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Analog Devices Inc./Maxim Integrated MAX17580ATC+
- Part No.:
- MAX17580ATC+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX17580ATC+.pdf
- Description:
- IC REG BUCK ADJ 300MA 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:474
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Product details
Overview
The MAX17580ATC+ from Analog Devices is a high-voltage, synchronous, inverting DC-DC converter IC with integrated MOSFETs, peak current-mode control, and internal compensation. It delivers up to 300mA output current, supports adjustable negative output voltages from –0.9V to –36V, operates across a 4.5V to (60V – |VOUT|) input range, and achieves 88.4% peak efficiency-used in industrial gate-drive circuits and high-voltage single-board systems.
For engineers reviewing the MAX17580ATC+ datasheet, MAX17580ATC+ pinout, MAX17580ATC+ application, or MAX17580ATC+ equivalent, key selection considerations include its DCM light-load efficiency mode, system-ground-referenced EN/UVLO/RESET pins, ±1.3% FB regulation accuracy over –40°C to +125°C, and 3mm × 3mm TDFN-EP package with exposed thermal pad.
Technical Context
The MAX17580ATC+ implements peak current-mode control with internal loop compensation and operates exclusively in discontinuous conduction mode (DCM) for superior light-load efficiency. Its architecture integrates high-side and low-side nMOSFETs (RDS-ONH = 0.975Ω typ, RDS-ONL = 0.443Ω typ) and features a dedicated SOUT reference node for Kelvin feedback sensing.
It supports external frequency programming (400kHz–2.2MHz) or synchronization via the RT/SYNC pin, uses a 5V internal LDO (VCC) referenced to SOUT, and includes hiccup-mode overload protection triggered at VFB-HICF = 0.58V with 32,768-cycle timeout. The device also provides monotonic startup into prebiased outputs and built-in RESET monitoring with 92–95% VFB thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Inverting synchronous buck-boost converter with integrated high- and low-side nMOSFETs |
| Input Voltage Range | 4.5V to (60V – |VOUT|); enables operation with 24V input delivering –15V output at up to 45V max input |
| Output Voltage Range | Adjustable from –0.9V to –36V via FB resistor divider; supports precise negative rail generation |
| Max Output Current | 300mA continuous; limited by internal MOSFET RDS-ON and thermal design in TDFN-EP package |
| Switching Frequency | 400kHz–2.2MHz programmable via RT/SYNC resistor; 600kHz default with open pin |
| Efficiency | 88.4% peak; DCM operation minimizes switching losses at light loads (<50mA) |
| Regulation Accuracy | ±1.3% over –40°C to +125°C ambient; ensures stable negative rail under industrial temperature stress |
| Shutdown Current | 6.2μA; enables ultra-low-power standby in battery-backed or energy-sensitive systems |
Pinout & Package
The MAX17580ATC+ is housed in a compact 12-pin TDFN-EP package (3mm × 3mm, 0.75mm height) with exposed thermal pad (EP) connected to SOUT for enhanced heat dissipation. Thermal resistance is θJA = 41°C/W on a four-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power input | Accepts 4.5V–(60V–|VOUT|); requires ≥1μF X7R ceramic decoupling close to pin |
| EN/UVLO | Enable & input UVLO | System-ground-referenced; rising threshold 1.229V enables turn-on without level shifters |
| RESET | Open-drain status output | Pulls low when VFB < 92%; asserts after 1024 cycles when VFB > 95%; requires external 10kΩ pullup |
| SS | Soft-start timing | Capacitor-to-SOUT sets ramp time; prevents inrush into prebiased outputs |
| VCC | Internal 5V LDO output | Supplies internal circuitry; bypassed with 2.2μF ceramic to SOUT; not for external loading |
| RT/SYNC | Freq. programming / sync | Resistor-to-SOUT sets fSW; accepts external clock (1.1–1.4× fSW) with AC coupling |
| FB | Voltage feedback input | Monitors negative output via resistor divider; ±1.3% accuracy over full temp range |
| SOUT | Reference node | Kelvin sense return for control loop; connects to output capacitor negative and EP |
| GND | System ground | Power ground plane connection point; star-ground layout recommended |
| BST | Bootstrap supply | 0.1μF ceramic between BST and LX powers high-side driver; critical for MOSFET gate drive |
| LX | Switching node | Connects to inductor switch node; high-impedance during shutdown; handles 0.53A RMS |
| OUT | Negative output terminal | Low-side MOSFET source node; connects directly to output capacitor and load return |
Key Features
| Feature | Design Value |
|---|---|
| Discontinuous Conduction Mode (DCM) | Enables >15% higher efficiency at 10mA load vs. CCM, reducing quiescent power in always-on industrial sensors |
| System-Ground-Referenced I/O Pins | EN/UVLO, RESET, and RT/SYNC all referenced to GND-eliminates need for external level shifters in PLC I/O modules |
| Integrated High- and Low-Side MOSFETs | RDS-ONH = 0.975Ω / RDS-ONL = 0.443Ω typ reduces BOM count and PCB area vs. discrete FET solutions |
| Programmable Soft-Start | Capacitor on SS pin controls startup dV/dt, preventing overshoot when powering op-amp bias rails |
| Hiccup-Mode Overcurrent Protection | 32,768-cycle shutdown timeout limits power dissipation during sustained short-circuit-critical for unattended motion controllers |
| Prebiased Output Startup | Prevents sinking current from existing negative rails (e.g., –5V legacy bus), enabling hot-swap capability |
Applications
| Industrial Gate-Drive Power | Motion Control Bias Rails |
|---|---|
Use Scenario: Generating isolated –12V gate drive for high-side IGBTs in servo motor inverters operating in harsh factory environments. IC Role / Device Role / Timing Role: Inverting DC-DC converter providing regulated negative bias voltage referenced to power ground, synchronized to system clock via RT/SYNC. Use Value: DCM mode maintains >82% efficiency at 20mA gate leakage current; system-ground-referenced EN/UVLO simplifies enable sequencing with PLC logic. | Use Scenario: Supplying precision –15V analog bias for position feedback amplifiers in CNC machine tool axes. IC Role / Device Role / Timing Role: Negative output regulator with ±1.3% FB accuracy and monotonic startup into prebiased rails, ensuring clean amplifier power-up. Use Value: 6.2μA shutdown current extends battery backup runtime; 3mm × 3mm TDFN-EP fits tight space constraints near encoder interfaces. |
| Wall-Transformer Replacement | High-Voltage Single-Board System |
Use Scenario: Replacing linear wall adapters in DIN-rail mounted IoT gateways requiring –5V for RS-485 transceivers. IC Role / Device Role / Timing Role: Compact inverting converter accepting 24V DC input from PoE-powered backplane and delivering regulated –5V at 300mA. Use Value: 88.4% peak efficiency reduces thermal load vs. linear regulators; hiccup-mode OCP protects against field wiring faults. | Use Scenario: Generating –24V auxiliary rail for analog front-end signal conditioning in high-voltage data acquisition cards (e.g., 1000V isolation barriers). IC Role / Device Role / Timing Role: High-input-voltage inverter supporting up to 36V input (for –24V output), with RESET monitoring for system health reporting. Use Value: Wide –40°C to +125°C operation ensures reliability in sealed enclosures; exposed pad improves thermal performance at 1.95W dissipation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar inverting DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17579ATC+ | Operates in continuous conduction mode (CCM); constant 600kHz switching; higher no-load current (3.6mA vs. 1.5mA) | Better suited for noise-sensitive applications requiring fixed-frequency EMI control; less efficient below 50mA load | Select MAX17579ATC+ only when constant-frequency operation is mandatory and light-load efficiency is secondary. |
| LM5180QDGSRQ1 | Automotive-grade flyback controller (AEC-Q100); external MOSFETs required; no integrated compensation; supports >65V input | Targeted at automotive infotainment power supplies; requires additional components for inverting configuration | Choose LM5180QDGSRQ1 only for AEC-Q100-compliant designs needing >60V input or flyback topology flexibility. |
Compared with MAX17579ATC+, the MAX17580ATC+ trades fixed-frequency stability for 40% lower no-load current and superior light-load efficiency-ideal for industrial sensors. Versus LM5180QDGSRQ1, it offers lower BOM count and faster design cycle but lacks automotive qualification and ultra-high input voltage support.
Availability
The MAX17580ATC+ is available at Aetrix Electronics and suitable for industrial control power supplies, gate-drive circuits, and high-voltage single-board systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX17580ATC+ 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 semiconductors, serving industrial, automotive, communications, and healthcare markets with precision power, sensing, and conversion technologies.
The MAX17580ATC+ belongs to the Himalaya series of high-voltage DC-DC converters designed specifically for cooler, smaller, and simpler industrial power-supply solutions-emphasizing integration, thermal robustness, and ease of use in harsh environments.
FAQ
What is the maximum input voltage supported by the MAX17580ATC+ for a –24V output?
The MAX17580ATC+ supports a maximum input voltage of 60V minus the absolute value of the output voltage. For a –24V output, the upper limit is 60V – 24V = 36V. This constraint ensures internal voltage ratings are not exceeded, particularly across the LX-to-OUT and BST-to-LX terminals. Operation above 36V with –24V output risks permanent damage per Absolute Maximum Ratings.
Does the MAX17580ATC+ require external compensation components?
No, the MAX17580ATC+ features internal loop compensation, eliminating the need for external Type-II or Type-III compensation networks. This simplifies design, reduces component count, and improves consistency across production units. All stability tuning is handled internally through the peak current-mode architecture and fixed compensation network optimized for the integrated MOSFETs and typical output capacitor ESR ranges.
How does the MAX17580ATC+ handle startup into a prebiased output?
The MAX17580ATC+ implements monotonic startup into prebiased outputs by holding both high-side and low-side MOSFETs off until the SS pin voltage exceeds the FB pin voltage. Only then does soft-start commence, allowing VFB to ramp smoothly to 0.9V while the output voltage tracks toward its target. This prevents reverse current flow and output voltage collapse during hot-swap events in systems with legacy negative rails.
What is the purpose of the SOUT pin on the MAX17580ATC+ and how must it be connected?
The SOUT pin on the MAX17580ATC+ serves as the reference node for the internal control circuitry-including the error amplifier, current-sense amplifier, and RESET comparator-and must be connected to the negative terminal of the output capacitor using a Kelvin sense path. It is also tied directly to the exposed thermal pad (EP). This configuration ensures accurate feedback sensing independent of PCB trace IR drop and maximizes thermal performance through direct copper plane coupling.
Can the MAX17580ATC+ be synchronized to an external clock, and what are the timing requirements?
Yes, the MAX17580ATC+ can be synchronized to an external clock applied to the RT/SYNC pin. The external clock frequency must fall within 1.1× to 1.4× the resistor-programmed switching frequency. Pulse width must exceed 100ns, and duty cycle must be between 10% and 90%. The clock must be AC-coupled, and amplitude depends on duty cycle-e.g., >1.3V peak-to-peak for 20–80% duty cycle-to ensure reliable edge detection without false triggering.
MAX17580ATC+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Himalaya
- Package/Case:
- 12-WFDFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Negative
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- -0.9V
- Voltage - Output (Max):
- -36V
- Current - Output:
- 300mA
- Frequency - Switching:
- 400kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TDFN (3x3)
MAX17580ATC+ FAQ
1.How can I place an order for MAX17580ATC+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17580ATC+ 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 MAX17580ATC+ reliable?
The price and inventory of MAX17580ATC+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17580ATC+ is usually 5 days.
3.What payment methods are accepted for MAX17580ATC+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17580ATC+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17580ATC+?
MAX17580ATC+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17580ATC+ 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 MAX17580ATC+?
For technical support, including MAX17580ATC+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17580ATC+ requirements.
6.How does Aetrix verify that MAX17580ATC+ is sourced from the original manufacturer or authorized distributors?
All MAX17580ATC+ 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 MAX17580ATC+ meets industry standards.
7.What is the process for return or replacement of MAX17580ATC+?
All MAX17580ATC+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX17580ATC+, 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 MAX17580ATC+ part is unused and in its original packaging.
Return procedure for MAX17580ATC+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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