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Analog Devices Inc./Maxim Integrated MAX16963SATEF/V+
- Part No.:
- MAX16963SATEF/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX16963SATEF/V+.pdf
- Description:
- IC REG BUCK ADJ 1.5A DL 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,737
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Product details
Overview
MAX16963SATEF/V+ from Maxim Integrated is a dual, synchronous step-down DC-DC converter optimized for automotive postregulation and point-of-load applications. It operates from 2.7V to 5.5V input, delivers up to 1.5A per output, supports adjustable 0.8V–3.6V outputs via external resistive dividers, features 2.2MHz fixed-frequency PWM mode with skip-mode efficiency enhancement, and includes open-drain power-good outputs with 16ms delay.
For engineers reviewing the MAX16963SATEF/V+ datasheet, MAX16963SATEF/V+ pinout, MAX16963SATEF/V+ application, or MAX16963SATEF/V+ equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade thermal performance (−40°C to +125°C), exact package mapping to 4mm × 4mm TQFN-EP, and two rigorously cross-checked alternative parts for design continuity.
Technical Context
The MAX16963SATEF/V+ integrates two independent 2.2MHz synchronous buck regulators with integrated low-RDS(ON) pMOS/nMOS switches (90mΩ/68mΩ typ), peak-current-mode control, and factory-programmed spread-spectrum modulation (±6% frequency deviation) to reduce EMI. Each channel features independent enable (EN1/EN2), feedback (OUTS1/OUTS2), and power-good (PG1/PG2) signals.
It implements dual-mode operation: forced PWM (via logic-high PWM pin) for consistent transient response and skip mode (PWM pin low) achieving 36µA quiescent current at light load. Thermal shutdown activates at 165°C with 15°C hysteresis, and overcurrent protection uses cycle-by-cycle peak limiting with 2.35A typical current-limit threshold per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports direct connection to automotive 3.3V/5V rails and battery-supplied systems with brownout margin. |
| Output Voltage Range | 0.8V to 3.6V (adjustable) - enables precise regulation for modern low-voltage SoCs, FPGAs, and memory interfaces. |
| Max Output Current | 1.5A per channel - sufficient for powering dual-core microcontrollers or sensor clusters without external boost stages. |
| Switching Frequency | 2.2MHz (±10%) - allows full-ceramic capacitor designs and compact 1.5µH–2.2µH inductors, minimizing board area. |
| Feedback Accuracy | ±3% over load/line/temp - ensures stable rail integrity across automotive temperature extremes without calibration. |
| Quiescent Current | 36µA in skip mode - extends battery runtime in always-on vehicle modules like telematics or ADAS sensors. |
| Thermal Range | −40°C to +125°C ambient - qualified for under-hood and infotainment system deployment per AEC-Q100 requirements. |
Pinout & Package
MAX16963SATEF/V+ is packaged in a thermally enhanced 4mm × 4mm, 16-pin TQFN-EP (exposed pad) with JEDEC-standard footprint and RoHS-compliant lead-free finish. The exposed pad must be soldered to a large contiguous copper ground plane for optimal thermal dissipation (θJA = 40°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX1, LX2 | Switching node (CH1/CH2) | High-impedance when disabled; connects to external inductor; requires tight layout to minimize switching loop inductance. |
| PGND1, PGND2 | Power ground (CH1/CH2) | Separate low-impedance return paths for each converter's high-current switching currents; must connect directly to local ceramic bypass caps. |
| PV1, PV2, PV | Input supply pins (CH1/CH2/device core) | PV1/PV2 feed respective converters; PV supplies internal bias - all require dedicated 4.7µF/1µF ceramic decoupling to respective PGND/GND planes. |
| EN1, EN2 | Enable inputs (CH1/CH2) | Independent logic-level control (2.4V VIH min); internal 100kΩ pulldown enables default-off behavior for safety-critical sequencing. |
| OUTS1, OUTS2 | Feedback inputs (CH1/CH2) | Connect to voltage divider from VOUTx to set output; 800mV reference enables precise 0.8V–3.6V adjustment with ±3% accuracy. |
| PG1, PG2 | Open-drain power-good outputs | Assert low when output drops >8%; 16ms timeout ensures reliable system reset timing after rail stabilization. |
| PWM | Mode control input | Logic-high forces fixed 2.2MHz PWM; logic-low enables skip mode - critical for optimizing efficiency across dynamic load profiles. |
| SYNC | Programmable sync I/O | Configured as output in MAX16963SATEF/V+; delivers 90° phase-shifted 2.2MHz clock to synchronize adjacent converters and reduce beat frequencies. |
| GND | Analog ground reference | Low-noise reference for error amplifiers and comparators; must be star-connected near EXPOSED PAD to avoid noise coupling into feedback paths. |
| EP | Exposed thermal pad | Primary heat path to PCB; must be soldered to solid GND plane with ≥9 thermal vias - not a functional signal pin. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 2.2MHz synchronous buck topology | Enables compact, all-ceramic power solutions with <1.5µH inductors and eliminates external diodes for >90% peak efficiency. |
| Spread-spectrum modulation (±6%) | Reduces peak radiated EMI by spreading energy across 2.08–2.32MHz band - simplifies automotive EMC compliance without added shielding. |
| Independent enable and power-good per channel | Supports staggered power-up of multi-rail systems (e.g., core + I/O) and fault-isolation in safety-critical domains like ADAS domain controllers. |
| 8ms fixed soft-start | Prevents inrush current damage to input capacitors and upstream power sources during cold start in vehicle battery systems. |
| Overtemperature and cycle-by-cycle overcurrent protection | Shuts down at 165°C junction temp with 15°C hysteresis; limits peak inductor current to 2.35A to protect MOSFETs during short-circuit events. |
Applications
| Automotive Infotainment Power | ADAS Sensor Cluster Supply |
|---|---|
|
Use Scenario: Powers dual-rail SoC (1.2V core, 3.3V I/O) and display interface in head-unit systems with 12V battery input. IC Role / Device Role / Timing Role: Dual-channel postregulator delivering stable, low-noise 1.2V/3.3V rails with synchronized switching to suppress beat frequencies. Use Value: 2.2MHz operation enables small 1.5µH inductors and 22µF ceramic output caps, reducing total solution size by 40% vs. 500kHz alternatives. |
Use Scenario: Supplies image sensor array (1.8V analog, 2.8V digital) and radar processor (1.1V core) in front-camera modules. IC Role / Device Role / Timing Role: Independent buck regulator per rail with separate EN/PG signals enabling precise power sequencing and fault reporting. Use Value: ±3% output accuracy over −40°C to +125°C ensures sensor ADC reference stability and prevents thermal drift-induced false positives. |
| Industrial Telematics Gateway | Commercial Vehicle Telematics |
|
Use Scenario: Provides 3.3V MCU rail and 1.8V cellular modem rail in GPS tracking units operating on 24V truck batteries with wide input transients. IC Role / Device Role / Timing Role: Input-filter tolerant buck converter with 5.5V max input rating and robust UVLO (2.37V) for brownout resilience. Use Value: Skip mode reduces quiescent current to 36µA, extending backup battery life to >72 hours during vehicle ignition-off states. |
Use Scenario: Powers CAN transceiver (5V), microcontroller (3.3V), and GNSS receiver (1.8V) in fleet management ECUs exposed to engine compartment heat. IC Role / Device Role / Timing Role: Automotive-qualified dual buck with 125°C ambient rating and thermal shutdown at 165°C junction temperature. Use Value: Exposed-pad TQFN package achieves 40°C/W θJA, allowing full 1.5A/channel operation at +105°C ambient without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4420AGL-A-P | Single-channel 2A buck; no spread spectrum; 2.2MHz fixed frequency; QFN-16 package. | Lacks dual-output capability and automotive temperature range (−40°C to +125°C); rated only to +105°C. | Select when only one regulated rail is needed and cost sensitivity outweighs dual-channel integration and AEC-Q100 qualification. |
| TPS650330ARSLR | Dual 1.2A buck + LDO; 2.2MHz; no spread spectrum; WQFN-24 package; integrated power sequencing. | Includes auxiliary LDO but lacks SYNC output and programmable PG delay; larger footprint and higher BOM count. | Choose when system requires mixed DC-DC + linear regulation and deterministic power-up sequencing across three rails. |
Compared with MPQ4420AGL-A-P and TPS650330ARSLR, the MAX16963SATEF/V+ uniquely combines dual 1.5A channels, automotive-grade thermal performance, spread-spectrum EMI reduction, and a dedicated SYNC output for multi-converter synchronization - making it optimal for space-constrained, EMC-sensitive automotive subsystems requiring two precisely tracked rails.
Availability
MAX16963SATEF/V+ is available at Aetrix Electronics and suitable for automotive infotainment, ADAS sensor clusters, and industrial telematics requiring stable component supply with guaranteed long-term availability and AEC-Q100-compliant traceability.
Supply support for MAX16963SATEF/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 ICs for automotive, industrial, and communications markets with emphasis on power efficiency and reliability.
The MAX16963 product line targets automotive power management, delivering dual high-frequency buck converters with integrated protections, spread-spectrum EMI control, and AEC-Q100 qualification for demanding under-hood and cabin applications.
FAQ
What is the function of the SYNC pin on the MAX16963SATEF/V+?
The SYNC pin on the MAX16963SATEF/V+ is factory-configured as an output that delivers a 90° phase-shifted 2.2MHz clock signal synchronized to the internal oscillator. This enables precise timing alignment with other MAX16963SATEF/V+ devices or compatible converters to reduce beat-frequency EMI in multi-rail systems without requiring external clock generators.
Does the MAX16963SATEF/V+ support adjustable output voltages?
Yes, the MAX16963SATEF/V+ supports fully adjustable output voltages from 0.8V to 3.6V per channel using external resistive dividers connected to OUTS1 and OUTS2. The internal 800mV feedback reference ensures ±3% regulation accuracy across load, line, and temperature, eliminating need for precision resistors in most automotive designs.
What protection features are integrated into the MAX16963SATEF/V+?
The MAX16963SATEF/V+ integrates overtemperature shutdown (165°C trip, 15°C hysteresis), cycle-by-cycle overcurrent limiting (2.35A typical per channel), open-drain power-good monitoring with 16ms timeout, and 8ms fixed soft-start. These features collectively prevent damage during startup surges, short circuits, and thermal overload in automotive environments.
How does the MAX16963SATEF/V+ achieve low EMI in automotive applications?
The MAX16963SATEF/V+ achieves low EMI through 2.2MHz fixed-frequency operation (reducing fundamental harmonics), integrated spread-spectrum modulation (±6% frequency deviation), and a SYNC output enabling phase-aligned multi-converter operation. These features suppress peak radiated emissions without requiring external filters or shielding in ISO 11452-2/ISO 11452-4 compliant systems.
What package type is used for the MAX16963SATEF/V+?
The MAX16963SATEF/V+ uses a 4mm × 4mm, 16-pin TQFN-EP (exposed pad) package with RoHS-compliant lead-free finish. The exposed pad must be soldered to a large contiguous GND plane using ≥9 thermal vias to achieve its specified 40°C/W junction-to-ambient thermal resistance for full 1.5A/channel operation at +125°C ambient.
MAX16963SATEF/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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (4x4)
MAX16963SATEF/V+ FAQ
1.How can I place an order for MAX16963SATEF/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16963SATEF/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 MAX16963SATEF/V+ reliable?
The price and inventory of MAX16963SATEF/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16963SATEF/V+ is usually 5 days.
3.What payment methods are accepted for MAX16963SATEF/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16963SATEF/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16963SATEF/V+?
MAX16963SATEF/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16963SATEF/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 MAX16963SATEF/V+?
For technical support, including MAX16963SATEF/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16963SATEF/V+ requirements.
6.How does Aetrix verify that MAX16963SATEF/V+ is sourced from the original manufacturer or authorized distributors?
All MAX16963SATEF/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 MAX16963SATEF/V+ meets industry standards.
7.What is the process for return or replacement of MAX16963SATEF/V+?
All MAX16963SATEF/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16963SATEF/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 MAX16963SATEF/V+ part is unused and in its original packaging.
Return procedure for MAX16963SATEF/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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