My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX17555AATA+T
- Part No.:
- MAX17555AATA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN
- Datasheet:
-
MAX17555AATA+T.pdf
- Description:
- IC REG BUCK 3.3V 50MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,348
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX17555AATA+T from Analog Devices is a 60V-input, 3.3V fixed-output, synchronous step-down DC-DC converter delivering up to 50mA load current with 70kHz fixed switching frequency, internal loop compensation, and 3.8µA shutdown current. It operates from 4V to 60V input, supports prebiased startup, and targets space-constrained industrial power rails requiring high efficiency and minimal external components.
For engineers reviewing the MAX17555AATA+T datasheet, MAX17555AATA+T pinout, MAX17555AATA+T application, or MAX17555AATA+T equivalent, key selection criteria include its wide 4V–60V input range, integrated high-side p-MOSFET (5.4Ω typ) and low-side n-MOSFET (1.5Ω typ), -40°C to +125°C ambient operation, RESET open-drain status output, and programmable EN/UV & HYST thresholds for precise input voltage control.
Technical Context
The MAX17555AATA+T implements peak-current mode control with discontinuous conduction mode (DCM) for high light-load efficiency and fixed 70kHz switching. Its internal error amplifier regulates FB/VO at 3.3V ±1.5% over temperature, and soft-start ramps output in 0.8ms (typ) to limit inrush.
It features programmable enable/undervoltage lockout (EN/UV threshold: 1.215V typ rising, 1.09V typ falling), hysteresis (HYST) pin for turn-on/off voltage separation, and an open-drain RESET output asserting low when FB/VO falls below 92% of regulation - all implemented without external timing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 60V - enables direct connection to 5V, 12V, 24V, and 48V industrial bus rails without pre-regulation. |
| Output Voltage | Fixed 3.3V ±1.5% (–40°C to +125°C) - eliminates feedback resistor network, reduces BOM count and layout sensitivity. |
| Max Load Current | 50mA - sufficient for powering microcontrollers, sensors, and interface ICs in ultra-low-power systems. |
| Switching Frequency | 70kHz fixed - simplifies EMI filtering design and avoids audible noise; stable across input/output/load variations. |
| Shutdown Current | 3.8µA - extends battery life in always-on monitoring applications and enables deep-sleep system states. |
| Thermal Shutdown | 160°C junction with 20°C hysteresis - protects against sustained overload or poor PCB thermal design without latch-up. |
| Package | 8-pin TDFN (2mm × 2mm, 0.5mm pitch) - delivers ultra-compact footprint ideal for space-limited modules and IoT edge nodes. |
Pinout & Package
MAX17555AATA+T is housed in an 8-pin, 2mm × 2mm TDFN package with exposed thermal pad (package code T822CN+1). The pinout is validated per Analog Devices' official datasheet Rev 1 (May 2022), with pins arranged in standard top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power Input | Accepts 4V–60V supply; requires local 1µF ceramic decoupling to GND for stability and noise suppression. |
| 2 EN/UV | Enable / Undervoltage Lockout Input | Drives high (>1.215V) to enable; falling below 1.09V disables device and reduces IN current to 3.8µA. |
| 3 HYST | Hysteresis Programming | Connected externally to EN/UV via resistor to set turn-on/off voltage separation; sinks 100µA max. |
| 4 GND | Ground Reference | Primary power ground; must be connected to low-impedance ground plane with short, wide traces. |
| 5 FB/VO | Feedback / Bootstrap Node | Internally regulated at 3.3V; connects directly to VOUT for fixed-output operation and supplies internal bias. |
| 6 RESET | Open-Drain Power-Good Output | Asserts low when VOUT drops below 92% of 3.3V; goes high-Z after VOUT rises above 95% with 30µs delay. |
| 7 GND | Ground Reference | Secondary ground connection; ties to same ground plane as Pin 4 for low-noise reference integrity. |
| 8 LX | Switching Node | Connects to inductor switch node; carries pulsed current; high-impedance during shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Synchronous FETs | High-side p-MOSFET (5.4Ω typ) + low-side n-MOSFET (1.5Ω typ) eliminate external Schottky diode and reduce conduction loss. |
| Internal Loop Compensation | Eliminates external compensation network - reduces component count, layout sensitivity, and design iteration time. |
| Programmable EN/UV & HYST | Allows precise, resistor-set input voltage turn-on/off thresholds - critical for brown-out recovery and battery-powered sequencing. |
| RESET Output with 30µs Delay | Provides clean, debounced power-good signal for MCU reset or system supervisor ICs without external RC timing. |
| Discontinuous Conduction Mode (DCM) | Maintains high efficiency down to µA-level loads - essential for intermittent-sensing applications like wireless sensor nodes. |
Applications
| Factory Automation Sensors | Automotive Asset Trackers |
|---|---|
|
Use Scenario: Compact industrial sensors mounted inside enclosures with limited airflow and no active cooling. IC Role / Device Role: Primary 3.3V point-of-load regulator powering low-power microcontrollers and analog front-ends. Use Value: Delivers >90% efficiency at 10–50mA loads while generating minimal heat - avoids thermal derating and extends sensor lifetime. |
Use Scenario: GPS-enabled vehicle tracking units powered by 12V automotive battery with cold-crank voltage dips. IC Role / Device Role: Input-tolerant 3.3V regulator enabling reliable operation down to 4V input during cranking events. Use Value: Wide 4V–60V input range and programmable EN/UV allow seamless start-up post-cold-crank without external supervisors. |
| IoT Edge Node Power | Industrial PLC I/O Modules |
|
Use Scenario: Battery- or energy-harvesting–powered wireless nodes requiring ultra-low quiescent current and small footprint. IC Role / Device Role: Always-on 3.3V rail generator with 3.8µA shutdown and prebiased startup support. Use Value: Enables multi-year battery life in sleep mode and glitch-free wake-up from precharged rails - no output voltage collapse. |
Use Scenario: DIN-rail mounted programmable logic controllers operating in harsh environments with wide ambient temperature swings. IC Role / Device Role: Robust 3.3V supply for FPGA configuration, communication PHYs, and real-time clock circuits. Use Value: –40°C to +125°C ambient rating, built-in hiccup-mode overload protection, and CISPR32 Class B compliance ensure reliability in uncontrolled cabinets. |
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 |
|---|---|---|---|
| MAX17554AATA+T | 10V–60V input range; no EN/UV, HYST, or RESET pins; fixed 3.3V output; 146µA no-load current. | Lacks programmable enable and power-good signaling - suitable only where input voltage remains >10V and system supervision is external. | Select MAX17554AATA+T only if input never drops below 10V and RESET/EN functionality is unnecessary. |
| LMR36503ADDA | 3V–65V input; 3.3V fixed output; 26µA shutdown; 2.2MHz switching; SOIC-8 package (3.9mm × 4.9mm). | Higher frequency enables smaller magnetics but increases EMI risk; larger SOIC package occupies ~3× more board area than TDFN. | Choose LMR36503ADDA only when higher switching frequency justifies larger footprint and added EMI filtering complexity. |
Compared with MAX17554AATA+T, MAX17555AATA+T adds critical system-control features (EN/UV, HYST, RESET) without increasing size or cost; versus LMR36503ADDA, it trades higher frequency for significantly smaller footprint and simpler EMI mitigation - making it optimal for space- and thermal-constrained industrial designs.
Availability
MAX17555AATA+T is available at Aetrix Electronics and suitable for factory automation sensors, automotive asset trackers, IoT edge nodes, industrial PLC I/O modules, and other applications requiring stable component supply with extended temperature support and ultra-small power conversion.
Supply support for MAX17555AATA+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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX17555AATA+T belongs to ADI's ultra-small, high-voltage synchronous buck converter family, designed specifically for space-constrained industrial and automotive systems needing robust, integrated, low-quiescent-power DC-DC regulation.
FAQ
What is the input voltage range supported by the MAX17555AATA+T?
The MAX17555AATA+T supports an input voltage range of 4V to 60V, enabling direct operation from common industrial bus voltages including 5V, 12V, 24V, and 48V rails. This wide range accommodates cold-crank conditions in automotive applications and ensures compatibility with unregulated or loosely regulated supplies without external pre-regulation stages.
Does the MAX17555AATA+T require external compensation components?
No, the MAX17555AATA+T features internal control loop compensation, eliminating the need for external resistors or capacitors in the feedback path. This simplifies design, reduces bill-of-materials count, improves layout robustness, and accelerates time-to-market - especially valuable in compact, high-reliability applications where component count and board space are constrained.
How does the RESET output on the MAX17555AATA+T function?
The RESET output on the MAX17555AATA+T is an open-drain signal that asserts low when the FB/VO voltage drops below 92% of its nominal 3.3V regulation level and returns to high-impedance 30µs after FB/VO rises above 95%. It also pulls low during EN/UV disable or hiccup-mode fault events - providing a reliable, self-timed power-good indicator for microcontroller reset or system monitoring without external timing components.
Can the MAX17555AATA+T operate with a prebiased output voltage?
Yes, the MAX17555AATA+T supports startup into a prebiased output. During prebiased startup, both high-side and low-side MOSFETs remain off until the internal soft-start ramp initiates switching, preventing reverse current flow from the output capacitor. This avoids output voltage overshoot or instability - critical in systems with shared or hot-pluggable power rails where the output may already be energized before the converter powers up.
What package type and thermal performance does the MAX17555AATA+T use?
The MAX17555AATA+T uses an 8-pin TDFN package measuring 2mm × 2mm with an exposed thermal pad (package code T822CN+1). Its junction-to-ambient thermal resistance (θJA) is 162°C/W on a four-layer board, and junction-to-case (θJC) is 20°C/W. These values enable reliable operation up to +125°C ambient when properly mounted on a thermally optimized PCB with adequate copper pour under the exposed pad.
MAX17555AATA+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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4V
- 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)
MAX17555AATA+T FAQ
1.How can I place an order for MAX17555AATA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17555AATA+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 MAX17555AATA+T reliable?
The price and inventory of MAX17555AATA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17555AATA+T is usually 5 days.
3.What payment methods are accepted for MAX17555AATA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17555AATA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17555AATA+T?
MAX17555AATA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17555AATA+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 MAX17555AATA+T?
For technical support, including MAX17555AATA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17555AATA+T requirements.
6.How does Aetrix verify that MAX17555AATA+T is sourced from the original manufacturer or authorized distributors?
All MAX17555AATA+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 MAX17555AATA+T meets industry standards.
7.What is the process for return or replacement of MAX17555AATA+T?
All MAX17555AATA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17555AATA+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 MAX17555AATA+T part is unused and in its original packaging.
Return procedure for MAX17555AATA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX17555AATA+T 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…
