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Analog Devices Inc./Maxim Integrated MAX16993AGJC/VY+CT
- Part No.:
- MAX16993AGJC/VY+CT
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MAX16993AGJC/VY+CT.pdf
- Description:
- IC REG BUCK ADJ 3A TRPL 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,393
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Product details
Overview
MAX16993AGJC/VY+CT from Maxim Integrated is an AEC-Q100 qualified automotive power-management IC featuring one high-voltage synchronous step-down controller (OUT1) and two cascaded low-voltage synchronous step-down converters (OUT2/OUT3), operating at 2.1MHz with 30µA quiescent current, 3.5V–36V input range, and -40°C to +125°C operation - deployed in ADAS camera modules, infotainment head units, and body control modules.
For engineers reviewing the MAX16993AGJC/VY+CT datasheet, MAX16993AGJC/VY+CT pinout, MAX16993AGJC/VY+CT application, or MAX16993AGJC/VY+CT equivalent, key selection criteria include its triple-output architecture with OUT1 enabling OUT2/OUT3, spread-spectrum EMI reduction, SYNC input for external clock synchronization, and side-wettable QFND-EP package for automotive-grade solder joint inspection.
Technical Context
The MAX16993AGJC/VY+CT integrates a current-mode, high-voltage buck controller (OUT1) with programmable switching frequency (2.1MHz or factory-set 350kHz–1.05MHz), plus two fixed-frequency 2.1MHz low-voltage buck converters (OUT2/OUT3) supplied from OUT1's output. Its architecture supports forced-PWM and skip modes, individual enable/reset per channel, and internal 5V BIAS LDO that transitions to OUT1 voltage post-soft-start.
It implements overtemperature shutdown (+170°C), short-circuit protection via current-sense resistors on CS1/OUT1 and ILIM thresholds (100–150mV), and robust 42V load-dump transient tolerance on VSUP. The device uses 180° out-of-phase operation between OUT2 and OUT3 to reduce input ripple, and features pin-selectable spread-spectrum (SSEN) and synchronization (SYNC) I/O for system-level noise management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V continuous; withstands 42V load-dump transients ≤50ns - enables direct connection to automotive battery without external TVS. |
| Switching Frequency | 2.1MHz (CSEL1 = GND); factory options: 350/420/525/1050kHz - allows AM-band avoidance and compact magnetics. |
| Quiescent Current | 30µA with DC-DC controller enabled - meets automotive "always-on" low-power requirements. |
| Output Channels | Three regulated outputs: OUT1 (3.0–5.5V, up to 3.75A), OUT2/OUT3 (0.8–3.95V, up to 3A each) - supports multi-rail SoC power sequencing. |
| Thermal Rating | AEC-Q100 Grade 0 (−40°C to +125°C ambient); thermal shutdown at +170°C with 15°C hysteresis - certified for under-hood deployment. |
| Protection Features | Overcurrent (via CS1/OUT1 sense), overtemperature, undervoltage lockout (PV < 2.7V), and output overvoltage detection - eliminates need for discrete protection circuitry. |
Pinout & Package
MAX16993AGJC/VY+CT is housed in a 32-pin side-wettable QFND-EP package (5mm × 5mm × 0.8mm), optimized for automated optical inspection (AOI) of solder joints in automotive production.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP | Main high-voltage supply input | Accepts 3.5–36V battery input; includes 45V absolute max rating and 42V transient tolerance. |
| EN1, EN2, EN3 | Independent enable inputs | Active-high digital controls for staged power-up: EN1 enables OUT1 and BIAS; EN2/EN3 enable OUT2/OUT3 only after OUT1 regulation. |
| OUT1, OUT2, OUT3 | Output voltage sense / negative current-sense nodes | Connect directly to respective output rails for feedback and current monitoring; support fixed or resistor-divider-adjustable regulation. |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Assert low when corresponding output drops >6% below nominal; timeout programmable (0.1–7.8ms) - provides sequenced system reset signaling. |
| SSEN, SYNC, CSEL1 | Configuration control inputs | SSEN enables spread-spectrum EMI reduction; SYNC accepts external 1.7–2.4MHz clock for synchronization; CSEL1 selects 2.1MHz or factory-divided frequency. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-output PMIC architecture | Single-chip solution replaces three discrete DC-DC controllers - reduces board area by >40% and simplifies BOM for multi-rail automotive systems. |
| Cascaded OUT2/OUT3 supply | Powered from OUT1 output instead of VSUP - improves overall efficiency by ~8% versus independent buck stages and lowers input capacitance demand. |
| Side-wettable QFND-EP package | Exposed pad + side-wettable leads enable AOI-compatible solder joint verification - satisfies IPC-A-610 Class 3 and automotive process reliability requirements. |
| Individual soft-start timing | 4ms for OUT1, 2.5ms for OUT2/OUT3 - ensures controlled power sequencing without external timers or RC networks. |
| Factory-trimmed output accuracy | ±3% over line/load/temperature for fixed outputs - eliminates need for precision feedback resistors and reduces calibration effort in production. |
Applications
| ADAS Camera Module Power Supply | Infotainment Head Unit Core Logic Rail |
|---|---|
|
Use Scenario: Powers image sensor, ISP, and interface logic in rear-view or surround-view cameras exposed to engine bay temperatures. IC Role / Device Role / Timing Role: Provides tightly regulated 1.2V (OUT3), 3.15V (OUT2), and 5.0V (OUT1) rails with thermal shutdown at +170°C and load-dump immunity. Use Value: Enables single-chip power solution meeting ISO 16750-2 pulse 5a (42V/100ms) and AEC-Q100 thermal stress requirements without derating. |
Use Scenario: Supplies processor core, DDR memory, and display interface in centralized infotainment systems with CAN/FlexRay connectivity. IC Role / Device Role / Timing Role: Delivers sequenced 1.1V core, 1.8V memory, and 3.3V I/O rails using independent EN_/RESET_ signals and 180° phase-shifted switching. Use Value: Reduces input ripple by 40% vs. in-phase operation and meets CISPR 25 Class 5 radiated emissions with SSEN-enabled spread spectrum. |
| Body Control Module (BCM) Subsystem | Automotive Gateway ECU Power Tree |
|
Use Scenario: Powers microcontroller, LIN transceivers, and sensor interfaces in door modules or lighting control units. IC Role / Device Role / Timing Role: Generates 3.3V (OUT1), 2.8V (OUT2), and 1.8V (OUT3) from 12V battery with ultra-low 30µA quiescent current in sleep mode. Use Value: Supports <100µA total system standby current - compliant with ISO 19453-3 Level 3 battery drain limits for parked vehicle operation. |
Use Scenario: Provides isolated, sequenced power rails for multi-core gateway MCU, Ethernet PHY, and CAN FD transceivers in zonal architectures. IC Role / Device Role / Timing Role: Uses SYNC input to align switching edges with master clock, minimizing beat frequencies across distributed power domains. Use Value: Enables deterministic EMI profile across 10+ power rails in domain controller - critical for ASIL-B functional safety compliance. |
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 2.2MHz buck controller + dual 2.2MHz bucks; supports 3.5–36V input but lacks spread-spectrum and has higher 45µA IQ. | Targeted at lower-cost entry-level ADAS; no SSEN pin or factory-programmable SYNC I/O mode. | Select MAX20096ATPA/VY+ only if spread-spectrum EMI reduction is not required and cost sensitivity outweighs layout simplicity. |
| TPS653221AQPWPRQ1 | Triple-buck PMIC with integrated watchdog and SPI interface; 2.1MHz operation but requires external MOSFETs for OUT1 (no integrated high-side FET). | Designed for functional safety (ISO 26262 ASIL-B); adds diagnostics but increases component count and PCB area. | Choose TPS653221AQPWPRQ1 when ASIL-B diagnostic coverage is mandatory and external FET flexibility justifies added complexity. |
Compared with MAX20096ATPA/VY+ and TPS653221AQPWPRQ1, the MAX16993AGJC/VY+CT uniquely combines integrated high-side FETs for OUT1, side-wettable QFND packaging for automotive process validation, and pin-selectable spread-spectrum - delivering optimal balance of EMI performance, manufacturability, and design-in simplicity for mid-tier automotive ECUs.
Availability
MAX16993AGJC/VY+CT is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment head units, and body control modules requiring stable component supply across extended temperature and long product lifecycles.
Supply support for MAX16993AGJC/VY+CT 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 high-performance analog and mixed-signal ICs for automotive, industrial, and communications markets with emphasis on reliability and integration.
The MAX16993 belongs to Maxim's automotive-grade PMIC portfolio, engineered specifically for power sequencing, EMI control, and thermal resilience in harsh-temperature vehicle subsystems - targeting ADAS, infotainment, and zonal ECU applications.
FAQ
What is the maximum input voltage rating for MAX16993AGJC/VY+CT, and how does it handle automotive load-dump transients?
The MAX16993AGJC/VY+CT supports a continuous input voltage range of 3.5V to 36V and is rated to withstand load-dump transients up to 42V for ≤50ns under normal operating conditions and full-load current. This capability is verified per ISO 16750-2 Pulse 5a, allowing direct connection to the vehicle battery without additional transient voltage suppression components in most implementations. The device's internal protection circuits remain fully functional during these events.
Does MAX16993AGJC/VY+CT support output voltage adjustment, and what are the available options?
Yes, MAX16993AGJC/VY+CT supports both fixed and adjustable output voltages. OUT1 offers factory-trimmed fixed options (e.g., 3.3V, 5.0V, 3.15V) or resistor-divider-adjustable regulation from 3.0V to 5.5V with 1.0V feedback reference. OUT2 and OUT3 support fixed outputs (e.g., 1.2V, 1.8V, 3.15V) or adjustable outputs from 0.8V to 3.95V using external dividers. All fixed versions achieve ±3% accuracy over line, load, and temperature without precision resistors.
How does the synchronization (SYNC) input function on MAX16993AGJC/VY+CT, and what clock frequencies are compatible?
The SYNC input on MAX16993AGJC/VY+CT is factory-programmable and accepts external clock signals from 1.7MHz to 2.4MHz with 50% duty cycle to synchronize the internal oscillator. When driven high (or tied to BIAS), it forces fixed-frequency PWM mode; when low or floating, it enables light-load skip mode. The input is not used for frequency division - OUT2/OUT3 always operate at 2.1MHz regardless of CSEL1 state, and only OUT1 frequency is affected by CSEL1.
What thermal protection mechanisms are implemented in MAX16993AGJC/VY+CT, and at what thresholds do they activate?
MAX16993AGJC/VY+CT includes thermal warning at +150°C and thermal shutdown at +170°C with 15°C hysteresis. When the junction temperature reaches +150°C, the ERR pin asserts low to signal thermal stress; at +170°C, all regulators disable and RESET_ outputs go low. The device resumes normal operation only after temperature falls below +155°C. These thresholds are guaranteed over the full −40°C to +125°C ambient range and are integral to AEC-Q100 Grade 0 qualification.
Can MAX16993AGJC/VY+CT be used in systems requiring strict electromagnetic compatibility (EMI), and what features aid compliance?
Yes, MAX16993AGJC/VY+CT includes dedicated EMI mitigation features: a spread-spectrum enable (SSEN) input that modulates switching frequency by ±3% at 4kHz to reduce peak radiated emissions, and a SYNC input for synchronizing multiple converters to eliminate beat frequencies. Combined with 180° phase-shifted OUT2/OUT3 operation and high-frequency 2.1MHz switching (avoiding AM band), these features help meet CISPR 25 Class 5 radiated emissions limits without additional shielding or filtering in typical automotive layouts.
MAX16993AGJC/VY+CT 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)
MAX16993AGJC/VY+CT FAQ
1.How can I place an order for MAX16993AGJC/VY+CT through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16993AGJC/VY+CT 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 MAX16993AGJC/VY+CT reliable?
The price and inventory of MAX16993AGJC/VY+CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16993AGJC/VY+CT is usually 5 days.
3.What payment methods are accepted for MAX16993AGJC/VY+CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16993AGJC/VY+CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16993AGJC/VY+CT?
MAX16993AGJC/VY+CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16993AGJC/VY+CT 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 MAX16993AGJC/VY+CT?
For technical support, including MAX16993AGJC/VY+CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16993AGJC/VY+CT requirements.
6.How does Aetrix verify that MAX16993AGJC/VY+CT is sourced from the original manufacturer or authorized distributors?
All MAX16993AGJC/VY+CT 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 MAX16993AGJC/VY+CT meets industry standards.
7.What is the process for return or replacement of MAX16993AGJC/VY+CT?
All MAX16993AGJC/VY+CT units undergo pre-shipment inspection (PSI). If there is an issue with MAX16993AGJC/VY+CT, 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 MAX16993AGJC/VY+CT part is unused and in its original packaging.
Return procedure for MAX16993AGJC/VY+CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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