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Analog Devices Inc./Maxim Integrated MAX17554CATA+T
- Part No.:
- MAX17554CATA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN
- Datasheet:
-
MAX17554CATA+T.pdf
- Description:
- IC REG BUCK ADJ 50MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,362
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Product details
Overview
MAX17554CATA+T from Analog Devices is a 60V-input, 50mA synchronous step-down DC-DC converter in an ultra-small 2mm × 2mm TDFN package, featuring fixed 70kHz switching frequency, internal loop compensation, and 10V–60V input range. It delivers 3.3V output (A variant) or adjustable output (C variant), operates from –40°C to +125°C ambient, and targets space-constrained industrial power rails.
For engineers reviewing the MAX17554CATA+T datasheet, MAX17554CATA+T pinout, MAX17554CATA+T application, or MAX17554CATA+T equivalent, key selection criteria include its integrated high-side pMOS/low-side nMOS FETs (RDS-ONH = 5.4Ω typ, RDS-ONL = 1.5Ω typ), fixed soft-start (0.8ms), DCM operation for light-load efficiency, and -40°C to +125°C operating range with overtemperature and hiccup-mode protection.
Technical Context
The MAX17554CATA+T implements peak-current mode control with fixed 70kHz switching frequency and discontinuous conduction mode (DCM) for enhanced light-load efficiency. Its internal error amplifier regulates output voltage via FB/VO with ±1.25% accuracy (–40°C to +125°C) for adjustable versions like MAX17554C.
Startup includes fixed 0.8ms soft-start and supports prebiased output; protection features include valley/peak current limiting (210mA peak, 22mA valley steady-state), thermal shutdown at 160°C (20°C hysteresis), and built-in hiccup mode (64ms timeout). Input undervoltage turn-on/off thresholds are fixed at 41.25V/9V (typ) - no EN/UV or HYST pins present in MAX17554 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 10V to 60V - enables direct connection to 12V/24V/48V industrial bus rails without pre-regulation. |
| Output Current | Up to 50mA - sufficient for powering low-power microcontrollers, sensors, and interface ICs. |
| Switching Frequency | Fixed 70kHz - simplifies EMI filtering and eliminates external timing components. |
| Feedback Accuracy | ±1.25% over –40°C to +125°C - ensures stable regulation across extended industrial temperature range. |
| Internal FETs | High-side pMOS (5.4Ω typ), low-side nMOS (1.5Ω typ) - eliminates external MOSFETs and Schottky diodes. |
| Soft-Start Time | 0.8ms typical - limits inrush current during power-up, reducing stress on input capacitors and source. |
| Quiescent Current | 389µA (no load, MAX17554C) - balances efficiency and startup responsiveness for always-on systems. |
| Operating Temperature | –40°C to +125°C ambient - qualified for harsh environments including factory automation and automotive under-hood. |
Pinout & Package
MAX17554CATA+T uses an 8-pin TDFN package (2mm × 2mm, 0.5mm pitch) with exposed thermal pad. Pin 1 is IN; pins 2, 3, 4, and 7 are GND; pin 5 is FB/VO; pin 8 is LX. No EN/UV, HYST, or RESET pins - consistent with MAX17554 (not MAX17555) family identity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Power input supply | Accepts 10V–60V input; requires local 1µF ceramic decoupling to GND for stability and noise suppression. |
| 2, 3, 4, 7 - GND | Ground reference | Multiple GND pins minimize ground impedance and improve thermal dissipation; must connect to single-point power ground plane. |
| 5 - FB/VO | Feedback and bootstrap node | For MAX17554C: connects to resistor divider to set output from 0.8V to 90% of VIN; bias current ±100nA enables high-resistor-divider use. |
| 8 - LX | Switching node | Drives external inductor; high-impedance during shutdown; requires short, low-inductance trace to minimize EMI and voltage spikes. |
Key Features
| Feature | Design Value |
|---|---|
| All-ceramic capacitor support | Enables ultra-compact layout using only X7R ceramics (e.g., 1µF input, 22µF output), eliminating bulkier electrolytics. |
| Internal loop compensation | Removes need for external compensation network - reduces BOM count and design iteration time. |
| Discontinuous Conduction Mode (DCM) | Maintains high efficiency down to µA loads by skipping pulses instead of forcing continuous switching. |
| Fixed input UVLO thresholds | Turn-on at 41.25V (typ), turn-off at 9V (typ) - provides robust brown-in/brown-out behavior without external resistors. |
| Hiccup-mode overload protection | Enters 64ms shutdown cycle upon repeated overcurrent events - limits power dissipation and prevents thermal runaway. |
| CISPR32 Class B compliance | Meets radiated/conducted EMI requirements for industrial equipment without added shielding or filters. |
Applications
| Factory Automation Sensors | Aftermarket Automotive Asset Trackers |
|---|---|
Use Scenario: Powering isolated temperature/pressure sensors on 24V PLC backplanes with minimal heat generation. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering stable 3.3V/5V to MCU and analog front-end. Use Value: Ultra-small 2mm × 2mm footprint and all-ceramic design reduce PCB area by >40% vs discrete solutions; 125°C ambient rating ensures reliability near motors and drives. |
Use Scenario: Compact GPS/GSM trackers mounted in vehicle engine bays or cargo compartments. IC Role / Device Role / Timing Role: High-voltage buck converter stepping down 12V–48V automotive battery to 3.3V for RF and logic circuits. Use Value: Fixed 41.25V turn-on prevents false triggering during cranking dips; -40°C to +125°C operation survives extreme under-hood thermal cycling. |
| Industrial IoT Edge Nodes | Railway Signaling Interface Modules |
Use Scenario: Battery-backed wireless sensor nodes requiring long-term stability and low quiescent current. IC Role / Device Role / Timing Role: Efficient DC-DC stage converting wide-input backup supply (e.g., supercapacitor or LiSOCl₂) to regulated logic rail. Use Value: 389µA no-load current extends battery life; DCM operation maintains >85% efficiency at 100µA load - critical for multi-year deployments. |
Use Scenario: Isolated communication interfaces (RS-485/CAN) powered from 72V/110V railway traction batteries. IC Role / Device Role / Timing Role: Primary 60V-input buck regulator feeding isolated DC-DC modules and level-shifters. Use Value: 60V absolute max rating and 10V–60V operational range tolerate transients up to ±100V per EN 50155; hiccup protection handles shorted downstream circuitry safely. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17555CATA+T | Includes EN/UV, HYST, and open-drain RESET pins; wider 4V–60V input range; same 70kHz, 50mA, TDFN-8 package. | Required where programmable enable threshold, hysteresis, or power-good signaling is needed - e.g., sequenced power systems. | Select MAX17555CATA+T if system-level control (enable sequencing, reset assertion) is required; otherwise MAX17554CATA+T offers simpler, lower-cost implementation. |
| TPS560200DBVR | Lower 4.5V–17V input range; 600mA output; 500kHz switching; SOT-23-6 package; no internal compensation. | Suitable only for low-voltage, higher-current applications - not a drop-in replacement due to input range, current, and pinout mismatch. | Consider TPS560200DBVR only for cost-sensitive, <17V-input designs needing >50mA; MAX17554CATA+T remains optimal for 10V–60V industrial rails. |
Compared with MAX17555CATA+T, MAX17554CATA+T trades control flexibility for simplicity and fixed UVLO behavior; compared with TPS560200DBVR, it delivers 6× higher input voltage capability and full integration at the expense of output current headroom - making it uniquely suited for ruggedized 24V/48V point-of-load conversion.
Availability
MAX17554CATA+T is available at Aetrix Electronics and suitable for factory automation sensors, aftermarket automotive asset trackers, and industrial IoT edge nodes requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX17554CATA+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 with precision power, sensing, and signal chain solutions.
The MAX17554CATA+T belongs to Analog Devices' ultra-high-voltage DC-DC converter product line, designed specifically for compact, efficient power conversion in harsh industrial and transportation environments where wide input range and extended temperature operation are mandatory.
FAQ
What is the input voltage range supported by the MAX17554CATA+T?
The MAX17554CATA+T supports a 10V to 60V input voltage range, with absolute maximum rating of +70V on the IN pin. This allows direct operation from common industrial bus voltages (12V, 24V, 48V) and tolerance of transient surges. The device turns on at ~41.25V (typ) and turns off at ~9V (typ), providing fixed undervoltage lockout behavior without external components.
Does the MAX17554CATA+T require external compensation components?
No, the MAX17554CATA+T includes internal control loop compensation, eliminating the need for external RC networks. This simplifies layout, reduces bill-of-materials count, and improves design reliability - especially important for space-constrained applications like asset trackers and sensor nodes where board area is at a premium.
Can the MAX17554CATA+T be used with a prebiased output?
Yes, the MAX17554CATA+T supports startup into a prebiased output. During initial power-up, both high-side and low-side MOSFETs remain off until the internal reference ramps up, preventing reverse current flow from the output capacitor. This protects downstream circuitry and avoids output voltage overshoot in systems with hold-up capacitance or backup supplies.
What protection features does the MAX17554CATA+T include?
The MAX17554CATA+T integrates peak/valley current limiting, thermal shutdown at 160°C (with 20°C hysteresis), and hiccup-mode overload protection (64ms timeout). It also meets CISPR32 Class B emissions standards. These features ensure robust operation in unattended industrial equipment and prevent damage during short circuits, overloads, or elevated ambient temperatures.
Is the MAX17554CATA+T pin-compatible with other variants in the MAX17554 family?
Yes, all MAX17554 variants (A/B/C suffixes) share identical 8-pin TDFN-2×2mm package and pinout - including MAX17554CATA+T. The only differences are output configuration (fixed 3.3V/5V or adjustable) and feedback reference voltage (0.8V for C variant). This enables one PCB layout to support multiple output options through firmware or resistor selection.
MAX17554CATA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WFDFN
- 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):
- 10V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 54V
- Current - Output:
- 50mA
- Frequency - Switching:
- 70kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (2x2)
MAX17554CATA+T FAQ
1.How can I place an order for MAX17554CATA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17554CATA+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 MAX17554CATA+T reliable?
The price and inventory of MAX17554CATA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17554CATA+T is usually 5 days.
3.What payment methods are accepted for MAX17554CATA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17554CATA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17554CATA+T?
MAX17554CATA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17554CATA+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 MAX17554CATA+T?
For technical support, including MAX17554CATA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17554CATA+T requirements.
6.How does Aetrix verify that MAX17554CATA+T is sourced from the original manufacturer or authorized distributors?
All MAX17554CATA+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 MAX17554CATA+T meets industry standards.
7.What is the process for return or replacement of MAX17554CATA+T?
All MAX17554CATA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17554CATA+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 MAX17554CATA+T part is unused and in its original packaging.
Return procedure for MAX17554CATA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX17554CATA+T Tags
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