Datasheet > MAX8529_07

MAX8529_07

更新时间： 2024-11-27 04:41:39

品牌	Logo	应用领域
美信 - MAXIM		控制器
页数	文件大小	规格书
20页	368K
描述
1.5MHz Dual 180∑ Out-of-Phase PWM Step-Down Controller with POR

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MAX8529_07 数据手册

19-2696; Rev 1; 4/07

1.5MHz Dual 180° Out-of-Phase

PWM Step-Down Controller with POR

General Description

Features

The MAX8529 dual, synchronized, step-down controller

generates two outputs from input supplies ranging from

4.75V to 23V. Each output is adjustable from sub-1V

to 18V. Input voltage ripple and total RMS input ripple

current are reduced by synchronized 180-degree out-of-

phase operation.

♦ Low Output Noise in DSL Band

♦ Ceramic Input/Output Capacitors

♦ Step-Down or Step-Up/Step-Down Operation

♦ Four Output, 90-Degree Out-of-Phase Operation

(Using Two MAX8529s)

The switching frequency is adjustable from 600kHz to

1.5MHz with an external resistor. Alternatively, the con-

troller can be synchronized to an external clock gener-

ated to another MAX8529 or a system clock. One

MAX8529 can be set to generate an in-phase, or 90-

degree out-of-phase, clock signal for synchronization

with additional controllers. This allows two controllers to

operate either as an interleaved two- or four-phase sys-

tem with each output shifted by 90 degrees. These

devices also feature soft-start and soft-stop.

♦ Foldback Current Limit

♦ 4.75V to 23V Input Supply Range

♦ 0 to 18V Output Voltage Range (Up to 6A)

♦ > 90% Efficiency

♦ Fixed-Frequency PWM Operation

♦ Adjustable 600kHz to 1.5MHz Switching

Frequency

The MAX8529 eliminates the need for current-sense

resistors by utilizing the low-side MOSFET’s on-resis-

tance as a current-sense element. This protects the

DC-to-DC components from damage during output

overload conditions or when output short circuit faults

without requiring a current-sense resistor. Adjustable

foldback current limit reduces power dissipation during

short-circuit conditions. The MAX8529 includes a

power-on reset output to signal the system when both

outputs reach regulation.

♦ External SYNC Input

♦ Clock Output for Master/Slave Synchronization

♦ Soft-Start and Soft-Stop

♦ RST Output with 140ms Minimum Delay

♦ Lossless Current Limit (No Sense Resistor)

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

The MAX8529 is available in a 24-pin QSOP package. An

evaluation kit is available to speed designs.

MAX8529EEG

-40°C to +85°C

24 QSOP

Pin Configuration

Applications

xDSL Modems and Routers

DSP, ASIC, and FPGA Power Supplies

Set-Top Boxes

TOP VIEW

COMP2

FB2

24 EN

23 DH2

Broadband Routers

ILIM2

OSC

V+

LX2

21 BST2

20 DL2

REF

MAX8529

19 V

GND

CKO

SYNC

18 PGND

17 DL1

16 BST1

ILIM1 10

FB1 11

LX1

DH1

COMP1 12

13 RST

QSOP

________________________________________________________________ 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.

12 3 4 5 6 7...20

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与MAX8529_07相关器件

型号	品牌	获取价格	描述	数据表
MAX8529EEG	MAXIM	获取价格	1.5MHz Dual 180∑ Out-of-Phase PWM Step-Down C
MAX8529EEG+	MAXIM	获取价格	Dual Switching Controller, Voltage-mode, 0.05A, 1500kHz Switching Freq-Max, BICMOS, PDSO24
MAX8529EEG+T	MAXIM	获取价格	Dual Switching Controller, Voltage-mode, 0.05A, 1500kHz Switching Freq-Max, BICMOS, PDSO24
MAX8529EEG-T	MAXIM	获取价格	Dual Switching Controller, Voltage-mode, 0.05A, 1500kHz Switching Freq-Max, BICMOS, PDSO24
MAX8529EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX8529
MAX852C/D	MAXIM	获取价格	Low-Noise, Regulated, Negative Charge-Pump Power Supplies for GaAsFET Bias
MAX852CSA	ROCHESTER	获取价格	SWITCHED CAPACITOR REGULATOR, 100kHz SWITCHING FREQ-MAX, PDSO8, 0.150 INCH, PLASTIC, SOIC-
MAX852CSA	MAXIM	获取价格	Switched Capacitor Regulator, 0.005A, 100kHz Switching Freq-Max, CMOS, PDSO8, 0.150 INCH,
MAX852CSA+	MAXIM	获取价格	Switched Capacitor Regulator, 100kHz Switching Freq-Max, CMOS, PDSO8, 0.150 INCH, PLASTIC,
MAX852CSA-T	MAXIM	获取价格	Switched Capacitor Regulator, 100kHz Switching Freq-Max, CMOS, PDSO8, 0.150 INCH, PLASTIC,

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