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Analog Devices Inc./Maxim Integrated MAX17290EUBA+T
- Part No.:
- MAX17290EUBA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MAX17290EUBA+T.pdf
- Description:
- IC REG BOOST ADJ 1A 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,421
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Product details
Overview
MAX17290EUBA+T from Maxim Integrated is a high-efficiency, synchronous step-up DC-DC controller optimized for wide-input industrial and automotive boost applications. It operates from 4.5V to 36V input (extendable to 2.5V in bootstrapped mode), delivers up to 2.5MHz switching frequency, features 4µA shutdown current, integrated 5V PVL regulator, and 42V input transient protection. It serves as the core PWM control IC in preboost stages for LED drivers and telecom power supplies.
For engineers reviewing the MAX17290EUBA+T datasheet, MAX17290EUBA+T pinout, MAX17290EUBA+T application, or MAX17290EUBA+T equivalent, key selection criteria include its 100kHz–1MHz programmable switching frequency range, peak current-mode architecture with adjustable slope compensation, 9ms internal soft-start, hiccup-mode overcurrent protection, and compatibility with logic-level nMOSFETs driven by its 5V PVL-regulated DRV output.
Technical Context
The MAX17290EUBA+T implements constant-frequency, peak current-mode PWM control with an internal transconductance error amplifier (700µS gm, 50MΩ output impedance) and 1V FB reference accuracy of ±1%. Its oscillator supports resistor-programmed frequencies from 100kHz to 1MHz (RFSET = 69kΩ yields ~400kHz), with external synchronization capability via FSET/SYNC input.
It integrates a 5V/100mA low-dropout PVL regulator for gate drive and biasing, enabling direct operation from automotive battery inputs. Protection includes 42V input transient tolerance, thermal shutdown at 165°C, hiccup mode triggered after 16 consecutive current-limit cycles, and PGOOD monitoring with 85–95% rising/falling thresholds relative to final output voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 36V continuous; extends to 2.5V when bootstrapped - enables operation from partially discharged batteries or post-regulated rails. |
| Switching Frequency | 100kHz to 1MHz (resistor-programmable); supports external sync up to 1MHz - balances efficiency, size, and EMI in compact designs. |
| Shutdown Current | 4µA typical - minimizes system standby power loss in always-on or battery-backed applications. |
| PVL Regulator Output | 4.7V to 5.45V at 10mA - powers external MOSFET gate and internal circuitry; eliminates need for auxiliary bias supply. |
| FB Regulation Accuracy | ±1% (0.99V to 1.01V) across line, load, and temperature - ensures stable output voltage under varying conditions without trimming. |
| ISNS Current Limit Threshold | 212mV to 288mV - sets precise overcurrent protection point; compatible with standard sense resistors for accurate peak-current limiting. |
| Thermal Shutdown | 165°C with 10°C hysteresis - prevents permanent damage during overload or poor heatsinking; allows safe recovery after cooling. |
Pinout & Package
MAX17290EUBA+T is housed in a 10-pin µMAX-EP package (3mm × 3mm, 0.8mm height) with exposed pad thermally connected to GND. The package supports high-power density layouts and requires PCB thermal vias under the EP for optimal junction-to-ambient thermal performance (78°C/W on 4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Feedback Input | Regulated to 1V (when REFIN = PVL); connects to resistor divider from output - sets output voltage with ±1% accuracy. |
| 2 COMP | Error Amplifier Output | Drives external compensation network (RC/Zener) - determines loop stability, bandwidth, and transient response. |
| 3 FSET/SYNC | Frequency Set / Sync Input | Resistor-to-GND sets oscillator frequency; external clock signal synchronizes switching - enables multi-phase or noise-sensitive timing. |
| 4 PGOOD | Open-Drain Power-Good Output | Asserts high after soft-start when output reaches ≥90% target - signals system controller that rail is valid and stable. |
| 5 DRV | nMOS Gate Driver Output | Swings between PVL and GND; sources 750mA/sinks 1000mA peak - directly drives logic-level nMOSFETs without external driver. |
| 6 GND | Power & Signal Ground | Main return path for ISNS, PVL, SUP, and DRV - must be low-impedance and tied to EP for thermal and noise integrity. |
| 7 EN | Active-High Enable Input | High-voltage tolerant (to +42V); enables converter when >1.7V - provides robust ON/OFF control from microcontroller or supervisor IC. |
| 8 SUP | Power-Supply Input | Accepts 4.5V–36V input; bypassed with ≥1µF ceramic capacitor - powers internal circuitry and PVL regulator. |
| 9 ISNS | Current-Sense Input | Monitors voltage across external sense resistor; 250mV threshold triggers cycle termination - enables accurate peak-current limiting. |
| 10 PVL | 5V Internal Regulator Output | Supplies DRV and internal logic; requires ≥2.2µF ceramic capacitor - eliminates need for external bias supply and simplifies BOM. |
Key Features
| Feature | Design Value |
|---|---|
| All-ceramic capacitor support | Enables ultra-compact, low-ESR, high-reliability output filtering - reduces solution footprint and eliminates aluminum electrolytic aging concerns. |
| Bootstrapped mode operation | Extends functional input range down to 2.5V - allows use in battery-powered systems where input drops below nominal 4.5V minimum. |
| Adjustable slope compensation | Programmable via single resistor on ISNS - stabilizes current loop above 50% duty cycle and prevents subharmonic oscillation. |
| Spread-spectrum modulation (B/D/F versions) | ±6% frequency dithering - reduces EMI peak amplitudes without altering average switching frequency or control loop behavior. |
| Fixed 9ms internal soft-start | Linear ramp of internal reference - limits inrush current during startup and avoids output overshoot or input rail collapse. |
Applications
| Automotive Preboost Stage | Telecom Point-of-Load Boost |
|---|---|
|
Use Scenario: Front-end boost stage supplying 12V/24V rail from variable automotive battery (6V–16V) to power downstream DC-DC converters and LED drivers. IC Role / Device Role / Timing Role: Primary PWM controller regulating boost output; manages gate drive, current sensing, and fault signaling via PGOOD and hiccup mode. Use Value: 42V transient protection withstands load-dump events; PVL regulator enables direct battery connection; 4µA shutdown preserves battery life during vehicle sleep mode. |
Use Scenario: Intermediate boost converter generating 48V from 24V telecom shelf supply to feed isolated DC-DC modules in base station power distribution. IC Role / Device Role / Timing Role: High-frequency (2.2MHz) synchronous boost controller with external MOSFET drive and precision current limit. Use Value: 1MHz+ switching enables small magnetics and ceramics; hiccup mode protects against short-circuited downstream modules; SYNC input allows interleaving with adjacent converters. |
| Industrial Distributed Supply | LED Lighting Front-End |
|
Use Scenario: Local 24V-to-48V boost for fieldbus I/O modules requiring isolated 48V power in factory automation systems. IC Role / Device Role / Timing Role: Constant-frequency peak current-mode controller managing output regulation, thermal safety, and power-good sequencing. Use Value: -40°C to +85°C operation ensures reliability in uncontrolled environments; 9ms soft-start prevents brownout on shared 24V bus; PVL powers local logic and sensors. |
Use Scenario: Preboost stage feeding high-current LED strings from 12V/24V input in architectural or street lighting fixtures. IC Role / Device Role / Timing Role: High-efficiency (>90% peak) boost controller driving external nMOSFET with 5V PVL-regulated gate drive. Use Value: Adjustable slope compensation maintains stability across wide dimming range; OVP pin (in C/D variants) adds secondary overvoltage protection for LED open-circuit faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17292EUBA+T | Higher switching frequency range (1MHz–2.5MHz); same pinout and package - requires different RFSET resistor value (12.1kΩ vs. 69kΩ for 400kHz). | Preferred for ultra-compact designs needing smaller inductors/capacitors; less suitable for low-EMI or high-efficiency-at-light-load scenarios. | Select MAX17292EUBA+T when board space is constrained and higher-frequency operation is acceptable; verify thermal performance at 2.2MHz. |
| LM5122MMX/NOPB | Wider input range (3V–65V); integrated high-side gate driver; no internal PVL regulator - requires external 5V bias for gate drive. | Used in higher-voltage industrial or solar applications; lacks bootstrapped mode and fixed soft-start time. | Choose LM5122MMX/NOPB for >36V input requirements or when integrated high-side driver is preferred; add external LDO for gate bias if PVL not available. |
Compared with MAX17290EUBA+T, MAX17292EUBA+T offers higher-frequency operation at the cost of reduced light-load efficiency, while LM5122MMX/NOPB trades internal bias integration for broader input voltage coverage and higher maximum voltage rating - both require layout and compensation adjustments.
Availability
MAX17290EUBA+T is available at Aetrix Electronics and suitable for automotive preboost, telecom point-of-load, and industrial distributed supply applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX17290EUBA+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, designs high-performance analog and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX17290/MAX17292 product line targets high-efficiency, wide-input synchronous boost controllers with integrated bias regulation and robust protection - specifically engineered for harsh-environment front-end power conversion where reliability and compactness are critical.
FAQ
What is the input voltage range supported by the MAX17290EUBA+T?
The MAX17290EUBA+T supports a continuous input voltage range of 4.5V to 36V, with transient tolerance up to 42V. In bootstrapped mode - where the output supplies the SUP pin - it can operate down to 2.5V. This dual-range capability makes the MAX17290EUBA+T suitable for automotive battery inputs and battery-backed industrial systems where voltage sags occur.
Does the MAX17290EUBA+T include an internal voltage regulator?
Yes, the MAX17290EUBA+T integrates a 5V low-dropout regulator (PVL) delivering up to 100mA. Its output (4.7V–5.45V) powers the internal circuitry and the DRV gate driver, eliminating the need for an external bias supply. A minimum 2.2µF ceramic capacitor must be placed close to the PVL pin for stability and noise suppression.
How does the MAX17290EUBA+T implement overcurrent protection?
The MAX17290EUBA+T uses peak current-mode control with a fixed 250mV ISNS threshold to terminate each switching cycle when sensed current exceeds the limit. If 16 consecutive current-limit events occur while PGOOD is low, the device enters hiccup mode - halting switching for 44ms before restarting soft-start - protecting external MOSFETs and inductors during sustained overload or short-circuit conditions.
Can the MAX17290EUBA+T be synchronized to an external clock?
Yes, the MAX17290EUBA+T supports external synchronization via the FSET/SYNC pin. An external logic-level clock signal (220kHz–1000kHz) can be applied to align switching edges across multiple converters. When synchronized, the internal oscillator is disabled, and the external clock directly controls phase and frequency - enabling interleaved operation and EMI reduction in multi-rail systems.
What package type and thermal characteristics apply to the MAX17290EUBA+T?
The MAX17290EUBA+T uses a 10-pin µMAX-EP package (3mm × 3mm) with an exposed pad internally connected to GND. On a 4-layer PCB, its junction-to-ambient thermal resistance is 78°C/W, and junction-to-case is 5°C/W. Proper thermal design - including soldering the EP to a large ground plane with ≥6 thermal vias - is essential to maintain junction temperature below 150°C under full load.
MAX17290EUBA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- Frequency - Switching:
- 100kHz ~ 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-uMAX-EP
MAX17290EUBA+T FAQ
1.How can I place an order for MAX17290EUBA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17290EUBA+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 MAX17290EUBA+T reliable?
The price and inventory of MAX17290EUBA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17290EUBA+T is usually 5 days.
3.What payment methods are accepted for MAX17290EUBA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17290EUBA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17290EUBA+T?
MAX17290EUBA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17290EUBA+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 MAX17290EUBA+T?
For technical support, including MAX17290EUBA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17290EUBA+T requirements.
6.How does Aetrix verify that MAX17290EUBA+T is sourced from the original manufacturer or authorized distributors?
All MAX17290EUBA+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 MAX17290EUBA+T meets industry standards.
7.What is the process for return or replacement of MAX17290EUBA+T?
All MAX17290EUBA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17290EUBA+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 MAX17290EUBA+T part is unused and in its original packaging.
Return procedure for MAX17290EUBA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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