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Analog Devices Inc./Maxim Integrated MAX16993AGJB/VY+T
- Part No.:
- MAX16993AGJB/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MAX16993AGJB/VY+T.pdf
- Description:
- IC REG BUCK ADJ 3A TRPL 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,220
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Product details
Overview
MAX16993AGJB/VY+T from Maxim Integrated is a 3-channel automotive-grade PMIC integrating 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, 3.5–36V input range, and AEC-Q100 qualification for under-hood infotainment power rails.
For engineers reviewing the MAX16993AGJB/VY+T datasheet, MAX16993AGJB/VY+T pinout, MAX16993AGJB/VY+T application, or MAX16993AGJB/VY+T equivalent, key selection considerations include its 32-pin side-wettable QFND-EP package, individual enable/reset per channel, spread-spectrum and SYNC capability, and factory-programmable frequency options down to 350kHz.
Technical Context
The MAX16993AGJB/VY+T implements a current-mode control architecture with forced-PWM and skip modes, enabling stable regulation across wide load ranges while minimizing EMI via optional spread-spectrum modulation and external clock synchronization. Its OUT1 controller supports up to 42V load-dump transients and features programmable soft-start (4ms) and overvoltage/overcurrent protection.
OUT2 and OUT3 operate from OUT1's output, sharing 2.1MHz switching with 180° phase offset to reduce input ripple; each integrates 3A-rated FETs with on-resistance of 50–90mΩ (low-side) and 70–110mΩ (high-side), supporting 0.8–3.95V adjustable outputs with ±3% accuracy over temperature and load.
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 | 2.1MHz (pin-selectable); factory options include 1.05MHz, 525kHz, 420kHz, 350kHz - allows AM-band avoidance and compact magnetics. |
| Quiescent Current | 30µA with OUT1 enabled - meets automotive "always-on" low-power requirements for telematics and ADAS modules. |
| Output Channels | Three independent regulated outputs: OUT1 (3.0–5.5V, HV controller), OUT2/OUT3 (0.8–3.95V, 1.5A/3.0A LV converters) - supports multi-rail SoC power sequencing. |
| Thermal Rating | AEC-Q100 qualified; -40°C to +125°C ambient operation with thermal shutdown at +170°C - validated for engine compartment deployment. |
| Package | 32-pin side-wettable QFND-EP (5mm × 5mm × 0.8mm); exposed pad for enhanced thermal dissipation - supports automated optical solder inspection (AOI). |
| Protection Features | Individual overcurrent limiting, overtemperature shutdown, undervoltage lockout (2.7V PV threshold), and output overvoltage detection - ensures robust fault recovery in harsh environments. |
Pinout & Package
MAX16993AGJB/VY+T uses a 32-pin side-wettable QFND-EP package (5mm × 5mm × 0.8mm) with exposed thermal pad connected to GND. Pin functions are fully defined per Maxim's official pin description table and support automotive PCB layout compliance including separate PGND2/PGND3 planes and dedicated analog/digital ground paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP | Main HV supply input | Accepts 3.5–36V battery input; requires ≥0.1µF local ceramic bypass - primary path for load-dump energy handling. |
| EN1, EN2, EN3 | Independent enable inputs | Active-high digital controls for each buck stage; EN1 gating enables full system power sequencing - supports ASIL-B functional safety boot order. |
| RESET1/2/3 | Open-drain reset outputs | Assert low when respective output drops >6% below nominal; timeout programmable (0.1–7.4ms) - provides deterministic power-good signaling for microcontroller startup. |
| CSEL1, SSEN, SYNC | Configuration & timing I/O | CSEL1 selects 2.1MHz or factory-divided frequency; SSEN enables spread-spectrum; SYNC accepts 1.7–2.4MHz external clock - enables EMI optimization and system-level noise coordination. |
| LX1/LX2/LX3 | Switching node terminals | High dv/dt nodes driving external inductors; require tight loop layout and Kelvin grounding - critical for efficiency and EMI performance in 2.1MHz operation. |
| OUT1/OUT2/OUT3 | Output voltage sense inputs | Feedback connections for regulation; support fixed (e.g., 3.3V/5.0V) or resistor-divider-adjustable outputs (0.8–5.5V) - eliminates need for external error amplifiers. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-output architecture with cascaded topology | OUT2/OUT3 powered from OUT1 reduces total solution size and improves overall efficiency vs. independent buck designs - ideal for space-constrained automotive ECUs. |
| Spread-spectrum enable (SSEN) | Reduces peak radiated emissions by spreading oscillator frequency ±3% at 4kHz rate - achieves faster EMI compliance without filter redesign. |
| Individual soft-start timers | 4ms for OUT1, 2.5ms for OUT2/OUT3 - prevents inrush current overload during cold-cranking and supports staggered SoC core/logic rail ramp-up. |
| Factory-trimmed output accuracy | ±3% over line/load/temperature without precision resistors - lowers BOM cost and design validation effort for production automotive systems. |
| Side-wettable QFND-EP package | Enables automated optical inspection of solder joints - improves manufacturing yield and field reliability in high-vibration automotive applications. |
Applications
| Infotainment Head Unit Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers SoC, DDR memory, display interface, and audio codec in automotive head units requiring multiple isolated rails with strict EMI limits. IC Role / Device Role / Timing Role: Primary PMIC delivering 5.0V (core), 3.3V (I/O), and 1.2V (memory) from 12V battery with synchronized 2.1MHz switching. Use Value: Cascaded architecture reduces component count by 30% vs. discrete buck solutions; spread-spectrum mode meets CISPR-25 Class 5 radiated emissions limits. |
Use Scenario: Supplies image sensor, ISP, and serializer in rear-view or surround-view camera modules mounted near engine bay. IC Role / Device Role / Timing Role: High-voltage controller (OUT1) handles cold-crank dips and load-dump spikes; low-voltage converters (OUT2/OUT3) power sensor analog front-end and digital logic. Use Value: AEC-Q100 qualification and -40°C to +125°C operation ensure reliability under hood; individual RESET outputs enable fail-safe sensor initialization. |
| Telematics Control Unit (TCU) | Body Control Module (BCM) Subsystem |
Use Scenario: Provides always-on 3.3V rail for cellular modem and 1.8V for GNSS receiver in LTE/V2X telematics gateways. IC Role / Device Role / Timing Role: Low-quiescent-current PMIC maintaining <30µA sleep current while supporting fast wake-up via EN1/EN2/EN3 control. Use Value: Meets ISO 16750-2 battery drain requirements for parked vehicle scenarios; SYNC input allows alignment with baseband processor clock to suppress beat frequencies. |
Use Scenario: Powers microcontroller, CAN transceiver, and LED drivers in centralized body electronics controlling lighting, door locks, and HVAC. IC Role / Device Role / Timing Role: Triple-output regulator supplying MCU core (1.2V), I/O (3.3V), and CAN PHY (5.0V) with independent enable/reset for modular firmware updates. Use Value: Individual EN_/RESET_ pins simplify ASIL-A/B diagnostic coverage; overtemperature shutdown prevents thermal runaway in sealed BCM enclosures. |
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 |
|---|---|---|---|
| MAX20090ATPA/VY+ | Single 3.5–36V buck controller (no integrated dual LV converters); 2.2MHz fixed frequency; lower IQ (22µA) | Suitable only for single-rail applications; requires external second-stage converters for multi-voltage systems | Select when only one regulated output is needed and board space permits discrete secondary conversion. |
| TPS65321A-Q1 | Triple-output PMIC with LDOs instead of buck converters for OUT2/OUT3; 2.2MHz switching only on main buck; no spread-spectrum | Better for low-noise analog rails but less efficient at >500mA loads; lacks SSEN and SYNC flexibility | Prefer for mixed-signal clusters where noise-sensitive ADCs or RF sections coexist with digital logic. |
Compared with MAX20090ATPA/VY+ and TPS65321A-Q1, the MAX16993AGJB/VY+T uniquely integrates three synchronized buck stages in one package with configurable EMI reduction features, making it optimal for compact, high-efficiency automotive subsystems requiring ≥2 independent switched rails.
Availability
MAX16993AGJB/VY+T is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, telematics control units, and body control modules requiring stable component supply across extended temperature and long product lifecycles.
Supply support for MAX16993AGJB/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 MAX16993AGJB/VY+T belongs to Maxim's automotive PMIC portfolio, designed specifically to replace discrete power solutions in next-generation ECU platforms with stringent AEC-Q100, EMI, and thermal requirements.
FAQ
What is the maximum input voltage rating for MAX16993AGJB/VY+T, and how does it handle automotive transients?
The MAX16993AGJB/VY+T supports a continuous input voltage range of 3.5V to 36V and is protected against load-dump transients up to 42V. This rating is achieved through internal clamp circuitry and robust gate-drive design on the high-voltage controller stage (OUT1), allowing direct connection to the vehicle battery without external transient suppression components in most standard 12V automotive architectures. The device maintains regulation during cold-crank events down to 3.5V.
Does MAX16993AGJB/VY+T support output voltage adjustment, and what are the supported ranges?
Yes, MAX16993AGJB/VY+T supports both fixed and adjustable output voltages. OUT1 offers factory-trimmed fixed options (e.g., 3.3V, 5.0V) or resistor-divider-adjustable outputs from 3.0V to 5.5V. OUT2 and OUT3 support fixed voltages (e.g., 3.15V, 1.8V) or adjustable outputs from 0.8V to 3.95V using external feedback dividers. In adjustable mode, FB1 regulates to 1.0V (typ), and OUT2/OUT3 feedback pins regulate to 0.815V (typ).
How does the spread-spectrum feature (SSEN) function in MAX16993AGJB/VY+T, and what is its impact on EMI?
When SSEN is pulled high to BIAS, the MAX16993AGJB/VY+T enables spread-spectrum modulation, varying the internal oscillator frequency between fSW and (fSW + 6%) at a 4kHz sawtooth rate. This spreads spectral energy across a wider bandwidth, reducing peak radiated emissions by up to 10dB in the 30–1000MHz range. It is particularly effective for passing CISPR-25 Class 5 radiated emissions tests without adding ferrite beads or shielding cans.
What are the thermal characteristics and package options for MAX16993AGJB/VY+T?
MAX16993AGJB/VY+T is offered exclusively in a 32-pin side-wettable QFND-EP package (5mm × 5mm × 0.8mm) with an exposed thermal pad. Its junction-to-ambient thermal resistance (θJA) is 37°C/W on a 4-layer JEDEC board. The device operates from -40°C to +125°C ambient and includes thermal warning (+150°C) and shutdown (+170°C) thresholds with 15°C hysteresis - fully compliant with AEC-Q100 Grade 0 requirements.
Can MAX16993AGJB/VY+T be synchronized to an external clock, and what are the valid SYNC input conditions?
Yes, MAX16993AGJB/VY+T supports external clock synchronization via the SYNC pin. When configured as an input (factory setting), it accepts logic-level clocks from 1.7MHz to 2.4MHz with 50% duty cycle. A logic-high SYNC signal forces fixed-frequency PWM mode; a logic-low enables skip mode under light loads. The SYNC input has 100kΩ internal pulldown and operates with 1.8V logic-high and 0.8V logic-low thresholds.
MAX16993AGJB/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)
MAX16993AGJB/VY+T FAQ
1.How can I place an order for MAX16993AGJB/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16993AGJB/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 MAX16993AGJB/VY+T reliable?
The price and inventory of MAX16993AGJB/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 MAX16993AGJB/VY+T is usually 5 days.
3.What payment methods are accepted for MAX16993AGJB/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16993AGJB/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16993AGJB/VY+T?
MAX16993AGJB/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16993AGJB/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 MAX16993AGJB/VY+T?
For technical support, including MAX16993AGJB/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16993AGJB/VY+T requirements.
6.How does Aetrix verify that MAX16993AGJB/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX16993AGJB/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 MAX16993AGJB/VY+T meets industry standards.
7.What is the process for return or replacement of MAX16993AGJB/VY+T?
All MAX16993AGJB/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16993AGJB/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 MAX16993AGJB/VY+T part is unused and in its original packaging.
Return procedure for MAX16993AGJB/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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