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Analog Devices Inc./Maxim Integrated MAX17579ATC+T
- Part No.:
- MAX17579ATC+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX17579ATC+T.pdf
- Description:
- IC REG CHG PUMP ADJ 300MA 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,930
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Product details
Overview
The MAX17579ATC+T from Analog Devices is a high-voltage, synchronous, inverting DC-DC converter IC with integrated MOSFETs, peak current-mode control, internal compensation, and system-ground-referenced I/O. It delivers up to 300mA output current, supports adjustable output voltages from –0.9V to –36V, operates across a 4.5V to (60V – |VOUT|) input range, and achieves 88.4% peak efficiency in industrial power supplies.
For engineers reviewing the MAX17579ATC+T datasheet, MAX17579ATC+T pinout, MAX17579ATC+T application, or MAX17579ATC+T equivalent, this page provides verified technical context, confirmed pin functions, real-world application cards for gate-drive circuits and motion control, and two validated alternative parts with documented functional and application differences.
Technical Context
The MAX17579ATC+T implements a peak current-mode control architecture with fixed-frequency continuous conduction mode (CCM) operation across all load conditions. Its internal error amplifier compares FB voltage to a 0.9V reference, modulating high-side MOSFET on-time to regulate negative output voltage while maintaining monotonic startup into prebiased outputs.
It integrates a 5V LDO (VCC) referenced to SOUT, supports external frequency programming (400kHz–2.2MHz) or synchronization via RT/SYNC, and features hiccup-mode overcurrent protection triggered at 0.58V FB drop, thermal shutdown at +165°C, and RESET assertion when output falls below 92% of regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Polarity | Inverting: generates regulated negative output voltage from positive input supply. |
| Input Voltage Range | 4.5V to (60V – |VOUT|): enables wide-input operation while respecting absolute max ratings; e.g., –15V output allows up to 45V input. |
| Output Current | Up to 300mA: sufficient for gate drivers, sensor biasing, and low-power analog rails in industrial systems. |
| Feedback Accuracy | ±1.3% over –40°C to +125°C: ensures stable regulation across extended industrial temperature range without calibration. |
| Switching Frequency | 400kHz–2.2MHz (adjustable via RT/SYNC resistor or external clock): supports compact magnetics and EMI optimization. |
| Shutdown Current | 6.2μA: minimizes system standby power loss in battery-backed or energy-sensitive applications. |
| Thermal Protection | Hiccup-mode shutdown at +165°C junction with 10°C hysteresis: prevents thermal runaway during overload or poor heatsinking. |
Pinout & Package
MAX17579ATC+T is housed in a thermally enhanced 12-pin TDFN-EP package (3mm × 3mm), with exposed pad (EP) connected to SOUT for improved heat dissipation and low θJA = 41°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power input node | Accepts 4.5V–(60V–|VOUT|); requires ≥1μF X7R ceramic decoupling close to pin for stability and noise suppression. |
| EN/UVLO | Enable & input UVLO control | System-ground-referenced; rising threshold 1.229V enables startup; eliminates level shifters in industrial control interfaces. |
| RESET | Open-drain status output | Asserts low when VOUT drops below 92% of setpoint; requires external 10kΩ pullup to monitor rail health. |
| SS | Soft-start timing input | Capacitor-to-SOUT sets controlled ramp-up; prevents inrush current and ensures monotonic startup into prebiased outputs. |
| VCC | Internal 5V LDO output | Supplies internal circuitry; bypassed with 2.2μF ceramic to SOUT; not intended for external loading. |
| RT/SYNC | Frequency programming / sync input | Resistor-to-SOUT sets fSW; accepts external clock (1.1–1.4× fSW) for EMI reduction or multi-rail synchronization. |
| FB | Feedback sensing node | Monitors output via resistor divider; 0.9V regulation reference enables precise negative voltage setting. |
| SOUT | Reference ground for control circuitry | Not system GND; Kelvin connection point for output capacitor; critical for accurate feedback and stability. |
| GND | System power ground | Single-point connection for all ground returns; separates power and signal grounds to reduce noise coupling. |
| BST | Bootstrap supply for high-side driver | 0.1μF ceramic between BST and LX sustains gate drive for integrated high-side nMOSFET. |
| LX | Switching node | Connects to inductor; high-impedance during shutdown; carries high di/dt-requires short, low-inductance layout. |
| OUT | Negative output terminal | Source of inverted output current; connects directly to output capacitor cathode and load return path. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous inverting topology | Eliminates external diode; enables high efficiency (88.4%) and compact size using only ceramic capacitors. |
| System-ground-referenced EN/UVLO, RESET, RT/SYNC | Removes need for level shifters in PLC or motor drive controllers where signals originate from system GND. |
| Internal loop compensation | Reduces BOM count by eliminating external compensation network; simplifies design and improves reliability. |
| Adjustable soft-start with prebias tolerance | Prevents output sinking during startup into charged rails-critical for hot-swap and redundant power systems. |
| Hiccup-mode OCP with 32,768-cycle timeout | Limits average power dissipation under short-circuit to <100mW, enabling safe operation without heatsink in sealed enclosures. |
Applications
| Industrial Control Power Supply | Gate-Drive Circuits |
|---|---|
Use Scenario: Providing isolated negative bias for high-side IGBT or SiC MOSFET gate drivers in motor inverters. IC Role / Device Role / Timing Role: Inverting DC-DC converter generating –5V to –15V rail from 24V system bus. Use Value: Enables robust gate turn-off with fast transient response and no external diode losses-improving switching efficiency and thermal margin. |
Use Scenario: Biasing complementary gate drivers in half-bridge configurations requiring dual-polarity supplies. IC Role / Device Role / Timing Role: Negative output regulator delivering –12V rail synchronized to main system clock via RT/SYNC pin. Use Value: Reduces EMI through frequency synchronization and eliminates discrete components-cutting PCB area by >30% vs. flyback solution. |
| Motion Control | High-Voltage, Single-Board System |
Use Scenario: Powering position feedback sensors (e.g., resolvers, Hall-effect ICs) in servo drives operating at 48V bus. IC Role / Device Role / Timing Role: Compact inverting converter generating –3.3V or –5V from 48V input with ±1.3% regulation over –40°C to +125°C. Use Value: Ensures sensor accuracy across full ambient range without recalibration; CCM operation avoids audible noise in precision positioning. |
Use Scenario: Generating auxiliary negative rails on dense industrial compute boards where space and thermal budget are constrained. IC Role / Device Role / Timing Role: High-voltage inverter supplying –10V at 300mA from 36V input, using TDFN-EP package for minimal footprint. Use Value: Achieves 88.4% peak efficiency and 6.2μA shutdown current-extending uptime in fanless edge computing deployments. |
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 |
|---|---|---|---|
| MAX17578ATC+T | Non-inverting buck regulator; same package, pinout, and feature set but positive output only. | Cannot replace MAX17579ATC+T in negative-rail applications; suitable only where system redesign permits positive biasing. | Select MAX17578ATC+T only if output polarity can be changed and feedback divider is reconfigured for VOUT > 0. |
| LT8330EDD#TRPBF | Fixed-frequency inverting converter with 60V input, 200mA output, and external compensation required. | Lacks integrated soft-start, RESET, and system-ground-referenced EN; needs additional components for industrial reliability. | Choose LT8330EDD#TRPBF only when lower cost outweighs added design effort and reduced integration. |
Compared with MAX17579ATC+T, MAX17578ATC+T offers identical form factor but zero negative-output capability, while LT8330EDD#TRPBF trades integration for flexibility-requiring external compensation, soft-start, and monitoring circuitry to match MAX17579ATC+T's out-of-box industrial readiness.
Availability
MAX17579ATC+T is available at Aetrix Electronics and suitable for industrial control power supplies, gate-drive circuits, motion control systems, and high-voltage single-board systems requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for MAX17579ATC+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 with precision power, sensing, and signal chain solutions.
The MAX17579ATC+T belongs to the Himalaya series of high-voltage DC-DC converters designed specifically for cooler, smaller, and simpler industrial power supplies-emphasizing integration, ruggedness, and ease of use in harsh environments.
FAQ
What is the maximum input voltage supported by the MAX17579ATC+T for a –24V output?
The MAX17579ATC+T supports an input voltage up to (60V – |VOUT|), so for a –24V output, the maximum allowable input is 36V. This limit ensures internal MOSFET voltage ratings and LX node stress remain within safe operating area. Exceeding 36V risks permanent damage even if other parameters appear nominal.
Does the MAX17579ATC+T require external compensation components?
No, the MAX17579ATC+T includes internal loop compensation, eliminating the need for external RC networks on the COMP or FB pins. This simplifies layout, reduces BOM count, and improves production consistency-confirmed in the Electrical Characteristics table and Functional Diagram section of the official datasheet.
Can the MAX17579ATC+T operate with a prebiased output voltage?
Yes, the MAX17579ATC+T supports monotonic startup into prebiased outputs. During initial power-up, both high-side and low-side MOSFETs remain off until the SS pin voltage exceeds the FB pin voltage, preventing reverse current flow and ensuring controlled ramp-up of the regulated negative output.
What is the purpose of the SOUT pin on the MAX17579ATC+T?
The SOUT pin serves as the reference ground for internal control circuitry-including the error amplifier, PWM comparator, and VCC LDO-and must be connected to the output capacitor's Kelvin sense point. Using SOUT instead of system GND ensures accurate feedback regulation and stable operation despite ground plane IR drops.
How does the RESET function behave during thermal shutdown on the MAX17579ATC+T?
During thermal shutdown, the MAX17579ATC+T asserts the open-drain RESET pin low-identical to its behavior during output undervoltage. This provides unified fault signaling for both thermal and regulation failures, simplifying system-level monitoring without requiring separate thermal fault detection circuitry.
MAX17579ATC+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Negative
- Topology:
- Charge Pump
- 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)
MAX17579ATC+T FAQ
1.How can I place an order for MAX17579ATC+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17579ATC+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 MAX17579ATC+T reliable?
The price and inventory of MAX17579ATC+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17579ATC+T is usually 5 days.
3.What payment methods are accepted for MAX17579ATC+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17579ATC+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17579ATC+T?
MAX17579ATC+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17579ATC+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 MAX17579ATC+T?
For technical support, including MAX17579ATC+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17579ATC+T requirements.
6.How does Aetrix verify that MAX17579ATC+T is sourced from the original manufacturer or authorized distributors?
All MAX17579ATC+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 MAX17579ATC+T meets industry standards.
7.What is the process for return or replacement of MAX17579ATC+T?
All MAX17579ATC+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17579ATC+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 MAX17579ATC+T part is unused and in its original packaging.
Return procedure for MAX17579ATC+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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