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Analog Devices Inc./Maxim Integrated MAX1763EEE+T
- Part No.:
- MAX1763EEE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX1763EEE+T.pdf
- Description:
- IC REG BOOST ADJ/2.5V 2A 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,086
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Product details
Overview
MAX1763EEE+T from Maxim Integrated is a synchronous-rectified, 1MHz step-up DC-DC converter optimized for battery-powered wireless devices. It delivers up to 1.5A output at fixed 3.3V or adjustable 2.5V–5.5V, operates from 0.7V–5.5V input (guaranteed startup at 1.1V), and achieves up to 94% efficiency with 110µA no-load quiescent current in low-power mode. It is used in digital cordless phones and handheld instruments requiring long battery life and low-noise power.
For engineers reviewing the MAX1763EEE+T datasheet, MAX1763EEE+T pinout, MAX1763EEE+T application, or MAX1763EEE+T equivalent, key selection criteria include guaranteed 1.1V startup voltage, 16-pin QSOP package with exposed thermal pad option, Idle Mode™ efficiency optimization, forced-PWM noise control, and integrated analog gain block for linear regulator or low-battery comparator functions.
Technical Context
The MAX1763EEE+T implements a synchronous boost topology using an internal N-channel MOSFET switch and P-channel synchronous rectifier (130mΩ typical on-resistance). Its dual-mode operation-Idle Mode™ for light loads and fixed-frequency PWM at medium/heavy loads-enables high efficiency across 0.02A–1.5A output range while maintaining 1MHz switching frequency in forced-PWM mode.
It integrates a 1.25V precision reference, programmable current limit via ISET pin, soft-start control, and a transconductance gain block (10mS nominal) with AIN/AO terminals. The gain block supports external P-channel linear regulators or low-battery detection with 0.938V internal reference and ±30nA input bias current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.7V to 5.5V - supports single Li+, one-to-three alkaline/NiCd/NiMH cells; bootstrapped operation enables continued regulation down to 0.7V after startup. |
| Guaranteed Startup Voltage | 1.1V at +25°C - ensures reliable turn-on from deeply discharged batteries without external assist circuitry. |
| Output Voltage | Fixed 3.3V (FB grounded) or adjustable 2.5V–5.5V (via resistor divider) - FB regulation setpoint is 1.245V with <100nA input bias for high-accuracy feedback. |
| Switching Frequency | 1MHz (typical, CLK/SEL = OUT) - enables use of small 1.5µH inductors and low-ESR ceramic capacitors for compact PCB layout. |
| Peak Output Current | 1.5A - achievable with VIN ≥2.4V and VOUT = 3.3V; limited by internal N-channel current limit (2.0–3.4A) and thermal design. |
| No-Load Quiescent Current | 110µA (typical, Idle Mode™) - extends battery runtime in standby or intermittent-use applications like wireless handsets. |
| Shutdown Current | 1µA (max) - achieved when ONA = low and ONB = high; enables ultra-low-power system-level sleep states. |
Pinout & Package
The MAX1763EEE+T is housed in a 16-pin QSOP package (5.0mm × 10.2mm, 1.0mm height) with standard lead pitch of 0.65mm. Thermal performance is optimized via internal die attachment to the leadframe; no exposed pad is present (unlike TSSOP-EP variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ONA) | On Control Input | Active-high enable; tied to OUT for default operation; provides hysteresis (~0.15×VOUT) to prevent chatter during marginal supply conditions. |
| 2 (ISET) | Current Limit & Soft-Start Control | Adjusts peak inductor current (2.5A max when tied to REF); capacitor to GND enables controlled output voltage ramp-up to limit inrush. |
| 3 (REF) | 1.25V Reference Bypass | Requires 0.22µF ceramic capacitor within 5mm; sources up to 50µA for external biasing or feedback networks. |
| 4 (GND) | Analog Ground Reference | Low-impedance return for REF, FB, and AIN; must be short-traced to PGND to minimize noise coupling into sensitive analog nodes. |
| 5 (FB) | Feedback Input | Sets output voltage via resistive divider (1.245V threshold); <100nA input current allows high-value resistors without accuracy loss. |
| 6 (OUT) | IC Power Supply Input | Derives internal bias from POUT via series 4.7Ω resistor; bypassed with 1.0µF ceramic capacitor to stabilize gate drive and reference circuits. |
| 7 (AIN) | Gain Block Input | Accepts voltage for comparator or linear regulator function; 0.938V internal reference enables low-battery detection with ±30nA input bias. |
| 8 (AO) | Gain Block Output | Open-drain N-channel output; sinks current when VAIN < 0.75×VREF; high-Z during shutdown or when AIN = OUT. |
| 9 (CLK/SEL) | Mode Selection & Clock Input | Selects Idle Mode™ (low), forced-PWM (high), or external sync (500kHz–1.2MHz); controls noise spectrum and light-load behavior. |
| 10,12 (PGND) | Power Ground Return | Source node for N-channel MOSFET; both pins must be connected together near device to minimize ground bounce and EMI. |
| 11,14 (LX) | Inductor Switch Node | High dv/dt switching point; pins must be shorted together near IC to reduce parasitic inductance and ringing. |
| 13,15 (POUT) | Power Output Terminal | Source of internal P-channel synchronous rectifier; connects directly to output capacitor and load; requires low-ESR bulk capacitance. |
| 16 (ONB) | Off Control Input | Active-low disable; tied to GND for normal operation; complements ONA for flexible logic-level on/off sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Idle Mode™ Efficiency Optimization | Automatically transitions between pulse-frequency modulation (light load) and fixed-frequency PWM (medium/heavy load), improving light-load efficiency by >30% versus fixed-frequency-only designs. |
| Synchronous Rectification | Integrated 130mΩ P-channel rectifier replaces external Schottky diode, reducing conduction losses and improving full-load efficiency by ~5% over diode-based boost converters. |
| Low-Noise Forced-PWM Mode | Enables constant 1MHz operation regardless of load, producing predictable harmonic content that simplifies EMI filtering in RF-sensitive applications like PCS phones. |
| Programmable Current Limit & Soft-Start | ISET pin allows precise adjustment of peak inductor current (2.0–3.4A range) and implementation of user-defined soft-start time constant (tSS = RSSCSS) to control inrush. |
| Integrated Analog Gain Block | 10mS transconductance amplifier with 0.938V reference supports either external P-channel linear regulator (for clean auxiliary rails) or low-battery comparator (with <30nA input bias). |
Applications
| Digital Cordless Phones | Wireless Handsets |
|---|---|
Use Scenario: Powering RF front-end and baseband ICs from single-cell NiMH battery with variable discharge profile. IC Role / Device Role / Timing Role: Primary step-up regulator generating stable 3.3V rail; manages dynamic load transients during TX bursts and maintains regulation down to 0.9V input. Use Value: Idle Mode™ reduces no-load current to 110µA, extending talk time by >25% versus conventional boost converters; forced-PWM mode suppresses switching noise near 900MHz ISM band. |
Use Scenario: Supplying microcontroller, display backlight, and Bluetooth module in compact handheld communicator. IC Role / Device Role / Timing Role: Main DC-DC converter delivering 1.5A at 3.3V; synchronized to system clock to avoid interference with 2.4GHz Wi-Fi/Bluetooth bands. Use Value: 1MHz switching enables use of miniature 1.5µH shielded inductor and 100µF ceramic output cap; QSOP package fits tight board space constraints. |
| Hand-Held Instruments | Palmtop Computers |
Use Scenario: Providing regulated 5V rail for precision ADCs and op-amps in portable multimeter or data logger. IC Role / Device Role / Timing Role: Adjustable-output boost converter (set to 5.0V) with low output ripple (<10mVp-p in FPWM mode) and high PSRR. Use Value: Gain block used as low-battery comparator (trip at 2.15V) triggers graceful shutdown before measurement error occurs; REF pin supplies accurate bias to external analog circuitry. |
Use Scenario: Generating core 3.3V and I/O 5V rails from single Li+ cell in early-generation palmtop PCs. IC Role / Device Role / Timing Role: Dual-rail power solution: one MAX1763EEE+T for 3.3V CPU core, another for 5V peripheral bus; both synchronized to avoid beat frequencies. Use Value: Guaranteed 1.1V startup ensures boot from partially depleted battery; 16-pin QSOP allows manual rework and avoids thermal challenges of EP packages in low-volume assembly. |
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 current, wider 2.7V–12V input range, but requires minimum 1.8V startup and lacks integrated gain block. | Better suited for higher-power USB PD sink applications; not ideal for sub-1.2V cold-start battery systems. | Select when >1.5A output or >5.5V input is required; avoid if gain block functionality or ultra-low startup voltage is critical. |
| LT3467EDD#TRPBF | Fixed 1.2MHz frequency, 1.3A output, no Idle Mode™, but includes true shutdown disconnect and lower 0.8V startup voltage. | Preferred for ultra-low-voltage energy harvesting or coin-cell applications where 1.1V startup is insufficient. | Choose for <1.1V input scenarios or when output disconnect during shutdown is mandatory; trade off Idle Mode™ efficiency for broader startup range. |
Compared with TPS61088RHLR and LT3467EDD#TRPBF, the MAX1763EEE+T uniquely combines guaranteed 1.1V startup, integrated gain block for system monitoring, and Idle Mode™ for optimal light-load efficiency-making it the preferred choice for battery-powered wireless handsets operating across wide temperature and discharge ranges.
Availability
MAX1763EEE+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 MAX1763EEE+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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX1763EEE+T belongs to Maxim's low-noise, high-efficiency boost converter product line, designed specifically for battery-powered portable electronics where extended runtime, compact size, and RF-friendly power delivery are critical.
FAQ
What is the minimum input voltage required to start up the MAX1763EEE+T?
The MAX1763EEE+T guarantees startup at 1.1V input (at +25°C, ILOAD < 1mA), verified per datasheet Figure 2 test circuit. Once regulation is achieved, it continues operating down to 0.7V due to bootstrapped power from the POUT rail through the OUT pin. This makes the MAX1763EEE+T suitable for deeply discharged alkaline or NiMH cells in handheld instruments.
How does the MAX1763EEE+T achieve low-noise operation in sensitive RF applications?
The MAX1763EEE+T supports forced-PWM mode (CLK/SEL = high) to maintain constant 1MHz switching frequency across all load conditions, producing predictable harmonics that are easily filtered. It also allows external clock synchronization (500kHz–1.2MHz) to shift noise away from critical bands like 900MHz or 2.4GHz, a capability confirmed in the Typical Operating Characteristics section of the MAX1763EEE+T datasheet.
Can the MAX1763EEE+T generate output voltages above 4V?
Yes, the MAX1763EEE+T supports adjustable outputs from 2.5V to 5.5V via the FB pin, but an external Schottky diode (e.g., MBR0520L) must be connected from LX to POUT when VOUT > 4V. This is required per Note 1 in the Absolute Maximum Ratings and confirmed in the Detailed Description section to prevent reverse current and ensure reliable startup under high-step-up ratios.
What is the purpose of the AIN and AO pins on the MAX1763EEE+T?
The AIN and AO pins form an integrated transconductance gain block (10mS typical) with a 0.938V internal reference. AIN accepts an external voltage divider for low-battery detection (e.g., trip at 2.15V), while AO provides open-drain output to drive an external P-channel MOSFET for a linear regulator stage. Both functions are validated in Figures 3–5 and Electrical Characteristics tables of the MAX1763EEE+T datasheet.
Does the MAX1763EEE+T require external compensation components?
No, the MAX1763EEE+T uses internal compensation and requires no external RC network on the FB pin. Stability is ensured across its full output range (2.5V–5.5V) and load conditions (0–1.5A) with standard 1.5µH inductor and 47µF–220µF ceramic output capacitors, as demonstrated in the Typical Operating Circuit (Figure 2) and Design Procedure section of the MAX1763EEE+T documentation.
MAX1763EEE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- 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-QSOP
MAX1763EEE+T FAQ
1.How can I place an order for MAX1763EEE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1763EEE+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 MAX1763EEE+T reliable?
The price and inventory of MAX1763EEE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1763EEE+T is usually 5 days.
3.What payment methods are accepted for MAX1763EEE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1763EEE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1763EEE+T?
MAX1763EEE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1763EEE+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 MAX1763EEE+T?
For technical support, including MAX1763EEE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1763EEE+T requirements.
6.How does Aetrix verify that MAX1763EEE+T is sourced from the original manufacturer or authorized distributors?
All MAX1763EEE+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 MAX1763EEE+T meets industry standards.
7.What is the process for return or replacement of MAX1763EEE+T?
All MAX1763EEE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1763EEE+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 MAX1763EEE+T part is unused and in its original packaging.
Return procedure for MAX1763EEE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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