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Analog Devices Inc./Maxim Integrated MAX16993AGJI/VY+
- Part No.:
- MAX16993AGJI/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MAX16993AGJI/VY+.pdf
- Description:
- IC REG BUCK ADJ 3A TRPL 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,875
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Product details
Overview
MAX16993AGJI/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 MAX16993AGJI/VY+ datasheet, MAX16993AGJI/VY+ pinout, MAX16993AGJI/VY+ application, or MAX16993AGJI/VY+ equivalent, key selection criteria include its 36V input tolerance with 42V load-dump protection, individual enable/reset per channel, spread-spectrum EMI reduction, SYNC input for system clock synchronization, and side-wettable QFND-EP package for automated optical inspection in automotive production.
Technical Context
The MAX16993AGJI/VY+ implements a current-mode architecture supporting forced-PWM and skip modes across all three channels. Its OUT1 controller features programmable switching frequencies (2.1MHz or factory-set 350kHz–1.05MHz), while OUT2/OUT3 operate fixed at 2.1MHz and are powered directly from OUT1's output-enabling higher overall efficiency versus independent input sourcing.
Each channel includes dedicated overcurrent limiting (via CS1/OUT1 for OUT1; internal sensing for OUT2/OUT3), thermal shutdown at +170°C, and open-drain RESET_ outputs with programmable timeout (0.1ms–7.8ms). The BIAS LDO transitions from 5V to OUT1 voltage post-soft-start, reducing power loss during steady-state operation.
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 TVS. |
| 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 mode. |
| Output Current Capability | OUT2/OUT3: up to 3A each; supports dual-core microcontrollers or image sensors requiring stable 1.2V/3.3V rails. |
| Thermal Rating | -40°C to +125°C ambient operating range; junction limit +150°C - qualified for under-hood automotive placement. |
| Protection Features | Overtemperature shutdown (+170°C), short-circuit limiting, undervoltage lockout (2.7V PV threshold), and output overvoltage detection - reduces need for external fault management circuitry. |
| Package | 32-pin side-wettable QFND-EP (5mm × 5mm × 0.8mm); enables AOI-compatible solder joint inspection for automotive reliability assurance. |
Pinout & Package
MAX16993AGJI/VY+ is housed in a 32-pin side-wettable QFND-EP package (5mm × 5mm × 0.8mm) with exposed pad connected to GND for thermal dissipation. Thermal resistance θJA = 37°C/W (JEDEC JESD51-7, 4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP | Main high-voltage supply input | Accepts 3.5V–36V battery input; includes 4.5V startup threshold and 42V transient protection. |
| EN1, EN2, EN3 | Independent enable inputs | Active-high digital controls allow sequenced power-up of OUT1 → OUT2/OUT3 with no external logic required. |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Assert low when respective output drops >6% below regulation; timeout programmable from 0.1ms to 7.8ms for MCU reset coordination. |
| CSEL1 | Buck 1 clock select | GND = 2.1MHz; BIAS = factory-divided frequency (350/420/525/1050 kHz) - enables EMI optimization without changing layout. |
| SSEN | Spread-spectrum enable | BIAS = ±6% frequency dither at 4kHz; reduces peak radiated emissions without altering component selection. |
| SYNC | Frequency synchronization I/O | Configurable as input: accepts 1.7–2.4MHz external clock for deterministic noise alignment across multiple rails. |
Key Features
| Feature | Design Value |
|---|---|
| Three integrated DC-DC channels | Reduces bill-of-materials count by eliminating discrete controllers and external FETs for multi-rail automotive systems. |
| Cascaded OUT2/OUT3 architecture | Improves system efficiency by powering low-voltage rails from regulated OUT1 instead of raw battery - avoids double conversion losses. |
| Side-wettable QFND-EP package | Enables automated optical inspection of solder joints on production line - critical for zero-defect automotive manufacturing compliance. |
| Individual soft-start timing | 4ms for OUT1, 2.5ms for OUT2/OUT3 - prevents inrush current conflicts during controlled power sequencing in ECUs. |
| AEC-Q100 Grade-0 qualification | Validated for operation at +125°C ambient - supports placement in high-temperature zones such as near engine compartments or radar housings. |
Applications
| ADAS Camera Module Power Supply | Automotive Infotainment SoC Rail |
|---|---|
Use Scenario: Powers image sensor, ISP, and interface PHY in rear-view or surround-view camera modules mounted in exterior housings. IC Role / Device Role / Timing Role: Provides tightly regulated 1.2V (OUT3), 3.3V (OUT2), and 5.0V (OUT1) rails with independent reset signaling and thermal monitoring. Use Value: 30µA quiescent current extends battery life in parking-mode vision systems; 42V load-dump tolerance ensures robustness against alternator transients. | Use Scenario: Supplies core, I/O, and memory rails for quad-core automotive infotainment processors requiring precise voltage sequencing. IC Role / Device Role / Timing Role: Delivers 3A @ 1.0V (OUT3), 3A @ 1.8V (OUT2), and 5V @ 2A (OUT1) with synchronized soft-start and individual enable control. Use Value: 2.1MHz operation avoids AM radio band interference; spread-spectrum mode reduces EMI during display refresh cycles. |
| Engine Control Unit (ECU) Auxiliary Rails | Automotive Telematics Gateway |
Use Scenario: Generates isolated 3.3V and 5V auxiliary supplies for CAN transceivers, sensor interfaces, and watchdog circuits in under-hood ECUs. IC Role / Device Role / Timing Role: Acts as primary PMIC with OUT1 supplying main 5V rail, OUT2 powering CAN FD PHY, and OUT3 feeding microcontroller I/O domain. Use Value: -40°C to +125°C operation and AEC-Q100 qualification ensure reliability in extreme thermal environments; individual RESET_ outputs simplify fault isolation. | Use Scenario: Powers LTE/V2X modem, GNSS receiver, and secure MCU in telematics control units requiring low-noise, high-efficiency multi-rail generation. IC Role / Device Role / Timing Role: Provides 1.1V core, 1.8V memory, and 3.3V interface rails with SYNC input locked to system master clock to minimize jitter coupling. Use Value: Forced-PWM mode via SYNC eliminates audible noise from ceramic capacitors; 32-pin QFND package supports high-density PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20096ATGB/V+ | Single 3.5V–36V buck controller + dual 2.1MHz bucks; same pinout but lacks SSEN and CSEL1; 2.5µA shutdown current vs. 30µA active quiescent. | Better suited for ultra-low-power always-on gateways where OUT1-only operation dominates duty cycle. | Select MAX20096ATGB/V+ when spread-spectrum EMI reduction is unnecessary and minimum shutdown current is prioritized over flexible frequency selection. |
| TPS653211AQPWPRQ1 | Three-channel automotive PMIC with integrated LDOs; 2.2MHz switching; no spread-spectrum; different pin assignment; requires external compensation for all channels. | Preferred for designs needing mixed DC-DC + linear regulation (e.g., analog sensor bias) without adding discrete LDOs. | Choose TPS653211AQPWPRQ1 when combining switching regulators with low-noise LDOs simplifies system-level noise budgeting for radar or audio subsystems. |
Compared with MAX20096ATGB/V+ and TPS653211AQPWPRQ1, the MAX16993AGJI/VY+ uniquely combines pin-selectable 2.1MHz operation, spread-spectrum EMI control, and side-wettable packaging - making it optimal for cost-sensitive, high-volume ADAS camera modules requiring AOI validation and AM-band immunity.
Availability
MAX16993AGJI/VY+ is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment head units, and telematics gateways requiring stable component supply, AEC-Q100 compliance, and production-ready side-wettable packaging.
Supply support for MAX16993AGJI/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 MAX16993 belongs to Maxim's automotive PMIC portfolio targeting compact, high-efficiency power solutions for camera modules, radar sensors, and domain controllers - emphasizing AEC-Q100 qualification, EMI robustness, and production-ready packaging.
FAQ
What is the maximum input voltage rating for MAX16993AGJI/VY+ and how does it handle automotive transients?
The MAX16993AGJI/VY+ supports a continuous input voltage range of 3.5V to 36V and is protected against load-dump transients up to 42V. This capability is implemented through internal clamping and robust gate-drive design, allowing direct connection to the vehicle battery without external TVS diodes in most Class D (ISO 7637-2) test conditions. The device remains functional during ISO 16750-2 pulse 5a/b events when properly decoupled.
Does MAX16993AGJI/VY+ support output voltage adjustment, and what are the factory-trimmed options?
Yes, MAX16993AGJI/VY+ supports both fixed and adjustable output voltages. OUT1 offers factory-trimmed fixed outputs of 3.3V (FB1 = GND) or 5.0V/3.15V (FB1 = BIAS), while OUT2/OUT3 provide fixed options including 1.2V, 1.8V, and 3.15V. All channels support resistor-divider adjustment: OUT1 from 3.0V–5.5V (FB1 regulates to 1.0V), OUT2/OUT3 from 0.8V–3.95V using external feedback dividers.
How does the cascaded architecture of OUT2 and OUT3 improve system efficiency in MAX16993AGJI/VY+?
The MAX16993AGJI/VY+ powers OUT2 and OUT3 directly from the regulated output of OUT1 rather than from the raw battery input. This eliminates double-conversion losses that would occur if each channel drew from VSUP independently. Measured data shows up to 8% higher full-load efficiency compared to discrete buck solutions, particularly beneficial in thermally constrained ADAS modules where heat dissipation must be minimized.
What is the function of the SSEN pin on MAX16993AGJI/VY+, and when should it be enabled?
The SSEN (Spread-Spectrum Enable) pin on MAX16993AGJI/VY+ activates ±6% frequency dithering at 4kHz when pulled high to BIAS. This spreads radiated energy across a wider bandwidth, reducing peak EMI by up to 10dB in the 30–1000MHz range. It should be enabled during EMC pre-compliance testing or in final designs where conducted/radiated emissions exceed CISPR 25 Class 5 limits - especially near sensitive RF receivers like GNSS or V2X antennas.
Can MAX16993AGJI/VY+ be synchronized to an external clock, and what are the timing constraints?
Yes, MAX16993AGJI/VY+ supports external clock synchronization via the SYNC pin, configurable as input accepting 1.7MHz–2.4MHz signals with 45–55% duty cycle. When enabled, the internal oscillator locks to the external source within one cycle, enabling deterministic noise alignment across multiple power rails. This is essential for reducing beat frequencies in multi-PMIC systems such as centralized vehicle computers or zonal architectures.
MAX16993AGJI/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tube
- 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+ FAQ
1.How can I place an order for MAX16993AGJI/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16993AGJI/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 MAX16993AGJI/VY+ reliable?
The price and inventory of MAX16993AGJI/VY+ 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+ is usually 5 days.
3.What payment methods are accepted for MAX16993AGJI/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16993AGJI/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16993AGJI/VY+?
MAX16993AGJI/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16993AGJI/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 MAX16993AGJI/VY+?
For technical support, including MAX16993AGJI/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16993AGJI/VY+ requirements.
6.How does Aetrix verify that MAX16993AGJI/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX16993AGJI/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 MAX16993AGJI/VY+ meets industry standards.
7.What is the process for return or replacement of MAX16993AGJI/VY+?
All MAX16993AGJI/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16993AGJI/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 MAX16993AGJI/VY+ part is unused and in its original packaging.
Return procedure for MAX16993AGJI/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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