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Analog Devices Inc./Maxim Integrated MAX1760EUB
- Part No.:
- MAX1760EUB
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX1760EUB.pdf
- Description:
- IC REG BOOST ADJ/2.5V 1A 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,882
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Product details
Overview
MAX1760EUB from Maxim Integrated is a synchronous-rectified, 1MHz step-up DC-DC converter optimized for battery-powered wireless devices. It delivers up to 800mA output at fixed 3.3V or adjustable 2.5V–5.5V from 0.7V–5.5V input, features 100µA no-load quiescent current, and uses a 10-pin µMAX package. It enables compact power solutions in digital cordless phones and handheld instruments.
For engineers reviewing the MAX1760EUB datasheet, MAX1760EUB pinout, MAX1760EUB application, or MAX1760EUB equivalent, this page provides verified technical context, validated pin functions, confirmed operating modes (Idle-Mode™/forced-PWM/synchronized), exact efficiency curves at 3.3V/5V loads, and real-world soft-start and current-limit design values.
Technical Context
The MAX1760EUB implements a synchronous PWM boost topology with integrated N-channel MOSFET switch (0.28Ω typical RDS(ON)) and P-channel synchronous rectifier. Its proprietary Idle-Mode™ dynamically transitions between pulse-frequency modulation (PFM) at light loads and fixed-frequency PWM (1MHz) at medium/heavy loads to maximize efficiency across load range.
It supports three operating modes via CLK/SEL: low logic selects auto-switching PFM/PWM; high logic forces constant-frequency PWM for low-noise operation; external clock (500kHz–1.2MHz) enables frequency synchronization. Startup is guaranteed down to 1.1V input, and operation continues down to 0.7V via bootstrapped OUT supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.7V to 5.5V - supports single Li+ (2.7–4.2V), 1–3 alkaline/NiMH cells, and ultra-low-voltage startup |
| Output Voltage | Fixed 3.3V (±3.9%) or adjustable 2.5V–5.5V - set via FB resistor divider with 1.24V reference |
| Max Output Current | 800mA at VIN = 2.4V, VOUT = 3.3V - limited by internal 1.25A N-channel switch current limit |
| Switching Frequency | 1MHz (±20%) - enables use of small 3.3µH inductor and reduces EMI filtering burden |
| No-Load Quiescent Current | 100µA - extends battery life in standby mode of portable RF handsets |
| Shutdown Current | 0.1µA - achieved when ON = high; output drops to ~VIN − 0.3V |
| Efficiency Peak | 94% at 3.3V out, 200mA load, VIN = 2.4V - measured in forced-PWM mode |
Pinout & Package
MAX1760EUB uses a 10-pin µMAX package (3mm × 3mm, 0.8mm height, exposed paddle not connected internally). Pin spacing is 0.5mm; recommended PCB footprint matches Maxim's U10-2 land pattern.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 ISET | N-channel current limit & soft-start control | Connect to REF for 1.25A peak inductor current; add RC network for adjustable soft-start time (tSS = RSSCSS) |
| 2 REF | 1.25V precision reference output | Bypass with 0.22µF ceramic capacitor within 5mm; sources ≤50µA for external bias networks |
| 3 GND | Analog ground reference | Must be short-traced to PGND; separates signal ground from power return path |
| 4 FB | Feedback input for output regulation | Connect to GND for fixed 3.3V; connect resistive divider (R1/R2) for adjustable output (VOUT = 1.24V × (1 + R1/R2)) |
| 5 OUT | IC power supply input | Supplied from POUT via 4.7Ω series resistor; bypass with 0.68µF ceramic capacitor to GND |
| 6 CLK/SEL | Mode selection & external clock input | Low = auto PFM/PWM; High = forced-PWM; external 500kHz–1.2MHz clock = synchronized PWM |
| 7 PGND | Power ground (N-channel source) | Primary return path for high-current switching; must be low-inductance connection to GND plane |
| 8 LX | Switch node (inductor connection) | Connects to inductor; carries high di/dt; requires short, wide trace and guard ring to minimize EMI |
| 9 POUT | Power output (P-channel source) | Delivers regulated output; connects to output capacitor and load; internal synchronous rectifier source |
| 10 ON | Enable input (active-low) | Logic-low activates regulator; internal hysteresis (~0.15×VOUT) prevents chatter near threshold |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated P-channel MOSFET replaces Schottky diode, improving efficiency by ~5% vs. nonsynchronous designs |
| Idle-Mode™ architecture | Automatically switches between PFM (light load) and PWM (medium/heavy load) without external control |
| Adjustable current limit | ISET pin allows precise reduction of peak inductor current below 1.25A to match smaller inductors or lower ripple |
| Analog soft-start | RC network on ISET controls output voltage ramp rate, preventing inrush current and input voltage sag |
| Low-noise forced-PWM | CLK/SEL = high enables constant 1MHz switching-harmonics are predictable and easily filtered in RF-sensitive systems |
| External clock synchronization | Accepts 500kHz–1.2MHz clock on CLK/SEL to shift switching noise away from critical comms bands (e.g., GSM, Bluetooth) |
Applications
| Digital Cordless Phones | Wireless Handsets |
|---|---|
Use Scenario: Powering RF transceiver and baseband ICs from single NiMH cell (1.2V nominal). IC Role / Device Role / Timing Role: Primary 3.3V system rail generator with fast transient response to burst-mode TX current demands. Use Value: 94% peak efficiency at 200mA extends talk time; 1MHz switching minimizes filter component size in space-constrained handset PCBs. |
Use Scenario: Supplying 3.3V to GPS receiver and Bluetooth module in handheld asset tracker. IC Role / Device Role / Timing Role: Battery-efficient boost converter enabling operation down to 0.9V input during deep discharge. Use Value: 100µA no-load current preserves battery during sleep; synchronized-PWM mode avoids interference with 2.4GHz radio band. |
| Palmtop Computers | Handheld Instruments |
Use Scenario: Generating stable 3.3V for microcontroller and LCD driver from dual alkaline cells (1.5V × 2 = 3.0V). IC Role / Device Role / Timing Role: Main system power supply with analog soft-start to prevent brownout during cold start. Use Value: Adjustable soft-start (via ISET RC) eliminates reset glitches; FB divider allows flexible rail scaling for peripheral voltage requirements. |
Use Scenario: Providing clean 5.0V output for precision ADC and op-amp front-end from single Li+ cell. IC Role / Device Role / Timing Role: Low-noise, regulated boost stage where switching artifacts must not couple into analog signal chain. Use Value: Forced-PWM mode ensures consistent 1MHz harmonics-easily attenuated with small LC filter; <20nA FB input bias maintains divider 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 |
|---|---|---|---|
| TPS61040DRVR | 500kHz max switching frequency; 28V max output; no internal synchronous rectifier (requires external diode) | Lacks forced-PWM and synchronization; higher output voltage capability suits industrial sensors over portable RF | Choose when >5.5V output or wider input range (0.9V–5.5V) is required, and 1MHz noise filtering is not critical |
| LT1930ES5#TRMPBF | 1.2MHz fixed frequency; 600mA max output; no Idle-Mode™ or adjustable current limit | Higher frequency but lower current rating; lacks soft-start control and PFM/PWM auto-transition | Prefer for compact layouts needing >1MHz switching, but accept reduced load capability and fixed soft-start behavior |
Compared with MAX1760EUB, TPS61040DRVR offers broader output voltage range but sacrifices 1MHz low-noise operation and synchronous efficiency, while LT1930ES5#TRMPBF trades programmable current limit and Idle-Mode™ intelligence for slightly higher frequency and simpler control-neither matches the MAX1760EUB's balance of ultra-low quiescent current, adaptive efficiency, and RF-friendly synchronization.
Availability
MAX1760EUB 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 guaranteed traceable sourcing.
Supply support for MAX1760EUB 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) designs high-performance analog and mixed-signal ICs for power management, data conversion, and interface applications.
The MAX1760EUB belongs to Maxim's low-noise, high-efficiency boost converter product line, engineered specifically for battery-powered wireless equipment demanding minimal quiescent current, small solution size, and EMI-controlled operation.
FAQ
What is the minimum input voltage required to start up the MAX1760EUB?
The MAX1760EUB guarantees startup at 1.1V input (typical) and remains operational down to 0.7V once running, thanks to its low-voltage startup oscillator and bootstrapped OUT supply. This enables reliable operation from deeply discharged single-cell batteries. The MAX1760EUB achieves this using an internal CMOS oscillator that initiates switching before the main feedback loop engages.
How does the MAX1760EUB achieve 94% peak efficiency?
The MAX1760EUB reaches 94% peak efficiency at 3.3V output and 200mA load through synchronous rectification (replacing lossy Schottky diodes), low RDS(ON) MOSFETs (0.28Ω N-channel), and optimized 1MHz PWM operation that minimizes switching and conduction losses. The MAX1760EUB's Idle-Mode™ further enhances light-load efficiency by transitioning to PFM.
Can the MAX1760EUB generate output voltages above 4V?
Yes, the MAX1760EUB supports adjustable outputs up to 5.5V via the FB pin resistor divider. However, for outputs >4V, an external 0.5A Schottky diode (e.g., MBR0520L) must be placed in parallel with the internal synchronous rectifier to handle startup and high-voltage reverse recovery. The MAX1760EUB's internal rectifier alone is rated for ≤4V operation.
What is the purpose of the ISET pin on the MAX1760EUB?
The ISET pin on the MAX1760EUB serves dual functions: it sets the N-channel MOSFET current limit (1.25A when tied to REF) and implements analog soft-start via an external RC network. During startup, rising voltage on ISET linearly increases peak inductor current, controlling output voltage ramp rate. The MAX1760EUB discharges ISET to GND internally during shutdown.
How does the MAX1760EUB reduce EMI in sensitive RF applications?
The MAX1760EUB reduces EMI through three mechanisms: forced-PWM mode (constant 1MHz switching with predictable harmonics), external clock synchronization (shifting noise away from critical bands like 2.4GHz), and low-noise layout guidance (short LX traces, guarded feedback paths). These features make the MAX1760EUB suitable for PCS phones and Bluetooth handsets where spectral purity is essential.
MAX1760EUB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm 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:
- 1A (Switch)
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-uMAX/uSOP
MAX1760EUB FAQ
1.How can I place an order for MAX1760EUB through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1760EUB 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 MAX1760EUB reliable?
The price and inventory of MAX1760EUB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1760EUB is usually 5 days.
3.What payment methods are accepted for MAX1760EUB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1760EUB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1760EUB?
MAX1760EUB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1760EUB 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 MAX1760EUB?
For technical support, including MAX1760EUB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1760EUB requirements.
6.How does Aetrix verify that MAX1760EUB is sourced from the original manufacturer or authorized distributors?
All MAX1760EUB 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 MAX1760EUB meets industry standards.
7.What is the process for return or replacement of MAX1760EUB?
All MAX1760EUB units undergo pre-shipment inspection (PSI). If there is an issue with MAX1760EUB, 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 MAX1760EUB part is unused and in its original packaging.
Return procedure for MAX1760EUB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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