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Analog Devices Inc./Maxim Integrated MAX17553BATA+T
- Part No.:
- MAX17553BATA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN
- Datasheet:
-
MAX17553BATA+T.pdf
- Description:
- IC REG BUCK ADJ 50MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,026
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Product details
Overview
MAX17553BATA+T from Analog Devices is a synchronous step-down DC-DC converter with integrated high-side p-MOSFET and low-side n-MOSFET, delivering up to 50mA output current at fixed 5V output. It operates from 4V to 60V input, achieves 91.5% full-load efficiency at 24VIN/5VOUT, and features internal compensation, fixed soft-start (3.2ms), and open-drain RESET monitoring. It targets space-constrained industrial power rails requiring robust, ultra-small point-of-load regulation.
For engineers reviewing the MAX17553BATA+T datasheet, MAX17553BATA+T pinout, MAX17553BATA+T application, or MAX17553BATA+T equivalent, key selection considerations include its 5V fixed output, 8-pin 2mm × 2mm TDFN package, -40°C to +125°C ambient operation, CISPR32 Class B compliance, and programmable switching frequency (150kHz–1.5MHz) via external RT resistor.
Technical Context
The MAX17553BATA+T implements peak-current-mode control with built-in slope compensation and operates in Discontinuous Conduction Mode (DCM) for higher light-load efficiency. Its internal error amplifier regulates FB/VO at 4.93V–5.07V (±1.5% over temperature), enabling precise 5V output without external feedback resistors.
Protection architecture includes hiccup-mode overload response (64ms timeout), thermal shutdown at 160°C (20°C hysteresis), and valley current limiting (110mA typical during startup). The EN/UV pin supports programmable undervoltage lockout with HYST pin for adjustable turn-on/turn-off thresholds, while the FB/VO pin serves dual roles: feedback sensing and bootstrap supply for internal circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 60V - supports wide industrial and automotive battery-supplied systems without pre-regulation. |
| Output Voltage | Fixed 5V - eliminates external feedback divider, reduces BOM count and layout area. |
| Max Output Current | 50mA - suitable for powering low-power microcontrollers, sensors, and interface ICs. |
| Switching Frequency | 150kHz to 1.5MHz - adjustable via RT pin resistor; default 310kHz enables compact magnetics and EMI filtering. |
| Efficiency | 91.5% at 24VIN/5VOUT/full load - minimizes thermal stress in sealed enclosures and high-density PCBs. |
| Quiescent Current | 275µA (no load) / 3.8µA (shutdown) - extends battery life in always-on monitoring applications. |
| Operating Temperature | -40°C to +125°C ambient - qualified for factory automation, under-hood automotive, and harsh industrial environments. |
Pinout & Package
MAX17553BATA+T is housed in an 8-pin, 2mm × 2mm TDFN package (package code T822CN+1) with exposed thermal pad for enhanced heat dissipation. The pinout is identical across MAX17553A/B/C variants and validated per Analog Devices' land pattern 90-0349.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power input | Accepts 4V–60V; requires local 1µF ceramic decoupling to GND for stable high-frequency operation. |
| 2 EN/UV | Enable/undervoltage control | Turns device ON when >1.215V; true shutdown below 0.75V; supports programmable UVLO with HYST pin. |
| 3 HYST | Hysteresis programming | Connects to EN/UV via resistor to set differential turn-on/turn-off voltage thresholds. |
| 4 RT | Frequency programming | Resistor-to-GND sets fSW from 150kHz–1.5MHz; unconnected = 310kHz default. |
| 5 FB/VO | Feedback & bootstrap | Direct connection to 5V output provides regulation reference and internal bias supply (no external divider needed). |
| 6 RESET | Open-drain power-good | Asserts low when VOUT drops <92% of 5V; releases high-Z 30µs after VOUT rises >95%. |
| 7 GND | Power ground | Must connect to low-impedance ground plane; serves as return for all internal circuits and LX switching node. |
| 8 LX | Switching node | Drives external inductor; high-impedance in shutdown; requires short, low-inductance trace to minimize EMI. |
Key Features
| Feature | Design Value |
|---|---|
| No external Schottky diode required | Synchronous rectification using integrated MOSFETs eliminates conduction loss and thermal derating concerns. |
| All-ceramic capacitor support | Enables ultra-compact layout with X7R/X5R MLCCs on input/output; no electrolytics needed for stability. |
| Internal loop compensation | Removes need for external compensation network, reducing design iteration time and component count. |
| Prebiased startup capability | Prevents reverse current flow into powered-up outputs, protecting downstream circuitry during hot-plug events. |
| CISPR32 Class B compliance | Meets radiated emission limits for industrial equipment without additional shielding or filtering components. |
Applications
| Factory Automation Sensors | Aftermarket Automotive Asset Trackers |
|---|---|
Use Scenario: Powering isolated temperature, pressure, and vibration sensors mounted inside CNC machine enclosures where airflow is restricted and ambient temperatures reach +85°C. IC Role / Device Role / Timing Role: Primary 5V point-of-load regulator converting 24V DC bus to clean, regulated 5V for sensor signal conditioning and low-power MCU operation. Use Value: High efficiency (91.5%) and -40°C to +125°C rating prevent thermal shutdown in sealed housings; small 2mm × 2mm footprint saves PCB area near heat-generating motors. | Use Scenario: Compact GPS/LoRaWAN asset trackers installed in commercial fleet vehicles, powered by 12V–24V lead-acid batteries with wide voltage swing and cold-cranking transients. IC Role / Device Role / Timing Role: Input-tolerant 5V regulator supplying power to GNSS receiver, cellular modem, and microcontroller in battery-backed tracking units. Use Value: 4V–60V input range accommodates cranking dips and alternator surges; 3.8µA shutdown current extends battery life during multi-week idle periods. |
| Industrial IoT Edge Nodes | Ruggedized HMI Power Rails |
Use Scenario: Battery- or energy-harvesting–powered edge nodes performing local AI inference and wireless telemetry in remote substations or oilfield instrumentation. IC Role / Device Role / Timing Role: Efficient 5V supply for ultra-low-power ARM Cortex-M microcontrollers and sub-GHz RF transceivers operating intermittently. Use Value: DCM operation delivers >85% efficiency at 1mA load; programmable fSW allows trade-off between light-load efficiency and EMI profile for co-location with sensitive analog sensors. | Use Scenario: Touchscreen HMIs deployed in food processing plants where washdown cycles expose electronics to moisture, condensation, and wide ambient swings (-20°C to +70°C). IC Role / Device Role / Timing Role: Robust 5V rail generator for display controller, capacitive touch ASIC, and USB peripherals in IP66-rated enclosures. Use Value: Built-in hiccup-mode OCP and thermal shutdown protect against shorted flex cables or connector faults; CISPR32 Class B compliance ensures EMC certification without redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR36506RNXR | 65V input, 600mA output, larger 8-pin SO PowerPAD package (4.9mm × 6.0mm); requires external compensation. | Higher current capacity suits motor drivers or multi-rail systems; less suitable for ultra-compact 50mA-only designs. | Select when >50mA load or need for external loop tuning is required; not drop-in due to size and pinout mismatch. |
| TPS562210ADDFR | 17V max input, 2A output, 6-pin SOT-23; no integrated compensation; lower voltage range excludes 24V/48V industrial buses. | Targeted at low-voltage consumer electronics; lacks UVLO hysteresis, thermal shutdown, and wide-temp qualification. | Consider only for cost-sensitive, low-input-voltage (<17V), high-current applications where industrial reliability is not required. |
Compared with LMR36506RNXR and TPS562210ADDFR, MAX17553BATA+T uniquely balances ultra-small 2mm × 2mm footprint, 60V input tolerance, integrated compensation, and full industrial temperature/EMC qualification - making it optimal for space-constrained, high-reliability 50mA point-of-load conversion.
Availability
MAX17553BATA+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 product lifecycles.
Supply support for MAX17553BATA+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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX17553 series belongs to Analog Devices' ultra-small, high-voltage DC-DC converter product line, designed specifically for space-constrained industrial and automotive point-of-load applications demanding wide input range, high efficiency, and robust protection.
FAQ
What is the output voltage of MAX17553BATA+T and is it adjustable?
MAX17553BATA+T provides a fixed 5V output voltage, confirmed by its FB/VO regulation voltage of 4.93V–5.07V (±1.5% over temperature). Unlike the MAX17553C variant, it does not support adjustable output - the FB/VO pin connects directly to the output node for both feedback and internal bootstrap, eliminating external resistors. This fixed configuration simplifies design and improves accuracy for 5V-powered systems.
Does MAX17553BATA+T require external compensation components?
No, MAX17553BATA+T integrates full internal control loop compensation, verified in the datasheet's "Internal Control Loop Compensation" highlight and functional block diagram. This eliminates external Type-II or Type-III compensation networks, reducing bill-of-materials count, PCB area, and design validation effort - a key differentiator versus competing regulators like TPS562210ADDFR that require external RC networks.
What protection features does MAX17553BATA+T include?
MAX17553BATA+T includes hiccup-mode overload protection (64ms timeout), overtemperature shutdown (160°C trip, 20°C hysteresis), valley current limiting (110mA typical at startup), and input undervoltage lockout with programmable hysteresis via the HYST pin. These are documented in the Absolute Maximum Ratings, Electrical Characteristics, and Detailed Description sections - ensuring robust operation in industrial fault conditions without external circuitry.
Can MAX17553BATA+T operate with prebiased outputs?
Yes, MAX17553BATA+T supports prebiased startup, explicitly stated in the Detailed Description section: "When the device starts into a prebiased output, both the high-side and the low-side MOSFETs are turned off so that the converter does not sink current from the output." This prevents reverse current flow and potential damage to downstream circuitry during hot-plug or brownout recovery scenarios - a critical feature for industrial fieldbus nodes and automotive modules.
What is the package type and thermal performance of MAX17553BATA+T?
MAX17553BATA+T uses an 8-pin TDFN package measuring 2mm × 2mm with exposed thermal pad (package code T822CN+1). Its thermal resistance is θJA = 162°C/W (four-layer board), enabling operation up to +125°C ambient. The datasheet specifies junction-to-case (θJC) = 20°C/W, confirming effective heat transfer through the thermal pad - essential for reliability in sealed enclosures or high-density layouts where airflow is limited.
MAX17553BATA+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):
- 4V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 54V
- Current - Output:
- 50mA
- Frequency - Switching:
- 150kHz ~ 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (2x2)
MAX17553BATA+T FAQ
1.How can I place an order for MAX17553BATA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17553BATA+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 MAX17553BATA+T reliable?
The price and inventory of MAX17553BATA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17553BATA+T is usually 5 days.
3.What payment methods are accepted for MAX17553BATA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17553BATA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17553BATA+T?
MAX17553BATA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17553BATA+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 MAX17553BATA+T?
For technical support, including MAX17553BATA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17553BATA+T requirements.
6.How does Aetrix verify that MAX17553BATA+T is sourced from the original manufacturer or authorized distributors?
All MAX17553BATA+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 MAX17553BATA+T meets industry standards.
7.What is the process for return or replacement of MAX17553BATA+T?
All MAX17553BATA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17553BATA+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 MAX17553BATA+T part is unused and in its original packaging.
Return procedure for MAX17553BATA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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