Datasheet > MAX17620

MAX17620

更新时间： 2024-09-25 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
15页	890K
描述
4MHz、微型、600mA、同步降压型DC-DC转换器，带有集成MOSFET

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MAX17620 数据手册

MAX17620

4MHz, Miniature 600mA, Synchronous Step-Down

DC-DC Converter with Integrated MOSFETs

General Description

Beneﬁts and Features

● Minimizes External Components, Reducing Total

The MAX17620 is a high-frequency, high-efficiency

synchronous step-down DC-DC converter with integrated

MOSFETs that operates over a 2.7V to 5.5V input voltage

range. The device supports up to 600mA load current and

Cost

• Synchronous Operation for High Efﬁciency and

Reduced Cost

• Internal Compensation for Stable Operation at Any

Output Voltage

1.5V to 100% V output voltage. High-frequency operation

enables the use of small, low-cost inductors and capacitors.

• All-Ceramic Capacitor Solution

• 4MHz Operation

The device features selectable PWM/skip mode of

operation at light loads and operates at a 4MHz fixed-

frequency in PWM mode. Skip mode improves system

efficiency at light loads, while PWM mode maintains a

constant switching frequency over the entire load.

In skip mode, the device draws only 40µA of quiescent

current from the supply input. In shutdown mode, the current

consumption is reduced to 0.1µA.

The device also features a soft-start feature to reduce

the inrush current during startup, and also incorporates an

enable (EN) pin to turn on/off the device. An open-drain

PGOOD pin provides power-good signal to the system

upon achieving successful regulation of the output voltage.

• Only 5 External Components Required

• Total Solution Size is 12mm (Sum of the

Components Area)

● Reduces Number of DC-DC Regulators to Stock

• Wide 2.7V to 5.5V Input Voltage Range

• Adjustable 1.5V to 100% V Output Voltage Range

• Delivers Up to 600mA Load Current

• 100% Duty-Cycle Operation

• +1%/-0.75% Reference Voltage Accuracy

• Available in a 2mm x 2mm TDFN Package

● Reduces Power Dissipation

• Peak Efﬁciency 91%

• Skip Mode for High Light-Load Efﬁciency

• Shutdown Current = 0.1µA

● Operates Reliably

The MAX17620 is available in an 8-pin, 2mm x 2mm

TDFN package and operates over the -40°C to +125°C

temperature range.

Applications

• Peak Current-Limit Protection

• Soft-Start Reduces Inrush Current During Startup

• Built-In Output-Voltage Monitoring

(Open-Drain PGOOD Pin)

● Point-of-Load Power Supply

● Standard 5V Rail Supplies

● Battery-Powered Instruments

● Distributed Power Systems

• -40°C to +125°C Operation

Ordering Information appears at end of data sheet.

Typical Application Circuit—1.8V, 600mA Step-Down Regulator

1µH

2.7V TO 5.5V

V_OUT

1.8V/600mA

C_IN

2.2µF

MAX17620

C_OUT

10µF

24kΩ

GND

V_OUT

PGOOD

19.1kΩ

MODE

C_IN: 2.2µF/10V/0603/X7R,GRM188R71A225KE15D, MURATA

L1: 1μH, 60mΩ, MAKK2016H1ROM, TAIYO-YUDEN

C_OUT: 10μF/6.3V/0805/X7R, GRM21BR70J106KE76K, MURATA

19-7543; Rev 3; 7/16

12 3 4 5 6 7...15

中文翻译

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与MAX17620相关器件

型号	品牌	获取价格	描述	数据表
MAX17620ATA+T	MAXIM	获取价格	Switching Regulator, Current-mode, 1.8A, 4160kHz Switching Freq-Max, CMOS, PDSO8, 2 X 2 MM
MAX17623	MAXIM	获取价格	2.9V to 5.5V,1A, Synchronous Step-Down Converter with Integrated MOSFETs
MAX17623	ADI	获取价格	集成了MOSFET的2.9V至5.5V、1A、同步降压转换器
MAX17623ATA	MAXIM	获取价格	2.9V to 5.5V,1A, Synchronous Step-Down Converter with Integrated MOSFETs
MAX17623EVKIT	MAXIM	获取价格	2.9V to 5.5V Input-Voltage Range
MAX17624	MAXIM	获取价格	2.9V to 5.5V,1A, Synchronous Step-Down Converter with Integrated MOSFETs
MAX17624	ADI	获取价格	2.9V to 5.5V,1A, Synchronous Step-Down Converter with Integrated MOSFETs
MAX17624ATA	MAXIM	获取价格	2.9V to 5.5V,1A, Synchronous Step-Down Converter with Integrated MOSFETs
MAX17625	ADI	获取价格	集成了MOSFET的2.7V至5.5V、700mA、同步降压转换器
MAX17626	ADI	获取价格	集成了MOSFET的2.7V至5.5V、700mA、同步降压转换器

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