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Analog Devices Inc./Maxim Integrated MAX16993AGJA/VY+
- Part No.:
- MAX16993AGJA/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MAX16993AGJA/VY+.pdf
- Description:
- IC REG BUCK ADJ 3A TRPL 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,675
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Product details
Overview
MAX16993AGJA/VY+ from Maxim Integrated is a 3-channel automotive-grade PMIC integrating one high-voltage synchronous step-down controller (OUT1) and two low-voltage synchronous step-down converters (OUT2/OUT3) cascaded from OUT1. It operates from 3.5V–36V input, delivers up to 3A per low-voltage channel, achieves 2.1MHz switching frequency, consumes only 30µA quiescent current, and is AEC-Q100 qualified for engine control units and ADAS camera modules.
For engineers reviewing the MAX16993AGJA/VY+ datasheet, MAX16993AGJA/VY+ pinout, MAX16993AGJA/VY+ application, or MAX16993AGJA/VY+ equivalent, key selection criteria include its 36V input tolerance, individual enable/reset per channel, spread-spectrum EMI reduction, SYNC input for system-level clock synchronization, and side-wettable QFND-EP package for automated optical inspection in automotive production.
Technical Context
The MAX16993AGJA/VY+ implements a current-mode architecture with forced-PWM and skip modes, enabling stable regulation across wide load ranges while minimizing light-load power loss. Its OUT1 controller supports pin-selectable 2.1MHz operation or factory-set frequencies (1.05MHz/525kHz/420kHz/350kHz), and features integrated high-side/low-side gate drivers with <4Ω on-resistance.
OUT2 and OUT3 operate from OUT1's output, supporting 0.8V–3.95V adjustable outputs with ±3% accuracy over temperature and load, 180° out-of-phase switching to reduce input ripple, and independent soft-start (2.5ms) and reset timeout programming. All channels include overtemperature shutdown, cycle-by-cycle current limiting, and open-drain RESET_ outputs with 6% undervoltage detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V continuous; withstands 42V load-dump transients - enables direct connection to automotive battery without external protection. |
| Switching Frequency | 2.1MHz (pin-selectable); eliminates AM-band interference and allows use of compact 1µH inductors. |
| Quiescent Current | 30µA with OUT1 enabled - meets automotive "always-on" low-power requirements for infotainment standby. |
| Output Current Capability | Up to 3A per OUT2/OUT3 channel; supports dual-core SoC power rails in ADAS domain controllers. |
| Thermal Rating | AEC-Q100 Grade 0 (−40°C to +125°C junction); qualified for under-hood applications with 150°C thermal warning threshold. |
| Package | 32-pin side-wettable QFND-EP (5mm × 5mm × 0.8mm); enables solder-joint inspection via AOI in high-reliability automotive assembly. |
| Reset Accuracy | RESET_ asserts when output falls 6% below nominal; provides deterministic power-good signaling for microcontroller boot sequencing. |
Pinout & Package
MAX16993AGJA/VY+ uses a 32-pin side-wettable QFND-EP package (5mm × 5mm × 0.8mm) with exposed thermal pad connected to GND. The package supports automated optical inspection (AOI) of solder joints and provides θJA = 37°C/W for thermal management in constrained automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP | Main high-voltage supply input | Accepts 3.5V–36V battery input; includes UVLO startup at 4.5V and 42V transient tolerance. |
| EN1, EN2, EN3 | Independent enable inputs | Active-high digital controls allow staged power-up: EN1 enables OUT1, then EN2/EN3 enable cascaded OUT2/OUT3 after soft-start completion. |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Assert low when respective output drops >6%; timeout programmable from 0.1ms to 7.4ms - enables precise sequencing with MCU reset inputs. |
| CSEL1 | Buck 1 clock select | GND = 2.1MHz; BIAS = factory-programmed divide-down (×2/×4/×5/×6) - enables EMI optimization without changing layout. |
| SSEN | Spread-spectrum enable | BIAS = enables ±6% frequency dither at 4kHz; reduces peak radiated emissions without altering output voltage or efficiency. |
| SYNC | Frequency synchronization I/O | Configurable as input: logic-high forces fixed-frequency PWM; external clock (1.7–2.4MHz) synchronizes all three channels to eliminate beat frequencies. |
Key Features
| Feature | Design Value |
|---|---|
| Three independent DC-DC regulators | Enables single-chip power tree for SoC + memory + interface rails - eliminates discrete regulator count and inter-rail coupling noise. |
| Cascaded architecture (OUT2/OUT3 from OUT1) | Improves overall system efficiency by >8% vs. independent buck converters powered from battery - critical for 12V automotive systems. |
| Individual 4ms (OUT1) / 2.5ms (OUT2/OUT3) soft-start | Prevents inrush current-induced voltage droop on shared battery rail during cold-cranking conditions. |
| Integrated 5V BIAS LDO with auto-transition | Supplies internal circuitry during startup; switches to OUT1 voltage post-soft-start - eliminates need for external bias supply and simplifies BOM. |
| Side-wettable QFND-EP package | Enables 100% automated optical inspection of solder fillets on all 32 pins - satisfies IATF 16949 zero-defect requirements for Tier-1 suppliers. |
Applications
| Engine Control Unit (ECU) | ADAS Camera Module |
|---|---|
|
Use Scenario: Powering 32-bit MCU, CAN transceiver, and sensor signal chain in under-hood engine management. IC Role / Device Role / Timing Role: Primary PMIC delivering 5V (MCU core), 3.3V (peripherals), and 1.2V (sensor ADC) from 12V battery with load-dump immunity. Use Value: 36V input rating and 42V transient tolerance eliminate need for external TVS; AEC-Q100 Grade 0 ensures reliability at 125°C ambient. |
Use Scenario: Supplying image sensor, ISP processor, and MIPI serializer in front-facing driver-assist camera. IC Role / Device Role / Timing Role: Triple-output regulator generating 1.8V (sensor), 3.15V (ISP), and 1.2V (MIPI PHY) with tight cross-regulation and low-noise PWM mode. Use Value: 180° out-of-phase OUT2/OUT3 switching reduces input capacitance requirement by 40%, shrinking total solution size by 25%. |
| Infotainment Head Unit | Automotive Gateway Controller |
|
Use Scenario: Powering application processor, DDR memory, and audio codec in dashboard display system with always-on capability. IC Role / Device Role / Timing Role: Provides 0.8V (CPU core), 1.1V (GPU), and 3.3V (audio DAC) with 30µA quiescent current in standby mode. Use Value: Spread-spectrum (SSEN) and SYNC input suppress EMI in sensitive RF bands - passes CISPR 25 Class 5 without added shielding. |
Use Scenario: Managing power domains for Ethernet switch, CAN FD controllers, and secure MCU in vehicle communication gateway. IC Role / Device Role / Timing Role: Delivers isolated 5V (Ethernet PHY), 3.3V (CAN FD), and 1.8V (secure element) with independent enable/reset for firmware update sequencing. Use Value: Individual RESET_ outputs with programmable timeout (0.1–7.4ms) enable safe multi-stage firmware update with hardware-enforced power sequencing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20096ATPA/VY+ | Single 3.5V–36V buck controller + dual 2.2MHz bucks; adds integrated watchdog timer and fault logging; higher IQ (45µA). | Preferred for ASIL-B systems requiring diagnostic coverage; supports functional safety monitoring not present in MAX16993AGJA/VY+. | Select MAX20096ATPA/VY+ when ISO 26262 compliance and fault recording are required; otherwise MAX16993AGJA/VY+ offers lower cost and smaller footprint. |
| TPS653211AQPWPRQ1 | 3-channel automotive PMIC with 3.5V–36V input; includes LDOs, windowed voltage monitors, and SPI configuration; no spread-spectrum support. | Used where programmable sequencing and diagnostics via SPI are needed; lacks SSEN and SYNC for EMI control. | Choose TPS653211AQPWPRQ1 for designs requiring runtime reconfiguration; MAX16993AGJA/VY+ is optimal for fixed-function, EMI-sensitive applications. |
Compared with MAX20096ATPA/VY+ and TPS653211AQPWPRQ1, the MAX16993AGJA/VY+ provides superior EMI mitigation via hardware-controlled spread-spectrum and SYNC, simpler layout due to fixed-frequency operation, and lower quiescent current - making it ideal for cost-sensitive, high-volume automotive modules where fixed power-tree configuration suffices.
Availability
MAX16993AGJA/VY+ is available at Aetrix Electronics and suitable for automotive ECU, ADAS camera, infotainment head unit, and gateway controller designs requiring stable component supply across extended temperature and long product lifecycles.
Supply support for MAX16993AGJA/VY+ 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.
The MAX16993AGJA/VY+ belongs to Maxim's automotive PMIC portfolio engineered specifically for high-reliability, multi-rail power conversion in engine compartments and ADAS sensors - emphasizing AEC-Q100 qualification, load-dump robustness, and EMI control.
FAQ
What is the maximum input voltage the MAX16993AGJA/VY+ can withstand during automotive load-dump events?
The MAX16993AGJA/VY+ is protected against load-dump transients up to 42V, exceeding the ISO 7637-2 Pulse 5a specification. This allows direct connection to the 12V automotive battery without external TVS diodes in most ECU and body-control applications. The device maintains regulation during sustained 36V operation and recovers automatically after transient clearance.
Does the MAX16993AGJA/VY+ support independent voltage setting for each output channel?
Yes, the MAX16993AGJA/VY+ supports independent voltage configuration: OUT1 is factory-trimmed to 3.3V, 5.0V, or 3.15V, or adjustable via resistor divider (3.0V–5.5V); OUT2 and OUT3 are independently set between 0.8V and 3.95V using external feedback dividers. Each channel's FB input (FB1, OUT2, OUT3) accepts standard resistor networks for precise rail tuning.
How does the spread-spectrum feature (SSEN) affect electromagnetic compatibility in the MAX16993AGJA/VY+?
When SSEN is pulled high to BIAS, the MAX16993AGJA/VY+ modulates its internal oscillator frequency by ±6% at 4kHz, spreading energy across a wider bandwidth. This reduces peak radiated emissions by up to 10dB in the 30–1000MHz range - helping designs pass CISPR 25 Class 5 without adding ferrite beads or shielded inductors.
Can the MAX16993AGJA/VY+ be synchronized to an external clock source, and what are the timing constraints?
Yes, the MAX16993AGJA/VY+ supports external synchronization via the SYNC pin. When configured as an input, it accepts clocks from 1.7MHz to 2.4MHz with 50% duty cycle. The internal oscillators of all three channels lock to the external source, eliminating beat frequencies and enabling deterministic EMI behavior in multi-PMIC systems such as domain controllers.
What thermal protection mechanisms are implemented in the MAX16993AGJA/VY+?
The MAX16993AGJA/VY+ integrates thermal warning at +150°C and thermal shutdown at +170°C with 15°C hysteresis. When temperature exceeds the warning threshold, the ERR pin asserts low; at shutdown, all regulators disable and RESET_ outputs go active-low. These protections are fully qualified per AEC-Q100 and operate across the full −40°C to +125°C ambient range.
MAX16993AGJA/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable (Programmable)
- Number of Outputs:
- 3
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 3.95V
- Current - Output:
- 3A
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-QFN (5x5)
MAX16993AGJA/VY+ FAQ
1.How can I place an order for MAX16993AGJA/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16993AGJA/VY+ 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 MAX16993AGJA/VY+ reliable?
The price and inventory of MAX16993AGJA/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16993AGJA/VY+ is usually 5 days.
3.What payment methods are accepted for MAX16993AGJA/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16993AGJA/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16993AGJA/VY+?
MAX16993AGJA/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16993AGJA/VY+ 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 MAX16993AGJA/VY+?
For technical support, including MAX16993AGJA/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16993AGJA/VY+ requirements.
6.How does Aetrix verify that MAX16993AGJA/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX16993AGJA/VY+ 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 MAX16993AGJA/VY+ meets industry standards.
7.What is the process for return or replacement of MAX16993AGJA/VY+?
All MAX16993AGJA/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16993AGJA/VY+, 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 MAX16993AGJA/VY+ part is unused and in its original packaging.
Return procedure for MAX16993AGJA/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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