取价格	Low-Cost, High-Reliability, 0.5V to 3.3V ORing MOSFET Controllers

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