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Analog Devices Inc./Maxim Integrated MAX15462BATA+T
- Part No.:
- MAX15462BATA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN
- Datasheet:
-
MAX15462BATA+T.pdf
- Description:
- IC REG BUCK 5V 300MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,161
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Product details
Overview
MAX15462BATA+T from Analog Devices is a high-efficiency, synchronous step-down DC-DC converter with integrated MOSFETs, delivering up to 300mA at a fixed 5V output. It operates across a 4.5V–42V input range, features peak-current-mode control, and supports configurable PFM/PWM operation via the MODE pin. Designed for industrial power rails in 4–20mA loops and sensor nodes, it integrates soft-start, EN/UVLO threshold programming, and open-drain RESET monitoring.
For engineers reviewing the MAX15462BATA+T datasheet, MAX15462BATA+T pinout, MAX15462BATA+T application, or MAX15462BATA+T equivalent, this page provides verified electrical specs, thermal performance data, mode-selection behavior, reset timing thresholds, and validated alternative options for fixed 5V PoL conversion in harsh environments.
Technical Context
The MAX15462BATA+T implements a peak-current-mode control architecture with internal slope compensation and a latched MODE pin that selects between constant-frequency PWM (MODE = GND) and light-load-optimized PFM (MODE unconnected). Its dual-MOSFET power stage includes a 1.75Ω high-side pMOS and 0.55Ω low-side nMOS at +25°C, enabling high efficiency without external Schottky diodes.
It incorporates an internal 5V LDO (VCC) with 4.75V–5.25V regulation, programmable EN/UVLO (1.19V–1.24V rising threshold), monotonic startup into prebiased outputs, hiccup-mode overcurrent protection, and thermal shutdown at 166°C with 10°C hysteresis - all specified over –40°C to +125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 42V - supports wide industrial input rails including 24V and 36V systems without external pre-regulation. |
| Output Voltage | Fixed 5.0V ±2% - factory-trimmed for MAX15462B variant; no external feedback resistors required. |
| Max Output Current | 300mA continuous - sufficient for powering microcontrollers, analog sensors, and interface ICs in compact designs. |
| Peak Efficiency | 92% at 300mA - achieved using synchronous rectification and low RDS(on) MOSFETs, reducing conduction loss. |
| Switching Frequency | 465kHz to 535kHz - fixed-frequency PWM operation enables predictable EMI filtering and stable loop design. |
| Shutdown Current | 2.2µA typical - enables ultra-low-power standby in battery-backed or energy-harvesting applications. |
| RESET Threshold Accuracy | 92% to 94% falling / 93.5% to 97.5% rising - provides precise output voltage supervision with 2ms delay before assertion. |
Pinout & Package
MAX15462BATA+T is housed in an 8-pin, 2mm × 2mm TDFN package with exposed pad for thermal dissipation. The package has θJA = 162°C/W and θJC = 20°C/W on a 4-layer JEDEC board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power Input | Primary input rail connection; requires ≥1µF X7R ceramic bypass capacitor to GND for stability and noise suppression. |
| EN/UVLO (Pin 2) | Enable & Input UVLO | Active-high enable with programmable turn-on threshold (1.19V–1.24V); pull to GND for shutdown or use resistor divider for custom UVLO. |
| VCC (Pin 3) | Internal LDO Output | 5V regulated supply for internal circuitry; must be bypassed with ≥1µF ceramic capacitor to GND. |
| FB/VOUT (Pin 4) | Feedback Input | Internally connected to 5V reference for MAX15462B; shorted directly to VOUT - no external resistors needed. |
| MODE (Pin 5) | Control Mode Select | Latched at power-up: GND = forced-PWM (fixed frequency); floating = PFM (pulse-skipping, high light-load efficiency). |
| RESET (Pin 6) | Open-Drain Monitor | Asserts low when VOUT falls below 92% of nominal; releases after 2ms delay once VOUT rises above 95% - requires external pull-up. |
| GND (Pin 7) | Ground Reference | Power ground return; must connect to low-impedance ground plane and tie all system grounds at single point. |
| LX (Pin 8) | Switch Node | Connection to inductor switch node; high-impedance during shutdown; handles ±800mA RMS current and withstands VIN + 0.3V. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Buck Topology | Eliminates external Schottky diode, reduces conduction loss, and improves full-load efficiency to 92%. |
| Integrated Compensation | Removes need for external compensation network - simplifies layout and ensures stable operation with ceramic output capacitors. |
| Monotonic Soft-Start | 4.1ms controlled ramp prevents output overshoot and inrush stress on downstream loads, even into prebiased rails. |
| Hiccup-Mode Overcurrent Protection | Enters auto-retry after runaway current limit is exceeded - protects against sustained short-circuit without thermal runaway. |
| All-Ceramic Capacitor Support | Enables ultra-compact PCB footprint using only MLCCs for input, output, and VCC bypass - no electrolytics required. |
| Industrial Temperature Range | Guaranteed operation from –40°C to +125°C ambient (junction up to +150°C), suitable for HVAC, process control, and field instrumentation. |
Applications
| 4–20mA Current Loop Transmitter | Industrial Sensor Node Power |
|---|---|
Use Scenario: Powers precision DACs, op-amps, and current-sense amplifiers in loop-powered field transmitters operating from 12–42V supply rails. IC Role / Device Role / Timing Role: Primary 5V PoL regulator supplying analog front-end and signal conditioning circuitry with tight load regulation. Use Value: Maintains 5V ±2% across 0–300mA load and –40°C to +125°C, ensuring ADC/DAC accuracy and eliminating need for external LDO post-regulation. |
Use Scenario: Supplies 5V to MEMS accelerometers, temperature sensors, and low-power MCUs in wireless condition-monitoring nodes deployed in factories or oil fields. IC Role / Device Role / Timing Role: High-efficiency buck converter enabling multi-year battery life via 2.2µA shutdown current and PFM light-load optimization. Use Value: Achieves >85% efficiency at 10mA load (PFM mode), extending runtime while maintaining 5V rail integrity under vibration and thermal cycling. |
| HVAC Zone Controller | High-Voltage LDO Replacement |
Use Scenario: Replaces inefficient 78L05-style LDOs in building automation controllers powered from 24V AC/DC supplies with wide input variation. IC Role / Device Role / Timing Role: Efficient 5V generation with built-in EN/UVLO to coordinate power sequencing during brownout events. Use Value: Reduces thermal load by >70% vs. linear regulators at 200mA, enabling fanless enclosure design and improving long-term reliability. |
Use Scenario: Upgrades legacy 42V-tolerant LDO-based power supplies in PLC I/O modules where heat and efficiency are critical constraints. IC Role / Device Role / Timing Role: Synchronous buck replacing dissipative linear regulation while retaining same 5V output and footprint compatibility. Use Value: Delivers identical 5V output with 92% peak efficiency and 162°C/W thermal resistance - eliminates heatsink requirement and saves board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR36506RNXR | 65V max input, 600mA output, 5V fixed option; uses voltage-mode control and requires external compensation. | Higher input voltage margin and current capability, but larger solution size due to external RC network and higher quiescent current (26µA). | Select when >42V input tolerance or >300mA load headroom is required; avoid if minimal BOM count and ultra-low IQ are priorities. |
| TPS54332DR | 28V max input, 3A output, adjustable only; requires external feedback resistors and compensation components. | Not pin-compatible; lacks integrated 5V fixed option, RESET output, or PFM mode - suited for higher-current adjustable designs. | Choose only if redesign allows layout changes and higher current is needed; not a drop-in replacement for MAX15462BATA+T's 5V fixed function. |
Compared with LMR36506RNXR and TPS54332DR, the MAX15462BATA+T offers superior integration (no external compensation, fixed 5V, RESET, soft-start), lower IQ (2.2µA vs. 26µA/4.5mA), and optimized thermal performance in a 2mm × 2mm TDFN - making it ideal for space-constrained industrial 5V PoL applications.
Availability
MAX15462BATA+T is available at Aetrix Electronics and suitable for industrial sensors, 4–20mA current loops, and HVAC control systems requiring stable component supply, extended temperature support, and long-term manufacturing continuity.
Supply support for MAX15462BATA+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 technologies, serving industrial, automotive, communications, and healthcare markets.
The MAX15462 series was designed specifically for ultra-compact, high-efficiency point-of-load conversion in harsh industrial environments - emphasizing wide-input capability, integrated protection, and minimal external component count.
FAQ
What output voltage does the MAX15462BATA+T deliver?
The MAX15462BATA+T delivers a factory-trimmed fixed 5.0V output with ±2% regulation over load (0–300mA), line (4.5V–42V), and temperature (–40°C to +125°C). This is confirmed in the Electrical Characteristics table under "VOUT Regulation Voltage" for MAX15462B, where typical values range from 4.93V to 5.18V depending on MODE pin state and conditions. No external feedback resistors are required.
Does the MAX15462BATA+T support both PWM and PFM modes?
Yes, the MAX15462BATA+T supports both modes via the MODE pin. When MODE is grounded at power-up, it operates in forced-PWM mode with fixed 500kHz switching frequency across all loads. When MODE is left unconnected, it defaults to PFM mode - skipping pulses at light loads to achieve >85% efficiency at 10mA while disabling negative inductor current.
What is the purpose of the RESET pin on the MAX15462BATA+T?
The RESET pin on the MAX15462BATA+T is an open-drain output that monitors the 5V output rail. It asserts low when VOUT falls below 92% of nominal (e.g., <4.6V) and releases to high-impedance 2ms after VOUT rises above 95% (e.g., >4.75V). This provides reliable power-good signaling for microcontrollers or FPGA configuration sequences without external supervision circuitry.
Can the MAX15462BATA+T start up into a prebiased output?
Yes, the MAX15462BATA+T supports monotonic startup into a prebiased output in both PFM and forced-PWM modes. During soft-start, the internal error amplifier reference ramps up while the FB/VOUT pin senses the existing output voltage - preventing reverse current flow and avoiding discharge of the output capacitor. This is essential for systems with multiple power rails sequencing independently.
What thermal protection features does the MAX15462BATA+T include?
The MAX15462BATA+T includes thermal shutdown at +166°C (rising) with 10°C hysteresis, ensuring safe operation under overload or poor airflow. It also features hiccup-mode overcurrent protection that disables switching and retries after a 131ms timeout when runaway current limit (0.58A–0.73A) is exceeded - preventing sustained thermal stress and enabling self-recovery without manual reset.
MAX15462BATA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Himalaya
- 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):
- 4.5V
- Voltage - Input (Max):
- 42V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 300mA
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (2x2)
MAX15462BATA+T FAQ
1.How can I place an order for MAX15462BATA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX15462BATA+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 MAX15462BATA+T reliable?
The price and inventory of MAX15462BATA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX15462BATA+T is usually 5 days.
3.What payment methods are accepted for MAX15462BATA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX15462BATA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX15462BATA+T?
MAX15462BATA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX15462BATA+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 MAX15462BATA+T?
For technical support, including MAX15462BATA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX15462BATA+T requirements.
6.How does Aetrix verify that MAX15462BATA+T is sourced from the original manufacturer or authorized distributors?
All MAX15462BATA+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 MAX15462BATA+T meets industry standards.
7.What is the process for return or replacement of MAX15462BATA+T?
All MAX15462BATA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX15462BATA+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 MAX15462BATA+T part is unused and in its original packaging.
Return procedure for MAX15462BATA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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