Datasheet > MAX1709

MAX1709

更新时间： 2024-11-06 14:57:55

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
13页	312K
描述
4A、低噪声、高频、升压型DC-DC转换器

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中文翻译

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数据手册

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MAX1709 数据手册

EVALUATION KIT AVAILABLE

4A, Low-Noise, High-Frequency,

Step-Up DC-DC Converter

MAX1709

General Description

Benefits and Features

The MAX1709 sets a new standard of space savings

for high-power, step-up DC-DC conversion. It delivers

up to 20W at a fixed (3.3V or 5V) or adjustable (2.5V to

5.5V) output, using an on-chip power MOSFET from a

+0.7V to +5V supply.

• Integration Reduces External Component Count to

Save Space

• On-Chip 10A Power MOSFET

• 5V, 4A Output from a 3.3V Input

• Fixed 3.3V or 5V Output Voltage or

Adjustable (2.5V to 5.5V)

Fixed-frequency PWM operation ensures that the

switching noise spectrum is constrained to the 600kHz

fundamental and its harmonics, allowing easy postfilter-

ing for noise reduction. External clock synchronization

capability allows for even tighter noise spectrum con-

trol. Quiescent power consumption is less than 1mW to

extend operating time in battery-powered systems.

• Input Voltage Range Down to 0.7V

• Constant Frequency Reduces Post-Filtering

• Low-Noise, Constant-Frequency Operation

(600kHz)

• Synchronizable Switching Frequency

(350kHz to 1000kHz)

Two control inputs (ONA, ONB) allow simple push-on,

push-off control through a single momentary pushbut-

ton switch, as well as conventional on/off logic control.

The MAX1709 also features programmable soft-start

and current limit for design flexibility and optimum per-

formance with batteries.

• Lower Power Consumption Extends Battery Life

• 1mW Quiescent Power

Ordering Information

The MAX1709 is supplied in both a high-power TSSOP

package, which allows a 10A

switch current and a

RMS

PART

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

16 Narrow SO

28 TSSOP-EP*

4A output, and a narrow SO package, which supplies a

2.4A output with a switch rated at 6A . Although the

MAX1709ESE

MAX1709EUI+

RMS

narrow SO device has a lower RMS switch rating, it has

the same peak switch current rating as the TSSOP

device, and so can supply 4A loads intermittently. If

loads of 2A or less are required, refer to the MAX1708.

+Denotes a lead(Pb)-free/RoHS-compliant package.

*EP = Exposed pad.

Applications

Pin Configuration

Routers, Servers, Workstations, Card Racks

Local 2.5V to 3.3V or 5V Conversion

Local 3.3V to 5V Conversion

TOP VIEW

ONA

28 ONB

27 CLK

26 3.3/5

25 NC

3.6V or 5V RF PAs in Communications Handsets

MAX1709

Typical Operating Circuit

24 NC

INPUT

1V TO 5V

23 PGND

22 PGND

21 PGND

20 PGND

19 PGND

18 PGND

17 NC

1µH

OUTPUT

OFF ON

3.3V, 5V,

OR ADJ

ONA

CLK

NC 10

GND 11

MAX1709

UP TO 4A

SYNC

GND

OUT

INTERNAL

SS/ILM 12

REF 13

SS/LIM

REF

16 FB

GND 14

15 OUT

TSSOP-EP

19-1724; Rev 3; 2/15

12 3 4 5 6 7...13

中文翻译

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与MAX1709相关器件

型号	品牌	获取价格	描述	数据表
MAX1709_07	MAXIM	获取价格	4A, Low-Noise, High-Frequency, Step-Up DC-DC Converter
MAX17094	MAXIM	获取价格	Digitally Programmable Op-Amp Output Voltage
MAX17094EVKIT	MAXIM	获取价格	Digitally Programmable Op-Amp Output Voltage
MAX17094EVKIT+	MAXIM	获取价格	Digitally Programmable Op-Amp Output Voltage
MAX1709ESE	MAXIM	获取价格	4A, Low-Noise, High-Frequency, Step-Up DC-DC Converter
MAX1709ESE+	MAXIM	获取价格	Switching Regulator, Current-mode, 700kHz Switching Freq-Max, PDSO16, 0.150 INCH, MS-012AC
MAX1709ESE+T	MAXIM	获取价格	Switching Regulator, Current-mode, 1000kHz Switching Freq-Max, PDSO16, 0.150 INCH, MS-012C
MAX1709EUI	MAXIM	获取价格	Switching Regulator/Controller, Current-mode, 700kHz Switching Freq-Max, PDSO28
MAX1709EUI+	MAXIM	获取价格	4A, Low-Noise, High-Frequency, Step-Up DC-DC Converter
MAX1709EUI+T	MAXIM	获取价格	Switching Regulator, Current-mode, 700kHz Switching Freq-Max, PDSO28, 4.40 MM, ROHS COMPLI

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