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Analog Devices Inc./Maxim Integrated MAX16963SATEA/V+
- Part No.:
- MAX16963SATEA/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX16963SATEA/V+.pdf
- Description:
- IC REG BUCK ADJ 1.5A DL 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,464
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Product details
Overview
MAX16963SATEA/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 across 0.8V–3.6V adjustable output range, and features fixed 2.2MHz PWM mode with skip-mode efficiency enhancement (36µA quiescent current). Its thermally enhanced 16-pin TQFN-EP package supports -40°C to +125°C operation.
For engineers reviewing the MAX16963SATEA/V+ datasheet, MAX16963SATEA/V+ pinout, MAX16963SATEA/V+ application, or MAX16963SATEA/V+ equivalent, key selection criteria include dual-output synchronization capability, spread-spectrum EMI reduction, independent enable inputs, open-drain power-good outputs with 16ms delay, and factory-programmable SYNC I/O configuration for noise-immune system clock alignment.
Technical Context
The MAX16963SATEA/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) MOSFETs (90mΩ pMOS / 68mΩ nMOS) and supports peak current-mode control with 60ns minimum on-time for stable light-load regulation.
It implements dual independent soft-start (8ms), overtemperature shutdown at 165°C (15°C hysteresis), and cycle-by-cycle overcurrent protection with 2.35A typical current-limit threshold per channel. The SYNC pin is factory-configured as input in this variant, accepting 1.7–2.4MHz external clocks for deterministic phase alignment across multiple converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports wide automotive battery rail including cold-crank conditions down to 2.7V. |
| Output Voltage Range | 0.8V to 3.6V adjustable - set via external resistive divider on OUTS1/OUTS2 pins; 3% regulation accuracy over load/line/temp. |
| Max Output Current | 1.5A per channel - sustained delivery enabled by low RDS(ON) switches and thermally optimized TQFN-EP package. |
| Switching Frequency | 2.2MHz fixed (±10%) - enables all-ceramic design with small 1.0–2.2µH inductors and reduces EMI fundamental frequency. |
| Quiescent Current | 36µA in skip mode - extends battery life in always-on automotive modules during standby. |
| Power-Good Delay | 16ms fixed - ensures stable output before system logic release, preventing premature processor boot. |
| Operating Temp Range | -40°C to +125°C - qualified for under-hood automotive environments per AEC-Q100 requirements. |
Pinout & Package
The MAX16963SATEA/V+ is housed in a 4mm × 4mm, 16-pin TQFN-EP package with exposed thermal pad (EP) requiring connection to a large-area GND copper plane. Pin 1 is marked by a dot; EP must be soldered for thermal performance and cannot serve as sole ground connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX1, LX2 | Switching node (CH1/CH2) | High-impedance when disabled; connects to external inductor; requires low-inductance layout to minimize switching loss and EMI. |
| PGND1, PGND2 | Power ground (CH1/CH2) | Separate low-impedance return paths for each converter's high-current loop; must connect directly to local ceramic bypass caps. |
| PV1, PV2, PV | Input supply rails | PV1/PV2 power respective channels; PV supplies bias circuitry; each requires ≥4.7µF ceramic cap to its dedicated PGND. |
| EN1, EN2 | Enable inputs | Independent logic-level controls (2.4V VIH min); internal 100kΩ pulldown allows single-resistor disable; supports staggered startup sequencing. |
| OUTS1, OUTS2 | Feedback inputs | Connect to voltage divider from VOUTx to GND; 800mV reference sets output; sensitive to noise-must be routed away from LX nodes. |
| PG1, PG2 | Open-drain power-good | Assert low when output drops >8%; 16ms timeout ensures clean system reset; requires external 10kΩ pullup to appropriate rail. |
| PWM | Mode control | High = forced PWM (fixed 2.2MHz); low = skip mode (light-load efficiency optimization); no external components needed. |
| SYNC | Synchronization I/O | Factory-configured as input in SATE variant; accepts 1.7–2.4MHz external clock for deterministic multi-converter timing alignment. |
| GND | Analog ground | Reference for feedback, error amp, and logic; must tie to PGND at single point near EP to avoid ground bounce. |
| EP | Exposed thermal pad | Thermal interface only-not electrical ground; must connect to solid GND plane using ≥9 vias (0.3mm diameter) for <6°C/W θJA. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 2.2MHz synchronous buck topology | Enables compact all-ceramic designs with ≤2.2µH inductors and eliminates external diodes-reducing BOM count and board area by >30% vs discrete solutions. |
| Spread-spectrum frequency modulation | ±6% deviation around 2.2MHz center frequency minimizes radiated EMI peaks, easing CISPR 25 Class 5 compliance without added shielding or filtering. |
| Independent enable and power-good signals | Allows precise sequencing of dual-rail systems (e.g., SoC core + I/O) and fault isolation-critical for ASIL-B automotive subsystems. |
| Factory-programmable SYNC input | Eliminates need for external clock generator in multi-rail systems; synchronizes switching edges across multiple MAX16963 devices to suppress beat frequencies and reduce conducted noise. |
| Thermally enhanced TQFN-EP package | 40°C/W junction-to-ambient thermal resistance enables full 1.5A/channel operation at +105°C ambient without derating-verified per JEDEC JESD51-7 4-layer board standard. |
Applications
| Automotive ADAS Camera Module | Industrial PLC I/O Power |
|---|---|
Use Scenario: Dual-rail power for image sensor (1.2V) and ISP (1.8V) in rear-view camera with CAN bus interface and ambient temperature range -40°C to +105°C. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering tightly regulated, low-noise dual outputs synchronized to system clock via SYNC input to suppress EMI coupling into analog video path. Use Value: 3% output accuracy ensures sensor ADC reference stability; 2.2MHz switching avoids interference with 27MHz pixel clock; spread spectrum meets automotive EMI limits without ferrite beads. | Use Scenario: Fieldbus-powered I/O module requiring isolated 3.3V (logic) and 5V (sensor excitation) rails from 24V industrial supply, operating continuously at 60°C ambient. IC Role / Device Role / Timing Role: Postregulator converting intermediate 5V rail to precise 3.3V/1.8V outputs; independent EN1/EN2 enables dynamic rail shutdown during sleep mode to meet <100µA system standby target. Use Value: 36µA skip-mode quiescent current cuts standby power by 65% vs fixed-frequency alternatives; 16ms PG delay prevents false resets during brown-out recovery. |
| Automotive Infotainment Head Unit | Military Data Acquisition System |
Use Scenario: Power management for quad-core application processor (1.1V core, 1.8V memory, 3.3V peripherals) in head unit with thermal constraints and EMC requirements. IC Role / Device Role / Timing Role: Dual-channel buck converter supplying core and memory rails; SYNC input locked to SoC clock tree to eliminate subharmonic beat noise in audio DAC output. Use Value: Dual independent soft-start prevents inrush current overload on shared 5V intermediate rail; -40°C to +125°C rating ensures reliability in dashboard mounting locations. | Use Scenario: Ruggedized data logger deployed in airborne platforms with wide temperature swings (-40°C to +70°C) and strict MIL-STD-461E conducted emissions limits. IC Role / Device Role / Timing Role: High-efficiency dual converter powering FPGA (1.2V) and ADC (2.5V) from 28V aircraft bus; spread-spectrum mode suppresses narrowband EMI peaks at fundamental and harmonics. Use Value: 2.2MHz operation shifts noise spectrum above critical 10–30MHz military band; TQFN-EP package withstands 20g vibration per MIL-STD-810G; AEC-Q100 qualification adds supply chain assurance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023BRSBR | Triple-output (3A/1.5A/1.5A), 2.25MHz, but lacks spread-spectrum and SYNC input; uses external compensation. | Targeted at portable electronics; not AEC-Q100 qualified; lower max junction temperature (125°C). | Select when needing third output rail and cost sensitivity outweighs automotive qualification and EMI performance. |
| LM26420QSQX/NOPB | Dual 2.2MHz converter with 3A per channel, but no spread-spectrum, no programmable SYNC, and only 125°C max ambient rating. | Designed for industrial/commercial use; lacks automotive temp range and power-good delay configurability. | Choose for higher current demand (>1.5A) where AEC-Q100 and EMI suppression are secondary concerns. |
Compared with TPS65023BRSBR and LM26420QSQX/NOPB, the MAX16963SATEA/V+ provides superior EMI control via spread-spectrum and SYNC input, guaranteed automotive temperature operation, and tighter 3% output regulation-making it optimal for safety-critical automotive and ruggedized industrial deployments where signal integrity and thermal reliability are non-negotiable.
Availability
MAX16963SATEA/V+ is available at Aetrix Electronics and suitable for automotive ADAS, industrial PLCs, infotainment systems, and military data acquisition requiring stable component supply with AEC-Q100 qualification and long-term production support.
Supply support for MAX16963SATEA/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 precision analog, mixed-signal, and power management ICs for automotive, industrial, and communications markets, emphasizing high-reliability operation and system-level integration.
The MAX16963 product line targets automotive postregulation and point-of-load applications requiring dual-output synchronization, low EMI, and extended temperature operation-specifically engineered to replace discrete DC-DC solutions in space-constrained, noise-sensitive environments.
FAQ
What is the function of the SYNC pin on the MAX16963SATEA/V+?
The SYNC pin on the MAX16963SATEA/V+ is factory-configured as an input that accepts an external 1.7MHz to 2.4MHz clock signal. This allows precise synchronization of the internal 2.2MHz oscillator across multiple MAX16963SATEA/V+ devices, eliminating beat frequencies and reducing system-level EMI. It does not operate as an output in this variant.
Does the MAX16963SATEA/V+ support adjustable output voltages?
Yes, the MAX16963SATEA/V+ supports fully adjustable output voltages from 0.8V to 3.6V per channel using external resistive dividers connected to the OUTS1 and OUTS2 pins. The internal 800mV feedback reference ensures ±3% regulation accuracy across load, line, and temperature ranges without requiring precision resistors.
What thermal performance can be expected from the MAX16963SATEA/V+ in its TQFN-EP package?
The MAX16963SATEA/V+ in its 4mm × 4mm TQFN-EP package achieves a junction-to-ambient thermal resistance (θJA) of 40°C/W on a standard 4-layer JEDEC board. With proper PCB layout-including EP soldered to a large GND plane using ≥9 thermal vias-it sustains 1.5A per channel continuously at +105°C ambient temperature.
How does the MAX16963SATEA/V+ handle light-load efficiency?
The MAX16963SATEA/V+ improves light-load efficiency via skip mode, activated when the PWM pin is driven low. In this mode, it draws only 36µA quiescent current while maintaining regulation, significantly reducing power loss compared to forced PWM operation-ideal for automotive always-on modules and industrial standby circuits.
What protection features are integrated into the MAX16963SATEA/V+?
The MAX16963SATEA/V+ integrates overcurrent protection (2.35A typical per channel), overtemperature shutdown (165°C with 15°C hysteresis), 8ms fixed soft-start to limit inrush current, and open-drain power-good outputs with 16ms timeout. These features ensure robust operation in automotive and industrial environments subject to voltage transients and thermal stress.
MAX16963SATEA/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)
MAX16963SATEA/V+ FAQ
1.How can I place an order for MAX16963SATEA/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16963SATEA/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 MAX16963SATEA/V+ reliable?
The price and inventory of MAX16963SATEA/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16963SATEA/V+ is usually 5 days.
3.What payment methods are accepted for MAX16963SATEA/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16963SATEA/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16963SATEA/V+?
MAX16963SATEA/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16963SATEA/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 MAX16963SATEA/V+?
For technical support, including MAX16963SATEA/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16963SATEA/V+ requirements.
6.How does Aetrix verify that MAX16963SATEA/V+ is sourced from the original manufacturer or authorized distributors?
All MAX16963SATEA/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 MAX16963SATEA/V+ meets industry standards.
7.What is the process for return or replacement of MAX16963SATEA/V+?
All MAX16963SATEA/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16963SATEA/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 MAX16963SATEA/V+ part is unused and in its original packaging.
Return procedure for MAX16963SATEA/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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