Datasheet > MAX17673A

MAX17673A

更新时间： 2023-12-20 18:44:42

品牌	Logo	应用领域
亚德诺 - ADI		调节器
页数	文件大小	规格书
27页	1292K
描述
集成4.5V至60V、同步、1.5A、HV降压调节器和两个2.7V至5.5V、1A降压调节器

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数据手册

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MAX17673A 数据手册

EVALUATION KIT AVAILABLE

Click here for production status of speciﬁc part numbers.

MAX17673/MAX17673A Integrated 4.5V to 60V Synchronous 1.5A HV Buck

and Dual 2.7V to 5.5V, 1A Buck Regulators

General Description

Beneﬁts and Features

MAX17673/MAX17673A power management integrated

circuits (PMIC) integrate a 60V high voltage (HV), high

efficiency synchronous DC-DC buck regulator and two

5.5V high efficiency synchronous DC-DC buck regulators.

All three regulators offer integrated power MOSFETs.

● Reduces External Components and Total Cost

• Synchronous Operation for High Eﬃciency

• Internal Compensation for a Wide Output Voltage

Range

• All-Ceramic Capacitors,Compact Layout

● Integrates Three DC-DC Regulators

• Wide 4.5V to 60V Input Voltage Range for the HV

Regulator. 2.7V to 5.5V Input Range for LV

Regulators.

The HV regulator operates from a 4.5V to 60V input volt-

age range and the LV regulators operate from a 2.7V to

5.5V input voltage range. The HV regulator supports load

currents up to 1.5A, and can regulate output voltages from

0.9V to 5.5V. The LV regulators support load currents up to

1A, and can regulate output voltages from 0.75V to 4.8V.

• Adjustable 0.9V to 5.5V Output for the HV Regula-

tor and 0.75V up to 4.8V Output for LV Regulators

• Delivers up to 1.5A Load Current for the HV Regu-

lator and 1A Load Current for LV Regulators

• Adjustable Switching Frequency: 250KHz to

800KHz for HV Regulator and 1MHz to 4MHz for

LV Regulators

• Programmable LV / HV Switching Frequency Ratio

(2, 3, 4, 5, 6, 7, 8)

• EN/UVLO for HV buck and EN for LV regulators

MAX17673/MAX17673A offer independent peak cur-

rent mode control, hiccup mode overcurrent protection,

ENABLE input and Power OK signal in the three regu-

lators. The switching frequency is adjustable between

1MHz and 4MHz in the LV regulators, and the HV regula-

tor can be programmed to run at a fractional switching

frequency of the LV regulators. The HV regulator offers

an adjustable soft-start function, while the LV regulators

present internally fixed soft-start. Users can choose to

operate the devices in either pulse frequency modulation

(PFM) or forced pulse width modulation (PWM) scheme.

The MAX17673A offers external clock synchronization.

● Reduces Power Dissipation

• 550μA in PFM and 10.2mA in PWM Mode

Quiescent Current

• Peak Eﬃciency > 92%

• Auxiliary Bootstrap LDO for Improved Eﬃciency

• PFM Mode for High Light-Load Eﬃciency

• 7.4μA Shutdown Current

The devices are available in a 28-pin, 5mm x 5mm TQFN

package and operates over a -40°C to +125°C tempera-

ture range.

● Operates Reliably in Adverse Industrial Environments

• Peak-Current Limit Protection

Applications

• Hiccup Mode Overload Protection

• Soft-Start Reduces Inrush Current During Startup

(Adjustable for HV Regulator)

• Built-In Output-Voltage Monitoring with POKH,

POKA, and POKB

● Industrial Control Power Supplies

● FPGA/CPLD Power Supplies

● Distributed Supply Regulation

● Base Station Power Supplies

● High Voltage Single Board Systems

• Monotonic Startup into Prebiased Load

• Overtemperature Protection

• Dynamic Mode Change for On-the-Fly Shift

Between PFM and PWM Mode

• -40°C to +125°C Operating Temperature Range

• Complies with CISPR22(EN55022) Class B

Conducted and Radiated Emissions

Ordering Information appears at end of data sheet.

19-100403; Rev 2; 11/19

12 3 4 5 6 7...27

中文翻译

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与MAX17673A相关器件

型号	品牌	获取价格	描述	数据表
MAX17673AATI	MAXIM	获取价格	Integrated 4.5V to 60V Synchronous 1.5A HV Buck and Dual 2.7V to 5.5V, 1A Buck Regulators
MAX17673AATI+	MAXIM	获取价格	Switching Regulator/Controller,
MAX17673ATI	MAXIM	获取价格	Integrated 4.5V to 60V Synchronous 1.5A HV Buck and Dual 2.7V to 5.5V, 1A Buck Regulators
MAX17673ATI+	MAXIM	获取价格	Switching Regulator,
MAX17681	MAXIM	获取价格	4.5V to 42V Input, High-Efficiency
MAX17681	ADI	获取价格	4.5V至42V输入、高效、Iso-Buck DC-DC转换器
MAX17681_18	MAXIM	获取价格	4.5V to 42V Input, High-Efficiency
MAX17681AATB+	MAXIM	获取价格	4.5V to 42V Input, High-Efficiency
MAX17681ATB+	MAXIM	获取价格	4.5V to 42V Input, High-Efficiency
MAX17681ATB+T	MAXIM	获取价格	IC REG BUCK ISO ADJ SYNC 10TDFN

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