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Analog Devices Inc./Maxim Integrated MAX17570FATA+T
- Part No.:
- MAX17570FATA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
MAX17570FATA+T.pdf
- Description:
- IC REG BUCK ADJ 300MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,347
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Product details
Overview
MAX17570FATA+T from Analog Devices is a 4.5V to 60V input, 300mA synchronous step-down DC-DC converter in an 8-pin 2mm × 2mm TDFN package, featuring fixed 5V output (per MAX17570F variant), internal MOSFETs, and integrated compensation. It delivers 95.8% peak efficiency at 15VIN/12VOUT/150mA and supports monotonic startup into prebiased outputs for industrial power rails.
For engineers reviewing the MAX17570FATA+T datasheet, MAX17570FATA+T pinout, MAX17570FATA+T application, or MAX17570FATA+T equivalent, key selection considerations include its 200kHz–1MHz adjustable switching frequency, hiccup-mode overcurrent protection, open-drain RESET output with 92–95% VOUT thresholds, PFM light-load operation, and -40°C to +125°C ambient operating range.
Technical Context
The MAX17570FATA+T implements current-mode control with internal slope compensation and cycle-by-cycle peak current limiting (0.56A typ). Its PWM/PFM hybrid architecture enables fixed-frequency operation under full load and pulse-skipping at light loads to maintain high efficiency-critical for battery-backed or thermally constrained systems.
It integrates a 5V LDO (VCC) with 4.75V–5.25V regulation, programmable EN/UVLO (1.215V rising threshold), and a dedicated RT/SYNC pin supporting external clock synchronization (not available in PFM variants like MAX17570F). The device features monotonic soft-start (512 cycles), hiccup-mode thermal/current fault recovery (32768-cycle timeout), and robust protection including overtemperature shutdown (166°C) and open-drain RESET with 1024-cycle delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 60V - supports wide industrial and automotive supply rails without external pre-regulation. |
| Output Voltage | Fixed 5V (MAX17570F variant) - eliminates external feedback resistors and simplifies BOM for standard logic rail generation. |
| Max Output Current | 300mA - sufficient for powering microcontrollers, sensors, and interface ICs in space-constrained designs. |
| Peak Efficiency | 95.8% at VIN=15V, VOUT=12V, IOUT=150mA - minimizes thermal dissipation and extends battery life in portable applications. |
| Shutdown Current | 2.2μA (typ) - enables ultra-low-power standby modes in always-on monitoring systems. |
| Switching Frequency | 200kHz to 1MHz (adjustable via RT resistor) - allows optimization of size (higher fSW → smaller inductor) vs. EMI (lower fSW → easier filtering). |
| Operating Temp | -40°C to +125°C ambient - qualified for harsh factory automation, transportation, and outdoor embedded environments. |
Pinout & Package
Package: 8-pin, 2mm × 2mm TDFN (Package Code T822C+6C), RoHS-compliant, with exposed thermal pad for enhanced heat dissipation (θJA = 162°C/W on 4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power Input | Primary input rail connection; requires local 1μF X7R ceramic bypass to GND for noise suppression and transient response. |
| EN/UVLO (Pin 2) | Enable / Input UVLO Input | Active-high enable with programmable turn-on threshold (1.215V typ); supports resistor-divider-based input undervoltage lockout. |
| VCC (Pin 3) | LDO Output | Internally regulated 5V supply for gate drivers and control circuitry; must be bypassed with ≥1μF capacitor to GND. |
| VOUT/FB (Pin 4) | Feedback Input | Connects directly to 5V output for fixed-output operation (MAX17570F); monitors regulation via internal 0.915V reference. |
| RT/SYNC (Pin 5) | Oscillator Timing / Sync Input | Resistor-programmable frequency (200kHz–1MHz); external clock sync disabled in PFM mode (MAX17570F). |
| RESET (Pin 6) | Open-Drain Reset Output | Asserts low when VOUT falls below 92% of nominal; goes high-impedance 1024 cycles after VOUT rises above 95%. |
| GND (Pin 7) | Power Ground | Common return path for VIN, VCC, and LX; must connect to low-impedance ground plane at single-point star node. |
| LX (Pin 8) | Switch Node | Connection to inductor switch node; carries high di/dt; requires short, low-inductance trace to minimize EMI and ringing. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Operation | Integrated high-side pMOS (1.38Ω typ) and low-side nMOS (0.5Ω typ) eliminate external Schottky diode and reduce conduction losses. |
| Internal Compensation | Eliminates external compensation network, reducing component count and layout sensitivity while ensuring stable loop response across operating conditions. |
| All-Ceramic Capacitor Support | Enables ultra-compact PCB layout using only X7R ceramics for CIN, COUT, and CVCC, avoiding bulkier electrolytics and improving reliability. |
| PFM Light-Load Mode | Reduces quiescent current to 145μA (typ) and skips pulses below ~150mA load, boosting efficiency in standby or sensor-monitoring states. |
| Hiccup-Mode Protection | Enters 32768-cycle suspension on overcurrent or output undervoltage (<65% nominal), limiting average power dissipation during sustained faults. |
Applications
| Factory Automation Power Rail | Aftermarket Asset Tracker |
|---|---|
Use Scenario: Powering PLC I/O modules and fieldbus transceivers in high-density control cabinets where ambient temperature exceeds 85°C and airflow is restricted. IC Role / Device Role / Timing Role: Primary 5V point-of-load regulator delivering clean, regulated power with hiccup-mode fault containment and CISPR32 Class B compliance. Use Value: 95.8% peak efficiency and -40°C to +125°C rating prevent thermal derating and ensure uptime in uncooled enclosures. | Use Scenario: Compact GPS/GSM asset tracker mounted inside vehicle cabins or cargo containers, powered from 12V/24V battery with intermittent connectivity. IC Role / Device Role / Timing Role: Fixed 5V buck converter enabling small form factor, low quiescent current (2.2μA shutdown), and reliable startup under cold-crank conditions. Use Value: Integrated FETs and all-ceramic design reduce solution size by >40% vs. discrete controllers, accelerating time-to-market for miniaturized trackers. |
| Industrial Sensor Node | Ruggedized HMI Display Supply |
Use Scenario: Battery- or energy-harvesting–powered wireless sensor node requiring long operational life and immunity to voltage transients on shared 24V plant wiring. IC Role / Device Role / Timing Role: Input-protected, prebias-capable DC-DC stage converting noisy 24V plant bus to stable 5V for MCU and analog front-end. Use Value: Programmable EN/UVLO prevents brownout resets; monotonic soft-start avoids output discharge during hot-swap events. | Use Scenario: Touchscreen HMI in heavy equipment with wide input voltage swings (e.g., 9V–36V) and strict EMI limits for operator safety certification. IC Role / Device Role / Timing Role: EMI-optimized 5V supply with adjustable fSW and CISPR32 Class B compliance for conducted/radiated emissions. Use Value: External clock sync capability (on compatible variants) enables deterministic timing alignment with system master clock to suppress beat frequencies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QDDARQ1 | Automotive AEC-Q100 Grade 1, 3.5–65V input, 300mA, adjustable output only; no fixed 5V option; requires external compensation. | Targeted at automotive infotainment and ADAS; lacks integrated PFM mode and prebias startup. | Select when AEC-Q100 qualification and extended temp range (-40°C to +150°C) are mandatory, and design flexibility justifies added external components. |
| TPS54202DRCT | 2.9–17V input, 2A output, 500kHz fixed fSW, integrated compensation; lower voltage range and higher current than MAX17570FATA+T. | Optimized for low-voltage consumer electronics; unsuitable for 24V/48V industrial inputs or high-temp operation. | Choose only for cost-sensitive, low-input-voltage (<17V) applications where 2A output and smaller solution size outweigh input range limitations. |
Compared with LM5164QDDARQ1 and TPS54202DRCT, the MAX17570FATA+T uniquely combines wide 4.5–60V input, fixed 5V output, PFM efficiency at light loads, and full industrial temperature support in a 2mm × 2mm footprint-making it optimal for compact, thermally demanding non-automotive industrial power rails.
Availability
MAX17570FATA+T is available at Aetrix Electronics and suitable for factory automation controllers, aftermarket telematics units, and ruggedized sensor nodes requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX17570FATA+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX17570FATA+T belongs to Analog Devices' high-voltage synchronous buck converter product line, engineered specifically for reliable, compact, and efficient point-of-load regulation in harsh industrial environments where wide input range and thermal resilience are critical.
FAQ
What is the output voltage configuration of the MAX17570FATA+T?
The MAX17570FATA+T is the fixed 5V output variant of the MAX17570 family. Its VOUT/FB pin connects directly to the output, referencing an internal 0.915V feedback threshold. This eliminates external resistors and ensures tight regulation (±1.5% over temperature and line/load), making it ideal for powering 5V logic, USB peripherals, and analog sensors without calibration overhead.
Does the MAX17570FATA+T support external clock synchronization?
No, the MAX17570FATA+T does not support external clock synchronization. As a PFM-mode variant (MAX17570F), its RT/SYNC pin functions only as a resistor-programmable oscillator input (200kHz–1MHz). SYNC functionality is explicitly disabled per the datasheet and reserved for PWM-only variants (MAX17570A/B/C). Attempting external clock injection will not synchronize switching and may cause erratic behavior.
What protection features are implemented in the MAX17570FATA+T?
The MAX17570FATA+T integrates hiccup-mode overcurrent protection (triggered at 0.66A runaway limit), thermal shutdown (166°C junction, 20°C hysteresis), open-drain RESET with 92–95% VOUT monitoring, monotonic startup into prebiased outputs, and programmable EN/UVLO. These features collectively ensure safe operation during short circuits, overtemperature, input brownouts, and hot-swap events without external supervision circuitry.
Can the MAX17570FATA+T operate with ceramic capacitors only?
Yes, the MAX17570FATA+T is fully optimized for all-ceramic capacitor designs. Its internal compensation and current-mode control architecture stabilize the loop using only X7R-grade 1μF input and output ceramics, eliminating the need for bulk electrolytics. This reduces solution size, improves reliability, and avoids aging-related capacitance drift-key advantages for sealed or long-life industrial deployments.
What is the significance of the 'F' suffix in MAX17570FATA+T?
The 'F' in MAX17570FATA+T denotes the specific variant with fixed 5V output and PFM light-load operation. Per Table 1 and the Functional Diagram, MAX17570F uses internal resistor divider S1=CLOSE/S2=OPEN and references a 0.915V FB threshold, distinguishing it electrically from the 3.3V (A/D), 5V PWM (B/E), and adjustable (C/F) variants. This suffix ensures correct BOM assignment and functional compatibility.
MAX17570FATA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 0.9V
- Voltage - Output (Max):
- 58.2V
- Current - Output:
- 300mA
- Frequency - Switching:
- 200kHz ~ 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (2x2)
MAX17570FATA+T FAQ
1.How can I place an order for MAX17570FATA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17570FATA+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 MAX17570FATA+T reliable?
The price and inventory of MAX17570FATA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17570FATA+T is usually 5 days.
3.What payment methods are accepted for MAX17570FATA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17570FATA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17570FATA+T?
MAX17570FATA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17570FATA+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 MAX17570FATA+T?
For technical support, including MAX17570FATA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17570FATA+T requirements.
6.How does Aetrix verify that MAX17570FATA+T is sourced from the original manufacturer or authorized distributors?
All MAX17570FATA+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 MAX17570FATA+T meets industry standards.
7.What is the process for return or replacement of MAX17570FATA+T?
All MAX17570FATA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17570FATA+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 MAX17570FATA+T part is unused and in its original packaging.
Return procedure for MAX17570FATA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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