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Analog Devices Inc./Maxim Integrated MAX1763EUE+T
- Part No.:
- MAX1763EUE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MAX1763EUE+T.pdf
- Description:
- IC REG BOOST ADJ/2.5V 2A 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX1763EUE+T from Maxim Integrated is a 1.5A, synchronous-rectified, 1MHz step-up DC-DC converter in a 16-pin TSSOP-EP package, designed for battery-powered wireless devices. 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), features 110µA no-load quiescent current in low-power mode, and guarantees startup at 1.1V - enabling ultra-long battery life in cordless phones and handheld instruments.
For engineers reviewing the MAX1763EUE+T datasheet, MAX1763EUE+T pinout, MAX1763EUE+T application, or MAX1763EUE+T equivalent, key selection criteria include its forced-PWM/Idle Mode™ dual-operation capability, integrated gain block for linear-regulator or low-battery comparator use, 1.5W thermal rating in TSSOP-EP, and external clock synchronization (500kHz–1.2MHz) to avoid RF interference bands.
Technical Context
The MAX1763EUE+T implements a synchronous boost topology with an internal N-channel MOSFET switch (0.13Ω typical on-resistance) and P-channel synchronous rectifier (0.25Ω typical), enabling up to 94% efficiency across load ranges. Its Idle Mode™ dynamically transitions between pulse-frequency modulation (PFM) at light loads and fixed-frequency PWM at medium/heavy loads - optimizing quiescent current and ripple simultaneously.
It integrates a 1.25V precision reference, programmable current limit via ISET (2.0–3.4A range), soft-start control, and a transconductance gain block (10mS nominal) with AIN/AO terminals usable as a low-battery comparator (938mV threshold) or linear regulator driver. The CLK/SEL pin selects among three modes: normal (auto-PFM/PWM), forced-PWM (low-noise, constant 1MHz), or externally synchronized PWM (500kHz–1.2MHz).
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 alkaline/NiMH, and operation down to brownout level without shutdown. |
| Output Voltage | Fixed 3.3V (±3.5%) or adjustable 2.5V–5.5V - set via FB pin with 1.245V reference; enables system-level voltage flexibility. |
| Max Output Current | 1.5A at VOUT = 3.3V, VIN = 2.4V - sufficient for RF power amplifiers and baseband processors in portable comms. |
| Switching Frequency | 1MHz (typical, ±20%) - enables use of small 1.5µH inductors and low-ESR ceramic capacitors for compact PCB layout. |
| No-Load Quiescent Current | 110µA (typical) in Idle Mode™ - extends shelf life and runtime in always-on sensor or standby-mode devices. |
| Startup Input Voltage | 1.1V (guaranteed) - ensures reliable boot from deeply discharged batteries in handheld instrumentation. |
| Thermal Package Rating | 1.5W continuous dissipation in TSSOP-EP - achieved via exposed pad soldered to ground plane; junction-to-case θJC = 53°C/W. |
Pinout & Package
The MAX1763EUE+T is housed in a 16-pin TSSOP-EP (Exposed Pad) package, measuring 5mm × 6.1mm × 1.2mm, with the EP pad thermally connected to PCB ground for enhanced power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ONA) | Enable control input (active-high) | Logic high or ONB low activates regulation; includes ~0.15×VOUT hysteresis for noise immunity in pushbutton ON/OFF circuits. |
| 2 (ISET) | Peak inductor current programming | Voltage divider from REF sets current limit (2.0–3.4A); capacitor to GND adds soft-start ramp to limit inrush. |
| 3 (REF) | 1.25V internal reference output | Bypassed with 0.22µF ceramic cap; supplies up to 50µA external load - used for feedback dividers and ISET scaling. |
| 4 (GND) | Analog ground reference | Must be short-traced to PGND; separates signal return from high-current switching paths to minimize noise coupling. |
| 5 (FB) | Feedback input for output regulation | 1.245V threshold; connects to ground for 3.3V fixed output or resistive divider for adjustable outputs (2.5V–5.5V). |
| 6 (OUT) | IC power supply input | Powered from POUT via 4.7Ω series resistor; bypassed with 1.0µF ceramic cap - provides stable bias for internal circuitry. |
| 7 (AIN) | Gain block differential input | Accepts voltage for low-battery detection (938mV threshold) or linear regulator error sensing; bias current <30nA enables high-R dividers. |
| 8 (AO) | Open-drain gain block output | Sinks current when AIN < 0.75×REF; high-Z during shutdown - drives external PFET gate or pulls LBO signal low. |
| 9 (CLK/SEL) | Mode select and sync input | Low = Idle Mode™, High = forced-PWM, AC signal = synchronized PWM (500kHz–1.2MHz) - critical for EMI-sensitive RF designs. |
| 10,12 (PGND) | N-channel MOSFET source | High-current return path for switch node; both pins must be tied together near device to minimize ground bounce. |
| 11,14 (LX) | Switch node connection | Connects to inductor; carries high di/dt switching current - requires short, wide copper traces to reduce EMI and losses. |
| 13,15 (POUT) | Power output (synchronous rectifier source) | Delivers regulated output; internal P-FET source - external Schottky required if VOUT > 4V to prevent reverse conduction. |
| 16 (ONB) | Disable control input (active-low) | Logic low disables IC; used with ONA for complementary enable logic per Table 3 - supports momentary pushbutton control. |
| EP | Exposed thermal pad | Must be soldered to large PCB ground plane; primary thermal path for 1.5W dissipation - reduces θJA by ~40°C/W vs. QSOP. |
Key Features
| Feature | Design Value |
|---|---|
| Idle Mode™ adaptive control | Automatically switches between PFM (light load, 110µA IQ) and fixed-frequency PWM (full load, 1MHz) - maximizes efficiency across 0.01mA–1.5A load range without external intervention. |
| Integrated gain block (10mS GM) | Configurable as low-battery comparator (938mV threshold) or linear regulator error amplifier - eliminates need for external op-amp in power-OK or post-regulation circuits. |
| Synchronous rectification | Internal 130mΩ P-channel FET replaces Schottky diode - improves full-load efficiency by ~5% and reduces thermal stress vs. asynchronous designs. |
| External clock synchronization | Accepts 500kHz–1.2MHz clock on CLK/SEL - shifts switching harmonics away from sensitive IF/RF bands in PCS phones and wireless handsets. |
| Guaranteed 1.1V startup | Operates from depleted batteries down to 1.1V input using dedicated low-voltage oscillator - ensures reliable boot in palmtop computers after storage. |
Applications
| Digital Cordless Phones | Wireless Handsets |
|---|---|
Use Scenario: Powering RF front-end and baseband processor from single NiMH cell (1.2V). IC Role / Device Role: Primary step-up regulator delivering stable 3.3V/5V rail with ultra-low noise to avoid TX/RX desensitization. Use Value: Forced-PWM mode suppresses variable-frequency switching noise; 1MHz operation allows compact 1.5µH inductor and avoids GSM 900MHz harmonics. |
Use Scenario: Supplying display backlight and audio codec in battery-operated Bluetooth headset. IC Role / Device Role: High-efficiency boost converter with programmable current limit to manage peak LED current surges. Use Value: Idle Mode™ cuts IQ to 110µA during idle, extending talk time; soft-start (via ISET cap) prevents inrush-induced voltage droop on shared battery rail. |
| Hand-Held Instruments | Palmtop Computers |
Use Scenario: Generating 5V rail for precision ADC and op-amps from 1.5V alkaline cell in portable multimeter. IC Role / Device Role: Low-noise, high-PSRR boost regulator with gain block used as battery-voltage monitor. Use Value: AIN/AO gain block provides accurate low-battery warning (938mV threshold) without extra comparator; 0.7V operating floor preserves functionality until cell depletion. |
Use Scenario: Providing 3.3V core voltage for ARM processor and 5V for USB interface from single Li+ cell in PDA. IC Role / Device Role: Dual-rail capable boost converter with TSSOP-EP thermal performance for sustained CPU load. Use Value: 1.5W package rating enables continuous 1.5A output at +70°C ambient; exposed pad minimizes thermal derating in sealed plastic enclosures. |
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 output, 2.7V–12V input, but 200µA IQ in PFM mode - lacks gain block and external clock sync. | Preferred for higher-current apps like portable displays; unsuitable where low-battery monitoring or RF sync is required. | Select when max output current >1.5A is needed and gain block functionality is not used. |
| LT3467EMS#TRPBF | 1.3A output, 1.2V–16V input, 2.5MHz switching, but no Idle Mode™ or integrated gain block - uses external sync only. | Better for space-constrained designs needing 2.5MHz; lacks low-IQ light-load optimization and comparator function. | Choose for ultra-compact layouts requiring >2MHz frequency and where 110µA IQ is non-critical. |
Compared with TPS61088RHLR and LT3467EMS#TRPBF, the MAX1763EUE+T uniquely combines sub-120µA quiescent current, integrated gain block for system monitoring, and precise external clock synchronization - making it optimal for RF-sensitive, battery-limited portable instruments where feature integration reduces BOM count.
Availability
MAX1763EUE+T is available at Aetrix Electronics and suitable for digital cordless phones, wireless handsets, and handheld instruments requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX1763EUE+T 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 industrial, communications, and consumer applications.
The MAX1763EUE+T belongs to Maxim's low-noise, high-efficiency DC-DC converter product line, engineered specifically for battery-powered RF and portable instrumentation where minimal quiescent current, EMI control, and system integration are critical design requirements.
FAQ
What is the guaranteed minimum input voltage required to start up the MAX1763EUE+T?
The MAX1763EUE+T guarantees startup at 1.1V input voltage under standard test conditions (ILOAD < 1mA, TA = +25°C). Once regulation is established, it continues operating down to 0.7V input due to bootstrapped operation from the POUT rail. This enables reliable boot from deeply discharged alkaline or NiMH cells in handheld devices.
How does the MAX1763EUE+T achieve low-noise operation in RF-sensitive applications?
The MAX1763EUE+T achieves low-noise operation through forced-PWM mode (CLK/SEL = high), which locks switching at a constant 1MHz frequency - enabling predictable harmonic filtering - and external clock synchronization (500kHz–1.2MHz), allowing users to shift switching energy away from critical RF bands like GSM or Bluetooth. Its synchronous rectification also eliminates diode reverse-recovery noise.
Can the MAX1763EUE+T generate an adjustable output voltage, and how is it configured?
Yes, the MAX1763EUE+T supports adjustable output from 2.5V to 5.5V using the FB pin. A resistive divider is connected from POUT to GND, with the FB node referenced to the internal 1.245V regulation threshold. For example, to set 5.0V output, use R1 = 91kΩ and R2 = 30kΩ. The FB input bias current (<100nA) permits high-value resistors without accuracy loss.
What is the purpose and configuration of the gain block in the MAX1763EUE+T?
The gain block in the MAX1763EUE+T (pins AIN/AO) functions as either a low-battery comparator (938mV threshold) or a transconductance amplifier (10mS) for driving external P-channel MOSFETs in linear-regulator configurations. To use as a comparator, connect AIN to a resistor divider from VOUT; AO pulls low when battery drops below threshold. To disable, tie AIN to OUT.
Why does the MAX1763EUE+T require an external Schottky diode for outputs above 4V?
The MAX1763EUE+T includes an internal P-channel synchronous rectifier optimized for outputs ≤4V. At VOUT > 4V, the body diode of the internal P-FET becomes forward-biased during startup or transient conditions, risking reverse current flow and potential damage. An external Schottky diode (e.g., MBR0520L) from LX to POUT clamps this condition and ensures safe operation - as explicitly required in the datasheet for >4V outputs.
MAX1763EUE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX1763EUE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1763EUE+T 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+T reliable?
The price and inventory of MAX1763EUE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1763EUE+T is usually 5 days.
3.What payment methods are accepted for MAX1763EUE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1763EUE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1763EUE+T?
MAX1763EUE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1763EUE+T 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+T?
For technical support, including MAX1763EUE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1763EUE+T requirements.
6.How does Aetrix verify that MAX1763EUE+T is sourced from the original manufacturer or authorized distributors?
All MAX1763EUE+T 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+T meets industry standards.
7.What is the process for return or replacement of MAX1763EUE+T?
All MAX1763EUE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1763EUE+T, 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+T part is unused and in its original packaging.
Return procedure for MAX1763EUE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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