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Analog Devices Inc./Maxim Integrated MAX16963SATEC/V+
- Part No.:
- MAX16963SATEC/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX16963SATEC/V+.pdf
- Description:
- IC REG BUCK ADJ 1.5A DL 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,107
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Product details
Overview
MAX16963SATEC/V+ from Maxim Integrated is a dual synchronous step-down DC-DC converter designed for automotive postregulation and point-of-load applications. It operates from 2.7V to 5.5V input, delivers up to 1.5A per output across 0.8V–3.6V adjustable output range, and features fixed 2.2MHz PWM mode with skip-mode operation for light-load efficiency. Its thermally enhanced 16-pin TQFN-EP package supports -40°C to +125°C operation.
For engineers reviewing the MAX16963SATEC/V+ datasheet, MAX16963SATEC/V+ pinout, MAX16963SATEC/V+ application, or MAX16963SATEC/V+ equivalent, key selection criteria include dual-output current capability (1.5A each), spread-spectrum EMI reduction, independent enable inputs, open-drain power-good outputs with 16ms delay, and factory-programmable SYNC I/O functionality.
Technical Context
The MAX16963SATEC/V+ integrates two independent synchronous buck regulators sharing a common 2.2MHz oscillator with ±6% spread-spectrum modulation. Each channel uses internal low-RDS(ON) pMOS/nMOS switches (90mΩ/68mΩ typ) and peak-current-mode control with 60ns minimum on-time.
It supports dual operating modes via the PWM pin: forced PWM for consistent noise spectrum and skip mode enabling 36µA quiescent current. The device implements independent soft-start (8ms), overcurrent protection (2.35A typ per channel), and thermal shutdown at 165°C with 15°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports wide automotive battery rail variation including cold-crank conditions. |
| Output Voltage Range | 0.8V to 3.6V adjustable - enables precise regulation for modern low-voltage SoCs and FPGAs. |
| Max Output Current | 1.5A per channel - sufficient for powering core logic, memory, and interface ICs in ADAS and infotainment systems. |
| Switching Frequency | 2.2MHz fixed ±6% spread-spectrum - allows all-ceramic external components and reduces EMI peaks. |
| Quiescent Current | 36µA in skip mode - extends battery life in always-on automotive modules. |
| Feedback Accuracy | ±3% over load/line/temp - ensures stable voltage delivery without external trimming resistors. |
| Power-Good Delay | 16ms fixed assertion timeout - provides reliable system sequencing for downstream processors. |
Pinout & Package
The MAX16963SATEC/V+ is housed in a 4mm × 4mm, 16-pin thermally enhanced TQFN-EP package with exposed pad for optimal heat dissipation in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX1, LX2 | Switching node for Channel 1 and 2 | High-impedance when disabled; requires low-inductance ceramic output capacitors and careful PCB layout to minimize ringing. |
| PGND1, PGND2 | Power ground return for each channel | Must be connected to separate low-impedance ground planes to prevent cross-channel noise coupling. |
| PV1, PV2, PV | Input supply pins for channels and bias rail | PV1/PV2 require ≥4.7µF ceramic bypass to respective PGND; PV needs 1µF + 10Ω RC filter for stability. |
| EN1, EN2 | Independent enable inputs | Logic-high (>2.4V) activates corresponding channel; pulldown resistors (50–200kΩ) ensure safe default-off state. |
| OUTS1, OUTS2 | Feedback inputs (adjustable version only) | Connect external resistor divider to set output voltage; sensitive to noise-must be routed away from LX nodes. |
| PG1, PG2 | Open-drain power-good outputs | Assert low when output drops >8%; require 10kΩ pull-up and provide 16ms timeout for system reset coordination. |
| PWM | Mode control input | High = forced PWM (fixed frequency); low = skip mode (light-load efficiency); critical for dynamic power management. |
| SYNC | Factory-programmed sync I/O | Configured as input (1.7–2.4MHz external clock) or output (90° phase-shifted 2.2MHz signal) to synchronize multiple converters. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 2.2MHz synchronous buck topology | Enables compact, high-density power solutions using small inductors (e.g., 1.5µH) and all-ceramic capacitors. |
| Spread-spectrum frequency modulation | Reduces peak radiated emissions by distributing energy across ±6% bandwidth-critical for automotive EMC compliance. |
| Independent enable and power-good signals | Allows staggered startup and fault isolation between rails-essential for multi-rail SoC power sequencing. |
| Thermal shutdown with hysteresis | Protects against sustained overload or poor heatsinking by disabling both channels at 165°C and re-enabling at 150°C. |
| 8ms fixed soft-start | Controls inrush current during power-up to prevent input rail collapse and reduce stress on input capacitors. |
Applications
| Automotive ADAS Camera Module | Industrial PLC I/O Power Rail |
|---|---|
Use Scenario: Dual-rail power supply for image sensor (1.2V) and ISP processor (3.3V) in rear-view camera systems. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering tightly regulated, low-noise power with synchronized switching to avoid interference with video timing. Use Value: 2.2MHz operation avoids AM radio band; spread-spectrum minimizes EMI impact on analog video signals; -40°C to +125°C rating ensures reliability in vehicle cabin environments. | Use Scenario: Local DC-DC conversion for isolated digital I/O modules requiring 5V and 3.3V rails from 24V industrial bus. IC Role / Device Role / Timing Role: Post-regulator converting intermediate 5V rail to precise 3.3V and 1.8V supplies with independent enable control per channel. Use Value: Independent EN1/EN2 pins allow dynamic rail shutdown during sleep mode; 1.5A per channel supports multiple I/O drivers simultaneously. |
| Automotive Infotainment Head Unit | Military Ruggedized Tablet |
Use Scenario: Powering application processor cores (0.85V) and DDR memory (1.2V) in head unit mainboard. IC Role / Device Role / Timing Role: High-efficiency dual buck converter with skip-mode operation to maintain >85% efficiency at 10mA standby load. Use Value: 36µA quiescent current extends battery backup time; automotive-grade temperature range and AEC-Q100 qualification support long-term field reliability. | Use Scenario: On-board power solution for FPGA-based processing module requiring 1.0V core and 2.5V I/O rails in harsh environmental conditions. IC Role / Device Role / Timing Role: Dual synchronous buck regulator with thermal protection and robust input UVLO (2.37V threshold) for mission-critical operation. Use Value: Overtemperature shutdown prevents latch-up in sealed enclosures; 16-pin TQFN-EP package offers superior thermal resistance (40°C/W J-A) vs. TSSOP alternative. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480QRHFRQ1 | Single-channel 8A buck; no dual-output capability; higher max current but lacks independent rail control. | Requires two devices for dual-rail designs; better suited for high-current single-rail applications like display backlight drivers. | Select when needing >1.5A per rail or higher VIN tolerance (3V–36V); not suitable for space-constrained dual-rail layouts. |
| TPS650361ARSLR | Dual 1.2A buck + LDO; lower switching frequency (1.8MHz); no spread-spectrum; different pinout and enable logic. | Includes integrated LDO for auxiliary rails; optimized for portable electronics rather than automotive thermal requirements. | Prefer when combining buck + linear regulation is acceptable and AEC-Q100 qualification is not mandatory. |
Compared with LM61480QRHFRQ1 and TPS650361ARSLR, the MAX16963SATEC/V+ uniquely delivers matched dual 1.5A outputs in a single 4mm × 4mm package with automotive-grade thermal performance, spread-spectrum EMI control, and factory-programmable SYNC-making it optimal for compact, noise-sensitive dual-rail automotive systems.
Availability
MAX16963SATEC/V+ is available at Aetrix Electronics and suitable for automotive ADAS camera modules, industrial PLC I/O power rails, and ruggedized military computing platforms requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX16963SATEC/V+ 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, designs high-performance analog and mixed-signal semiconductor solutions for automotive, industrial, and communications markets.
The MAX16963 belongs to Maxim's automotive-grade power management product line, engineered specifically for postregulation and point-of-load applications in safety-critical vehicle subsystems requiring AEC-Q100 qualification and extended temperature operation.
FAQ
What is the maximum output current capability of the MAX16963SATEC/V+ per channel?
The MAX16963SATEC/V+ delivers up to 1.5A of continuous output current per channel under specified thermal conditions. This rating assumes proper PCB layout with adequate copper area for the exposed pad and ambient temperature ≤ +70°C. At full load and elevated temperatures, derating applies per the 25mW/°C thermal specification for the TQFN-EP package. The MAX16963SATEC/V+ maintains this current capability across its full -40°C to +125°C operating range with built-in overcurrent protection limiting peak current to 2.35A typical per channel.
Does the MAX16963SATEC/V+ support adjustable output voltages?
Yes, the MAX16963SATEC/V+ is the adjustable-output variant of the MAX16963 family. It uses external resistive dividers connected to OUTS1 and OUTS2 pins to set output voltages anywhere from 0.8V to 3.6V. The feedback reference voltage is precisely trimmed to 800mV, enabling ±3% regulation accuracy over load, line, and temperature. For fixed-output versions, these pins are internally connected; the MAX16963SATEC/V+ requires no external resistors for basic operation but relies on them for voltage customization.
How does the spread-spectrum feature function in the MAX16963SATEC/V+?
The MAX16963SATEC/V+ implements spread-spectrum frequency modulation by varying its internal 2.2MHz oscillator frequency ±6% around the nominal value. This dithers the fundamental switching energy across a narrow band, reducing peak radiated emissions that could interfere with AM radio reception or other sensitive RF circuits. Spread-spectrum is enabled via factory programming and remains active regardless of PWM/SKIP mode selection. It does not affect externally synchronized operation-the modulation applies only to the internal oscillator.
What is the purpose of the SYNC pin on the MAX16963SATEC/V+?
The SYNC pin on the MAX16963SATEC/V+ is factory-programmed as either a synchronization input or output. When configured as an input, it accepts external clock signals from 1.7MHz to 2.4MHz to align switching edges across multiple converters-reducing beat frequencies and system-level EMI. As an output, it provides a 90° phase-shifted 2.2MHz signal relative to the internal oscillator, enabling interleaved operation with companion devices. This flexibility is defined at manufacture and cannot be changed in-circuit.
What protection features are integrated into the MAX16963SATEC/V+?
The MAX16963SATEC/V+ integrates overcurrent protection (OCP), overtemperature protection (OTP), and undervoltage lockout (UVLO). OCP limits peak inductor current to 2.35A typical per channel using internal current-sense amplifiers. OTP disables both regulators when junction temperature exceeds 165°C, re-enabling only after cooling by 15°C hysteresis. UVLO prevents operation below 2.37V input to avoid unstable regulation. All protections are fully autonomous and require no external components-ensuring robust operation in automotive environments where supply transients and thermal stress are common. The MAX16963SATEC/V+ also includes soft-start and power-good monitoring to safeguard downstream circuitry.
MAX16963SATEC/V+ 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:
- 2
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 3.6V
- Current - Output:
- 1.5A
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (4x4)
MAX16963SATEC/V+ FAQ
1.How can I place an order for MAX16963SATEC/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16963SATEC/V+ 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 MAX16963SATEC/V+ reliable?
The price and inventory of MAX16963SATEC/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16963SATEC/V+ is usually 5 days.
3.What payment methods are accepted for MAX16963SATEC/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16963SATEC/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16963SATEC/V+?
MAX16963SATEC/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16963SATEC/V+ 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 MAX16963SATEC/V+?
For technical support, including MAX16963SATEC/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16963SATEC/V+ requirements.
6.How does Aetrix verify that MAX16963SATEC/V+ is sourced from the original manufacturer or authorized distributors?
All MAX16963SATEC/V+ 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 MAX16963SATEC/V+ meets industry standards.
7.What is the process for return or replacement of MAX16963SATEC/V+?
All MAX16963SATEC/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16963SATEC/V+, 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 MAX16963SATEC/V+ part is unused and in its original packaging.
Return procedure for MAX16963SATEC/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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