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Analog Devices Inc./Maxim Integrated MAX16993AGJI/VY+T
- Part No.:
- MAX16993AGJI/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MAX16993AGJI/VY+T.pdf
- Description:
- IC REG BUCK ADJ 3A TRPL 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,514
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Product details
Overview
MAX16993AGJI/VY+T from Maxim Integrated is a 2.1MHz automotive-grade PMIC integrating one high-voltage synchronous step-down controller (OUT1, 3.5–36V input, 30µA quiescent current) and two cascaded low-voltage synchronous step-down converters (OUT2/OUT3, 0.8–3.95V, up to 3A each), all in a single 32-pin TQFN-EP package. It delivers regulated power for ADAS camera modules, infotainment SoCs, and domain controllers requiring compact, low-noise, AEC-Q100-compliant DC-DC conversion.
For engineers reviewing the MAX16993AGJI/VY+T datasheet, MAX16993AGJI/VY+T pinout, MAX16993AGJI/VY+T application, or MAX16993AGJI/VY+T equivalent, key selection criteria include its 2.1MHz switching frequency (reducing EMI and enabling small magnetics), individual enable/reset per channel, spread-spectrum and SYNC capability for system-level noise control, and -40°C to +125°C operation with load-dump tolerance up to 42V.
Technical Context
The MAX16993AGJI/VY+T implements a current-mode architecture with forced-PWM and skip modes, supporting precise regulation across wide line/load/temperature ranges. Its OUT1 controller features programmable oscillator frequency (2.1MHz or factory-set 350/420/525/1050kHz), while OUT2/OUT3 operate fixed at 2.1MHz and are powered directly from OUT1-enabling higher overall efficiency versus independent inputs.
Each output includes dedicated enable (EN1/EN2/EN3), open-drain reset (RESET1/RESET2/RESET3), and overcurrent/overtemperature protection. The BIAS LDO (5V, 100mA max) powers internal circuitry pre-soft-start, then transitions to OUT1 post-startup; PV and PGND pins are segregated per buck stage to minimize ground bounce and improve EMI performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range (VSUP) | 3.5V to 36V continuous; withstands 42V load-dump transients - enables direct connection to automotive battery without external protection. |
| Switching Frequency (OUT1) | 2.1MHz (CSEL1 = GND); factory options: 350/420/525/1050kHz - high frequency allows <1µH inductors and avoids AM band interference. |
| Quiescent Current | 30µA with OUT1 enabled - meets automotive "always-on" low-power requirements for body electronics and telematics. |
| Output Current (OUT2/OUT3) | Up to 3.0A per channel (IMAX = 3.0A option) - supports high-current digital loads like image signal processors and microcontrollers. |
| Output Voltage Accuracy | ±2.5% for OUT1 (PWM mode); ±3.0% for OUT2/OUT3 - ensures stable rail delivery across -40°C to +125°C without precision resistors. |
| Thermal Protection | Thermal shutdown at +170°C with 15°C hysteresis - safeguards against sustained overload in enclosed automotive enclosures. |
| AEC-Q100 Grade | Qualified to Grade 0 (-40°C to +125°C junction) - certified for safety-critical front-end ADAS and gateway applications. |
Pinout & Package
MAX16993AGJI/VY+T is housed in a 32-pin TQFN-EP (5mm × 5mm × 0.75mm) with side-wettable QFND-EP variant available; exposed pad (EP) must be connected to GND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP (Pin 7) | Main HV input supply | Accepts 3.5–36V battery input; requires local 0.1µF ceramic bypass - primary path for load-dump energy handling. |
| EN1 (Pin 8) | High-voltage enable for OUT1 | Active-high, 1.6–2.0V threshold; enables full PMIC startup sequence - controls power sequencing of downstream rails. |
| FB1 (Pin 11) | OUT1 feedback input | Regulates to 1.0V (typ) in adjustable mode; connects to resistor divider or BIAS/GND for fixed outputs - sets final OUT1 voltage with ±2.5% accuracy. |
| LX1 (Pin 4) | OUT1 switch node | Connects to inductor; serves as return for DH1 high-side gate drive - critical for layout; requires low-inductance path to minimize ringing. |
| RESET1 (Pin 28) | Open-drain reset for OUT1 | Asserts low when OUT1 drops >6% below nominal; timeout programmable (0.1–7.8ms) - provides sequenced power-good signaling to host MCU. |
| SYNC (Pin 32) | Frequency synchronization I/O | Configurable as input (1.7–2.4MHz external clock) or logic-controlled PWM/skip mode selector - enables deterministic system-level EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-output architecture with cascaded topology | OUT2/OUT3 powered from OUT1 reduces total solution size and improves light-load efficiency vs. independent inputs. |
| Spread-spectrum enable (SSEN) | Reduces peak radiated emissions by spreading oscillator frequency ±3% at 4kHz rate - mitigates EMI without changing layout or components. |
| Individual soft-start timing | 4ms for OUT1, 2.5ms for OUT2/OUT3 - prevents inrush current conflicts during multi-rail power-up in SoC-based systems. |
| Factory-trimmed fixed outputs | 3.3V, 5.0V, or 3.15V options for OUT1; 3.15V/1.8V for OUT2/OUT3 - eliminates need for tight-tolerance feedback resistors in cost-sensitive designs. |
| Robust automotive protection suite | Includes undervoltage lockout (PV < 2.7V), overvoltage detection (107–113% of VOUT), and thermal warning/shutdown - meets ISO 7637-2 pulse immunity requirements. |
Applications
| ADAS Camera Module Power | Automotive Infotainment SoC Supply |
|---|---|
Use Scenario: Powers image sensor, ISP, and video encoder in rear-view or surround-view camera systems operating in engine bay or bumper locations. IC Role / Device Role / Timing Role: Primary PMIC delivering three tightly regulated rails: 5.0V for sensor interface, 3.15V for ISP core, and 1.8V for MIPI PHY. Use Value: 2.1MHz operation avoids AM-band interference; -40°C to +125°C rating ensures reliability under hood temperature extremes; 42V load-dump tolerance eliminates need for external TVS. |
Use Scenario: Supplies quad-core application processor, DDR memory, and display interface in head-unit or digital cluster systems. IC Role / Device Role / Timing Role: Central power manager generating 1.1V CPU core, 1.2V GPU, and 3.3V I/O rails with synchronized soft-start and individual reset assertion. Use Value: Cascaded OUT2/OUT3 improves efficiency at partial load; spread-spectrum and SYNC reduce conducted emissions on shared PCB power planes; AEC-Q100 Grade 0 validates for safety-critical use. |
| Automotive Gateway Controller | Telematics Control Unit (TCU) |
Use Scenario: Provides isolated power domains for CAN FD, Ethernet AVB, and cellular modem subsystems in vehicle communication gateways. IC Role / Device Role / Timing Role: Generates 3.3V CAN transceiver rail, 1.8V Ethernet PHY rail, and 5.0V modem interface rail with independent enable/disable control per domain. Use Value: Individual EN2/EN3 allow dynamic power gating of unused interfaces; RESET2/RESET3 provide fault-isolated power-good signals to MCU watchdog timers. |
Use Scenario: Powers LTE/NB-IoT modem, GNSS receiver, and secure element in always-connected vehicle tracking units. IC Role / Device Role / Timing Role: Delivers ultra-low-quiescent 3.3V modem rail (30µA IQ) and 1.2V GNSS LDO input with thermal monitoring for extended battery life in parking mode. Use Value: 30µA quiescent current extends backup battery runtime; thermal warning output (ERR) triggers graceful modem shutdown before thermal shutdown occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel automotive DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20096ATPA/VY+ | Single 3.5–36V buck controller (no integrated dual low-V converters); supports 2.2MHz sync, 20µA IQ, but requires external FETs for OUT1 and separate regulators for secondary rails. | Better suited for designs needing only one high-V rail plus flexibility to select discrete secondaries; lacks integrated OUT2/OUT3 cascade efficiency benefit. | Select when board space permits discrete secondary regulation and higher design flexibility is prioritized over integration. |
| TPS650361RSLR | 3-channel automotive PMIC (2x 3A bucks + LDO); operates up to 2.2MHz, but rated only to +105°C ambient and lacks 42V load-dump tolerance or spread-spectrum. | Targeted at non-safety-critical cabin electronics (e.g., HVAC displays); not qualified for ADAS or engine-bay placement due to temperature and transient limits. | Select for cost-sensitive interior modules where Grade 0 and 42V robustness are unnecessary. |
Compared with MAX20096ATPA/VY+ and TPS650361RSLR, the MAX16993AGJI/VY+T uniquely combines triple integrated regulation, AEC-Q100 Grade 0, 42V load-dump immunity, and spread-spectrum EMI reduction in a single 5mm × 5mm package - making it optimal for space-constrained, safety-aware automotive front-end power systems.
Availability
MAX16993AGJI/VY+T is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment SoC supplies, and gateway controller power systems requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for MAX16993AGJI/VY+T 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 semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for automotive, industrial, and communications markets.
The MAX16993 belongs to Maxim's automotive PMIC portfolio designed specifically for compact, high-efficiency, AEC-Q100-compliant power delivery in ADAS, infotainment, and domain controller applications - emphasizing low EMI, robust transient handling, and precise multi-rail sequencing.
FAQ
What is the maximum input voltage the MAX16993AGJI/VY+T can withstand during automotive load-dump events?
The MAX16993AGJI/VY+T is protected against load-dump transients up to 42V, as specified in its Absolute Maximum Ratings. This allows direct connection to the automotive battery without external TVS diodes in most 12V systems. The device maintains functionality during these events thanks to internal clamping and robust gate-drive design - critical for reliability in harsh automotive environments. Always verify system-level pulse testing per ISO 7637-2 Pulse 5a.
Does the MAX16993AGJI/VY+T support synchronization to an external clock source?
Yes, the MAX16993AGJI/VY+T supports external clock synchronization via its SYNC pin (Pin 32). When configured as an input, it accepts frequencies from 1.7MHz to 2.4MHz with 50% duty cycle, enabling deterministic phase alignment across multiple power rails. This feature reduces beat-frequency noise and simplifies EMI filter design in complex automotive ECUs. The SYNC function is factory-programmable and documented in the Selector Guide.
How does the cascaded architecture of OUT2 and OUT3 improve system efficiency?
The MAX16993AGJI/VY+T powers OUT2 and OUT3 directly from the regulated OUT1 output - eliminating the need for separate high-voltage input paths and associated losses. This cascaded topology improves light-load efficiency by ~8–12% compared to independent buck converters drawing from VSUP, especially when OUT1 operates at higher voltage (e.g., 5.0V) and OUT2/OUT3 deliver lower voltages (e.g., 3.15V, 1.8V). Efficiency gains are confirmed in typical operating curves (toc08, toc13).
What are the available fixed output voltage options for OUT1 on the MAX16993AGJI/VY+T?
The MAX16993AGJI/VY+T offers factory-trimmed fixed OUT1 voltages including 3.3V (FB1 = GND), 5.0V (FB1 = BIAS), and 3.15V (FB1 = BIAS with OTP setting). These options eliminate external feedback resistors and guarantee ±2.5% accuracy over temperature and load. The specific fixed voltage is determined at wafer sort and encoded in the part number suffix - MAX16993AGJI/VY+T corresponds to the 3.3V fixed-output variant per Maxim's Selector Guide.
Can the MAX16993AGJI/VY+T operate in forced-PWM mode across all load conditions?
Yes, the MAX16993AGJI/VY+T supports forced-PWM mode via the SYNC pin: applying a logic-high signal (≥1.8V) to SYNC forces all three buck regulators into fixed-frequency PWM operation, eliminating low-load skip-mode noise. This is essential for noise-sensitive applications like camera image sensors or audio codecs. Forced-PWM remains active regardless of load current - ensuring constant switching frequency and predictable EMI profile.
MAX16993AGJI/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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)
MAX16993AGJI/VY+T FAQ
1.How can I place an order for MAX16993AGJI/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16993AGJI/VY+T 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 MAX16993AGJI/VY+T reliable?
The price and inventory of MAX16993AGJI/VY+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16993AGJI/VY+T is usually 5 days.
3.What payment methods are accepted for MAX16993AGJI/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16993AGJI/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16993AGJI/VY+T?
MAX16993AGJI/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16993AGJI/VY+T 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 MAX16993AGJI/VY+T?
For technical support, including MAX16993AGJI/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16993AGJI/VY+T requirements.
6.How does Aetrix verify that MAX16993AGJI/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX16993AGJI/VY+T 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 MAX16993AGJI/VY+T meets industry standards.
7.What is the process for return or replacement of MAX16993AGJI/VY+T?
All MAX16993AGJI/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16993AGJI/VY+T, 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 MAX16993AGJI/VY+T part is unused and in its original packaging.
Return procedure for MAX16993AGJI/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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