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Analog Devices Inc./Maxim Integrated MAX17554CATA+
- Part No.:
- MAX17554CATA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN
- Datasheet:
-
MAX17554CATA+.pdf
- Description:
- IC REG BUCK ADJ 50MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,470
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Product details
Overview
MAX17554CATA+ 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, internal loop compensation, and 10V–60V input range. It delivers 3.3V output (A variant) or adjustable 0.8V–90% VIN output (C variant), with ±1.25% feedback regulation accuracy over –40°C to +125°C - ideal for space-constrained industrial point-of-load and factory automation power rails.
For engineers reviewing the MAX17554CATA+ datasheet, MAX17554CATA+ pinout, MAX17554CATA+ application, or MAX17554CATA+ equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and current-limit behavior, real-world layout guidance for DCM operation, and two rigorously cross-checked alternative parts for design flexibility.
Technical Context
The MAX17554CATA+ implements peak-current mode control with fixed 70kHz switching and discontinuous conduction mode (DCM) for high light-load efficiency. Its integrated high-side p-MOSFET (RDS-ON = 5.4Ω typ) and low-side n-MOSFET (RDS-ON = 1.5Ω typ) enable fully synchronous operation without external Schottky diodes.
Startup includes fixed 0.8ms soft-start and supports prebiased output; protection features include hiccup-mode overload response (64ms timeout), thermal shutdown at 160°C (20°C hysteresis), and valley/peak current limiting (210mA peak, 22mA steady-state valley limit). The device uses internal error amplifier reference ramping and fixed internal compensation - no external compensation components required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 10V to 60V - supports wide industrial input rails including 12V, 24V, and 48V systems without external pre-regulation. |
| Output Current | Up to 50mA - sufficient for powering microcontrollers, sensors, and interface ICs in low-power embedded nodes. |
| Switching Frequency | Fixed 70kHz - enables predictable EMI filtering and eliminates need for frequency synchronization circuitry. |
| Feedback Regulation Accuracy | ±1.25% over –40°C to +125°C - ensures stable output under extreme ambient conditions without calibration. |
| Quiescent Current | 389µA (no load, C variant) - minimizes standby power loss in always-on industrial monitoring devices. |
| Thermal Resistance θJA | 162°C/W (4-layer board) - defines maximum power dissipation (496mW at 70°C ambient) before derating applies. |
| Operating Temperature | –40°C to +125°C ambient / –40°C to +150°C junction - qualified for harsh industrial and automotive under-hood environments. |
Pinout & Package
MAX17554CATA+ is housed in an 8-pin TDFN package (2mm × 2mm, 0.5mm pitch), with exposed thermal pad connected to GND for enhanced heat dissipation. Pin 1 is marked by dot; top-view orientation follows standard JEDEC outline T822CN+1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power Input | Accepts 10V–60V supply; requires local 1µF ceramic decoupling to GND to suppress high-di/dt transients. |
| 2 GND | Ground Reference | Primary ground connection; must be tied directly to low-impedance power ground plane near IN and LX pins. |
| 3 GND | Ground Reference | Secondary ground tie - improves noise immunity and reduces ground bounce in high-frequency switching node. |
| 4 GND | Ground Reference | Third ground connection - enhances thermal conduction via exposed pad and stabilizes internal bias circuits. |
| 5 FB/VO | Feedback & Bootstrap Input | For MAX17554C: connects to resistor divider to set output from 0.8V to 90% VIN; internal 0.8V reference enables precise adjustment. |
| 6 GND | Ground Reference | Fourth ground pin - reduces impedance of return path for feedback signal and improves regulation stability. |
| 7 GND | Ground Reference | Fifth ground pin - further lowers overall package inductance and supports robust EMI performance per CISPR32 Class B. |
| 8 LX | Switching Node | Connects to inductor switch node; high-impedance during shutdown; carries pulsed current up to 210mA peak. |
Key Features
| Feature | Design Value |
|---|---|
| All-ceramic capacitor support | Enables ultra-compact PCB layout (<10mm² solution size) using only X7R MLCCs - no electrolytics or tantalums needed. |
| Internal loop compensation | Eliminates 3–4 external compensation components (RC network), reducing BOM count and layout sensitivity to parasitics. |
| Discontinuous Conduction Mode (DCM) | Maintains >85% efficiency down to 1mA load - critical for battery-backed or energy-harvesting sensor nodes. |
| Fixed 0.8ms soft-start | Prevents input inrush current spikes during power-up, avoiding tripping upstream fuses or brownout on shared rails. |
| Hiccup-mode overload protection | Shuts down for 64ms after 16 consecutive current-limit events - limits average power dissipation to <100mW during short-circuit. |
Applications
| Factory Automation Sensors | Aftermarket Asset Trackers |
|---|---|
|
Use Scenario: Powering temperature/humidity sensors and IO-Link transceivers inside sealed enclosures with limited airflow. IC Role / Device Role / Timing Role: Primary 3.3V point-of-load regulator converting 24V field bus to clean, low-noise logic supply. Use Value: Ultra-low 389µA quiescent current extends battery life in wireless edge nodes; -40°C to +125°C rating ensures reliability in uncontrolled cabinet environments. |
Use Scenario: Compact GPS/GSM tracking units mounted in vehicle engine bays or cargo trailers. IC Role / Device Role / Timing Role: High-voltage buck converter stepping down 12V/24V automotive battery to regulated 3.3V for MCU and RF modules. Use Value: 60V absolute max rating withstands load-dump transients; 2mm × 2mm TDFN footprint saves >40% board area vs. discrete solutions. |
| Industrial PLC I/O Modules | Railway Signaling Interface Cards |
|
Use Scenario: Distributed digital input modules receiving 24V DC signals from field switches and relays. IC Role / Device Role / Timing Role: Isolated auxiliary supply generator providing 5V or 3.3V for optocoupler drivers and level translators. Use Value: CISPR32 Class B compliance meets EN 55032 emission limits without added shielding; internal soft-start prevents false triggering during hot-swap insertion. |
Use Scenario: Onboard power for LED status indicators and CAN transceivers in EN 50121-compliant signaling hardware. IC Role / Device Role / Timing Role: Robust 3.3V rail generator tolerant of wide input variation (10–60V) and frequent voltage sags during train acceleration. Use Value: Built-in 160°C thermal shutdown and 210mA peak current limit prevent latch-up during sustained overloads; -40°C cold-start capability ensures winter deployment readiness. |
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+ | Wider 4V–60V input range; adds EN/UV, HYST, and open-drain RESET pins; higher no-load current (389µA → 181µA for B variant, but 389µA for C). | Required where input undervoltage hysteresis or power-good signaling is needed - e.g., battery-powered systems with voltage sag detection. | Select MAX17555CATA+ when system-level enable control, reset assertion, or lower VIN start-up (down to 4V) is mandatory. |
| TPS63036YFFR | Lower 1.8V–5.5V input; 600mA output; 2MHz switching; different package (6-pin WSON); no internal compensation. | Suitable only for low-voltage, high-current portable applications - not a functional replacement for 10–60V industrial use cases. | Choose TPS63036YFFR only for sub-6V battery-powered designs requiring >100mA; not recommended for direct substitution in MAX17554CATA+ layouts. |
Compared with MAX17555CATA+, the MAX17554CATA+ trades enable/control flexibility for simpler 3-pin operation and identical 10–60V input suitability; versus TPS63036YFFR, it offers 6× higher input voltage rating and full integration but at lower output current - making it uniquely suited for ruggedized, low-IQ, high-VIN industrial point-of-load.
Availability
MAX17554CATA+ is available at Aetrix Electronics and suitable for factory automation sensors, aftermarket asset trackers, and industrial PLC I/O modules requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX17554CATA+ 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX17554CATA+ belongs to Analog Devices' ultra-small, high-voltage synchronous buck converter product line, designed specifically for space-constrained industrial and transportation applications demanding wide input range, high efficiency at light loads, and robust thermal/overload protection.
FAQ
What is the exact input voltage range supported by the MAX17554CATA+?
The MAX17554CATA+ supports a guaranteed operating input voltage range of 10V to 60V, with absolute maximum rating of 70V on the IN pin. This makes it suitable for 12V, 24V, and 48V industrial power rails, including those subject to transient overvoltages. Operation below 10V is not specified and may result in dropout or regulation failure.
Does the MAX17554CATA+ require external compensation components?
No - the MAX17554CATA+ integrates full internal loop compensation, eliminating the need for external RC networks typically required in voltage-mode or current-mode controllers. This simplifies design, reduces bill-of-materials cost, and improves immunity to PCB layout variations that affect compensation stability.
Can the MAX17554CATA+ drive a 50mA load continuously at full temperature range?
Yes - the MAX17554CATA+ is rated for continuous 50mA output current across its full –40°C to +125°C ambient operating temperature range. Thermal design must ensure junction temperature remains ≤150°C; with θJA = 162°C/W, power dissipation must stay below ~496mW at 70°C ambient, derating linearly above that.
What is the function of the FB/VO pin on the MAX17554CATA+?
On the MAX17554CATA+, the FB/VO pin serves as the adjustable feedback input. It references an internal 0.8V precision bandgap and connects to the center node of an external resistor divider to set output voltage from 0.8V up to 90% of VIN. Unlike fixed-output variants, it does not double as a bootstrap input - bootstrapping is handled internally.
Is the MAX17554CATA+ pin-compatible with other variants in the MAX17554 family?
Yes - all MAX17554 variants (A/B/C suffixes) share identical 8-pin TDFN-EP package, pinout, and footprint (T822CN+1). The only differences are internal configuration: A/B have fixed 3.3V/5V outputs, while C is adjustable. No PCB redesign is needed when migrating between MAX17554CATA+, MAX17554AATA+, or MAX17554BATA+.
MAX17554CATA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WFDFN
- Packaging:
- Strip
- 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+ FAQ
1.How can I place an order for MAX17554CATA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17554CATA+ 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+ reliable?
The price and inventory of MAX17554CATA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17554CATA+ is usually 5 days.
3.What payment methods are accepted for MAX17554CATA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17554CATA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17554CATA+?
MAX17554CATA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17554CATA+ 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+?
For technical support, including MAX17554CATA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17554CATA+ requirements.
6.How does Aetrix verify that MAX17554CATA+ is sourced from the original manufacturer or authorized distributors?
All MAX17554CATA+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX17554CATA+?
All MAX17554CATA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX17554CATA+, 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+ part is unused and in its original packaging.
Return procedure for MAX17554CATA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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