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Analog Devices Inc./Maxim Integrated MAX1701EEE
- Part No.:
- MAX1701EEE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX1701EEE.pdf
- Description:
- IC REG BOOST ADJ 1.1A 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,209
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Product details
Overview
MAX1701EEE from Maxim Integrated is a high-efficiency, low-noise synchronous step-up DC-DC converter optimized for single-cell Li-ion or multi-cell NiCd/NiMH battery-powered wireless devices. It delivers up to 800mA output at adjustable 2.5V–5.5V with 1.1V guaranteed start-up, internal 1A/130mΩ N-channel switch and 250mΩ P-channel synchronous rectifier, and operates across –40°C to +85°C in a 16-pin QSOP package.
For engineers reviewing the MAX1701EEE datasheet, MAX1701EEE pinout, MAX1701EEE application, or MAX1701EEE equivalent, this page provides verified functional identity, validated pin roles (including LBO, POK, AIN, AO), confirmed dual-mode PWM/PFM operation, and real-world design implications of its 3µA shutdown, 1.25V reference, and uncommitted gain block - all critical for RF-sensitive portable power designs.
Technical Context
The MAX1701EEE implements a synchronous-rectified PWM/PFM boost topology with an internal 300kHz oscillator (adjustable via external clock 200–400kHz) and dual shutdown control (ONA/ONB). Its control architecture includes slope-compensated current-mode PWM with 1.6A peak inductor current limit and discontinuous-conduction PFM mode delivering up to 100mA at <200µW quiescent power.
It integrates a 1.25V ±1% bandgap reference, power-good comparator (POK, open-drain, trips at –10% VOUT), low-battery comparator (LBN/LBP, 15mV hysteresis, 0.5–1.5V common-mode range), and transconductance gain block (9mmho, AO open-drain) - all co-located on-die with the regulator core and sharing the same 16-pin QSOP footprint as the MAX1700EEE.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.7V to 5.5V - supports operation down to 0.7V after start-up; 1.1V minimum required to initiate regulation |
| Output Voltage Range | 2.5V to 5.5V adjustable - set via external FB resistor divider; fixed 3.3V option by grounding FB |
| Max Output Current | 800mA in PWM mode - limited by 1.6A N-channel switch current limit and thermal dissipation in 16-QSOP |
| Efficiency | Up to 96% - enabled by synchronous rectification (5% gain vs. non-synchronous), PWM/PFM mode selection, and low RDS(ON) switches |
| Shutdown Current | 3µA - achieved with logic-controlled ONA/ONB inputs; reduces battery drain during system sleep |
| Oscillator Frequency | 300kHz internal (±40kHz over temp); externally synchronizable 200–400kHz - enables IF-band noise avoidance in GSM/PCS radios |
| Reference Voltage | 1.250V ±1% - stable bandgap reference used for FB regulation, LBN/LBP thresholding, and gain-block biasing |
Pinout & Package
MAX1701EEE is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.65mm pitch), pin-compatible with MAX1700EEE and occupying the same PCB area as an 8-pin SOIC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LBP | Low-battery comparator non-inverting input | Accepts external voltage divider for battery monitoring; 15mV hysteresis prevents chatter near trip point |
| LBN | Low-battery comparator inverting input | Connected to REF (1.25V) or divider node; common-mode range 0.5V–1.5V ensures robust sensing |
| REF | Precision 1.25V bandgap reference output | Sources ≤50µA; requires 0.22µF bypass within 5mm for stability and noise immunity |
| CLK/SEL | Mode selection and external clock sync input | Low = PFM (100mA, low IQ); High = PWM (800mA, 300kHz); External clock = synchronized PWM |
| POK | Power-good open-drain output | Pulled low when VOUT drops >10% below regulation - used for system reset or enable sequencing |
| LBO | Low-battery open-drain output | Sinks ≥1mA; asserts low when LBN > LBP - drives LED, microcontroller interrupt, or load disconnect |
| AIN / AO | Gain block inverting input / open-drain output | Transconductance = 9mmho; AO sinks when AIN < REF - enables linear regulator or arbitrary voltage monitor |
| FB | Feedback input for output voltage regulation | Regulates to 1.23V typical; connects to resistor divider from OUT to GND for adjustable output |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated 250mΩ P-channel switch improves efficiency by 5% vs. diode-based boost, reducing heat and extending battery life |
| Dual-mode PWM/PFM control | Automatic transition between constant-frequency PWM (full load) and variable-frequency PFM (light load) maximizes efficiency across operating range |
| Logic-controlled dual shutdown | Independent ONA and ONB inputs support momentary pushbutton + microprocessor control without external logic |
| Uncommitted gain block | Configurable as third comparator or linear regulator driver (with external PFET) - adds system-level flexibility without extra ICs |
| Low-voltage start-up oscillator | Guaranteed 1.1V start-up at +25°C enables operation from deeply discharged batteries; sustains regulation down to 0.7V |
Applications
| Digital Cordless Phones | Personal Communicators |
|---|---|
Use Scenario: Powering RF front-end and baseband ICs from single Li-ion cell with strict EMI limits. IC Role / Device Role / Timing Role: Primary step-up regulator supplying clean, low-noise 3.3V/5V to transceiver and DSP under dynamic load. Use Value: Synchronized PWM mode avoids IF interference; 3µA shutdown extends standby time; POK ensures safe boot sequencing. |
Use Scenario: Enabling compact form factor in handheld two-way messaging devices with multi-voltage rails. IC Role / Device Role / Timing Role: Generates adjustable 2.5V–5.5V output for display backlight, memory, and sensor interface from 1–3 NiMH cells. Use Value: 1.1V start-up supports full functionality even after deep discharge; gain block replaces discrete op-amp for battery gauge. |
| PCS Handsets | Palmtop Computers |
Use Scenario: Delivering stable 3.3V to baseband processor and audio codec while minimizing conducted emissions. IC Role / Device Role / Timing Role: Low-noise PWM regulator with external clock sync to align switching harmonics away from receive bands. Use Value: 96% peak efficiency reduces thermal load in sealed enclosure; LBO triggers low-battery alert before system brownout. |
Use Scenario: Providing regulated 5V for USB peripherals and 3.3V for CPU/memory from shared battery rail. IC Role / Device Role / Timing Role: Dual-rail capable boost converter using FB and gain block to generate secondary regulated output. Use Value: Adjustable output eliminates need for second LDO; REF and POK simplify power management firmware integration. |
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 |
|---|---|---|---|
| MAX1700EEE | Lacks LBO, POK, AIN/AO gain block; identical DC-DC core, pinout, and electrical specs otherwise | Suitable only where low-battery detection and auxiliary analog functions are unnecessary | Select MAX1700EEE for cost-sensitive, functionally minimal boost-only designs |
| TPS61040DRBT | Higher 28V max input, no integrated P-channel rectifier, no POK/LBO comparators, 5-pin SOT-23 package | Targeted at ultra-compact space-constrained applications without system monitoring requirements | Choose TPS61040DRBT when board area is critical and auxiliary comparators are omitted from system architecture |
Compared with MAX1700EEE, the MAX1701EEE adds system-level monitoring capability without increasing footprint; versus TPS61040DRBT, it trades package size for integrated analog functions that reduce BOM count and improve noise immunity in RF-critical designs.
Availability
MAX1701EEE is available at Aetrix Electronics and suitable for digital cordless phones, personal communicators, and PCS handsets requiring stable component supply, long-term lifecycle support, and guaranteed –40°C to +85°C operation.
Supply support for MAX1701EEE 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 solutions for portable, industrial, and communications systems.
The MAX1700/MAX1701 product line was designed specifically for battery-powered wireless equipment demanding high efficiency, low EMI, and integrated system monitoring - enabling compact, reliable power architectures in RF-sensitive applications.
FAQ
What is the guaranteed minimum input voltage to start regulation for MAX1701EEE?
The MAX1701EEE guarantees start-up regulation from 1.1V input at +25°C, per datasheet Absolute Maximum Ratings and Typical Operating Characteristics. Once started, it continues regulating down to 0.7V due to bootstrap powering from the OUT pin. This behavior is confirmed across the full –40°C to +85°C temperature range, though start-up voltage increases slightly at temperature extremes (e.g., 0.79V at +25°C, 0.64V at +85°C).
How does the MAX1701EEE achieve 96% peak efficiency?
The MAX1701EEE achieves up to 96% peak efficiency through synchronous rectification (replacing lossy Schottky diodes with a 250mΩ internal P-channel MOSFET), low RDS(ON) power switches (130mΩ N-channel), and optimized PWM control that minimizes switching and conduction losses. Measured data shows 90–96% efficiency across 10mA–800mA loads at 3.3V output with 1.2V–2.4V input, as documented in the Typical Operating Characteristics section.
Can the MAX1701EEE be used to generate a second regulated output?
Yes - the MAX1701EEE's uncommitted gain block (AIN/AO) and 1.25V reference enable construction of a secondary linear regulator. By connecting an external P-channel MOSFET between POUT and the desired output rail, and feeding back that rail to AIN, the AO output drives the PFET gate to regulate the secondary voltage. The datasheet provides design equations and layout guidance for this configuration in the "Gain Block" and "Design Procedure" sections.
What is the function of the POK pin on the MAX1701EEE?
The POK (Power-OK) pin on the MAX1701EEE is an open-drain N-channel output that pulls low when the regulated output voltage falls more than 10% below its nominal value (e.g., below 2.97V for a 3.3V output). It has no internal delay and is intended for system-level power sequencing, reset assertion, or supervisor IC interfacing - a feature absent in the pin-compatible MAX1700EEE.
Is the MAX1701EEE pin-compatible with the MAX1700EEE?
Yes - the MAX1701EEE and MAX1700EEE share identical 16-pin QSOP packaging, pin assignments, DC-DC converter core, and electrical specifications for switching operation, input/output ranges, and thermal limits. The MAX1701EEE adds functional pins (LBP, LBN, POK, AIN, AO) that are NC (no-connect) or internally unused on the MAX1700EEE, making MAX1701EEE a drop-in upgrade where enhanced monitoring is required.
MAX1701EEE 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
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.2V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1.1A (Switch)
- Frequency - Switching:
- 300kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
MAX1701EEE FAQ
1.How can I place an order for MAX1701EEE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1701EEE 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 MAX1701EEE reliable?
The price and inventory of MAX1701EEE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1701EEE is usually 5 days.
3.What payment methods are accepted for MAX1701EEE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1701EEE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1701EEE?
MAX1701EEE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1701EEE 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 MAX1701EEE?
For technical support, including MAX1701EEE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1701EEE requirements.
6.How does Aetrix verify that MAX1701EEE is sourced from the original manufacturer or authorized distributors?
All MAX1701EEE 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 MAX1701EEE meets industry standards.
7.What is the process for return or replacement of MAX1701EEE?
All MAX1701EEE units undergo pre-shipment inspection (PSI). If there is an issue with MAX1701EEE, 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 MAX1701EEE part is unused and in its original packaging.
Return procedure for MAX1701EEE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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