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Analog Devices Inc./Maxim Integrated MAX17244ETESA+T
- Part No.:
- MAX17244ETESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX17244ETESA+T.pdf
- Description:
- IC REG BCK PROG/1V 2.5A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,520
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Product details
Overview
The MAX17244ETESA+T from Maxim Integrated is a 3.5V–36V input, 2.5A synchronous step-down DC-DC converter with integrated high-side and low-side MOSFETs, fixed 5V/3.3V or adjustable 1V–10V output, 28µA quiescent current, and 42V transient protection. It operates in PWM or PFM mode and supports external synchronization for EMI-sensitive RF power supplies.
For engineers reviewing the MAX17244ETESA+T datasheet, MAX17244ETESA+T pinout, MAX17244ETESA+T application, or MAX17244ETESA+T equivalent, key selection criteria include input transient tolerance (42V), light-load efficiency optimization (PFM/FPWM mode select via FSYNC), 98% max duty cycle for dropout operation, and spread-spectrum capability for EMI reduction.
Technical Context
The MAX17244ETESA+T uses current-mode control with resistor-programmable switching frequency (220kHz–2.2MHz) and supports external clock synchronization via FSYNC. Its dual supply inputs (SUP/SUPSW) enable robust operation across automotive cold-crank and industrial wide-input conditions.
It integrates a 5V BIAS linear regulator, open-drain PGOOD output with ±3% hysteresis, and 180° out-of-phase SYNCOUT for cascaded multi-rail designs. Protection includes cycle-by-cycle current limiting, thermal shutdown with 15°C hysteresis, and overvoltage protection at 105% VFB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V - supports automotive battery (9V–16V) and industrial 24V systems with 42V transient tolerance. |
| Output Current | 2.5A continuous - delivers full rated load without derating at +70°C ambient in TQFN package. |
| Quiescent Current | 28µA typical - enables always-on subsystems with minimal standby power loss. |
| Switching Frequency | 220kHz to 2.2MHz - adjustable via FOSC resistor; higher frequencies reduce inductor/capacitor size but increase switching losses. |
| Output Voltage Accuracy | ±2% for fixed 5V/3.3V - ensures reliable logic-level rail regulation without external trimming. |
| Duty Cycle Max | 98% - sustains regulation during severe input undervoltage (e.g., cold crank to 3.5V with 5V output). |
| Thermal Shutdown | +175°C with 15°C hysteresis - provides self-recovery protection under sustained overload or poor heatsinking. |
Pinout & Package
MAX17244ETESA+T is housed in a 16-pin 5mm × 5mm TQFN package with exposed pad (EP), optimized for thermal dissipation and compact layout. The EP must be soldered to a large contiguous PGND copper plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SYNCOUT (Pin 14) | Open-drain clock output | Provides 180° out-of-phase signal relative to internal oscillator; used to cascade multiple converters for interleaved operation and reduced input ripple. |
| FSYNC (Pin 2) | Mode-select logic input | Drives high or tied to BIAS for forced-PWM (FPWM); grounded for PFM - enables EMI-optimized light-load operation or fixed-frequency stability for RF supplies. |
| FOSC (Pin 3) | Frequency-setting resistor node | Connects to AGND via resistor (e.g., 12kΩ for 2.2MHz); sets switching frequency and enables external sync when driven by clock source. |
| FB (Pin 5) | Voltage feedback input | Monitors output via resistive divider; regulates to 1.0V reference - supports precise 1V–10V programmability or direct tie to BIAS for fixed 5V/3.3V. |
| PGOOD (Pin 16) | Open-drain power-good flag | Asserts high when VOUT ≥ 95% of regulation; deasserts at ≤ 92% - simplifies power sequencing and system fault detection. |
| EN (Pin 10) | High-voltage enable input | Compatible with 3.5V–42V logic; activates internal bias regulator and soft-start - allows direct connection to KL30 or CAN transceiver INH pins. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high- and low-side MOSFETs | Eliminates external switches and reduces BOM count; RON_H = 220mΩ (max), RON_L = 3Ω (max) enable >90% peak efficiency. |
| All-ceramic capacitor support | Enables ultra-compact PCB footprint using only MLCCs on input/output - no electrolytics required for stability. |
| Automatic LX slew-rate adjustment | Optimizes EMI by setting 4ns rise time at fSW > 1.1MHz and 8ns at lower frequencies - no manual gate resistor tuning needed. |
| Spread-spectrum modulation (factory-enabled) | Reduces peak EMI by ±6% frequency dithering centered on fOSC - improves EMC compliance without external components. |
| Power-good and sync outputs | PGOOD simplifies sequencing; SYNCOUT enables phase-shifted multi-converter designs - critical for high-power distributed supplies. |
Applications
| Automotive Infotainment Power | Industrial IoT Sensor Node |
|---|---|
Use Scenario: Powering FPGA, DSP, and display controllers in head units with wide input voltage range and cold-crank resilience. IC Role / Device Role / Timing Role: Primary 5V/3.3V point-of-load regulator delivering 2.5A with 42V transient immunity and 98% dropout capability. Use Value: Eliminates need for upstream pre-regulator; maintains stable output during engine start (6V–16V transients) without brownout. | Use Scenario: Supplying ultra-low-power microcontrollers and wireless transceivers (BLE/Zigbee) in battery-backed edge sensors. IC Role / Device Role / Timing Role: Efficient 3.3V buck converter operating in PFM mode at µA-level loads, synchronized to MCU sleep cycles via FSYNC. Use Value: Achieves 28µA quiescent current and >85% efficiency at 1mA load - extends battery life in maintenance-free deployments. |
| RF Transceiver Power Supply | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Generating clean, low-noise 3.3V for cellular/LTE modems where spectral emissions must meet strict regulatory limits. IC Role / Device Role / Timing Role: Fixed-frequency FPWM-mode buck converter synchronized to baseband clock via FSYNC to suppress switching harmonics. Use Value: Enables EMI-controlled design without shielding or ferrites - meets EN 55022 Class B with minimal board area. | Use Scenario: Regulating 5V for isolated digital I/O drivers and analog front-ends in DIN-rail mounted PLC modules with 24V DC input. IC Role / Device Role / Timing Role: Robust 2.5A buck converter with 36V max input, thermal shutdown, and power-good signaling for system health monitoring. Use Value: Sustains operation during 24V line surges up to 42V; PGOOD enables watchdog reset and fault logging in industrial control firmware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480RQWR | 4.5V–36V input, 8A output, 15µA IQ, no integrated BIAS LDO | Lacks dedicated 5V BIAS rail and PGOOD; requires external biasing and sequencing circuitry | Choose LM61480RQWR for higher current needs (>2.5A) and lower IQ, but add external components for bias and monitoring. |
| TPS54240DGQR | 3.5V–42V input, 2.5A, 115µA IQ, external MOSFETs required | Higher quiescent current; lacks integrated switches, BIAS LDO, and spread-spectrum EMI control | Choose TPS54240DGQR if board space allows discrete FETs and cost sensitivity outweighs EMI/efficiency benefits. |
Compared with LM61480RQWR and TPS54240DGQR, the MAX17244ETESA+T uniquely integrates a 5V BIAS LDO, PGOOD, SYNCOUT, and factory-enabled spread-spectrum - reducing component count and simplifying EMI-compliant designs for mid-power industrial and automotive applications.
Availability
MAX17244ETESA+T is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial IoT sensor nodes, and RF transceiver power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q200-aligned reliability.
Supply support for MAX17244ETESA+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 demanding industrial, automotive, and communications applications.
The MAX17244 belongs to Maxim's high-efficiency synchronous buck converter product line, engineered for wide-input industrial and automotive power supplies where low quiescent current, transient robustness, and EMI control are critical.
FAQ
What is the maximum input voltage transient rating for the MAX17244ETESA+T?
The MAX17244ETESA+T supports 42V input voltage transients for durations ≤ 50ns under normal operation and full load. This rating applies to both SUP and SUPSW pins and enables reliable operation during automotive load-dump events without external TVS diodes.
How does the MAX17244ETESA+T achieve 28µA quiescent current?
The MAX17244ETESA+T achieves 28µA quiescent current through adaptive biasing, deep-sleep circuitry in standby mode, and optimized gate driver architecture. This value is measured at no load, VOUT = 5V, and VFSYNC = 0V - enabling energy-efficient always-on subsystems in battery-powered applications.
Can the MAX17244ETESA+T operate with a 3.5V input and 5V output?
Yes, the MAX17244ETESA+T can operate with a 3.5V input and 5V output by running at up to 98% duty cycle in dropout mode. However, efficiency drops significantly below ~6V input; for sustained 3.5V–5V conversion, ensure thermal design accommodates reduced efficiency and verify minimum on-time constraints per datasheet Equation 1.
What is the function of the SYNCOUT pin on the MAX17244ETESA+T?
The SYNCOUT pin on the MAX17244ETESA+T is an open-drain output that delivers a 180° out-of-phase clock signal relative to the internal oscillator. It enables interleaved operation of multiple MAX17244ETESA+T devices to reduce input ripple current and improve thermal distribution in high-current multi-rail systems.
Does the MAX17244ETESA+T support spread-spectrum frequency modulation?
Yes, the MAX17244ETESA+T includes factory-enabled spread-spectrum modulation that dithers the switching frequency by ±6% around the programmed fOSC with a 110µs triangular period at 2.2MHz. This feature is active only when using the internal oscillator - it is disabled during external synchronization via FSYNC.
MAX17244ETESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1V (3.3V)
- Voltage - Output (Max):
- 10V
- Current - Output:
- 2.5A
- Frequency - Switching:
- 400kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (5x5)
MAX17244ETESA+T FAQ
1.How can I place an order for MAX17244ETESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17244ETESA+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 MAX17244ETESA+T reliable?
The price and inventory of MAX17244ETESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17244ETESA+T is usually 5 days.
3.What payment methods are accepted for MAX17244ETESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17244ETESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17244ETESA+T?
MAX17244ETESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17244ETESA+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 MAX17244ETESA+T?
For technical support, including MAX17244ETESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17244ETESA+T requirements.
6.How does Aetrix verify that MAX17244ETESA+T is sourced from the original manufacturer or authorized distributors?
All MAX17244ETESA+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 MAX17244ETESA+T meets industry standards.
7.What is the process for return or replacement of MAX17244ETESA+T?
All MAX17244ETESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17244ETESA+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 MAX17244ETESA+T part is unused and in its original packaging.
Return procedure for MAX17244ETESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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