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Analog Devices Inc./Maxim Integrated MAX17290ETCD+T
- Part No.:
- MAX17290ETCD+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFQFN Exposed Pad
- Datasheet:
-
MAX17290ETCD+T.pdf
- Description:
- IC REG BOOST ADJ 1A 12TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,809
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Product details
Overview
MAX17290ETCD+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, 5V internal PVL regulator, and integrated slope compensation. It is used in telecom power supplies and distributed point-of-load regulation where transient robustness and compact all-ceramic design are critical.
For engineers reviewing the MAX17290ETCD+T datasheet, MAX17290ETCD+T pinout, MAX17290ETCD+T application, or MAX17290ETCD+T equivalent, key selection considerations include its 1MHz–2.5MHz programmable switching range, 42V input transient protection, OVP-enabled overvoltage safety, and compatibility with logic-level nMOSFETs driven by its 750mA/1A peak gate driver.
Technical Context
The MAX17290ETCD+T implements constant-frequency peak current-mode control with programmable slope compensation to stabilize operation above 50% duty cycle. Its internal 5V PVL regulator powers the gate driver and enables direct operation from automotive battery inputs, while the FSET/SYNC pin supports both resistor-based frequency setting (1MHz–2.5MHz) and external clock synchronization.
This variant (ETCD) is a TQFN-12 package version with OVP and REFIN pins enabled, supporting 180° out-of-phase multiphase operation via SYNCO and hiccup-mode short-circuit protection triggered after 16 consecutive current-limit events. It integrates thermal shutdown at 165°C and spread-spectrum modulation (±6%) to reduce EMI peaks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V–36V continuous; extends to 2.5V in bootstrapped mode - enables use with partially discharged batteries or low-VIN preboost stages. |
| Switching Frequency | 1MHz–2.5MHz (set via FSET/SYNC resistor) - allows optimization of size vs. efficiency and EMI filtering requirements. |
| Shutdown Current | 4µA typical - minimizes system standby power loss in always-on or battery-backed applications. |
| PVL Regulator Output | 5V ±5%, 10mA capable - powers external gate drivers and logic without auxiliary supply. |
| OVP Threshold Accuracy | 110% ±2.5% of FB voltage - provides precise overvoltage protection when configured with external resistor divider. |
| Peak Gate Drive Current | 750mA source / 1A sink - drives logic-level nMOSFETs with fast turn-on/turn-off, reducing conduction losses. |
| Thermal Shutdown | 165°C with 10°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
The MAX17290ETCD+T is housed in a 3mm × 3mm, 12-pin TQFN-EP package with exposed pad thermally connected to GND. The package supports high-power density layouts and requires connection of the EP pad to a large ground plane for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SUP | Power-supply input | Accepts 4.5V–36V input; bypass capacitor ≥1µF required between SUP and GND for stability. |
| EN | Active-high enable | High-voltage tolerant (up to +42V); enables/disables converter with <4µA shutdown quiescent current. |
| GND | Ground reference | Common return for analog and power sections; connects internally to exposed pad. |
| DRV | nMOSFET gate driver output | Swings between PVL (~5V) and GND; delivers 750mA peak source / 1A peak sink current. |
| PVL | 5V internal regulator output | Supplies gate drive and external circuitry; requires ≥2.2µF ceramic capacitor close to pin. |
| ISNS | Current-sense input | Monitors voltage across external sense resistor; 250mV threshold triggers current limiting. |
| OVP | Overvoltage protection input | Disables switching when voltage exceeds 110% of FB; resumes at 107.5% - enables precise output fault detection. |
| REFIN | Reference input | Accepts 0.5V–2V external voltage to dynamically adjust output voltage; tied to PVL for fixed 1V FB reference. |
| PGOOD | Open-drain power-good indicator | Asserts high after soft-start when output reaches >90% of target; signals fault after 16 current-limit cycles. |
| FSET/SYNC | Frequency set/synchronization input | Configures switching frequency (1–2.5MHz) or accepts external sync signal (1–2.5MHz) with 70ns minimum pulse width. |
| COMP | Error amplifier output | Connects to RC compensation network between COMP and GND to stabilize loop response. |
| FB | Feedback input | Regulated to 1V (when REFIN = PVL) or to REFIN value; sets output voltage via resistor divider from VOUT. |
Key Features
| Feature | Design Value |
|---|---|
| All-ceramic capacitor support | Enables ultra-compact, low-profile designs without electrolytic capacitors - improves reliability and lifetime in harsh environments. |
| Bootstrapped low-VIN operation | Extends functional input range down to 2.5V when output supplies SUP - ideal for battery-powered systems with deep discharge tolerance. |
| Spread-spectrum modulation (±6%) | Reduces EMI peak amplitudes at fundamental and harmonics - simplifies compliance testing and filter design in noise-sensitive systems. |
| Programmable slope compensation | Stabilizes current-mode control at high duty cycles using single external resistor - eliminates subharmonic oscillation without complex compensation. |
| Hiccup-mode short-circuit protection | Enters 44ms recovery delay after 16 consecutive current-limit events - protects MOSFET and inductor from thermal runaway during sustained faults. |
Applications
| Telecom Power Supply | Distributed Point-of-Load Regulation |
|---|---|
Use Scenario: Boosting 12V or 24V intermediate bus to 48V for PoE++ or remote radio units in outdoor base stations. IC Role / Device Role / Timing Role: Primary PWM controller managing synchronous boost stage with 42V transient immunity and spread-spectrum EMI reduction. Use Value: Enables compact, fanless telecom hardware meeting IEC 61000-4-5 surge immunity and CISPR 32 Class B emissions limits. |
Use Scenario: Generating stable 5V or 12V rails from variable 3.3V–24V sources in modular industrial PLC I/O modules. IC Role / Device Role / Timing Role: High-efficiency, wide-input boost controller delivering regulated output with PGOOD signaling for system health monitoring. Use Value: Supports hot-swap capability and brownout resilience via 2.5V bootstrapped operation and 9ms soft-start ramp. |
| Automotive Front-End Preboost | LED Lighting Driver Supply |
Use Scenario: Preboosting 9V–16V automotive battery to 24V for downstream buck converters powering ADAS sensors or infotainment displays. IC Role / Device Role / Timing Role: Input-transient-hardened boost controller with OVP and thermal shutdown - ensures safe operation during load-dump events. Use Value: Eliminates need for external TVS clamping and reduces BOM count while maintaining AEC-Q100-compliant system margins. |
Use Scenario: Providing constant-current LED string supply from 12V vehicle battery or 24V industrial rail in architectural lighting fixtures. IC Role / Device Role / Timing Role: High-frequency (2.2MHz) boost controller enabling small inductors and ceramic-only output filtering for silent, compact drivers. Use Value: Achieves >90% peak efficiency at 2A load and reduces audible noise by operating beyond human hearing range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17292ETCD+T | Same pinout and feature set, but supports 1MHz–2.5MHz range (vs. MAX17290's 100kHz–1MHz); higher max frequency enables smaller magnetics. | Better suited for space-constrained designs requiring >1MHz operation; not drop-in compatible due to different oscillator range and internal timing. | Select MAX17292ETCD+T when board layout targets >1.2MHz switching; verify FSET resistor and slope compensation values per datasheet Table 1. |
| LM5122MMX/NOPB | Wider input range (3V–65V), no integrated PVL regulator, requires external bias supply; supports adjustable current limit and external clock sync. | Preferred for ultra-wide VIN applications (e.g., 48V telecom rectifiers) where internal 5V regulator is unnecessary or undesirable. | Choose LM5122MMX/NOPB when input exceeds 36V or when external bias control is needed; note missing PVL simplifies supply but adds complexity. |
Compared with MAX17292ETCD+T and LM5122MMX/NOPB, the MAX17290ETCD+T offers integrated 5V bias, lower quiescent current (4µA vs. ~10µA), and optimized EMI performance via spread-spectrum - making it ideal for cost-sensitive, space-constrained 12V/24V industrial boost designs.
Availability
MAX17290ETCD+T is available at Aetrix Electronics and suitable for telecom hardware, automotive front-end preboost, and distributed point-of-load regulation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX17290ETCD+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 precision analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX17290/MAX17292 product line targets high-reliability, wide-input boost conversion in harsh environments - emphasizing transient robustness, compact all-ceramic solutions, and integrated protection features like OVP and hiccup mode.
FAQ
What is the maximum input voltage transient rating for the MAX17290ETCD+T?
The MAX17290ETCD+T provides 42V input transient protection on the SUP pin, meaning it can withstand brief voltage spikes up to 42V without damage or latch-up. This rating applies under absolute maximum conditions and is distinct from continuous operating range (4.5V–36V). Operation above 36V must be limited in duration and energy to avoid exceeding junction temperature limits or degrading long-term reliability. The 42V rating supports robustness against automotive load-dump transients and industrial line surges.
Does the MAX17290ETCD+T support external synchronization, and what are the valid frequency ranges?
Yes, the MAX17290ETCD+T supports external synchronization via the FSET/SYNC pin, accepting logic-level clock signals from 220kHz to 1000kHz. When synchronized, the device aligns its switching edge to the falling edge of the external clock with a 60ns–125ns delay depending on frequency. This capability enables multi-phase interleaving and EMI reduction through clock dithering. The internal oscillator remains disabled during external sync, and spread-spectrum modulation is inactive.
How does the OVP function work on the MAX17290ETCD+T, and is it present in this variant?
Yes, the MAX17290ETCD+T includes the OVP pin (pin 7 in TQFN-12). When the OVP pin voltage exceeds 110% of the FB regulation voltage (e.g., >1.1V if FB is regulated to 1V), the controller disables switching immediately. Operation resumes only after OVP falls below 107.5% of the FB voltage, providing hysteresis to prevent chatter. This function is implemented in C/D/F versions like ETCD+T and requires an external resistor divider from VOUT to GND to set the trip point.
What is the purpose of the REFIN pin on the MAX17290ETCD+T, and how is it used?
The REFIN pin on the MAX17290ETCD+T allows dynamic adjustment of the feedback reference voltage between 0.5V and 2V, enabling real-time output voltage control without changing the FB resistor divider. When REFIN is tied to PVL (5V), the FB pin regulates to 1V. When driven externally (e.g., by DAC or microcontroller), the output voltage scales linearly with REFIN - e.g., 2V on REFIN yields double the output voltage set by the same resistor divider. This supports adaptive power management and programmable rail generation.
Can the MAX17290ETCD+T operate with an input voltage below 4.5V, and what conditions apply?
Yes, the MAX17290ETCD+T can operate with input as low as 2.5V in bootstrapped mode, where the output supplies the SUP pin. In this configuration, the internal PVL regulator sustains DRV gate drive and internal circuitry once startup is complete. However, bootstrapped operation requires careful design: the output must reach sufficient voltage before SUP drops below UVLO threshold (3.8V), and the soft-start time (9ms) must accommodate the slower ramp. It is not supported in standard 4.5V–36V direct-SUP operation.
MAX17290ETCD+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 12-TQFN (3x3)
MAX17290ETCD+T FAQ
1.How can I place an order for MAX17290ETCD+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17290ETCD+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 MAX17290ETCD+T reliable?
The price and inventory of MAX17290ETCD+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17290ETCD+T is usually 5 days.
3.What payment methods are accepted for MAX17290ETCD+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17290ETCD+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17290ETCD+T?
MAX17290ETCD+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17290ETCD+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 MAX17290ETCD+T?
For technical support, including MAX17290ETCD+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17290ETCD+T requirements.
6.How does Aetrix verify that MAX17290ETCD+T is sourced from the original manufacturer or authorized distributors?
All MAX17290ETCD+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 MAX17290ETCD+T meets industry standards.
7.What is the process for return or replacement of MAX17290ETCD+T?
All MAX17290ETCD+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17290ETCD+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 MAX17290ETCD+T part is unused and in its original packaging.
Return procedure for MAX17290ETCD+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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