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Analog Devices Inc./Maxim Integrated MAX5080ATE+
- Part No.:
- MAX5080ATE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX5080ATE+.pdf
- Description:
- IC REG BUCK ADJ 1A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:272
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Product details
Overview
MAX5080ATE+ from Maxim Integrated is a 250kHz voltage-mode PWM step-down DC-DC converter with an integrated 0.3Ω high-side MOSFET switch, supporting 4.5V–40V input and delivering up to 1A output current at adjustable 1.23V–32V. It features external frequency synchronization (150–350kHz), pulse-skip mode for light-load efficiency, and operates across –40°C to +125°C - used in industrial power supplies and distributed power architectures.
For engineers reviewing the MAX5080ATE+ datasheet, MAX5080ATE+ pinout, MAX5080ATE+ application, or MAX5080ATE+ equivalent, key selection considerations include its 0.3Ω RDS(ON), programmable UVLO via ON/OFF pin, 1.23V FB reference, thermal shutdown at +160°C, and TQFN-16 package compatibility with high-power density layouts.
Technical Context
The MAX5080ATE+ implements voltage-mode control with internal 250kHz oscillator and external ramp feedforward compensation, enabling stable loop design across wide VIN ranges. Its error amplifier delivers 80dB open-loop gain and 1.8MHz GBW, with COMP pin accessible for custom Type II/III compensation networks.
It integrates a charge-pump-based gate driver (C+/C− pins) to sustain high-side NMOS operation down to 4.5V input, while offering hiccup-mode short-circuit protection triggered after seven consecutive current-limit events and thermal shutdown with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 40V - supports wide industrial input rails including 5V, 12V, 24V, and 36V systems without external pre-regulation. |
| Output Current | Up to 1A continuous - sufficient for powering microcontrollers, sensors, and interface ICs in embedded systems. |
| Switch RDS(ON) | 0.3Ω (typ) - reduces conduction loss and enables >84% efficiency at 12V→3.3V/1A operation. |
| FB Reference Voltage | 1.228V (typ) - sets output accuracy and enables precise regulation via resistive divider (e.g., 3.3V ±1.5%). |
| Switching Frequency | 225–275kHz (typ 250kHz) - balances EMI, inductor size, and efficiency; synchronizable to external 150–350kHz clock. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive auxiliary rails and industrial control cabinets. |
| Thermal Shutdown | +160°C with 20°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
Pinout & Package
MAX5080ATE+ is housed in a 5mm × 5mm, 16-pin TQFN package (exposed pad) rated for 2.7W power dissipation and θJA = 30°C/W. The package supports high-current routing via dual LX (pins 11/12) and dual IN (pins 13/14) connections, and requires SGND–PGND single-point connection near input capacitor.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (COMP) | Error amplifier output | Connects to external RC network for loop compensation; determines stability and transient response. |
| 2 (FB) | Feedback regulation node | Senses output voltage via resistive divider; regulates VOUT to 1.228V reference with ±5mV offset. |
| 3 (ON/OFF) | Enable/UVLO control | Rising threshold = 1.23V; enables power sequencing and programmable undervoltage lockout. |
| 4 (SS) | Soft-start & reference | Sources 15µA to CSS capacitor; ramps VREF linearly to prevent inrush current and overshoot. |
| 5 (SYNC) | External clock input | Accepts 150–350kHz square wave; synchronizes switching to avoid beat frequencies in multi-rail systems. |
| 6 (DVREG) | High-side gate driver supply | Connected externally to REG; powers bootstrap circuitry for NMOS high-side switch turn-on. |
| 7 (C+), 8 (C−) | Flying capacitor terminals | Form charge-pump stage to generate boosted gate drive; required only for MAX5080 (not MAX5081). |
| 9 (PGND) | Power ground | Return path for high-current inductor/diode paths; must be separated from SGND except at single point. |
| 10 (BST) | Bootstrap supply node | Connects to cathode of boost diode and CBST capacitor; provides >2×VDVREG gate drive voltage. |
| 11/12 (LX) | Switch node | Drain of internal high-side MOSFET; connects directly to inductor and freewheeling diode cathode. |
| 13/14 (IN) | Main power input | Supplies internal regulator, gate driver, and power switch; accepts 4.5V–40V with 45V absolute max rating. |
| 15 (REG) | Internal LDO output | 5V @ 20mA (typ); powers internal circuitry and DVREG; bypassed with ≥1µF ceramic capacitor. |
| 16 (SGND) | Signal ground | Reference for FB, COMP, SS, SYNC; exposed pad must be soldered to large SGND plane. |
Key Features
| Feature | Design Value |
|---|---|
| Voltage-mode PWM control | Enables robust noise immunity in high-voltage industrial environments and simplifies compensation vs. current-mode. |
| Programmable soft-start | 15µA constant-current source into external CSS capacitor allows precise control of startup slew rate and inrush limiting. |
| Pulse-skip (PFM) mode | Reduces no-load supply current to 1.4mA (typ), improving light-load efficiency without requiring external bias circuits. |
| Cycle-by-cycle current limit | Triggers at 1.4–2.6A (min–max); protects against short circuits and inductor saturation during fault conditions. |
| Hiccup-mode short-circuit protection | Shuts down for 512 clock cycles after 7 consecutive ILIM events - limits average power dissipation during sustained faults. |
Applications
| Industrial Power Supplies | FireWire® Power Delivery |
|---|---|
|
Use Scenario: Providing regulated 5V/3.3V rails from 24V factory bus in PLC I/O modules and motor drives. IC Role / Device Role / Timing Role: Primary buck regulator managing load transients up to 1A with <200µs recovery time and <300mV droop. Use Value: Integrated 0.3Ω switch and thermal shutdown enable compact, self-protected designs without discrete FETs or external protection ICs. |
Use Scenario: Generating +12V and +5V outputs from FireWire cable power for peripheral devices like digital cameras and audio interfaces. IC Role / Device Role / Timing Role: High-efficiency step-down converter operating at 250kHz to meet FireWire EMI requirements and minimize filter size. Use Value: Pulse-skip mode maintains >85% efficiency at 10mA load, extending battery life in portable FireWire peripherals. |
| Distributed Power Architectures | Automotive Auxiliary Systems |
|
Use Scenario: Local DC-DC conversion at point-of-load in telecom base stations and server backplanes with 48V intermediate bus. IC Role / Device Role / Timing Role: Secondary buck stage converting 48V to 3.3V/1.8V for FPGA I/O banks and SerDes power domains. Use Value: External SYNC input allows synchronization to system clock, eliminating subharmonic interference in multi-converter systems. |
Use Scenario: Powering infotainment head units and ADAS camera modules from 12V vehicle battery with cold-crank tolerance down to 4.5V. IC Role / Device Role / Timing Role: Input-stage buck converter sustaining operation during engine start (≥4.5V) with programmable UVLO to prevent brownout resets. Use Value: Wide VIN range and –40°C to +125°C rating ensure reliable function across automotive temperature and voltage extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QWRGERQ1 | 4.5V–65V input, 1A, 2.2MHz fixed-frequency, no integrated charge pump; requires external bootstrap diode. | Better suited for higher-frequency, lower-inductor-size designs; lacks C+/C− pins and PFM mode. | Select when board space is constrained and EMI filtering favors >2MHz switching over thermal performance. |
| TPS54202HDDCR | 4.5V–28V input, 2A, 2.2MHz, integrated high-side FET (RDS(ON) = 0.12Ω), no charge pump, no SYNC input. | Higher current capability but narrower VIN range; optimized for consumer-grade 12V/5V systems, not industrial 40V rails. | Choose for cost-sensitive, high-volume 12V-input applications where 40V tolerance and external sync are unnecessary. |
Compared with LM5164QWRGERQ1 and TPS54202HDDCR, the MAX5080ATE+ uniquely combines 40V input tolerance, integrated charge-pump gate drive for low-VIN operation, and external SYNC capability - making it optimal for ruggedized industrial and automotive auxiliary power where reliability across wide voltage and temperature ranges is critical.
Availability
MAX5080ATE+ is available at Aetrix Electronics and suitable for industrial power supplies, FireWire® power delivery, distributed power architectures, and automotive auxiliary systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX5080ATE+ 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
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX5080ATE+ belongs to Maxim's MAXPower™ family of high-voltage DC-DC converters, designed specifically for rugged, wide-input industrial and automotive power conversion where reliability, thermal robustness, and programmable protection are essential.
FAQ
What is the maximum input voltage rating for the MAX5080ATE+?
The MAX5080ATE+ has an absolute maximum input voltage rating of +45V on the IN pin, with recommended continuous operation from 4.5V to 40V. Exceeding 40V may reduce long-term reliability and is not guaranteed per specifications. The device includes internal undervoltage lockout that activates below 3.9V (rising) and thermal shutdown at +160°C to protect against overvoltage stress during transients.
Does the MAX5080ATE+ require external components for gate drive?
Yes - the MAX5080ATE+ requires external components for high-side gate drive: a bootstrap capacitor (CBST) between BST and LX, a flying capacitor (CF) between C+ and C−, and a boost diode from C+ to BST. These form the integrated charge-pump circuit enabling NMOS high-side switching down to 4.5V input. Omitting any of these components will prevent proper gate turn-on and cause failure to regulate.
How is the output voltage set on the MAX5080ATE+?
The output voltage of the MAX5080ATE+ is set using a resistive divider from VOUT to FB to SGND, where the FB pin regulates to 1.228V (typ). For example, to achieve 5V output, use R3 = 30.1kΩ (top) and R4 = 10kΩ (bottom), yielding VOUT = 1.228V × (1 + 30.1k/10k) ≈ 5.00V. The FB input current is ±250nA, minimizing divider current error and enabling high-impedance networks.
What protection features does the MAX5080ATE+ include?
The MAX5080ATE+ includes cycle-by-cycle current limiting (1.4–2.6A), hiccup-mode short-circuit protection (7-event trigger, 512-clock timeout), thermal shutdown (+160°C with 20°C hysteresis), programmable undervoltage lockout (via ON/OFF pin), and soft-start. It also features overvoltage clamp on BST (≤VIN + 12V) and LX (≤VIN + 0.3V) to safeguard against inductive kickback and layout-induced spikes.
Can the MAX5080ATE+ be synchronized to an external clock?
Yes - the MAX5080ATE+ supports external synchronization via the SYNC pin, accepting TTL/CMOS-compatible square waves from 150kHz to 350kHz. When driven, the device locks to the rising edge of the external clock and disables its internal 250kHz oscillator. This eliminates beat frequencies in multi-converter systems and simplifies EMI filter design by fixing the fundamental switching frequency.
MAX5080ATE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.23V
- Voltage - Output (Max):
- 32V
- Current - Output:
- 1A
- Frequency - Switching:
- 250kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (5x5)
MAX5080ATE+ FAQ
1.How can I place an order for MAX5080ATE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX5080ATE+ 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 MAX5080ATE+ reliable?
The price and inventory of MAX5080ATE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX5080ATE+ is usually 5 days.
3.What payment methods are accepted for MAX5080ATE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX5080ATE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX5080ATE+?
MAX5080ATE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX5080ATE+ 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 MAX5080ATE+?
For technical support, including MAX5080ATE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX5080ATE+ requirements.
6.How does Aetrix verify that MAX5080ATE+ is sourced from the original manufacturer or authorized distributors?
All MAX5080ATE+ 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 MAX5080ATE+ meets industry standards.
7.What is the process for return or replacement of MAX5080ATE+?
All MAX5080ATE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX5080ATE+, 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 MAX5080ATE+ part is unused and in its original packaging.
Return procedure for MAX5080ATE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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