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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear + Switching

Analog Devices Inc./Maxim Integrated MAX1765EUE+

Name: MAX1765EUE+
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX1765EUE+
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX1765EUE+

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Voltage Regulators - Linear + Switching

Package:: 16-TSSOP (0.173", 4.40mm Width) Exposed Pad

Datasheet:: MAX1765EUE+.pdf

Description:: IC REG DL BOOST/LNR SYNC 16TSSOP

Quantity:: RFQ Add To RFQ list

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Inventory:4,033

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Product details

Overview

MAX1765EUE+ from Analog Devices/Maxim Integrated is a high-efficiency, low-noise step-up DC-DC converter with an integrated 500mA linear regulator. The device is designed for battery-powered wireless and handheld products that need a regulated boost output plus a secondary low-noise rail from compact external components.

As part of the Maxim Integrated MAX1765 family, MAX1765EUE+ combines synchronous-rectified PWM boost conversion, up to 800mA output capability, a 1MHz operating frequency, low quiescent current, soft-start, current-limit adjustment, and a 16-pin TSSOP-EP package. For engineers reviewing the MAX1765EUE+ datasheet, MAX1765EUE+ pinout, MAX1765EUE+ application, or MAX1765EUE+ equivalent, this device is widely used in wireless handsets, PCS phones, palmtop computers, personal communicators, handheld instruments, and portable audio players.

Technical Context

In battery-powered wireless systems, MAX1765EUE+ operates as a synchronous boost converter that raises one-cell to three-cell battery inputs or a single lithium-ion cell into a regulated 2.5V to 5.5V output. Its synchronous-rectified topology improves conversion efficiency compared with diode-rectified boost designs, especially where battery runtime is a critical requirement.

The converter runs at 1MHz fixed frequency or can synchronize to an external clock, allowing designers to use small inductors and capacitors while controlling switching noise in communications equipment. At light load, the device transitions into a low-quiescent-current control scheme to reduce standby power, while forced-PWM mode supports constant-frequency operation for noise-sensitive systems.

MAX1765EUE+ is commonly used in portable RF products, handheld instruments, audio players, palmtop computers, and communication devices that require an efficient boost rail, a 500mA LDO rail, soft-start control, current-limit setting, and compact thermal packaging.

Key Specifications

Parameter	Value and Actual Design Meaning
Device Type	800mA low-noise step-up DC-DC converter with integrated 500mA LDO linear regulator.
Input Voltage Range	0.7V to 5.5V input range supports battery inputs from one to three cells or a single Li-ion cell.
Boost Output	Adjustable 2.5V to 5.5V boost output with up to 93% efficiency and up to 800mA output capability.
Switching Frequency	1MHz operation with synchronization option for controlled-noise power design.
LDO Regulator	500mA linear regulator with 2.85V fixed output or adjustable 1.25V to 5V operation.
Dropout Performance	Low 125mV dropout at 500mA supports efficient post-regulated output rails.
Control Features	Separate shutdown control for DC-DC converter and LDO, analog soft-start, and adjustable inductor current limit.
Package	MAX1765EUE+ uses a lead-free 16-pin TSSOP-EP package rated for -40°C to +85°C operation.

Pinout & Package

The MAX1765EUE+ pinout separates boost converter power pins, LDO regulator pins, feedback nodes, shutdown controls, soft-start/current-limit control, reference output, and exposed-pad grounding.

For PCB layout, the inductor, LX node, POUT/output capacitors, and ground return should be placed tightly to minimize EMI and ground bounce. The exposed pad should connect to a large ground plane because the TSSOP-EP package relies on thermal copper for power dissipation.

Pin / Function	PCB Design and Circuit Role
LX	Boost converter switching node connected to the inductor; keep short and away from sensitive traces.
POUT / OUT	Boost power output and regulated output sense path for the step-up converter.
FB	Boost feedback input used to set and regulate the main output voltage.
INL / OUTL	Input and output pins for the integrated linear regulator.
FBL	LDO feedback input for fixed or adjustable linear regulator operation.
ONA / ONB / ONL	Logic-control inputs for enabling the boost converter and linear regulator.
CLK/SEL	Mode selection or synchronization input for fixed-frequency and forced-PWM operation.
ISET	Sets inductor current limit and supports soft-start timing with external components.
REF	1.25V reference output used for feedback and current-limit networks.
GND / PGND / Exposed Pad	Signal ground, power ground, and thermal pad connections requiring careful low-impedance layout.

Key Features

Synchronous boost topology improves efficiency in battery-powered products.
1MHz operation supports small inductors and capacitors for compact handheld layouts.
Integrated 500mA LDO provides a secondary low-noise rail.
Low quiescent current and shutdown modes improve standby battery life.
External synchronization helps avoid sensitive frequency bands in communications systems.
Soft-start and adjustable current limit support controlled startup and component-size optimization.

Applications

Wireless Handsets

Handheld Instruments

Use Scenario: Used in battery-powered handset and RF communication platforms.

IC Role: MAX1765EUE+ generates a boosted system rail and a regulated LDO rail.

Use Value: Supports high efficiency, low noise, and compact power conversion for portable radios.

Use Scenario: Used in portable test equipment, field instruments, and compact measurement devices.

IC Role: The IC provides regulated rails from low-voltage battery inputs.

Use Value: Improves runtime while reducing external component size.

Palmtop Computers

Portable Audio Players

Use Scenario: Used in compact computing devices requiring multiple low-voltage rails.

IC Role: The boost converter supplies the main rail while the LDO supplies a clean secondary rail.

Use Value: Supports integrated power management in space-constrained PCBs.

Use Scenario: Used in battery-operated audio and consumer electronics.

IC Role: MAX1765EUE+ provides efficient conversion and a low-noise regulator rail.

Use Value: Helps preserve audio-system noise performance and battery life.

Equivalent & Alternatives

When evaluating a MAX1765EUE+ equivalent, engineers should compare boost output current, input startup range, LDO current, switching frequency, forced-PWM or pulse-skipping behavior, package thermal performance, and control-pin compatibility.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX1765EEE+	Same MAX1765 function in a 16-pin QSOP package instead of TSSOP-EP.	Used when the design can accept a different package and thermal profile.	Choose MAX1765EUE+ when the exposed-pad TSSOP package is needed for thermal performance.
TPS6109x boost converter family	Texas Instruments boost alternatives may provide different current capability, control behavior, and regulator integration.	Used in newer battery-powered boost designs with different rail or package requirements.	Compare LDO integration, output current, quiescent current, switching frequency, and layout before replacement.

Compared with MAX1765EEE+, MAX1765EUE+ is selected when the BOM requires the lead-free 16-pin TSSOP-EP package. MAX1765EUE+ vs TPS6109x selection depends on whether the design needs the MAX1765 integrated 500mA LDO, control-pin behavior, 1MHz operation, and existing PCB compatibility.

Quality

MAX1765EUE+ should be sourced as original Analog Devices/Maxim Integrated components through traceable supply channels. Quality checks may include package inspection, top-mark validation, exposed-pad condition review, solderability testing, and boost/LDO electrical verification.

Because the device uses high peak switch currents at 1MHz, production validation should include startup voltage, output regulation, current-limit behavior, soft-start timing, LDO dropout behavior, thermal rise, and PCB layout checks for EMI and ground bounce.

Availability

MAX1765EUE+ available at Aetrix Electronics and is suitable for battery-powered wireless, handheld, portable audio, and instrument designs requiring compact boost conversion with an integrated LDO rail.

Supply support may include volume procurement planning, scheduled delivery arrangements, traceable sourcing management, and long-term support for OEM and portable electronics manufacturing programs. Sample and NPI supply support, as well as urgent in-stock supply support, can also be arranged for prototype builds, pilot runs, and time-critical production needs.

For production builds, confirming package type, lead-free suffix, temperature grade, battery input range, output-current requirement, lifecycle status, and sourcing continuity helps improve procurement stability.

Manufacturer

Analog Devices is a global semiconductor manufacturer specializing in analog ICs, power management, mixed-signal products, data converters, RF solutions, sensors, and embedded signal-chain technologies for industrial, communication, automotive, healthcare, and consumer applications.

The MAX1765 product family is a portable-power step-up converter series combining high-efficiency boost conversion with an integrated linear regulator, supporting handheld, wireless, and battery-operated systems that require compact multi-rail power generation.

FAQ

What is MAX1765EUE+ used for?

MAX1765EUE+ is used for battery-powered wireless devices, handheld instruments, palmtop computers, portable audio players, and compact systems requiring a boost converter plus an LDO rail.

Where can I find the MAX1765EUE+ datasheet download?

The MAX1765EUE+ datasheet is available from Analog Devices and includes electrical characteristics, pin descriptions, mode operation, soft-start design, package information, and layout guidance.

What should be considered in MAX1765EUE+ pinout design?

Designers should keep LX and high-current boost paths short, connect the exposed pad to a large ground plane, separate signal feedback from switching nodes, and place output capacitors close to the IC.

Does MAX1765EUE+ include a linear regulator?

Yes. MAX1765EUE+ integrates a 500mA LDO linear regulator with fixed 2.85V or adjustable output operation.

What are common MAX1765EUE+ equivalent solutions?

Common alternatives include MAX1765EEE+ for a package change and other boost converter families selected according to current rating, LDO integration, quiescent current, and PCB compatibility.

MAX1765EUE+ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: -

Package/Case:: 16-TSSOP (0.173", 4.40mm Width) Exposed Pad

Packaging:: Tube

Product Status:: Active

Topology:: Step-Up (Boost) Synchronous (1), Linear (LDO) (1)

Number of Outputs:: 2

Frequency - Switching:: 1MHz

Voltage/Current - Output 1:: 2.5V ~ 5.5V, 800mA

Voltage/Current - Output 2:: 2.85V/Adj, 500mA

Voltage/Current - Output 3:: -

w/LED Driver:: No

w/Supervisor:: No

w/Sequencer:: No

Voltage - Supply:: 0.7V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-TSSOP-EP

MAX1765EUE+ FAQ

1.How can I place an order for MAX1765EUE+ through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX1765EUE+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MAX1765EUE+ reliable?

The price and inventory of MAX1765EUE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1765EUE+ is usually 5 days.

3.What payment methods are accepted for MAX1765EUE+?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1765EUE+ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX1765EUE+?

MAX1765EUE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX1765EUE+ order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MAX1765EUE+?

For technical support, including MAX1765EUE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1765EUE+ requirements.

6.How does Aetrix verify that MAX1765EUE+ is sourced from the original manufacturer or authorized distributors?

All MAX1765EUE+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX1765EUE+ meets industry standards.

7.What is the process for return or replacement of MAX1765EUE+?

All MAX1765EUE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1765EUE+, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MAX1765EUE+ part is unused and in its original packaging.

Return procedure for MAX1765EUE+:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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