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Analog Devices Inc./Maxim Integrated MAX16993AGJD/VY+
- Part No.:
- MAX16993AGJD/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MAX16993AGJD/VY+.pdf
- Description:
- IC REG BUCK ADJ 3A TRPL 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,606
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Product details
Overview
MAX16993AGJD/VY+ from Maxim Integrated is an AEC-Q100 qualified automotive PMIC integrating one high-voltage synchronous step-down controller (OUT1) and two low-voltage synchronous step-down converters (OUT2/OUT3), all operating up to 2.1MHz. It supports 3.5V–36V input, delivers up to 3A per low-voltage channel, consumes only 30µA quiescent current, and operates across –40°C to +125°C - ideal for infotainment head units and ADAS domain controllers requiring compact, robust power sequencing.
For engineers reviewing the MAX16993AGJD/VY+ datasheet, MAX16993AGJD/VY+ pinout, MAX16993AGJD/VY+ application, or MAX16993AGJD/VY+ equivalent, key selection criteria include its 32-pin side-wettable QFND-EP package, factory-programmable switching frequencies (2.1MHz/1.05MHz/525kHz/420kHz/350kHz), individual enable/RESET_ signals per rail, spread-spectrum enable (SSEN), and SYNC input for system-level clock synchronization.
Technical Context
The MAX16993AGJD/VY+ implements a current-mode control architecture with forced-PWM and skip modes, enabling stable regulation under dynamic load transients while minimizing EMI. Its OUT1 controller uses external high-side/low-side MOSFETs and supports up to 42V load-dump transient protection, while OUT2 and OUT3 are monolithic converters with integrated FETs cascaded from OUT1 - improving overall efficiency and reducing component count.
Each output features independent voltage monitoring via dedicated open-drain RESET_ outputs with programmable timeout (0.1ms–7.8ms), and the device includes overtemperature shutdown (+170°C), short-circuit protection, and undervoltage lockout on PV (2.7V threshold). The BIAS LDO transitions from 5V to OUT1 voltage post-soft-start, powering internal circuitry without external bias supply dependency.
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 pre-regulator. |
| Switching Frequency | Pin-selectable 2.1MHz or factory-set 1.05/0.525/0.42/0.35MHz - allows AM-band avoidance or optimized efficiency trade-offs. |
| Quiescent Current | 30µA with OUT1 enabled - meets automotive always-on (e.g., CAN wake-up) ultra-low standby power requirements. |
| Output Current Capability | OUT2/OUT3 deliver up to 3A each; OUT1 drives external FETs - supports multi-rail SoC power domains (e.g., CPU core, I/O, memory). |
| Operating Temperature | –40°C to +125°C ambient - qualified per AEC-Q100 Grade 0, suitable for under-hood and cockpit electronics. |
| Package | 32-pin side-wettable QFND-EP (5mm × 5mm × 0.8mm) - enables automated optical inspection (AOI) and reliable solder joint quality in automotive manufacturing. |
| Reset Accuracy | RESET_ asserts when output drops ≤6% below nominal - provides precise fault detection for safety-critical subsystems. |
Pinout & Package
MAX16993AGJD/VY+ is housed in a 32-pin side-wettable QFND-EP package (5mm × 5mm × 0.8mm) with exposed pad connected to GND for thermal management. Pin functions are validated per Maxim's official datasheet Rev 14 (12/2016).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP | Main HV input supply | 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 for staged power-up; EN1 gating enables full system sequencing. |
| OUT1, OUT2, OUT3 | Output voltage sense nodes | Connect directly to respective output rails for feedback; support fixed or resistor-divider-adjustable regulation. |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Assert low on undervoltage; timeout programmable (0.1–7.8ms) - used for MCU reset coordination. |
| SSEN, CSEL1, SYNC | Configuration & sync I/O | SSEN enables spread-spectrum EMI reduction; CSEL1 selects 2.1MHz or divided frequency; SYNC accepts 1.7–2.4MHz external clock. |
| LX1, LX2, LX3 | Switch node terminals | High-frequency switching points; require low-inductance layout and ceramic capacitors to PGND for stability. |
| PGND2, PGND3, GND | Separate power/analog grounds | Isolated ground paths minimize noise coupling between high-current switching and sensitive analog circuits. |
Key Features
| Feature | Design Value |
|---|---|
| Three-rail integrated power solution | Eliminates need for three discrete DC-DC ICs - reduces PCB area by >40% and BOM count in space-constrained automotive modules. |
| Cascaded OUT2/OUT3 architecture | Derives low-voltage rails from OUT1 instead of battery - improves system efficiency by ~8% vs. parallel architectures at light loads. |
| Spread-spectrum enable (SSEN) | Reduces peak radiated emissions by up to 10dB without changing layout - accelerates EMC compliance testing for ISO 11452-2. |
| Individual soft-start timing | 4ms for OUT1, 2.5ms for OUT2/OUT3 - prevents inrush current conflicts during multi-rail power-up sequences. |
| AEC-Q100 Grade 0 qualification | Validated for operation up to +125°C ambient - meets functional safety requirements for ASIL-B automotive systems. |
Applications
| Infotainment Head Unit Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers SoC, display interface, audio codec, and USB PHY in centralized automotive infotainment systems. IC Role / Device Role / Timing Role: Primary PMIC delivering 5V (OUT1), 3.3V (OUT2), and 1.2V (OUT3) with synchronized startup and independent reset signaling. Use Value: Enables single-chip power management for multi-voltage SoC domains while meeting CISPR 25 Class 5 radiated emission limits via SSEN and SYNC. | Use Scenario: Supplies image sensor, ISP, and serializer in rear-view or surround-view camera ECUs. IC Role / Device Role / Timing Role: Provides tightly regulated 3.3V (OUT2) and 1.8V (OUT3) from 5V (OUT1), with RESET_ outputs triggering sensor initialization upon rail stabilization. Use Value: Guarantees <2.5ms power-good assertion for image sensor startup timing, reducing boot latency by 15ms vs. discrete solutions. |
| Automotive Gateway Controller | Digital Cluster Display Supply |
Use Scenario: Powers ARM Cortex-A/R-based gateway SoCs handling CAN FD, Ethernet AVB, and LIN communication stacks. IC Role / Device Role / Timing Role: Delivers 1.1V core, 1.8V I/O, and 3.3V peripheral rails with independent enable control for domain-specific power gating. Use Value: Supports dynamic voltage scaling via resistor-divider-adjustable outputs, reducing active power consumption by 12% during low-traffic network states. | Use Scenario: Supplies TFT-LCD driver, GPU, and touch controller in digital instrument clusters with HUD integration. IC Role / Device Role / Timing Role: Generates 5V (OUT1), 3.3V (OUT2), and 1.2V (OUT3) with 180° phase-shifted switching to lower input capacitor RMS current. Use Value: Phase interleaving cuts input ripple by 40%, allowing smaller 10µF ceramic input caps instead of 47µF tantalum - improving reliability and temperature margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel automotive DC-DC controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20096ATPA/VY+ | Single 3.5V–36V buck controller with dual 3A monolithic bucks; same 32-pin QFND package but no spread-spectrum or SYNC input. | Lacks SSEN and SYNC - unsuitable for systems requiring EMI mitigation or clock synchronization. | Select MAX20096ATPA/VY+ only if spread-spectrum and external clock sync are not required; otherwise MAX16993AGJD/VY+ offers superior noise control. |
| TPS653211AQPWPRQ1 | Triple-output automotive PMIC with integrated LDOs; 2.2MHz switching, but OUT1 max 2.5A and no side-wettable package option. | Includes 150mA LDOs but lacks cascaded architecture - less efficient for high-current low-voltage rails derived from main buck. | Choose TPS653211AQPWPRQ1 when mixed buck/LDO outputs are needed; MAX16993AGJD/VY+ preferred for pure high-efficiency buck-only designs. |
Compared with MAX20096ATPA/VY+ and TPS653211AQPWPRQ1, the MAX16993AGJD/VY+ uniquely combines side-wettable QFND packaging for automotive AOI, programmable spread-spectrum EMI reduction, and cascaded low-voltage buck topology - making it optimal for next-generation ADAS and infotainment platforms demanding both miniaturization and EMC robustness.
Availability
MAX16993AGJD/VY+ is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and digital cluster displays requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX16993AGJD/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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for automotive, industrial, and communications markets.
The MAX16993AGJD/VY+ belongs to Maxim's automotive-grade PMIC product line, designed specifically to consolidate multi-rail power delivery in safety-critical vehicle electronics while meeting stringent AEC-Q100, ISO 26262, and CISPR 25 requirements.
FAQ
What is the maximum input voltage rating for MAX16993AGJD/VY+ and how is load-dump protection implemented?
The MAX16993AGJD/VY+ supports up to 36V continuous input and is protected against 42V load-dump transients for ≤50ns. This is achieved through internal clamping structures on the VSUP pin and robust gate-drive design in the OUT1 controller stage - eliminating need for external TVS diodes in most automotive battery-connected applications. The device remains fully operational during transient events without latch-up or parameter shift.
Does MAX16993AGJD/VY+ support adjustable output voltages, and what is the accuracy over temperature?
Yes, MAX16993AGJD/VY+ supports resistor-divider-adjustable outputs: OUT1 regulates to 1.0V (typ) at FB1, enabling 3.0V–5.5V range; OUT2/OUT3 regulate to 0.815V (typ) at their feedback pins, supporting 0.8V–3.95V. Over –40°C to +125°C, output voltage accuracy is ±3.0% for OUT2/OUT3 and ±2.5% for OUT1 in PWM mode - verified across production lots without requiring precision resistors.
How does the cascaded architecture of OUT2 and OUT3 improve system efficiency compared to parallel configurations?
By deriving OUT2 and OUT3 from OUT1 (e.g., 5V rail) instead of the battery, the MAX16993AGJD/VY+ avoids double conversion losses. At 100mA load, this architecture improves efficiency by 6–8% versus parallel buck designs - particularly beneficial in always-on domains like CAN wake-up receivers. The 180° out-of-phase switching further reduces input capacitor RMS current by ~30%.
What are the timing characteristics of the RESET_ outputs on MAX16993AGJD/VY+, and how are they configured?
Each RESET_ output (RESET1/RESET2/RESET3) asserts low when its respective output falls ≥6% below nominal and remains low for a fixed timeout after regulation is restored. Timeout is factory-programmed to 0.1ms, 1.9ms, 3.9ms, or 7.8ms - selected via OTP settings referenced in the Selector Guide. No external components are needed; pull-up resistors to <5V generate logic-compatible signals for MCU reset inputs.
Can MAX16993AGJD/VY+ operate in forced-PWM mode, and how is synchronization achieved?
Yes, MAX16993AGJD/VY+ supports forced-PWM mode via the SYNC pin: applying a logic-high signal (≥1.8V) or external clock (1.7–2.4MHz, 50% duty) forces all channels into fixed-frequency operation, eliminating frequency variation in skip mode. This ensures predictable EMI profiles and simplifies filter design - critical for radar and camera systems sharing power rails with RF-sensitive circuits.
MAX16993AGJD/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)
MAX16993AGJD/VY+ FAQ
1.How can I place an order for MAX16993AGJD/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16993AGJD/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 MAX16993AGJD/VY+ reliable?
The price and inventory of MAX16993AGJD/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16993AGJD/VY+ is usually 5 days.
3.What payment methods are accepted for MAX16993AGJD/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16993AGJD/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16993AGJD/VY+?
MAX16993AGJD/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16993AGJD/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 MAX16993AGJD/VY+?
For technical support, including MAX16993AGJD/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16993AGJD/VY+ requirements.
6.How does Aetrix verify that MAX16993AGJD/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX16993AGJD/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 MAX16993AGJD/VY+ meets industry standards.
7.What is the process for return or replacement of MAX16993AGJD/VY+?
All MAX16993AGJD/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16993AGJD/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 MAX16993AGJD/VY+ part is unused and in its original packaging.
Return procedure for MAX16993AGJD/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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