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Analog Devices Inc./Maxim Integrated MAX17760ATC+
- Part No.:
- MAX17760ATC+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX17760ATC+.pdf
- Description:
- IC REG BUCK ADJ 300MA 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,478
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Product details
Overview
The MAX17760ATC+ from Analog Devices is a Himalaya-series synchronous step-down DC-DC converter IC with integrated high-side pMOS and low-side nMOS FETs, operating across 4.5V–76V input and delivering up to 300mA output current. It supports programmable output voltage from 0.8V to 88% of VIN, features peak-current-mode control, and achieves 93% peak efficiency in industrial power supplies.
For engineers reviewing the MAX17760ATC+ datasheet, MAX17760ATC+ pinout, MAX17760ATC+ application, or MAX17760ATC+ equivalent, this device is selected for high-voltage point-of-load regulation where wide input range, internal compensation, PFM/PWM mode flexibility, EXTVCC efficiency boost, and -40°C to +125°C operation are critical design requirements.
Technical Context
The MAX17760ATC+ implements a peak-current-mode control architecture with internal transconductance error amplifier, slope compensation, and cycle-by-cycle current limiting. Its MODE pin latches PWM or PFM operation at power-up-PWM enables constant-frequency switching across all loads, while PFM skips pulses and suppresses negative inductor current to reduce light-load quiescent current to 75μA.
It integrates dual LDOs (INT-LDO powered from VIN, EXT-LDO powered from EXTVCC) with automatic switchover at ~4.74V; VCC output is regulated to 5V ±5% with 4.75V–5.25V range over load and temperature. The device includes hiccup-mode overload protection (51ms timeout), thermal shutdown at 160°C, and RESET assertion when FB falls below 92% of regulation threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 76V - supports direct connection to industrial 24V/48V rails and telecom 48V/72V systems without pre-regulation. |
| Output Current | Up to 300mA - sufficient for powering microcontrollers, sensors, and interface ICs in distributed supply architectures. |
| Feedback Regulation Accuracy | +1.6% / −1.7% over −40°C to +125°C - ensures stable output under extreme ambient conditions without external trimming. |
| Switching Frequency | 200kHz to 600kHz, programmable via RT/SYNC resistor - enables EMI optimization and inductor size reduction. |
| Shutdown Current | 5μA typical - minimizes system standby power in battery-backed or energy-sensitive applications. |
| Peak Efficiency | 93% - achieved via synchronous rectification and low RDS(on) (1.8Ω high-side, 0.55Ω low-side) MOSFETs. |
| Operating Temperature | −40°C to +125°C ambient - qualified for industrial control, base station, and automotive under-hood environments. |
Pinout & Package
MAX17760ATC+ is housed in a thermally enhanced 12-pin TDFN package (3mm × 3mm, TD1233+1C), with exposed pad (EP) connected to SGND for improved thermal dissipation (θJA = 41°C/W on four-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-voltage input supply | Accepts 4.5V–76V; requires local 1μF ceramic decoupling to PGND for stability and EMI suppression. |
| PGND | Power ground return | Low-impedance path for high di/dt LX current; must be routed separately from SGND to minimize noise coupling. |
| VCC | Internal 5V LDO output | Powers internal logic and gate drivers; bypassed with 1μF ceramic capacitor; not intended for external loading. |
| EN/UVLO | Enable and input undervoltage lockout | Configurable turn-on threshold (1.215V typ); connect to resistor divider from VIN to set precise UVLO level. |
| RESET | Open-drain power-good monitor | Asserts low when FB drops below 92% of target; deasserts after 2.1ms delay when FB rises above 95%. |
| RT/SYNC | Frequency programming & clock sync | Set switching frequency (200–600kHz) with resistor to SGND; accepts external clock via 22pF AC coupling. |
| EXTVCC | External LDO input | Connect to output rail (5V–24V) to improve efficiency; internal switchover occurs at 4.74V typical. |
| FB | Output voltage feedback node | Monitors resistive divider from VOUT to SGND; regulation setpoint is 0.802V ±1.5% over temperature. |
| SS | Soft-start timing input | Capacitor from SS to SGND sets ramp time; internal 5μA charging current enables controlled output rise. |
| MODE | Control mode selection | Unconnected = PFM (light-load efficiency); tied to SGND = forced PWM (constant frequency, EMI-controlled). |
| SGND | Signal ground reference | Reference for FB, SS, MODE, RT/SYNC, RESET; must be connected to PGND only at single point (star ground). |
| LX | Switching node | Drives external inductor; high di/dt node requiring short, wide copper pour and minimized loop area. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode; reduces conduction loss and improves full-load efficiency by >8% vs. asynchronous designs. |
| Internal loop compensation | Removes need for external Type-II/III compensation network - simplifies layout and reduces BOM count by ≥3 components. |
| Programmable PFM/PWM mode | Enables dynamic trade-off between light-load efficiency (PFM: 75μA IQ) and EMI predictability (PWM: fixed fSW). |
| EXTVCC efficiency boost | Switches VCC supply from VIN to output rail above 4.74V, reducing power dissipation in high-VIN operation (e.g., 48V→5V). |
| Hiccup-mode overload protection | Enters 51ms timeout after 16 consecutive current-limit events - prevents thermal runaway during sustained short-circuit. |
| CISPR 22 Class B compliance | Meets conducted and radiated EMI limits for industrial equipment without additional filtering in typical layouts. |
Applications
| Industrial Control Power Supplies | Base Station Power Supplies |
|---|---|
Use Scenario: Powering PLC I/O modules, fieldbus transceivers, and analog sensor signal chains in factory automation cabinets with 24V/48V backplanes. IC Role / Device Role / Timing Role: Primary point-of-load regulator converting 48V distributed rail to 3.3V/5V for microcontrollers and ADCs. Use Value: Wide 4.5V–76V input handles brownouts and surges; internal compensation accelerates design cycle; 93% efficiency reduces heat sink requirements. |
Use Scenario: Generating bias voltages for RF front-end amplifiers, clock buffers, and FPGA configuration circuits in 5G macrocell base stations. IC Role / Device Role / Timing Role: Secondary regulator deriving 1.2V/1.8V/3.3V from 48V telecom supply, synchronized to system clock via RT/SYNC pin. Use Value: External clock synchronization eliminates beat frequencies; PFM mode cuts standby power during low-traffic periods; −40°C to +125°C rating ensures reliability in outdoor enclosures. |
| Wall Transformer Regulation | High Voltage Single-Board Systems |
Use Scenario: Replacing linear regulators in universal-input wall adapters (90–264VAC rectified to ~12–375VDC) powering IoT gateways and smart home hubs. IC Role / Device Role / Timing Role: High-voltage buck stage stepping down unregulated DC to 5V/12V before final LDO regulation. Use Value: 76V absolute max input withstands 375VDC transient spikes; 5μA shutdown current meets Energy Star Level VI standby requirements. |
Use Scenario: On-board power conversion in test equipment, motor drives, and HV data acquisition systems where space-constrained PCBs integrate 48V/72V inputs. IC Role / Device Role / Timing Role: Compact, self-contained DC-DC solution replacing discrete controllers + external MOSFETs + compensation network. Use Value: 3mm × 3mm TDFN footprint saves >60% board area vs. QFN alternatives; EXTVCC operation improves efficiency at 72V input by 4–6 percentage points. |
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 |
|---|---|---|---|
| LM5164QPWPRQ1 | 4.5V–65V input, 300mA, integrated FETs, but uses voltage-mode control and lacks EXTVCC input or hiccup-mode protection. | Automotive AEC-Q100 qualified; better suited for automotive body electronics than industrial base stations. | Choose LM5164QPWPRQ1 only if AEC-Q100 qualification is mandatory and hiccup protection is not required. |
| TPS54340DDAR | 3.5V–42V input, 3.5A output, external MOSFETs, no internal compensation, no PFM mode, higher quiescent current (146μA). | Higher output current capability; designed for cost-sensitive consumer power supplies rather than high-voltage industrial PoL. | Choose TPS54340DDAR only when >300mA output is needed and external component count is acceptable. |
Compared with LM5164QPWPRQ1 and TPS54340DDAR, the MAX17760ATC+ uniquely combines ultra-wide 4.5V–76V input, internal compensation, EXTVCC efficiency enhancement, and hiccup-mode protection in a 3mm × 3mm package-making it optimal for space-constrained, high-reliability industrial and telecom applications where input transients and thermal management are critical.
Availability
MAX17760ATC+ is available at Aetrix Electronics and suitable for industrial control power supplies, base station power supplies, and high-voltage single-board systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX17760ATC+ 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 MAX17760ATC+ belongs to the Himalaya series of high-voltage DC-DC converters, engineered specifically for cooler, smaller, and simpler industrial and telecom power supply designs requiring wide input range and robust protection features.
FAQ
What is the maximum output voltage achievable with the MAX17760ATC+?
The MAX17760ATC+ supports an output voltage range from 0.8V up to 88% of the input voltage (VIN). For example, with a 76V input, the maximum programmable output is 66.9V. This is implemented using a resistive feedback divider referenced to the 0.802V internal FB regulation voltage, and the upper limit is enforced by internal duty-cycle clamping at 88%.
Does the MAX17760ATC+ require external compensation components?
No, the MAX17760ATC+ integrates full control loop compensation internally. Its peak-current-mode architecture with built-in transconductance error amplifier and slope compensation eliminates the need for external Type-II or Type-III compensation networks-reducing design complexity, PCB area, and bill-of-materials cost compared to controller-only solutions.
How does the EXTVCC pin improve efficiency in the MAX17760ATC+?
The EXTVCC pin allows the MAX17760ATC+ to power its internal 5V VCC LDO from the output rail instead of VIN when EXTVCC exceeds 4.74V. This reduces power dissipation in the LDO, especially at high input voltages (e.g., 48V or 72V), improving overall converter efficiency by 4–6 percentage points versus VIN-powered operation.
Can the MAX17760ATC+ operate in both PWM and PFM modes simultaneously?
No-the MAX17760ATC+ latches into either forced PWM or PFM mode at power-up based on the MODE pin state and cannot switch dynamically. MODE tied to SGND selects constant-frequency PWM for EMI-sensitive applications; leaving MODE unconnected selects PFM for superior light-load efficiency. Mode selection is static and non-reconfigurable after startup.
What protection features are integrated into the MAX17760ATC+?
The MAX17760ATC+ integrates hiccup-mode overcurrent protection (51ms timeout after 16 current-limit events), thermal shutdown at 160°C with 20°C hysteresis, input undervoltage lockout (adjustable via EN/UVLO), output voltage monitoring with open-drain RESET, and prebiased soft-start. These features ensure robust operation in harsh industrial environments without external circuitry.
MAX17760ATC+ 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:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 76V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 66.88V
- Current - Output:
- 300mA
- Frequency - Switching:
- 200kHz, 300kHz, 400kHz, 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TDFN (3x3)
MAX17760ATC+ FAQ
1.How can I place an order for MAX17760ATC+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17760ATC+ 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 MAX17760ATC+ reliable?
The price and inventory of MAX17760ATC+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17760ATC+ is usually 5 days.
3.What payment methods are accepted for MAX17760ATC+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17760ATC+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17760ATC+?
MAX17760ATC+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17760ATC+ 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 MAX17760ATC+?
For technical support, including MAX17760ATC+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17760ATC+ requirements.
6.How does Aetrix verify that MAX17760ATC+ is sourced from the original manufacturer or authorized distributors?
All MAX17760ATC+ 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 MAX17760ATC+ meets industry standards.
7.What is the process for return or replacement of MAX17760ATC+?
All MAX17760ATC+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX17760ATC+, 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 MAX17760ATC+ part is unused and in its original packaging.
Return procedure for MAX17760ATC+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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