Datasheet > MAX17521

MAX17521

更新时间： 2024-11-16 14:58:23

品牌	Logo	应用领域
亚德诺 - ADI		DC-DC转换器
页数	文件大小	规格书
22页	643K
描述
60V、1A、双路输出、高效率、同步、降压型DC-DC转换器

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中文翻译

获取价格

数据手册

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MAX17521 数据手册

EVALUATION KIT AVAILABLE

MAX17521

60V, 1A, Dual-Output, High-Efﬁciency,

Synchronous Step-Down DC-DC Converter

General Description

Beneﬁts and Features

● Reduces External Components and Total Cost

• No Schottky—Synchronous Operation

• All-Ceramic Capacitors, Compact Layout

The MAX17521 dual-output, high-efficiency, high-voltage,

synchronous step-down DC-DC converter with integrated

MOSFETs operates over a 4.5V to 60V input. The converter

can deliver up to 1A at each output. Each output is

programmable from 0.9V to 92%V . The feedback voltage

regulation accuracy over -40°C to +125°C is ±1.7%.

● Reduces Number of DC-DC Regulators to Stock

• Wide 4.5V to 60V Input

• Each Output Adjustable From 0.9V to 92%V

• Pin-Selectable 560kHz or 300kHz Switching

The MAX17521 uses peak-current-mode control. Each

output can be operated in the pulse-width modulation

(PWM) or pulse-frequency modulation (PFM) control

schemes.

Frequency

• Independent Input Voltage Pin for Each Output

● Reduces Power Dissipation

• Peak Efﬁciency > 90%

• PFM Mode Enables Enhanced Light-Load Efﬁ-

ciency

The MAX17521 is available in a 24-pin (4mm x 5mm)

TQFN package. Simulation models are available.

• 1μA Shutdown Current

Applications

● Industrial Control Power Supplies

● CPU, DSP, or FPGA Power

● Operates Reliably in Adverse Industrial Environments

• Hiccup Mode Overload Protection

● Distributed Supply Regulation

● General-Purpose Point of Load

• Adjustable Soft-Start Pin for Each Output

• Built-In Output Voltage Monitoring with RESET for

Each Output

• Adjustable EN/UVLO Threshold for Each Output

• Monotonic Startup Into Prebiased Load

• Overtemperature Protection

Ordering Information appears at end of data sheet.

• High Industrial -40°C to +125°C Ambient Operat-

ing Temperature Range/-40°C to +150°C Junction

Temperature Range

Typical Application Circuit

7.5V–60V

2.2μF

EN/UVLO1

PGND1

PGND2

EN/UVLO2

IN2

IN1

MODE1

MODE2

C16

CC2

CC1

1μF

SGND2

SGND1

RESET1

LX1

MAX17521

RESET2

22μH

15μH

OUT1

OUT2

5V, 1A

3.3V, 1A

LX2

22μF

10μF

54.9kΩ

82.5kΩ

SS1

COMP1 FSEL SYNC COMP2

SS2

FB2

FB1

3300pF

R10

20.5kΩ

14kΩ

19.1kΩ

18.2kΩ

C12

22pF

C10

33pF

C11

2700pF

L1 = XAL5050-223, 5.3 x 5.5mm

L2 = XAL4040-153, 4 x 4mm

= 560kHz

19-7479; Rev 2; 6/17

12 3 4 5 6 7...22

中文翻译

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与MAX17521相关器件

型号	品牌	获取价格	描述	数据表
MAX17521ATG+	MAXIM	获取价格	Dual Switching Controller, Current-mode, 1.85A, 600kHz Switching Freq-Max, BICMOS, TQFN-24
MAX17523	MAXIM	获取价格	4.5V to 36V Operating Voltage Range
MAX17523	ADI	获取价格	具有OV、UV、反向电压保护的4.2V至36V、1A限流器
MAX17523A	ADI	获取价格	4.2V to 36V, 1A Current Limiter with OV, UV, Reverse Voltage Protection
MAX17523EVKIT	MAXIM	获取价格	4.5V to 36V Operating Voltage Range
MAX17524	MAXIM	获取价格	4.5V to 60V, 3A, Dual-Output, High-Efficiency,Synchronous Step-Down DC-DC Converter
MAX17524	ADI	获取价格	4.5V至60V、3A、双路输出、高效同步整流降压型DC-DC转换器
MAX17524ATJ+	MAXIM	获取价格	4.5V to 60V, 3A, Dual-Output, High-Efficiency,Synchronous Step-Down DC-DC Converter
MAX17525	MAXIM	获取价格	Robust, High-Power Protection Reduces System
MAX17525	ADI	获取价格	高精度、可调节功率抑制器

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