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Analog Devices Inc./Maxim Integrated MAX1763EUE-TG068
- Part No.:
- MAX1763EUE-TG068
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MAX1763EUE-TG068.pdf
- Description:
- IC REG BOOST ADJ/2.5V 2A 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,490
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Product details
Overview
MAX1763EUE-TG068 from Maxim Integrated is a 1.5A, synchronous-rectified, 1MHz step-up DC-DC converter optimized 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 runtime in cordless phones and handheld instruments.
For engineers reviewing the MAX1763EUE-TG068 datasheet, MAX1763EUE-TG068 pinout, MAX1763EUE-TG068 application, or MAX1763EUE-TG068 equivalent, key selection criteria include its forced-PWM/Idle Mode™ dual-mode operation, integrated gain block for linear-regulator or low-battery comparator functions, 1.5W TSSOP-EP thermal capability, and external clock synchronization (500kHz–1.2MHz) to avoid RF interference bands.
Technical Context
The MAX1763EUE-TG068 implements a synchronous boost topology with an internal N-channel MOSFET switch (0.13Ω typ) and P-channel synchronous rectifier (0.25Ω typ), 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 - maintaining high efficiency without sacrificing noise performance.
It integrates a 1.25V precision reference, programmable current limit via ISET pin (2.0–3.4A range), soft-start control, and a transconductance gain block (10mS typ) with 0.938V internal threshold - supporting both power-OK monitoring and external P-channel linear regulator implementation. The device supports three operating modes selected by CLK/SEL: normal (auto-PFM/PWM), forced-PWM (low-noise, constant 1MHz), or externally synchronized (500kHz–1.2MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.7V to 5.5V - operates down to near-dead battery; startup guaranteed at 1.1V. |
| Output Voltage | Fixed 3.3V (±3.5%) or adjustable 2.5V–5.5V via FB divider - supports diverse system rail requirements. |
| Max Output Current | 1.5A at VOUT = 3.3V with VIN ≥ 2.4V - sufficient for RF front-end and baseband ICs in wireless handsets. |
| Switching Frequency | 1MHz nominal (0.75–1.25MHz over temp) - enables compact 1.5µH inductor and low-profile ceramic capacitors. |
| No-Load Quiescent Current | 110µA in Idle Mode™ - extends battery life in standby/sleep states of portable electronics. |
| Shutdown Current | 1µA - minimizes leakage during system off-state; logic-controlled via ONA/ONB pins. |
| Gain Block Transconductance | 10mS typical - drives external P-channel pass FET for linear regulation or provides accurate low-battery detection. |
Pinout & Package
The MAX1763EUE-TG068 is housed in a 16-pin TSSOP-EP package with exposed thermal pad (EP), rated for 1.5W continuous power dissipation and junction-to-case thermal resistance of 53°C/W - optimized for high-temperature or high-dissipation applications where QSOP would thermally saturate.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ONA) | On Control Input | Active-high enable; tied to OUT for default on-state; includes ~0.15×VOUT hysteresis for noise immunity. |
| 2 (ISET) | Peak Inductor Current Control | Sets current limit (2.0–3.4A) and enables soft-start via RC network; discharged internally during shutdown. |
| 3 (REF) | 1.25V Reference Bypass | Requires 0.22µF ceramic cap to GND within 5mm; sources ≤50µA for external biasing or feedback networks. |
| 4 (GND) | Analog Ground | Reference for internal circuits; must be short-traced to PGND to minimize noise coupling. |
| 5 (FB) | Feedback Input | 1.245V regulation threshold; connects to ground for 3.3V output or resistive divider for adjustable output. |
| 6 (OUT) | IC Power Supply | Supplies internal circuitry from output rail; bypassed with 1.0µF ceramic cap and isolated via 4.7Ω series resistor. |
| 7 (AIN) | Gain Block Input | Accepts voltage for comparator function (threshold = 0.938V) or linear regulator error amplification. |
| 8 (AO) | Gain Block Output | Open-drain N-channel output; sinks current when AIN < 0.75×REF; high-Z during shutdown or when AIN = OUT. |
| 9 (CLK/SEL) | Mode Selection & Sync Input | Selects Idle Mode™ (LOW), forced-PWM (HIGH), or external sync (500kHz–1.2MHz square wave). |
| 10,12 (PGND) | Power Ground | Source node of N-channel switch; both pins must be joined close to IC for low-inductance return path. |
| 11,14 (LX) | Switch Node | Connects to inductor; high di/dt node requiring tight layout; shared between internal N-FET and P-rectifier. |
| 13,15 (POUT) | Power Output | Source of internal P-channel synchronous rectifier; connects directly to output capacitor and load. |
| 16 (ONB) | Off Control Input | Active-high disable; tied to GND for default on-state; complements ONA for flexible logic-level control. |
| EP | Exposed Thermal Pad | Must be soldered to large PCB ground plane to achieve 1.5W thermal rating and 53°C/W θJC. |
Key Features
| Feature | Design Value |
|---|---|
| Idle Mode™ Adaptive Control | Automatically switches between PFM (light load) and fixed-frequency PWM (medium/heavy load) - maximizes efficiency across full load range without external intervention. |
| Synchronous Rectification | Integrated 130mΩ P-channel rectifier replaces Schottky diode - improves efficiency by ~5% and eliminates reverse recovery losses. |
| Low-Noise Forced-PWM Mode | 1MHz constant-frequency operation with controllable duty cycle - enables predictable EMI filtering and avoids sensitive RF bands. |
| External Clock Synchronization | Accepts 500kHz–1.2MHz external clock on CLK/SEL - allows precise placement of switching harmonics away from critical communication frequencies. |
| Integrated Gain Block | 10mS transconductance amplifier with 0.938V reference - supports either low-battery comparator (±30nA input bias) or external P-FET linear regulator. |
| Robust Startup Capability | Guaranteed operation from 1.1V input with CMOS low-voltage oscillator - sustains functionality even as primary cell voltage collapses. |
Applications
| Digital Cordless Phones | Wireless Handsets |
|---|---|
Use Scenario: Powering RF transceiver and baseband processor from single NiMH cell (1.2V nominal) with deep discharge tolerance. IC Role / Device Role / Timing Role: Primary step-up regulator generating stable 3.3V rail; manages dynamic load transients during TX bursts via fast-response PWM control. Use Value: 110µA quiescent current extends standby time; Idle Mode™ maintains >85% efficiency at 10mA sleep current while delivering 1.5A peak during transmission. |
Use Scenario: Supplying 5.0V to camera module and Bluetooth radio in compact handheld device powered by single Li+ cell. IC Role / Device Role / Timing Role: Adjustable-output boost converter (set to 5.0V); synchronized to system clock to avoid interference with 2.4GHz ISM band. Use Value: External clock sync (1.0MHz) places harmonics outside Wi-Fi/Bluetooth bands; 1.5W TSSOP-EP handles 1.2A continuous load without thermal derating. |
| Hand-Held Instruments | Palmtop Computers |
Use Scenario: Generating clean 3.3V supply for precision ADC and microcontroller in battery-operated multimeter. IC Role / Device Role / Timing Role: Low-noise power source using forced-PWM mode; gain block configured as low-battery comparator (trip at 2.15V). Use Value: Fixed 1MHz switching enables effective LC filtering (<10mVpp ripple); comparator output (AO) triggers display warning before battery exhaustion. |
Use Scenario: Providing regulated 3.3V and 5.0V rails from shared Li+ battery in early-generation palmtop with LCD backlight and flash memory. IC Role / Device Role / Timing Role: Dual-role IC: main boost converter + gain block driving external P-FET for auxiliary 5.0V linear rail. Use Value: Integrated gain block eliminates need for separate comparator/LDO; reduces BOM count and PCB area while maintaining ±1% output accuracy. |
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 5.5A switch current; 2.7V–12V input; no integrated gain block; requires external compensation. | Better suited for higher-power applications (e.g., USB PD sink), but lacks analog monitoring features. | Select when >2A output or wide-input industrial use is required; not drop-in due to different pinout and control scheme. |
| LT3467EDD | 1.3A max output; 1.2MHz fixed frequency; no Idle Mode™; no gain block; smaller 10-pin DFN package. | Optimized for space-constrained designs where only basic boost functionality is needed. | Choose for minimal footprint and cost-sensitive consumer devices; cannot replace MAX1763EUE-TG068's gain block or low-VIN startup capability. |
Compared with TPS61088RHLR and LT3467EDD, the MAX1763EUE-TG068 uniquely combines ultra-low 1.1V startup, integrated gain block for system monitoring/regulation, and adaptive Idle Mode™ - making it optimal for battery-critical wireless handsets where runtime, analog integration, and RF noise control are co-prioritized.
Availability
MAX1763EUE-TG068 is available at Aetrix Electronics and suitable for digital cordless phones, wireless handsets, and handheld instruments requiring stable component supply, long battery life, and low-noise power conversion under varying load conditions.
Supply support for MAX1763EUE-TG068 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 demanding applications in communications, computing, and portable electronics.
The MAX1763 product line was designed specifically for battery-powered wireless systems requiring high efficiency at ultralow input voltages, low-noise operation, and integrated analog functions - targeting cordless telephony, PCS handsets, and portable instrumentation markets.
FAQ
What is the minimum input voltage required to start up the MAX1763EUE-TG068?
The MAX1763EUE-TG068 guarantees startup at 1.1V input (typical 0.9V, max 1.1V) with load current < 1mA at +25°C, enabled by its dedicated low-voltage CMOS oscillator. Once regulation is achieved, it continues operating down to 0.7V input because internal circuitry is powered from the output via the OUT pin. Full load must not be applied until output exceeds 2.3V.
How does the MAX1763EUE-TG068 achieve high efficiency at light loads?
The MAX1763EUE-TG068 uses Idle Mode™, which automatically transitions from fixed-frequency PWM to pulse-frequency modulation (PFM) below ~25% of full load. This reduces switching losses while maintaining regulation, achieving 110µA no-load quiescent current - significantly lower than standard PWM-only boost converters operating at 1MHz.
Can the MAX1763EUE-TG068 drive an external P-channel MOSFET for linear regulation?
Yes, the MAX1763EUE-TG068's integrated gain block (pins AIN/AO) can drive an external P-channel MOSFET to build a precision linear regulator. With AIN referenced to a resistor divider and AO sinking gate current, it forms a closed-loop error amplifier with 10mS transconductance - enabling low-dropout regulation and power-OK signaling without additional ICs.
What thermal considerations apply to the MAX1763EUE-TG068 in its TSSOP-EP package?
The MAX1763EUE-TG068 in TSSOP-EP achieves 1.5W continuous power dissipation and 53°C/W junction-to-case thermal resistance - contingent on proper soldering of the exposed pad (EP) to a large internal or external ground plane. Without this, thermal performance degrades to QSOP-level (667mW), risking thermal shutdown under sustained 1.5A load.
How is output voltage adjusted on the MAX1763EUE-TG068?
For fixed 3.3V output, connect FB pin directly to GND. For adjustable output (2.5V–5.5V), connect a resistor divider from OUT to GND with FB at the midpoint; the internal FB threshold is 1.245V. Use R2 ≤ 30kΩ and calculate R1 = R2 × ((VOUT / 1.245) − 1). Input bias current into FB is <100nA, permitting high-value resistors without accuracy loss.
MAX1763EUE-TG068 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Bulk
- 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:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP-EP
MAX1763EUE-TG068 FAQ
1.How can I place an order for MAX1763EUE-TG068 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1763EUE-TG068 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-TG068 reliable?
The price and inventory of MAX1763EUE-TG068 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1763EUE-TG068 is usually 5 days.
3.What payment methods are accepted for MAX1763EUE-TG068?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1763EUE-TG068 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1763EUE-TG068?
MAX1763EUE-TG068 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1763EUE-TG068 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-TG068?
For technical support, including MAX1763EUE-TG068 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1763EUE-TG068 requirements.
6.How does Aetrix verify that MAX1763EUE-TG068 is sourced from the original manufacturer or authorized distributors?
All MAX1763EUE-TG068 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-TG068 meets industry standards.
7.What is the process for return or replacement of MAX1763EUE-TG068?
All MAX1763EUE-TG068 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1763EUE-TG068, 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-TG068 part is unused and in its original packaging.
Return procedure for MAX1763EUE-TG068:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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