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Analog Devices Inc./Maxim Integrated MAX16993ATJE/V+T
- Part No.:
- MAX16993ATJE/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
MAX16993ATJE/V+T.pdf
- Description:
- IC REG BUCK ADJ 3A TRPL 32TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,971
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Product details
Overview
MAX16993ATJE/V+T 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 at 2.1MHz. It accepts 3.5V–36V input, delivers up to 3A per low-voltage output, and consumes only 30µA quiescent current with OUT1 enabled - enabling always-on functionality in infotainment and ADAS power rails.
For engineers reviewing the MAX16993ATJE/V+T datasheet, MAX16993ATJE/V+T pinout, MAX16993ATJE/V+T application, or MAX16993ATJE/V+T equivalent, key selection criteria include its -40°C to +125°C operation, side-wettable QFND-EP package, 32-pin TQFN footprint, spread-spectrum EMI reduction, and individual RESET_/EN_ control per channel.
Technical Context
The MAX16993ATJE/V+T implements a current-mode architecture with forced-PWM and skip modes, supporting frequency synchronization via SYNC input (1.7–2.4MHz range) and spread-spectrum modulation (±6% deviation, 4kHz sawtooth) via SSEN. Its OUT1 controller operates up to 42V load-dump transients and features factory-trimmed or resistor-adjustable outputs (3.0V–5.5V).
OUT2 and OUT3 are cascaded from OUT1, sharing its 2.1MHz switching frequency and operating over 2.7V–5.5V input range with 0.8V–3.95V adjustable outputs. Each includes independent enable inputs, open-drain RESET_ outputs with programmable timeout (0.1–7.8ms), and integrated 3A FETs with <110mΩ high-side and <90mΩ low-side RDS(ON).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V–36V for OUT1; 2.7V–5.5V for OUT2/OUT3 - supports direct battery connection and cascade efficiency in multi-rail systems. |
| Switching Frequency | 2.1MHz (pin-selectable); factory options down to 350kHz - enables compact magnetics and avoids AM band interference. |
| Output Current | Up to 3A per OUT2/OUT3 channel - sufficient for SoC core/logic rails in automotive ECUs. |
| Quiescent Current | 30µA with OUT1 enabled - meets ISO 16750-2 sleep-mode requirements for always-on modules. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood and cabin-mounted automotive applications per AEC-Q100 Grade 0. |
| Protection Features | Overtemperature shutdown (+170°C), short-circuit limiting, undervoltage lockout (2.7V PV threshold), and output overvoltage detection - ensures robustness in harsh environments. |
| Package | 32-pin side-wettable QFND-EP (5mm × 5mm × 0.8mm) - supports automated optical inspection (AOI) and improves solder joint reliability. |
Pinout & Package
The MAX16993ATJE/V+T 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 Integrated datasheet Rev 14 (12/2016).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP | High-voltage input supply | Accepts 3.5V–36V battery input; withstands 42V load-dump transients - primary power entry for OUT1 controller. |
| EN1 / EN2 / EN3 | Independent enable inputs | Active-high digital controls for each buck stage - enables staged power-up sequencing and fault isolation. |
| RESET1 / RESET2 / RESET3 | Open-drain reset outputs | Assert low when respective output drops >6% below regulation; timeout programmable (0.1–7.8ms) - provides system-level power-good signaling. |
| SYNC | Frequency synchronization I/O | Configurable as input (1.7–2.4MHz external clock) or output - eliminates beat frequencies in multi-PMIC systems. |
| SSEN | Spread-spectrum enable | Logic-high enables ±6% frequency dithering at 4kHz - reduces peak EMI without changing layout or filter design. |
| FB1 / OUT2 / OUT3 | Voltage feedback sense inputs | Monitor regulated outputs; support fixed (3.3V/5.0V) or resistor-divider-adjustable (0.8V–5.5V) configurations - simplifies BOM across variants. |
| LX1 / LX2 / LX3 | Switching node terminals | Connect to inductor switches; support high-frequency operation with low parasitic inductance - critical for stable 2.1MHz switching. |
| BIAS | Internal 5V LDO output | Supplies internal circuitry pre-soft-start; transitions to OUT1 voltage post-startup - eliminates need for external bias rail. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-output architecture | One high-voltage controller (OUT1) + two cascaded low-voltage converters (OUT2/OUT3) - reduces component count and PCB area vs. discrete solutions. |
| 2.1MHz fixed-frequency operation | Enables use of small 1µH inductors and 10µF ceramic output capacitors - cuts solution size by >40% versus 500kHz designs. |
| Individual soft-start timing | 4ms for OUT1, 2.5ms for OUT2/OUT3 - prevents inrush current stacking during system power-up and ensures clean sequencing. |
| AEC-Q100 Grade 0 qualification | Validated for -40°C to +125°C ambient operation with thermal shutdown at +170°C - meets OEM requirements for engine bay and ADAS modules. |
| Side-wettable QFND-EP package | Facilitates AOI-compatible solder joint inspection and improves long-term reliability in thermal cycling environments - critical for automotive field life. |
Applications
| Infotainment Head Unit Power | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Powers SoC, DDR memory, and display interface in automotive head units requiring multiple isolated rails with tight transient response. IC Role / Device Role / Timing Role: Primary PMIC delivering 5.0V (OUT1), 3.3V (OUT2), and 1.2V (OUT3) simultaneously with independent enable/reset control. Use Value: 2.1MHz switching minimizes output capacitor count; 30µA quiescent current extends battery runtime during vehicle sleep mode. |
Use Scenario: Supplies image sensor, ISP, and SerDes in rear-view or surround-view camera modules mounted near hot zones. IC Role / Device Role / Timing Role: Cascaded topology uses OUT1 (5.0V) to feed OUT2 (3.3V) and OUT3 (1.8V), improving overall conversion efficiency by >8% vs. independent regulators. Use Value: -40°C to +125°C rating and AEC-Q100 qualification ensure reliable startup and operation in extreme ambient conditions. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
|
Use Scenario: Provides regulated power to microcontroller, CAN transceivers, and sensor interfaces in centralized body electronics. IC Role / Device Role / Timing Role: OUT1 powers MCU core (3.3V), OUT2 supplies CAN PHY (5.0V), OUT3 feeds LIN interface (3.3V) - all with individual reset monitoring. Use Value: Individual RESET_ outputs enable precise power-good sequencing for firmware boot validation and diagnostic reporting. |
Use Scenario: Delivers stable rails to LTE modem, GNSS receiver, and secure element in cellular-connected vehicle gateways. IC Role / Device Role / Timing Role: High-frequency operation (2.1MHz) avoids interference with RF bands; spread-spectrum mode (SSEN) further suppresses radiated emissions near antenna paths. Use Value: SYNC input allows synchronization with other PMICs or clock sources - eliminates heterodyne noise in multi-radio systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel DC-DC controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20090ATPA/V+ | Single 3.5V–36V buck controller (no integrated dual low-V converters); 2.2MHz, 5A output; requires external FETs for OUT2/OUT3. | Used where higher current (>3A) or discrete FET selection is needed; lacks cascaded topology and integrated low-V converters. | Select MAX20090ATPA/V+ when designing custom high-current rails or needing external MOSFET flexibility; not drop-in compatible. |
| TPS653221AQPWPRQ1 | Triple-output automotive PMIC (3.3V/1.2V/1.0V) with integrated LDOs; 2.2MHz, but no high-voltage controller - requires external 5V pre-regulator. | Targeted at MCU-centric systems with fixed low-voltage rails; lacks high-input capability and OUT1-level flexibility. | Choose TPS653221AQPWPRQ1 for cost-sensitive, fixed-rail applications without battery-direct requirements; requires additional HV stage. |
Compared with MAX20090ATPA/V+ and TPS653221AQPWPRQ1, the MAX16993ATJE/V+T uniquely integrates a battery-direct 36V controller with two cascaded 3A converters in one package - reducing bill-of-materials, board space, and design complexity for mid-power automotive subsystems.
Availability
MAX16993ATJE/V+T is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, body control units, and telematics control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX16993ATJE/V+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 MAX16993ATJE/V+T belongs to Maxim's automotive-grade PMIC product line, designed specifically to consolidate multi-rail power delivery in safety-critical and thermally demanding vehicle subsystems while meeting AEC-Q100 and ISO 16750 requirements.
FAQ
What is the maximum input voltage tolerance for MAX16993ATJE/V+T during load-dump events?
The MAX16993ATJE/V+T withstands load-dump transients up to 42V on the VSUP pin, exceeding ISO 7637-2 Pulse 5a requirements. This protection is inherent to the high-voltage controller stage (OUT1) and does not require external TVS diodes for standard 12V automotive systems. The device remains functional during these events and resumes normal regulation once voltage returns within 3.5V–36V operating range.
Can MAX16993ATJE/V+T operate with all three outputs enabled simultaneously?
Yes, MAX16993ATJE/V+T supports concurrent operation of OUT1, OUT2, and OUT3. OUT2 and OUT3 are powered from OUT1's output, so OUT1 must be enabled first. The device's thermal design (θJA = 37°C/W for QFND-EP) and integrated 3A FETs allow full-load operation across all channels at +85°C ambient, provided proper PCB copper area and airflow are implemented per Maxim's layout guidelines.
How is the output voltage set for OUT1 on MAX16993ATJE/V+T?
OUT1 voltage on MAX16993ATJE/V+T is set either by factory trimming (fixed 3.3V or 5.0V options) or externally via resistor divider on FB1. In adjustable mode, FB1 regulates to 1.0V (typ), allowing output voltages from 3.0V to 5.5V. The datasheet Selector Guide confirms MAX16993ATJE/V+T is configured for fixed 5.0V OUT1, with FB1 tied to BIAS per standard ordering option.
Does MAX16993ATJE/V+T support synchronization with external clock sources?
Yes, MAX16993ATJE/V+T supports external synchronization via the SYNC pin, which accepts clock signals from 1.7MHz to 2.4MHz. When configured as input, SYNC forces fixed-frequency PWM mode and aligns internal switching edges to the external source - reducing system-level EMI and eliminating beat frequencies in multi-PMIC architectures. The SYNC function is validated in the device's electrical characteristics table.
What is the purpose of the SSEN pin on MAX16993ATJE/V+T?
The SSEN (Spread-Spectrum Enable) pin on MAX16993ATJE/V+T activates ±6% frequency dithering at 4kHz when pulled high to BIAS. This modulates the 2.1MHz switching frequency to spread radiated energy across a wider spectrum, lowering peak EMI by up to 10dB without altering component values or layout. SSEN is inactive (standard oscillator) when tied to GND.
MAX16993ATJE/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-WFQFN 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 (3.3V, 5V)
- 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-TQFN (5x5)
MAX16993ATJE/V+T FAQ
1.How can I place an order for MAX16993ATJE/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16993ATJE/V+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 MAX16993ATJE/V+T reliable?
The price and inventory of MAX16993ATJE/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16993ATJE/V+T is usually 5 days.
3.What payment methods are accepted for MAX16993ATJE/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16993ATJE/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16993ATJE/V+T?
MAX16993ATJE/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16993ATJE/V+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 MAX16993ATJE/V+T?
For technical support, including MAX16993ATJE/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16993ATJE/V+T requirements.
6.How does Aetrix verify that MAX16993ATJE/V+T is sourced from the original manufacturer or authorized distributors?
All MAX16993ATJE/V+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 MAX16993ATJE/V+T meets industry standards.
7.What is the process for return or replacement of MAX16993ATJE/V+T?
All MAX16993ATJE/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16993ATJE/V+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 MAX16993ATJE/V+T part is unused and in its original packaging.
Return procedure for MAX16993ATJE/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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