Datasheet > MAX17505

MAX17505

更新时间： 2024-11-16 14:57:35

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
26页	1675K
描述
4.5V-60V、1.7A、高效同步降压型DC-DC转换器，内部补偿

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中文翻译

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MAX17505 数据手册

EVALUATION KIT AVAILABLE

MAX17505

4.5V-60V, 1.7A, High-Efficiency,

Synchronous Step-Down DC-DC Converter

With Internal Compensation

General Description

The MAX17505/MAX17505S high-efficiency, high-

voltage, synchronously rectified step-down converter with

dual integrated MOSFETs operates over a 4.5V to 60V

Beneﬁts and Features

●

EliminatesꢀExternalꢀComponentsꢀandꢀReducesꢀTotalꢀ

Cost

• NoꢀSchottky-SynchronousꢀOperationꢀforꢀHighꢀ

EfﬁciencyꢀandꢀReducedꢀCost

input. It delivers up to 1.7A and 0.9V to 90%V output

voltage. Built-in compensation across the output voltage

range eliminates the need for external components. The

feedback (FB) regulation accuracy over -40NC to +125NC

is ±1.1%. The device is available in a compact (4mm x

4mm) TQFN lead(Pb)-free package with an exposed pad.

Simulation models are available.

• Internal Compensation for Stable Operation at Any

Output Voltage

• All-Ceramic Capacitor Solution: Ultra-Compact

Layout with as Few as Eight External Components

ReducesꢀNumberꢀofꢀDC-DCꢀRegulatorsꢀtoꢀStock

• Wideꢀ4.5Vꢀtoꢀ60VꢀInputꢀVoltageꢀRange

●

• 0.9V to 90%V Output Voltage

The device features a peak-current-mode control

architecture with a MODE feature that can be used to

operate the device in pulse-width modulation (PWM),

pulse-frequency modulation (PFM), or discontinuous-

conduction mode (DCM) control schemes. PWM operation

provides constant frequency operation at all loads, and is

useful in applications sensitive to switching frequency.

PFM operation disables negative inductor current and

additionally skips pulses at light loads for high efficiency.

DCM features constant frequency operation down to

lighter loads than PFM mode, by not skipping pulses but

only disabling negative inductor current at light loads.

DCM operation offers efficiency performance that lies

between PWM and PFM modes. The MAX17505S offers

a lower minimum on-time that allows for higher switching

frequencies and a smaller solution size.

• Delivers Up to 1.7A Over Temperature

• 100kHzꢀtoꢀ2.2MHzꢀAdjustableꢀFrequencyꢀwithꢀ

External Synchronization

• MAX17505SꢀAllowsꢀHigherꢀFrequencyꢀOfꢀOperation

• Available in a 20-Pin, 4mm x 4mm TQFN Package

ReducesꢀPowerꢀDissipation

●

• PeakꢀEfﬁciencyꢀ>ꢀ90%

• PFMꢀandꢀDCMꢀModesꢀforꢀHighꢀLight-LoadꢀEfﬁciency

• Shutdown Current = 2.8FA (typ)

OperatesꢀReliablyꢀ

• Hiccup-ModeꢀCurrentꢀLimitꢀandꢀAutoretryꢀStartup

• Built-In Output-Voltage Monitoring (Open-Drain

RESET Pin)

• Resistor-ProgrammableꢀEN/UVLOꢀThreshold

• AdjustableꢀSoft-StartꢀandꢀPrebiasedꢀPower-Up

• HighꢀIndustrialꢀ-40°Cꢀtoꢀ+125°CꢀAmbientꢀOperatingꢀ

TemperatureꢀRange/-40°Cꢀtoꢀ+150°CꢀJunctionꢀ

TemperatureꢀRange

A programmable soft-start feature allows users to reduce

input inrush current. The device also incorporates an

output enable/undervoltage lockout pin (EN/UVLO) that

allows the user to turn on the part at the desired input-

voltage level. An open-drain RESET pin provides a

delayed power-good signal to the system upon achieving

successful regulation of the output voltage.

Applications

●ꢀ IndustrialꢀPowerꢀSupplies

Ordering Information appears at end of data sheet.

●ꢀ DistributedꢀSupplyꢀRegulation

●ꢀ BaseꢀStationꢀPowerꢀSupplies

●ꢀ WallꢀTransformerꢀRegulation

●ꢀ High-VoltageꢀSingle-BoardꢀSystems

●ꢀ General-PurposeꢀPoint-of-Load

19-6907; Rev 2; 5/17

12 3 4 5 6 7...26

中文翻译

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与MAX17505相关器件

型号	品牌	获取价格	描述	数据表
MAX17505ATP+	MAXIM	获取价格	Switching Regulator, Current-mode, 3.25A, 2450kHz Switching Freq-Max, BICMOS, TQFN-20
MAX17505ATP+T	MAXIM	获取价格	IC REG BUCK ADJ 1.7A SYNC 20TQFN
MAX17506	ADI	获取价格	4.5V–60V、5A、高效同步降压型DC-DC转换器，带内部补偿
MAX17509	ADI	获取价格	4.5V–16V、双路3A输出、高效、同步降压型DC-DC转换器，带电阻编程功能
MAX17509ATJ+	MAXIM	获取价格	Dual Switching Controller, 2200kHz Switching Freq-Max, BICMOS, 5 X 5 MM, ROHS COMPLIANT, T
MAX17509ATJ+T	MAXIM	获取价格	IC REG BUCK ADJ 3A DL 32TQFN
MAX17510	ADI	获取价格	低电压、DDR线性稳压器
MAX17510ATB+T	MAXIM	获取价格	Terminator Support Circuit, BICMOS, PDSO10, 3 X 3 MM, ROHS COMPLIANT, TDFN-10
MAX17511	MAXIM	获取价格	Dual-Output, 3-/2-/1-Phase 2-/1-Phase Quick-PWM Controllers for VR12/IMVP7
MAX17511C	MAXIM	获取价格	Dual-Output, 3-/2-/1-Phase 2-/1-Phase Quick-PWM Controllers for VR12/IMVP7

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