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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Analog Devices Inc./Maxim Integrated MAX16993AGJA/VY+T

Name: MAX16993AGJA/VY+T
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX16993AGJA/VY+T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX16993AGJA/VY+T

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 32-VFQFN Exposed Pad

Datasheet:: MAX16993AGJA/VY+T.pdf

Description:: IC REG BUCK ADJ 3A TRPL 32QFN

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Product details

Overview

MAX16993AGJA/VY+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 rail, consumes only 30µA quiescent current with OUT1 enabled, and supports -40°C to +125°C operation in a 32-pin TQFN-EP package - ideal for ADAS camera modules and infotainment power rails.

For engineers reviewing the MAX16993AGJA/VY+T datasheet, MAX16993AGJA/VY+T pinout, MAX16993AGJA/VY+T application, or MAX16993AGJA/VY+T equivalent, key selection criteria include its 2.1MHz fixed-frequency capability, cascaded architecture (OUT2/OUT3 powered from OUT1), individual enable/reset per channel, spread-spectrum enable (SSEN), and SYNC input for system-level clock synchronization.

Technical Context

The MAX16993AGJA/VY+T implements a current-mode control architecture with forced-PWM and skip modes, enabling stable regulation across wide load ranges while minimizing EMI. Its OUT1 controller features programmable switching frequency (2.1MHz or factory-set 350kHz–1.05MHz), 3.5V–36V input range, and 42V load-dump transient tolerance.

OUT2 and OUT3 operate from OUT1's output, supporting 0.8V–3.95V adjustable or factory-trimmed outputs (e.g., 3.15V, 1.8V), 180° out-of-phase switching, and integrated 3A FETs with R_DS(ON) as low as 50mΩ (low-side). Each channel includes independent EN_, RESET_, and overtemperature/overcurrent protection.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	3.5V to 36V - supports direct connection to automotive battery with 42V load-dump transient immunity.
Switching Frequency	2.1MHz (pin-selectable via CSEL1=GND) - enables compact magnetics and avoids AM band interference.
Quiescent Current	30µA with OUT1 enabled - meets automotive always-on requirements without compromising battery life.
Output Current Capability	Up to 3A per OUT2/OUT3 rail - sufficient for powering SoCs, image sensors, and CAN transceivers.
Operating Temperature	-40°C to +125°C - qualified for under-hood and ADAS module deployment per AEC-Q100 Grade 0.
Package	32-pin TQFN-EP (5mm × 5mm × 0.75mm) with side-wettable leads - supports automated optical inspection (AOI) and robust solder joint reliability.
Protection Features	Overtemperature shutdown (+170°C), short-circuit limiting, individual reset timeout (0.1ms–7.8ms), and UVLO on PV rail - ensures fail-safe behavior in harsh environments.

Pinout & Package

The MAX16993AGJA/VY+T is housed in a 32-pin TQFN-EP (5mm × 5mm × 0.75mm) with exposed pad (EP = GND), optimized for thermal dissipation and automotive AOI compatibility.

Pin/Terminal	Circuit Role	Design Meaning
VSUP	High-voltage input supply	Accepts 3.5V–36V battery input; requires local 0.1µF ceramic bypass.
EN1, EN2, EN3	Independent enable inputs	Active-high digital controls for each buck stage; EN1 gating enables full system sequencing.
OUT1, OUT2, OUT3	Output voltage sense inputs	Feedback nodes for regulation; support fixed (e.g., 3.3V/3.15V/1.8V) or resistor-divider-adjustable outputs.
RESET1, RESET2, RESET3	Open-drain reset outputs	Assert low during undervoltage or startup; timeout programmable (0.1ms–7.8ms) for sequenced system boot.
SSEN, SYNC, CSEL1	Configuration control inputs	SSEN enables spread-spectrum EMI reduction; SYNC synchronizes to external clock (1.7–2.4MHz); CSEL1 selects 2.1MHz or factory-divided frequency.
LX1, LX2, LX3	Switching node outputs	Drive external inductors; require low-inductance layout and ceramic output capacitors for stability.
PGND2, PGND3, GND	Separate power/analog grounds	Isolated ground paths minimize noise coupling between high-current switching and sensitive analog circuitry.

Key Features

Feature	Design Value
Cascaded dual-buck architecture	OUT2/OUT3 powered directly from OUT1 improves overall efficiency by eliminating intermediate LDO losses and reducing component count.
180° out-of-phase switching	Reduces input ripple current and eases input capacitor sizing - critical for space-constrained automotive PCBs.
Individual soft-start timers	4ms for OUT1 and 2.5ms for OUT2/OUT3 prevent inrush current surges and enable controlled power-up sequencing.
Spread-spectrum enable (SSEN)	Instantly reduces peak radiated emissions by modulating fSW ±3% at 4kHz - no firmware or external components required.
AEC-Q100 Grade 0 qualification	Validated for operation from -40°C to +125°C ambient with full electrical characterization - suitable for front-end ADAS and head-unit applications.

Applications

ADAS Camera Power Supply	Automotive Infotainment SoC Core Rail
Use Scenario: Powers image sensor, ISP, and MIPI interface in forward-facing ADAS cameras requiring tight voltage accuracy and low EMI. IC Role / Device Role / Timing Role: Primary PMIC delivering 3.3V (OUT1), 3.15V (OUT2), and 1.8V (OUT3) with synchronized startup and fault reporting. Use Value: Cascaded architecture eliminates discrete LDOs; 2.1MHz switching allows <10mm² total DC-DC footprint; SSEN suppresses EMI near RF-sensitive receivers.	Use Scenario: Supplies core, I/O, and memory rails for automotive-grade application processors in head units and digital clusters. IC Role / Device Role / Timing Role: Multichannel regulator providing sequenced 1.2V core, 3.3V I/O, and 1.8V DDR termination with independent reset assertion. Use Value: Individual EN_/RESET_ pins enable precise power-state coordination with MCU; -40°C to +125°C rating ensures reliability in sealed enclosures.
Telematics Control Unit (TCU) Power	Automotive Gateway ECU Power
Use Scenario: Delivers regulated supplies to LTE/C-V2X modems, GNSS receivers, and microcontrollers in telematics modules. IC Role / Device Role / Timing Role: High-efficiency buck controller (OUT1) powers internal 5V rail, feeding two low-noise 3.3V/1.2V converters (OUT2/OUT3) for RF and logic domains. Use Value: 30µA quiescent current extends battery backup runtime; SYNC input aligns switching edges with other system supplies to reduce beat frequencies.	Use Scenario: Provides isolated, sequenced power to multiple CAN, LIN, and Ethernet PHYs in vehicle gateway ECUs. IC Role / Device Role / Timing Role: Centralized PMIC generating 5V (OUT1), 3.3V (OUT2), and 1.2V (OUT3) with independent enable/disable and fault isolation per domain. Use Value: Overtemperature and overcurrent protection per channel prevents single-point failure; side-wettable QFN ensures solder joint integrity during thermal cycling.

ADAS Camera Power Supply

Automotive Infotainment SoC Core Rail

Use Scenario: Powers image sensor, ISP, and MIPI interface in forward-facing ADAS cameras requiring tight voltage accuracy and low EMI.

IC Role / Device Role / Timing Role: Primary PMIC delivering 3.3V (OUT1), 3.15V (OUT2), and 1.8V (OUT3) with synchronized startup and fault reporting.

Use Value: Cascaded architecture eliminates discrete LDOs; 2.1MHz switching allows <10mm² total DC-DC footprint; SSEN suppresses EMI near RF-sensitive receivers.

Use Scenario: Supplies core, I/O, and memory rails for automotive-grade application processors in head units and digital clusters.

IC Role / Device Role / Timing Role: Multichannel regulator providing sequenced 1.2V core, 3.3V I/O, and 1.8V DDR termination with independent reset assertion.

Use Value: Individual EN_/RESET_ pins enable precise power-state coordination with MCU; -40°C to +125°C rating ensures reliability in sealed enclosures.

Telematics Control Unit (TCU) Power

Automotive Gateway ECU Power

Use Scenario: Delivers regulated supplies to LTE/C-V2X modems, GNSS receivers, and microcontrollers in telematics modules.

IC Role / Device Role / Timing Role: High-efficiency buck controller (OUT1) powers internal 5V rail, feeding two low-noise 3.3V/1.2V converters (OUT2/OUT3) for RF and logic domains.

Use Value: 30µA quiescent current extends battery backup runtime; SYNC input aligns switching edges with other system supplies to reduce beat frequencies.

Use Scenario: Provides isolated, sequenced power to multiple CAN, LIN, and Ethernet PHYs in vehicle gateway ECUs.

IC Role / Device Role / Timing Role: Centralized PMIC generating 5V (OUT1), 3.3V (OUT2), and 1.2V (OUT3) with independent enable/disable and fault isolation per domain.

Use Value: Overtemperature and overcurrent protection per channel prevents single-point failure; side-wettable QFN ensures solder joint integrity during thermal cycling.

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+	3-channel 2.2MHz buck with integrated high-side FETs; supports 3.5V–36V input but lacks spread-spectrum modulation and has fixed 3.3V/1.8V/1.2V outputs.	Targeted at simpler gateways with fixed-rail requirements; no resistor-adjustable outputs or SSEN pin.	Select when fixed outputs and higher integration (no external high-side FETs) outweigh need for EMI flexibility and voltage programmability.
TPS650361QRGZTQ1	Triple-buck PMIC with 2.2MHz switching, 3.5V–36V input, and AEC-Q100 Grade 1 rating; includes integrated LDOs but no spread-spectrum or SYNC input.	Designed for body electronics with lower ambient temperature requirements; lacks automotive-grade sequencing robustness above +105°C.	Select for cost-sensitive body control modules where Grade 1 suffices and LDO integration reduces BoM count.

Compared with MAX20096ATPA/VY+ and TPS650361QRGZTQ1, the MAX16993AGJA/VY+T uniquely combines 2.1MHz operation, pin-selectable spread-spectrum, cascaded architecture, and Grade 0 temperature support - making it optimal for high-reliability ADAS and infotainment power delivery where EMI control and thermal margin are critical.

Availability

MAX16993AGJA/VY+T is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment SoC power rails, and telematics control units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX16993AGJA/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) designs precision analog, mixed-signal, and power-management ICs for automotive, industrial, and communications markets.

The MAX16993 belongs to Maxim's automotive-qualified PMIC portfolio, engineered specifically for high-efficiency, low-EMI, multirail power delivery in safety-critical ADAS and infotainment systems operating under extreme thermal and electrical stress.

FAQ

What is the maximum input voltage rating for MAX16993AGJA/VY+T, and how does it handle automotive transients?

The MAX16993AGJA/VY+T supports continuous input voltages up to 36V and is protected against load-dump transients up to 42V. This is achieved through internal clamping and robust gate-drive design on the high-voltage controller (OUT1), enabling direct connection to the vehicle battery without external transient suppression components in most cases. The device remains fully functional during ISO 7637-2 Pulse 5a events when properly decoupled.

Can MAX16993AGJA/VY+T generate three independent output voltages, and how are they configured?

Yes, MAX16993AGJA/VY+T provides three independent regulated outputs: OUT1 (high-voltage buck controller), OUT2, and OUT3 (low-voltage synchronous buck converters). OUT1 supports factory-trimmed fixed outputs (e.g., 3.3V, 5.0V) or resistor-divider-adjustable 3.0V–5.5V. OUT2/OUT3 support fixed options (e.g., 3.15V, 1.8V) or adjustable 0.8V–3.95V via external feedback dividers. All outputs are independently enabled and monitored via dedicated EN_ and RESET_ pins.

Does MAX16993AGJA/VY+T support synchronization to an external clock, and what are the timing constraints?

Yes, MAX16993AGJA/VY+T includes a SYNC input that accepts external clock signals from 1.7MHz to 2.4MHz with 50% duty cycle. When driven high, it forces fixed-frequency PWM mode; when grounded or left floating, the device enters skip mode under light loads. The SYNC function is factory-configurable and requires no additional configuration registers - enabling deterministic timing alignment across multiple MAX16993AGJA/VY+T devices or other compatible supplies in the same system.

What thermal performance can be expected from MAX16993AGJA/VY+T in a typical automotive layout?

In a standard 4-layer PCB with 2oz copper and recommended thermal vias to the exposed pad, the MAX16993AGJA/VY+T achieves θ_JA = 29°C/W (TQFN) and θ_JC = 1.7°C/W. At 3A load per low-voltage rail and 14V input, junction temperature rise remains below 45°C above ambient at +70°C board temperature - well within the +150°C absolute max and supporting reliable operation at full rating across the -40°C to +125°C ambient range.

How does the spread-spectrum feature (SSEN) affect electromagnetic compatibility in MAX16993AGJA/VY+T?

When SSEN is pulled high (to BIAS), the MAX16993AGJA/VY+T modulates its internal oscillator frequency between f_SW and f_SW + 6% at a 4kHz sawtooth rate. This spreads spectral energy across a ~126kHz bandwidth (at 2.1MHz center), reducing peak radiated emissions by up to 10dBµV in conducted and radiated EMI tests - particularly effective for passing CISPR 25 Class 5 without adding ferrite beads or shielding. The feature is hardware-enabled and requires no software intervention.

MAX16993AGJA/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:: Active

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)

MAX16993AGJA/VY+T FAQ

1.How can I place an order for MAX16993AGJA/VY+T through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX16993AGJA/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 MAX16993AGJA/VY+T reliable?

The price and inventory of MAX16993AGJA/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 MAX16993AGJA/VY+T is usually 5 days.

3.What payment methods are accepted for MAX16993AGJA/VY+T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16993AGJA/VY+T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX16993AGJA/VY+T?

MAX16993AGJA/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX16993AGJA/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 MAX16993AGJA/VY+T?

For technical support, including MAX16993AGJA/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16993AGJA/VY+T requirements.

6.How does Aetrix verify that MAX16993AGJA/VY+T is sourced from the original manufacturer or authorized distributors?

All MAX16993AGJA/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 MAX16993AGJA/VY+T meets industry standards.

7.What is the process for return or replacement of MAX16993AGJA/VY+T?

All MAX16993AGJA/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16993AGJA/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 MAX16993AGJA/VY+T part is unused and in its original packaging.

Return procedure for MAX16993AGJA/VY+T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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