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Analog Devices Inc./Maxim Integrated MAX16993AGJC/VY+GA
- Part No.:
- MAX16993AGJC/VY+GA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MAX16993AGJC/VY+GA.pdf
- Description:
- IC REG BUCK ADJ 3A TRPL 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,744
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Product details
Overview
MAX16993AGJC/VY+GA from Maxim Integrated is a 2.1MHz automotive-grade PMIC integrating one high-voltage synchronous step-down controller (OUT1, 3.5–36V input, 3.3V/5.0V fixed or adjustable output) and two cascaded low-voltage synchronous step-down converters (OUT2/OUT3, 0.8–3.95V, up to 3A each). It delivers <30µA quiescent current in no-load operation and operates across –40°C to +125°C for engine control unit (ECU) power rail generation.
For engineers reviewing the MAX16993AGJC/VY+GA datasheet, MAX16993AGJC/VY+GA pinout, MAX16993AGJC/VY+GA application, or MAX16993AGJC/VY+GA equivalent, key selection criteria include its AEC-Q100 qualification, side-wettable QFND-EP package for solder-joint inspection, 2.1MHz switching frequency enabling compact magnetics, and individual enable/reset per channel for fault-isolated automotive subsystems.
Technical Context
The MAX16993AGJC/VY+GA implements a current-mode architecture with forced-PWM and skip modes, supporting synchronization via SYNC input (1.7–2.4MHz range) and spread-spectrum modulation via SSEN to reduce EMI. Its OUT1 controller uses external high-side/low-side MOSFETs, while OUT2/OUT3 integrate power FETs with 50–110mΩ RDS(on).
Three independent regulation loops are implemented: OUT1 features FB1 feedback with 1.0V reference (adjustable mode) or factory-trimmed 3.3V/5.0V outputs; OUT2/OUT3 use dedicated OUT2/OUT3 sense pins and provide ±3% voltage accuracy over load, line, and temperature without precision resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range (OUT1) | 3.5V to 36V - supports direct connection to automotive battery with 42V load-dump transient tolerance. |
| Switching Frequency | 2.1MHz (pin-selectable) - enables small inductors/capacitors and avoids AM-band interference. |
| Quiescent Current | 30µA with OUT1 enabled - meets automotive always-on (e.g., CAN wake-up) ultra-low standby power requirements. |
| Output Current (OUT2/OUT3) | Up to 3.0A each - sufficient for powering microcontrollers, sensors, and interface ICs in ADAS domains. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive environments per AEC-Q100 Grade 0. |
| Package | 32-pin side-wettable QFND-EP (5mm × 5mm × 0.8mm) - supports automated optical solder-joint inspection for high-reliability manufacturing. |
| Protection Features | Overtemperature shutdown (+170°C), short-circuit limiting, individual reset timeout (0.1–7.8ms programmable), and UVLO on PV rail. |
Pinout & Package
MAX16993AGJC/VY+GA is housed in a 32-pin side-wettable QFND-EP package (5mm × 5mm × 0.8mm) with exposed pad tied to GND for thermal dissipation (θJA = 37°C/W). The package supports automated optical inspection of solder joints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP | Main HV supply input | Accepts 3.5–36V battery input; requires ≥0.1µF local bypass; withstands 42V transients. |
| EN1, EN2, EN3 | Independent enable inputs | Active-high digital controls; EN1 enables entire PMIC; EN2/EN3 independently activate OUT2/OUT3 after OUT1 startup. |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Assert low when respective output drops >6% below nominal; timeout programmable (0.1–7.8ms) for sequenced system boot. |
| SYNC | Frequency synchronization I/O | Configurable as input: accepts 1.7–2.4MHz external clock to force fixed-frequency PWM or enable skip mode when pulled low. |
| SSEN | Spread-spectrum enable | Connect to BIAS to modulate fSW ±3% at 4kHz - reduces peak EMI without changing layout or components. |
| CSEL1 | Buck 1 clock select | GND = 2.1MHz; BIAS = factory-programmed divide-by-2/4/5/6 (1.05MHz/525kHz/420kHz/350kHz). |
| FB1, OUT2, OUT3 | Feedback/sense inputs | FB1 regulates OUT1 (1.0V ref in adjustable mode); OUT2/OUT3 sense downstream voltages for closed-loop control. |
| LX1, LX2, LX3 | Switching node terminals | High-impedance when off; drive external (LX1) or integrated (LX2/LX3) power FETs; require low-ESR ceramic caps to PGND. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-output architecture with cascaded topology | OUT2/OUT3 powered from OUT1 improves overall efficiency vs. independent buck stages and reduces component count. |
| Individual soft-start timing | 4ms for OUT1, 2.5ms for OUT2/OUT3 - prevents inrush current overload during cold-cranking and enables controlled power sequencing. |
| AEC-Q100 Grade 0 qualification | Validated for –40°C to +125°C operation with thermal shutdown at +170°C - meets automotive safety-critical power requirements. |
| Side-wettable QFND-EP package | Enables AOI-compatible solder-joint inspection - critical for zero-defect manufacturing in automotive Tier-1 production. |
| Factory-trimmed output options | Fixed 3.3V/5.0V (OUT1) and 1.2V/1.8V/3.15V (OUT2/OUT3) achieve ±3% accuracy without 0.1% resistors - lowers BOM cost and design risk. |
Applications
| Advanced Driver Assistance Systems (ADAS) Camera Module | Automotive Infotainment Head Unit |
|---|---|
Use Scenario: Powering image sensor, ISP, and MIPI interface in front-facing ADAS camera operating under stop/start and load-dump conditions. IC Role / Device Role / Timing Role: Primary PMIC delivering three regulated rails: 3.3V for sensor interface, 1.8V for MIPI PHY, and 1.2V for ISP core - all sequenced and monitored. Use Value: 2.1MHz switching avoids interference with camera pixel clock harmonics; individual RESET_ signals enable fault isolation without system-wide reset. |
Use Scenario: Supplying SoC, display driver, and audio codec in infotainment head unit with always-on CAN wake capability. IC Role / Device Role / Timing Role: Central power manager providing 5.0V (SoC I/O), 3.3V (display interface), and 1.2V (SoC core) with ultra-low 30µA quiescent current in standby. Use Value: Cascaded architecture reduces heat generation vs. discrete DC-DCs; side-wettable package ensures solder-joint reliability in vibration-prone dashboard mounting. |
| Engine Control Unit (ECU) Subsystem | Automotive Gateway Module |
Use Scenario: Generating isolated logic and analog supplies for MCU, CAN transceivers, and sensor signal conditioning in under-hood ECU. IC Role / Device Role / Timing Role: High-voltage controller (OUT1) powers secondary regulators (OUT2/OUT3) that feed MCU cores, ADC references, and communication interfaces. Use Value: 36V input range and 42V transient protection eliminate need for external TVS; –40°C to +125°C rating ensures operation during extreme thermal cycling. |
Use Scenario: Powering multi-protocol gateway (CAN FD, LIN, Ethernet) requiring tightly regulated, low-noise supplies for high-speed PHYs and secure MCU. IC Role / Device Role / Timing Role: Triple-output regulator with SYNC input synchronized to Ethernet PHY clock to minimize beat-frequency noise coupling into data lanes. Use Value: Spread-spectrum (SSEN) and SYNC synchronization reduce radiated emissions below CISPR 25 Class 5 limits without shielding or ferrites. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20090ATPA/VY+ | Single 3.5–36V buck controller (no integrated dual low-VOUT converters); supports higher 5A OUT1 current; includes watchdog timer. | Requires external buck converters for secondary rails - increases board area and BOM count but offers greater flexibility in output voltage selection. | Select when higher OUT1 current (>3.75A) or watchdog functionality is required; not suitable for space-constrained designs needing integrated triple output. |
| TPS65381A-Q1 | Triple-output PMIC with integrated LDOs (not just bucks); lower max fSW (2.2MHz max); supports functional safety (ISO 26262 ASIL-B ready). | Includes 150mA LDOs ideal for biasing analog sensors or CAN transceivers; safety documentation and FIT rate data provided. | Select when functional safety certification or mixed buck/LDO power trees are needed; MAX16993AGJC/VY+GA offers higher switching frequency and smaller passive components. |
Compared with MAX20090ATPA/VY+ and TPS65381A-Q1, the MAX16993AGJC/VY+GA provides optimal integration density for compact ADAS modules, balancing 2.1MHz operation, cascaded efficiency, and side-wettable manufacturability - whereas alternatives trade integration for current capability or safety compliance.
Availability
MAX16993AGJC/VY+GA is available at Aetrix Electronics and suitable for automotive ECU, ADAS camera, infotainment head unit, and gateway module designs requiring stable component supply across extended temperature ranges and AEC-Q100-compliant sourcing.
Supply support for MAX16993AGJC/VY+GA 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 solutions for automotive, industrial, and communications markets.
The MAX16993AGJC/VY+GA belongs to Maxim's automotive-qualified PMIC product line, designed specifically for compact, high-efficiency, and thermally robust power delivery in safety-critical vehicle subsystems such as ADAS and body electronics.
FAQ
What is the maximum input voltage rating for MAX16993AGJC/VY+GA, and how is it protected against automotive transients?
The MAX16993AGJC/VY+GA supports a continuous input voltage range of 3.5V to 36V on VSUP and is protected against load-dump transients up to 42V for ≤50ns. This protection is inherent to the internal high-voltage process and does not require external TVS diodes for standard ISO 7637-2 Pulse 5a compliance. The device remains functional during cranking and jump-start events typical in 12V automotive systems.
Does MAX16993AGJC/VY+GA support output voltage sequencing, and how is it implemented?
Yes, MAX16993AGJC/VY+GA supports hardware-based power sequencing via independent enable inputs (EN1, EN2, EN3) and individual reset outputs (RESET1–RESET3). EN1 must be asserted first to start OUT1's 4ms soft-start; only after OUT1 regulation is stable can EN2/EN3 be asserted to initiate 2.5ms soft-starts on OUT2/OUT3. RESET_ timeout periods (0.1–7.8ms) are factory-programmed to enforce precise inter-rail timing.
Can MAX16993AGJC/VY+GA operate in forced-PWM mode, and what is required to enable it?
Yes, MAX16993AGJC/VY+GA supports forced-PWM mode via the SYNC pin. When SYNC is pulled high to BIAS (or driven by an external 1.7–2.4MHz clock), the device disables skip mode and maintains constant 2.1MHz switching regardless of load. This eliminates audible noise and ensures predictable EMI behavior - essential for camera and radar modules where frequency jitter could interfere with signal integrity.
What is the purpose of the side-wettable feature in the QFND-EP package of MAX16993AGJC/VY+GA?
The side-wettable QFND-EP package exposes solderable sidewalls on all perimeter leads, enabling automated optical inspection (AOI) of solder joint fillets during reflow. This is mandated by many automotive Tier-1 manufacturers to verify void-free, high-reliability interconnects - especially critical for under-hood applications subject to thermal cycling and mechanical vibration where solder fatigue is a primary failure mode.
How does the spread-spectrum function (SSEN) reduce EMI in MAX16993AGJC/VY+GA, and what is its operational impact?
When SSEN is pulled high to BIAS, MAX16993AGJC/VY+GA modulates its 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 - helping meet CISPR 25 Class 5 limits without adding shielding or filter components. No performance or efficiency penalty is incurred.
MAX16993AGJC/VY+GA 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)
MAX16993AGJC/VY+GA FAQ
1.How can I place an order for MAX16993AGJC/VY+GA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16993AGJC/VY+GA 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+GA reliable?
The price and inventory of MAX16993AGJC/VY+GA 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+GA is usually 5 days.
3.What payment methods are accepted for MAX16993AGJC/VY+GA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16993AGJC/VY+GA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16993AGJC/VY+GA?
MAX16993AGJC/VY+GA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16993AGJC/VY+GA 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+GA?
For technical support, including MAX16993AGJC/VY+GA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16993AGJC/VY+GA requirements.
6.How does Aetrix verify that MAX16993AGJC/VY+GA is sourced from the original manufacturer or authorized distributors?
All MAX16993AGJC/VY+GA 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+GA meets industry standards.
7.What is the process for return or replacement of MAX16993AGJC/VY+GA?
All MAX16993AGJC/VY+GA units undergo pre-shipment inspection (PSI). If there is an issue with MAX16993AGJC/VY+GA, 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+GA part is unused and in its original packaging.
Return procedure for MAX16993AGJC/VY+GA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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