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Analog Devices Inc./Maxim Integrated MAX1763EUE+
- Part No.:
- MAX1763EUE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MAX1763EUE+.pdf
- Description:
- IC REG BOOST ADJ/2.5V 2A 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:531
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Product details
Overview
MAX1763EUE+ from Maxim Integrated is a 1.5A, synchronous-rectified, 1MHz step-up DC-DC converter in a 16-pin TSSOP-EP package with exposed thermal pad. It delivers fixed 3.3V or adjustable 2.5V–5.5V output from 0.7V–5.5V input (e.g., single Li+, 1–3 NiMH/alkaline cells), achieves up to 94% efficiency, maintains 110µA no-load quiescent current in low-power mode, and supports forced-PWM or external clock synchronization for RF-sensitive wireless handsets.
For engineers reviewing the MAX1763EUE+ datasheet, MAX1763EUE+ pinout, MAX1763EUE+ application, or MAX1763EUE+ equivalent, this page provides verified technical context, validated pin functions, confirmed operating modes (Idle Mode™ vs. forced-PWM), real-world load-current limits (2.5A N-channel switch limit), and precise thermal performance data for high-power portable designs.
Technical Context
The MAX1763EUE+ integrates an N-channel MOSFET switch (0.13Ω typical on-resistance) and P-channel synchronous rectifier (0.25Ω typical on-resistance) in a fixed-frequency PWM boost topology. Its Idle Mode™ dynamically transitions between pulse-frequency modulation at light loads (<25% full load) and 1MHz constant-frequency PWM at medium/heavy loads-enabling both ultra-low quiescent current (110µA) and stable noise spectrum control.
It features dual-mode operation selected via CLK/SEL: logic-low enables auto-optimizing Idle Mode™; logic-high forces constant-frequency PWM for EMI-sensitive applications; external clock input (500kHz–1.2MHz) allows frequency synchronization to avoid interference bands. The on-chip 1.25V reference (±1.6% tolerance) and 1.245V FB setpoint enable precise output regulation across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.7V to 5.5V - supports single-cell Li+ (2.7V min), 1–3 NiMH/alkaline, and operates down to 0.7V after startup. |
| Output Voltage | Fixed 3.3V (FB grounded) or adjustable 2.5V–5.5V - regulated to ±1.5% over load/temperature using 1.245V FB setpoint. |
| Switching Frequency | 1MHz nominal (0.75–1.25MHz over temp) - enables use of small 1.5µH inductor and low-ESR ceramic capacitors. |
| Peak Switch Current Limit | 2.5A typical (2.0–3.4A min–max) - sets maximum inductor peak current; programmable via ISET voltage divider. |
| Quiescent Supply Current | 110µA typical in low-power mode - extends battery life in standby; drops to 1µA in shutdown (ONA=0, ONB=1). |
| Thermal Performance | 1.5W continuous power dissipation (TSSOP-EP) - junction-to-case θJC = 53°C/W with exposed pad soldered to ground plane. |
| Startup Input Voltage | 1.1V guaranteed (0.9–1.1V typical) - enables reliable boot from deeply discharged batteries. |
Pinout & Package
MAX1763EUE+ uses a 16-pin TSSOP-EP package with exposed thermal pad (EP) requiring connection to PCB ground plane for thermal management. Pin numbering follows standard TSSOP top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ONA) | On Control Input | Active-high enable; tied to OUT for normal operation; hysteresis ≈0.15×VOUT. |
| 2 (ISET) | Current Limit & Soft-Start Control | Voltage-controlled peak inductor current (ILIM = 2.5 × VISET/1.25 A); capacitor to GND adds soft-start. |
| 3 (REF) | 1.25V Reference Bypass | Internal precision reference; requires 0.22µF ceramic cap within 5mm for stability and noise immunity. |
| 4, 8, 16 (GND, AO, ONB) | Ground / Open-Drain Output / Off Control | GND is signal ground; AO is open-drain gain-block output; ONB is active-low disable (ONB=1 + ONA=0 = OFF). |
| 5 (FB) | Feedback Input | 1.245V regulation setpoint; connects to resistive divider (OUT–GND) for adjustable output or to GND for fixed 3.3V. |
| 6 (OUT) | IC Power Supply | Supplies internal circuitry from output rail; bypassed with 1.0µF ceramic cap and series 4.7Ω resistor to POUT. |
| 7 (AIN) | Gain-Block Input | Transconductance amplifier input (938mV threshold); disables gain block when connected to OUT. |
| 9 (CLK/SEL) | Mode Selection & Clock Input | Low = Idle Mode™; High = forced-PWM; external clock = synchronized PWM (500kHz–1.2MHz). |
| 10,12 (PGND) | Power Ground | Source node of N-channel switch; must be short-traced and joined near device for low-impedance return path. |
| 11,14 (LX) | Inductor Switch Node | Connects to inductor; high di/dt node requiring tight layout; shared between two pins for current sharing. |
| 13,15 (POUT) | Power Output | Source of internal P-channel synchronous rectifier; connects to output filter capacitor and load. |
| EP | Exposed Thermal Pad | Must be soldered to large copper ground plane to achieve 1.5W power dissipation and 53°C/W θJC. |
Key Features
| Feature | Design Value |
|---|---|
| Idle Mode™ Efficiency Optimization | Automatically switches between PFM (light load) and 1MHz PWM (medium/heavy load) to maintain ≥85% efficiency from 1mA to 1.5A output. |
| Synchronous Rectification | Integrated 0.25Ω P-channel rectifier improves efficiency by ~5% vs. Schottky diode solutions; reduces heat in compact handheld layouts. |
| Low-Noise Forced-PWM Mode | Constant 1MHz switching with controllable duty cycle eliminates variable-frequency noise; harmonics fall in predictable bands for easier EMI filtering. |
| External Clock Synchronization | Accepts 500kHz–1.2MHz external clock on CLK/SEL to shift switching spectrum away from sensitive RF bands (e.g., GSM, Bluetooth). |
| Programmable Current Limit & Soft-Start | ISET pin allows precise adjustment of peak switch current (2.0–3.4A) and addition of RC soft-start to limit inrush and reduce output overshoot. |
| Integrated Gain Block | 10mS transconductance amplifier with 0.938V internal reference enables external linear regulator or low-battery comparator without extra ICs. |
Applications
| Digital Cordless Phones | Wireless Handsets |
|---|---|
|
Use Scenario: Powering RF front-end and baseband ICs from single Li+ cell in compact DECT handsets. IC Role / Device Role / Timing Role: Primary step-up regulator delivering stable 3.3V/5V to transceiver and MCU; synchronizes switching to avoid 1.8GHz/2.4GHz ISM band interference. Use Value: 94% efficiency at 1.3A extends talk time; 110µA quiescent current preserves standby battery life; TSSOP-EP package meets thermal constraints in sealed plastic housing. |
Use Scenario: Supplying 3.3V to GPS receiver, Bluetooth module, and display driver in handheld asset trackers. IC Role / Device Role / Timing Role: Boost converter with programmable soft-start prevents brownout during cold start from partially discharged battery; forced-PWM mode ensures clean supply for sensitive GNSS LNA. Use Value: Guaranteed 1.1V startup enables operation down to 2.8V battery; 1.5W TSSOP-EP package sustains 1.5A continuous output in 60°C ambient without derating. |
| Palmtop Computers | Hand-Held Instruments |
|
Use Scenario: Generating 5V rail for USB peripheral interface and SD card slot from 3.6V main battery in ruggedized PDAs. IC Role / Device Role / Timing Role: Adjustable-output boost converter (2.5V–5.5V) with FB feedback; external Schottky diode added for >4V output compliance per datasheet Note 1. Use Value: 2.5A switch current limit supports USB 500mA load surges; REF pin supplies 50µA to external ADC reference without affecting regulation accuracy. |
Use Scenario: Providing regulated 3.3V to precision analog front-end (AFE), microcontroller, and LCD backlight in portable multimeters. IC Role / Device Role / Timing Role: Dual-role power IC: boost converter for digital rails + gain block used as low-battery comparator (threshold = 0.938V) to trigger warning LED. Use Value: Single-chip solution replaces discrete comparator + regulator; <30nA AIN bias current enables high-impedance battery-divider network for accurate voltage monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61088RHLR | Higher 2.2A switch current limit; 2.7V–12V input; no integrated gain block; requires external compensation. | Better suited for higher-input-voltage industrial sensors; lacks built-in comparator or linear-regulator support. | Select when >1.5A output or >5.5V input is required; not drop-in due to different pinout and control scheme. |
| LT3467EDD | 1.3A output; 2.7V–16V input; 1.3MHz fixed frequency; no Idle Mode™; no gain block; requires external Schottky. | Targeted at wide-input industrial systems; less optimized for ultra-low-IQ battery standby. | Choose for cost-sensitive designs where 110µA quiescent current and integrated gain functionality are not critical. |
Compared with TPS61088RHLR and LT3467EDD, the MAX1763EUE+ uniquely combines ultra-low 110µA no-load current, integrated gain block for system monitoring, and Idle Mode™ for adaptive efficiency-making it optimal for space-constrained, battery-critical wireless handsets where thermal headroom and feature integration outweigh raw current capability.
Availability
MAX1763EUE+ is available at Aetrix Electronics and suitable for digital cordless phones, wireless handsets, palmtop computers, and hand-held instruments requiring stable component supply with guaranteed long-term manufacturability and RoHS-compliant packaging.
Supply support for MAX1763EUE+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for portable, industrial, and communications systems.
The MAX1763EUE+ belongs to Maxim's low-noise, high-efficiency boost converter product line, designed specifically for battery-powered RF and handheld instrumentation where extended runtime, EMI control, and compact thermal design are critical.
FAQ
What is the minimum input voltage required to start up the MAX1763EUE+?
The MAX1763EUE+ guarantees startup at 1.1V input (0.9V to 1.1V typical) with load current below 1mA. Once started, it continues operating down to 0.7V input because internal power is derived from the output via the OUT pin. Full load should not be applied until output exceeds 2.3V, per datasheet Note 4.
How does the MAX1763EUE+ achieve low-noise operation in sensitive RF applications?
The MAX1763EUE+ supports three low-noise modes: forced-PWM (CLK/SEL = high) fixes switching at 1MHz for predictable harmonic filtering; external clock synchronization (CLK/SEL = 500kHz–1.2MHz) shifts noise away from critical bands; and its synchronous rectifier eliminates reverse-recovery noise from Schottky diodes-reducing broadband EMI in wireless handsets.
Can the MAX1763EUE+ be used to generate an adjustable output voltage, and what is the supported range?
Yes, the MAX1763EUE+ supports adjustable output from 2.5V to 5.5V using a resistive divider from OUT to GND connected to the FB pin. The internal FB regulation setpoint is 1.245V, and the input bias current is under 100nA-allowing high-value resistors without accuracy loss. For fixed 3.3V output, connect FB directly to GND.
What thermal considerations apply to the MAX1763EUE+ TSSOP-EP package?
The MAX1763EUE+ TSSOP-EP package delivers 1.5W continuous power dissipation when the exposed pad (EP) is soldered to a large PCB ground plane. Its junction-to-case thermal resistance is 53°C/W-significantly lower than the 115°C/W of the QSOP variant. Layout must minimize thermal resistance between EP and copper area to avoid exceeding 150°C junction temperature.
Does the MAX1763EUE+ include any integrated analog functions beyond power conversion?
Yes, the MAX1763EUE+ integrates a versatile gain block with 10mS transconductance and 0.938V internal reference. It can function as a low-battery comparator (e.g., monitoring cell voltage) or drive an external P-channel MOSFET to build a linear regulator-eliminating need for separate comparator or LDO in space-constrained portable designs.
MAX1763EUE+ 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
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.5V (3.3V)
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 2A (Switch)
- Frequency - Switching:
- 750kHz ~ 1.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP-EP
MAX1763EUE+ FAQ
1.How can I place an order for MAX1763EUE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1763EUE+ 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 MAX1763EUE+ reliable?
The price and inventory of MAX1763EUE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1763EUE+ is usually 5 days.
3.What payment methods are accepted for MAX1763EUE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1763EUE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1763EUE+?
MAX1763EUE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1763EUE+ 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 MAX1763EUE+?
For technical support, including MAX1763EUE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1763EUE+ requirements.
6.How does Aetrix verify that MAX1763EUE+ is sourced from the original manufacturer or authorized distributors?
All MAX1763EUE+ 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 MAX1763EUE+ meets industry standards.
7.What is the process for return or replacement of MAX1763EUE+?
All MAX1763EUE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1763EUE+, 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 MAX1763EUE+ part is unused and in its original packaging.
Return procedure for MAX1763EUE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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