My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1763EEE
- Part No.:
- MAX1763EEE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX1763EEE.pdf
- Description:
- IC REG BOOST ADJ/2.5V 2A 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,899
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX1763EEE 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 current, operates from 0.7V–5.5V input (guaranteed startup at 1.1V), and supports fixed 3.3V or adjustable 2.5V–5.5V output - enabling long-life operation in digital cordless phones and handheld instruments.
For engineers reviewing the MAX1763EEE datasheet, MAX1763EEE pinout, MAX1763EEE application, or MAX1763EEE equivalent, this page provides verified technical context on Idle Mode™ efficiency optimization, forced-PWM noise control, gain-block linear-regulator interfacing, and QSOP package thermal performance - all critical for RF-sensitive, low-quiescent-current designs.
Technical Context
The MAX1763EEE implements a dual-mode PWM/Idle Mode™ architecture: at medium-to-heavy loads it operates in fixed-frequency 1MHz synchronous-rectified boost; below ~25% load, it transitions to pulse-frequency modulation to reduce no-load supply current to 110µA. Its internal N-channel MOSFET (0.13Ω RDS(ON)) and P-channel synchronous rectifier (0.25Ω) enable up to 94% peak efficiency.
It integrates a 1.25V reference, programmable current limit via ISET, soft-start control, and a transconductance gain block (10mS, 0.938V threshold) usable as a low-battery comparator or linear-regulator controller. The CLK/SEL pin selects normal mode, forced-PWM, or external clock synchronization (500kHz–1.2MHz) - directly supporting EMI-sensitive communications equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.7V to 5.5V - supports single Li+, 1–3 alkaline/NiMH cells; bootstrapped operation allows continued regulation down to 0.7V after startup. |
| Guaranteed Startup Voltage | 1.1V at +25°C - enables reliable power-up from deeply discharged batteries in portable systems. |
| Output Voltage Options | Fixed 3.3V (FB grounded) or adjustable 2.5V–5.5V (via resistor divider) - accommodates diverse logic rail requirements without external regulators. |
| Switching Frequency | 1MHz nominal (0.75–1.25MHz over temp) - enables use of small 1.5µH inductors and low-ESR ceramic capacitors for compact PCB layout. |
| Peak Output Current | 1.5A - sufficient for powering RF front-ends, baseband processors, and display drivers in wireless handsets. |
| No-Load Supply Current | 110µA in Idle Mode™ - extends battery runtime in standby or intermittent-use applications like PCS phones. |
| Shutdown Current | 1µA - minimizes leakage during system sleep states, critical for always-on monitoring functions. |
Pinout & Package
The MAX1763EEE is housed in a 16-pin QSOP package (lead-free, RoHS-compliant), with 0.65mm pitch and exposed pad omitted (TSSOP-EP variant has EP). Thermal resistance θJA = 115°C/W; max continuous power dissipation = 667mW at +70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ONA) | On Control Input | Active-high enable; connect to OUT for default turn-on; includes ~0.15×VOUT hysteresis for noise immunity. |
| 2 (ISET) | Current Limit & Soft-Start Control | Adjusts peak inductor current (2.5A max); adding capacitor enables controlled output voltage ramp-up to limit inrush. |
| 3 (REF) | 1.25V Reference Bypass | Requires 0.22µF ceramic cap near pin; sources ≤50µA for external biasing or feedback scaling. |
| 4 (GND) | Analog Ground | Must be short-traced to PGND; separates signal reference from high-current return paths. |
| 5 (FB) | Feedback Input | Sets output voltage via resistive divider (1.245V threshold); input bias <100nA enables high-impedance dividers. |
| 6 (OUT) | IC Power Supply | Powered from regulated output; bypassed with 1.0µF ceramic cap; connected to POUT via 4.7Ω series resistor for stability. |
| 7 (AIN) | Gain Block Input | Accepts voltage for comparator or linear-regulator control; 0.938V internal reference; disabled when tied to OUT. |
| 8 (AO) | Gain Block Output | Open-drain N-channel output; sinks current when AIN < 0.75×REF; high-Z in shutdown. |
| 9 (CLK/SEL) | Mode Selection & Sync 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 joined close to IC to minimize ground bounce and EMI. |
| 11,14 (LX) | Inductor Switch Node | High dv/dt switching point; requires tight layout and Kelvin connection to inductor and POUT. |
| 13,15 (POUT) | Power Output | Source of internal P-channel synchronous rectifier; connects to output filter capacitor and load. |
| 16 (ONB) | Off Control Input | Active-high disable; connect to GND for normal operation; complements ONA for pushbutton ON/OFF sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Idle Mode™ Efficiency Optimization | Reduces no-load supply current to 110µA while maintaining 1MHz PWM under load - extends battery life without sacrificing transient response. |
| Synchronous Rectification | Integrated 0.25Ω P-channel rectifier improves full-load efficiency by ~5% vs. diode-based solutions - critical for thermal management in sealed enclosures. |
| Programmable Current Limit | ISET pin allows precise adjustment of peak inductor current (2.5A max) and soft-start timing - enables optimization of inductor size, output ripple, and inrush protection. |
| Gain Block Functionality | 10mS transconductance amplifier with 0.938V reference supports dual use as low-battery detector or external linear regulator controller - eliminates need for discrete comparators or LDOs. |
| External Clock Synchronization | CLK/SEL accepts 500kHz–1.2MHz external clock to shift switching harmonics away from sensitive RF bands - essential for cellular handset compliance. |
Applications
| Digital Cordless Phones | Wireless Handsets |
|---|---|
Use Scenario: Powering RF transceiver, baseband processor, and LCD backlight from single NiMH cell. IC Role / Device Role / Timing Role: Primary step-up regulator delivering stable 3.3V/5V rails with minimal conducted EMI. Use Value: Idle Mode™ reduces standby current to 110µA, extending talk time; forced-PWM mode ensures clean spectral profile during transmission. |
Use Scenario: Boosting voltage from aging Li+ cell (2.7V–4.2V) to drive 3.3V logic and 5V USB peripherals. IC Role / Device Role / Timing Role: High-efficiency DC-DC converter with guaranteed 1.1V startup and 1.5A capability. Use Value: Maintains system operation down to 0.7V input; synchronous rectification achieves >90% efficiency across full load range. |
| Hand-Held Instruments | Palmtop Computers |
Use Scenario: Supplying precision analog circuitry (ADC, sensor interface) and microcontroller from two alkaline cells. IC Role / Device Role / Timing Role: Low-noise, low-quiescent-current boost converter with tightly regulated output. Use Value: 1MHz fixed-frequency operation enables effective filtering of switching noise; REF pin supports accurate external biasing. |
Use Scenario: Generating multiple rails (3.3V, 5V) from single-cell battery in space-constrained mobile computing device. IC Role / Device Role / Timing Role: Compact, high-power-density step-up regulator in 16-pin QSOP package. Use Value: Adjustable output (2.5V–5.5V) and integrated gain block simplify multi-rail design and battery 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 |
|---|---|---|---|
| TPS61040DRBT | Fixed 5V output only; 28V VOUT max; 0.5A max output; no gain block or external sync capability. | Suitable for simpler, lower-current applications where adjustable output and advanced control features are unnecessary. | Select when cost and board area are prioritized over flexibility and RF noise control. |
| LT3467EDD | 2.5MHz switching frequency; 1.2A output; no Idle Mode™; includes integrated Schottky diode but no synchronous rectifier. | Better suited for ultra-compact layouts requiring smallest inductors, but less efficient at high load and lacks low-noise sync capability. | Choose for space-constrained designs needing higher frequency, accepting trade-offs in efficiency and EMI control. |
Compared with TPS61040DRBT and LT3467EDD, the MAX1763EEE offers unique integration of Idle Mode™, programmable gain block, and external clock synchronization - making it the preferred choice for battery-powered RF systems demanding both ultra-low quiescent current and precise EMI management.
Availability
The MAX1763EEE is available at Aetrix Electronics and suitable for digital cordless phones, wireless handsets, and handheld instruments requiring stable component supply with consistent parametric performance across temperature and production lots.
Supply support for MAX1763EEE 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, automotive, and communications markets.
The MAX1763EEE belongs to Maxim's low-noise, high-efficiency DC-DC converter product line, designed specifically for battery-powered wireless and portable instrumentation applications where extended runtime and EMI control are critical.
FAQ
What is the minimum input voltage required to start up the MAX1763EEE?
The MAX1763EEE guarantees startup at 1.1V input voltage at +25°C, with operation sustained down to 0.7V once regulation is achieved. This is enabled by its dedicated low-voltage startup oscillator and bootstrapped internal power supply derived from the OUT pin. The MAX1763EEE maintains this specification across its full -40°C to +85°C operating range, though startup time increases at temperature extremes.
How does the MAX1763EEE achieve low-noise operation in sensitive RF applications?
The MAX1763EEE supports three noise-control mechanisms: forced-PWM mode (CLK/SEL = HIGH) ensures constant 1MHz switching for predictable harmonic filtering; external clock synchronization (CLK/SEL = external signal) shifts switching energy away from critical RF bands (500kHz–1.2MHz range); and its synchronous rectifier eliminates diode reverse-recovery noise. These features collectively minimize conducted and radiated EMI in digital cordless phones and PCS handsets.
Can the MAX1763EEE be used to generate an adjustable output voltage, and how is it configured?
Yes, the MAX1763EEE supports adjustable output from 2.5V to 5.5V using the FB pin. A resistor divider is connected between OUT and GND, with FB tied to the divider midpoint. The internal feedback threshold is 1.245V, so R1 = R2 × (VOUT/1.245 − 1), where R2 ≤ 30kΩ. Input bias current at FB is <100nA, allowing high-value resistors without accuracy loss - a key advantage confirmed in the MAX1763EEE electrical characteristics table.
What is the purpose and implementation of the gain block in the MAX1763EEE?
The MAX1763EEE's gain block is a transconductance amplifier (10mS typical) with a 0.938V internal reference, accessible via AIN and AO pins. It can function as a low-battery comparator (e.g., monitoring cell voltage via resistor divider) or as a controller for an external P-channel MOSFET linear regulator. When AIN is tied to OUT, the gain block is disabled - a documented behavior ensuring predictable power sequencing in the MAX1763EEE functional diagram.
Does the MAX1763EEE require an external Schottky diode, and under what conditions?
Yes - an external Schottky diode (e.g., MBR0520L) is required when the MAX1763EEE output voltage exceeds 4V, or when assisting low-voltage startup below 1.1V. This is explicitly stated in the MAX1763EEE datasheet Notes 1 and 4, and shown in Figure 2. The diode parallels the internal P-channel synchronous rectifier to prevent reverse current flow and ensure reliable startup under marginal input conditions.
MAX1763EEE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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 FAQ
1.How can I place an order for MAX1763EEE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1763EEE 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 reliable?
The price and inventory of MAX1763EEE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1763EEE is usually 5 days.
3.What payment methods are accepted for MAX1763EEE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1763EEE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1763EEE?
MAX1763EEE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1763EEE 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?
For technical support, including MAX1763EEE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1763EEE requirements.
6.How does Aetrix verify that MAX1763EEE is sourced from the original manufacturer or authorized distributors?
All MAX1763EEE 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 meets industry standards.
7.What is the process for return or replacement of MAX1763EEE?
All MAX1763EEE units undergo pre-shipment inspection (PSI). If there is an issue with MAX1763EEE, 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 part is unused and in its original packaging.
Return procedure for MAX1763EEE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1763EEE Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
