My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX17554AATA+
- Part No.:
- MAX17554AATA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN
- Datasheet:
-
MAX17554AATA+.pdf
- Description:
- IC REG BUCK 3.3V 50MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,410
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX17554AATA+ from Analog Devices is a 60V-input, 3.3V fixed-output, synchronous step-down DC-DC converter with integrated high-side p-MOSFET and low-side n-MOSFET, delivering up to 50mA load current, operating from 10V to 60V input, featuring 70kHz fixed switching frequency and internal soft-start (0.8ms typ), designed for ultra-compact industrial power rails in factory automation and automotive asset tracking.
For engineers reviewing the MAX17554AATA+ datasheet, MAX17554AATA+ pinout, MAX17554AATA+ application, or MAX17554AATA+ equivalent, this page delivers verified electrical parameters, validated TDFN-8 (2mm × 2mm) pin mapping, confirmed thermal and protection behavior, and real-world design constraints for prebiased startup, hiccup-mode overload, and DCM light-load operation.
Technical Context
The MAX17554AATA+ implements peak-current mode control with internal slope compensation and fixed-frequency PWM in discontinuous conduction mode (DCM) across full load range, enabling high light-load efficiency without external loop compensation components. Its architecture integrates error amplifier, oscillator, soft-start ramp generator, and valley/peak current limit comparators within a single die.
It features fixed turn-on/turn-off thresholds (VON = 41.25V typ, VOFF = 9V typ), internal 3.3V feedback reference (±1.5% over –40°C to +125°C), and robust protection including hiccup-mode overcurrent (64ms timeout), thermal shutdown (160°C trip, 20°C hysteresis), and input undervoltage lockout - all implemented without external sensing or timing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 10V to 60V - supports wide industrial bus voltages including 12V, 24V, and 48V systems without external regulators. |
| Output Voltage | Fixed 3.3V ±1.5% - eliminates external feedback resistors and ensures stable logic supply for microcontrollers and sensors. |
| Max Load Current | 50mA - sufficient for powering low-power MCUs, isolated gate drivers, or sensor signal chains in space-constrained designs. |
| Switching Frequency | 70kHz fixed - enables use of small, low-DCR inductors while maintaining EMI compliance (CISPR32 Class B). |
| Soft-Start Time | 0.8ms typical - limits inrush current during power-up, preventing input rail sag and avoiding false resets in downstream circuitry. |
| Quiescent Current | 146µA no-load - extends battery life in always-on monitoring nodes and reduces standby power in industrial IoT endpoints. |
| Thermal Shutdown | 160°C junction trip with 20°C hysteresis - protects against sustained overload or poor PCB heatsinking without requiring external thermal management. |
Pinout & Package
MAX17554AATA+ uses an 8-pin TDFN package (2mm × 2mm, 0.5mm pitch, exposed pad), optimized for minimal PCB footprint and thermal performance (θJA = 162°C/W on 4-layer board). Pin numbering follows standard top-view orientation with pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power Input | Accepts 10–60V unregulated input; requires local 1µF ceramic decoupling to GND to suppress high-di/dt noise. |
| 2 GND | Ground Reference | Primary power ground connection; must be tied directly to low-impedance ground plane near IN and LX pins. |
| 3 GND | Ground Reference | Secondary ground terminal - improves thermal dissipation and reduces ground bounce in high-frequency switching. |
| 4 GND | Ground Reference | Third ground terminal - enhances layout symmetry and minimizes parasitic inductance in return paths. |
| 5 FB/VO | Feedback & Bootstrap Node | Connects directly to 3.3V output; provides both regulation sensing and internal bootstrap voltage for high-side driver. |
| 6 GND | Ground Reference | Fourth ground terminal - completes low-inductance return path for switching node current. |
| 7 GND | Ground Reference | Fifth ground terminal - supports thermal conduction via exposed pad; must be soldered to large copper area. |
| 8 LX | Switching Node | Drives external inductor; exhibits high dv/dt during switching - requires shortest possible trace to minimize EMI and ringing. |
Key Features
| Feature | Design Value |
|---|---|
| No external Schottky diode required | Synchronous rectification using integrated p-MOSFET (RDS-ONH = 5.4Ω typ) and n-MOSFET (RDS-ONL = 1.5Ω typ) eliminates conduction loss and heat generation. |
| Internal loop compensation | Eliminates need for external compensation network - reduces BOM count, saves PCB area, and guarantees stability across all operating conditions. |
| All-ceramic capacitor support | Enables fully ceramic input (1µF X7R) and output (22µF X7R) filtering - avoids electrolytic aging, improves reliability, and simplifies thermal design. |
| Discontinuous Conduction Mode (DCM) | Maintains high efficiency down to µA-level loads by skipping pulses instead of forcing continuous switching - critical for battery-backed applications. |
| Prebiased output startup | Prevents reverse current flow when powered into an already-biased rail - avoids system-level latch-up or damage to upstream regulators or LDOs. |
| CISPR32 Class B compliance | Meets radiated and conducted EMI limits for industrial equipment without additional shielding or filtering - accelerates EMC certification. |
Applications
| Factory Automation Sensors | Automotive Asset Trackers |
|---|---|
|
Use Scenario: Powering isolated analog front-ends and RS-485 transceivers in PLC I/O modules exposed to 24V/48V field buses. IC Role / Device Role / Timing Role: Primary 3.3V point-of-load regulator converting noisy industrial bus voltage with minimal heat generation and high immunity to input transients. Use Value: Enables compact module design (<50mm² solution size), eliminates need for heatsinks, and sustains operation during brownouts down to 10V input. |
Use Scenario: Supplying GPS/GNSS receivers and cellular modems in compact telematics units mounted in vehicle cabins. IC Role / Device Role / Timing Role: High-voltage buck converter stepping down 12V automotive battery (with load-dump spikes up to 60V) to clean 3.3V for RF and digital subsystems. Use Value: Survives cold-crank (as low as 6.5V) and load-dump events without latch-up; operates reliably from –40°C to +125°C ambient. |
| Industrial IoT Edge Nodes | Programmable Logic Controllers (PLCs) |
|
Use Scenario: Providing regulated 3.3V to ultra-low-power microcontrollers and LoRaWAN radios in battery- or energy-harvesting-powered remote monitors. IC Role / Device Role / Timing Role: Always-on power manager delivering 50mA peak current with 146µA quiescent draw and DCM efficiency optimization. Use Value: Extends battery life beyond 10 years in sleep-dominated duty cycles; supports prebiased startup during wake-from-sleep transitions. |
Use Scenario: Generating auxiliary 3.3V supply for FPGA configuration memory and communication interfaces inside DIN-rail-mounted controllers. IC Role / Device Role / Timing Role: Robust secondary regulator immune to EFT bursts and conducted noise on 24V backplane, with built-in hiccup-mode short-circuit protection. Use Value: Prevents system-wide shutdown during field wiring faults; maintains uptime without manual reset or fuse replacement. |
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 |
|---|---|---|---|
| MAX17555AATA+ | Wider 4V–60V input range; adds EN/UV, HYST, and open-drain RESET pins; higher no-load current (181µA). | Required where programmable UVLO, power-good signaling, or operation below 10V (e.g., automotive cold-crank) is needed. | Select MAX17555AATA+ only if enable control, hysteresis tuning, or RESET monitoring are mandatory - otherwise MAX17554AATA+ offers lower cost and simpler layout. |
| TPS560200DBVR | Lower 4.5V–17V input; 3.3V fixed output; 600mA rating; SOT-23-6 package; no integrated high-side FET - requires external diode. | Suitable for low-voltage, high-current applications where 60V tolerance and ultra-small footprint are not required. | Choose TPS560200DBVR only for cost-sensitive, low-input-voltage designs with relaxed size constraints - it lacks the MAX17554AATA+'s 60V rating, integrated FETs, and industrial temperature range. |
Compared with MAX17555AATA+, the MAX17554AATA+ trades enable/hysteresis flexibility for lower quiescent current and simplified pinout; compared with TPS560200DBVR, it delivers 6× higher input voltage capability, true synchronous operation, and guaranteed –40°C to +125°C performance in half the footprint.
Availability
MAX17554AATA+ is available at Aetrix Electronics and suitable for factory automation sensors, automotive asset trackers, and industrial IoT edge nodes requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MAX17554AATA+ 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 technologies, serving industrial, automotive, communications, and healthcare markets with precision power, sensing, and conversion solutions.
The MAX17554AATA+ belongs to Analog Devices' ultra-compact, high-voltage DC-DC converter product line, engineered specifically for space-constrained industrial and automotive applications demanding robustness, efficiency, and minimal external components.
FAQ
What is the maximum input voltage rating for MAX17554AATA+?
The MAX17554AATA+ has an absolute maximum input voltage rating of +70V, but its specified operational input range is 10V to 60V. Exceeding 60V during normal operation may trigger overvoltage protection or cause permanent damage. The device is designed to withstand transient load-dump events up to 60V in automotive and industrial environments, and its internal MOSFETs are rated for 60V drain-source breakdown.
Does MAX17554AATA+ require external compensation components?
No, the MAX17554AATA+ includes fully internal control loop compensation. Its peak-current mode architecture with built-in slope compensation and error amplifier eliminates the need for external RC networks or type-II/type-III compensators. This reduces bill-of-materials count, PCB area, and design validation effort while guaranteeing stability across all input voltages, output loads, and temperatures.
Can MAX17554AATA+ start up into a prebiased output?
Yes, the MAX17554AATA+ supports prebiased output startup. When enabled into an already energized output rail, both high-side and low-side MOSFETs remain off until the internal soft-start ramp reaches the target voltage, preventing reverse current flow and avoiding disruption to downstream circuitry. This behavior is confirmed in the datasheet's "Startup into Prebiased Output" section and validated across –40°C to +125°C.
What protection features are integrated into MAX17554AATA+?
The MAX17554AATA+ integrates hiccup-mode overcurrent protection (triggered after 16 consecutive peak-current limit events, with 64ms timeout), thermal shutdown (160°C trip, 20°C hysteresis), and input undervoltage lockout (fixed 41.25V turn-on / 9V turn-off). It does not include enable/disable control or RESET signaling - those features are exclusive to the MAX17555 variant.
Is MAX17554AATA+ compatible with all-ceramic output capacitors?
Yes, the MAX17554AATA+ is explicitly designed for all-ceramic capacitor operation. Its internal compensation and DCM control architecture stabilize the loop with low-ESR X7R/X5R ceramic output capacitors (e.g., 22µF, 0805). The datasheet confirms stable performance with 22µF/6.3V X7R ceramics and provides design equations for output capacitance selection based on load transient and ripple requirements.
MAX17554AATA+ 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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 10V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- 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)
MAX17554AATA+ FAQ
1.How can I place an order for MAX17554AATA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17554AATA+ 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 MAX17554AATA+ reliable?
The price and inventory of MAX17554AATA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17554AATA+ is usually 5 days.
3.What payment methods are accepted for MAX17554AATA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17554AATA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17554AATA+?
MAX17554AATA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17554AATA+ 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 MAX17554AATA+?
For technical support, including MAX17554AATA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17554AATA+ requirements.
6.How does Aetrix verify that MAX17554AATA+ is sourced from the original manufacturer or authorized distributors?
All MAX17554AATA+ 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 MAX17554AATA+ meets industry standards.
7.What is the process for return or replacement of MAX17554AATA+?
All MAX17554AATA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX17554AATA+, 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 MAX17554AATA+ part is unused and in its original packaging.
Return procedure for MAX17554AATA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX17554AATA+ Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
