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Analog Devices Inc./Maxim Integrated MAX16993AGJL/V+
- Part No.:
- MAX16993AGJL/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MAX16993AGJL/V+.pdf
- Description:
- IC REG BUCK ADJ 3A TRPL 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,392
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Product details
Overview
MAX16993AGJL/V+ 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). It operates from 3.5V–36V input, delivers up to 3A per low-voltage channel, supports 2.1MHz switching, and consumes only 30µA quiescent current - enabling compact, efficient power rails for ADAS camera modules, infotainment head units, and domain controllers.
For engineers reviewing the MAX16993AGJL/V+ datasheet, MAX16993AGJL/V+ pinout, MAX16993AGJL/V+ application, or MAX16993AGJL/V+ equivalent, key selection criteria include its triple-output architecture with individual enable/reset, spread-spectrum EMI reduction, SYNC input for system-level clock synchronization, and side-wettable QFND-EP package for automated optical inspection in automotive PCB assembly.
Technical Context
The MAX16993AGJL/V+ implements a current-mode control architecture across all three buck regulators, supporting forced-PWM and skip modes. OUT1 uses external high-side/low-side MOSFETs and integrates bootstrap gate drive (BST1/DH1/DL1), while OUT2 and OUT3 integrate 50–110mΩ synchronous FETs and operate from OUT1's output as their input supply.
Its oscillator supports pin-selectable 2.1MHz operation (CSEL1 = GND) or factory-programmed lower frequencies (1.05MHz/525kHz/420kHz/350kHz), and includes dedicated SSEN for on-demand spread-spectrum modulation (±6% frequency dither at 4kHz) and SYNC I/O configurable as input for external clock synchronization (1.7–2.4MHz) or skip-mode enable.
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. |
| OUT1 Switching Frequency | 2.1MHz (pin-selectable); eliminates AM-band interference and reduces inductor/capacitor size by >50% vs. 500kHz designs. |
| OUT2/OUT3 Output Current | Up to 3.0A per channel; integrated FETs with 50–90mΩ low-side RDS(on) minimize conduction loss at full load. |
| Quiescent Current | 30µA with OUT1 enabled; meets automotive "always-on" low-power requirements for telematics and body control modules. |
| Output Voltage Accuracy | ±2.5% for OUT1 (PWM mode), ±3.0% for OUT2/OUT3 - ensures stable microcontroller core/logic rail regulation across -40°C to +125°C. |
| Thermal Protection | Thermal shutdown at +170°C with 15°C hysteresis; thermal warning at +150°C - provides fail-safe operation in under-hood environments. |
| Reset Timeout | Programmable 0.1ms to 7.8ms per channel (via OTP options); enables precise power sequencing for multi-rail SoCs. |
Pinout & Package
MAX16993AGJL/V+ is housed in a 32-pin side-wettable QFND-EP package (5mm × 5mm × 0.8mm), optimized for automated optical inspection and high-reliability solder joint formation in automotive manufacturing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP | High-voltage input supply | Accepts 3.5V–36V battery input; includes undervoltage lockout at 4.5V startup threshold. |
| EN1 / EN2 / EN3 | Independent enable inputs | Active-high digital controls allow staggered power-up: EN1 enables OUT1 first, then EN2/EN3 enable cascaded OUT2/OUT3 after soft-start. |
| RESET1 / RESET2 / RESET3 | Open-drain reset outputs | Assert low when respective output drops >6%; timeout programmable to coordinate with MCU boot sequence timing. |
| CSEL1 | Buck 1 clock select | GND = 2.1MHz; BIAS = factory-divided frequency (1.05MHz/525kHz/420kHz/350kHz) - enables EMI optimization without changing layout. |
| SSEN | Spread-spectrum enable | BIAS = ±6% frequency dither at 4kHz; reduces peak radiated emissions without altering component count or layout. |
| SYNC | Frequency synchronization I/O | Configurable as input: logic-high enables forced-PWM; external 1.7–2.4MHz clock synchronizes all three channels to suppress beat frequencies. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-output architecture with cascaded topology | OUT2/OUT3 powered from OUT1 output improves overall efficiency by eliminating separate input filtering and reducing total solution footprint. |
| 180° out-of-phase operation of OUT2/OUT3 | Reduces input capacitance RMS current by ~30%, lowering voltage ripple on shared OUT1 rail and easing capacitor selection. |
| Individual soft-start timers | 4ms for OUT1, 2.5ms for OUT2/OUT3 - prevents inrush current overload during cold-cranking and enables deterministic power sequencing. |
| AEC-Q100 Grade-0 qualification | Rated for -40°C to +125°C ambient operation with validated reliability testing - suitable for engine bay and front-end ADAS applications. |
| Side-wettable QFND-EP package | Exposed pad + side-wettable leads enable AOI-compatible solder joint inspection - critical for zero-defect automotive production requirements. |
Applications
| ADAS Camera Module Power Supply | Automotive Infotainment Head Unit |
|---|---|
Use Scenario: Dual-sensor camera system requiring isolated 3.3V image sensor rail and 1.2V ISP core rail with tight sequencing and low EMI. IC Role / Device Role / Timing Role: MAX16993AGJL/V+ provides OUT1 (3.3V) for sensors, OUT2 (1.2V) for ISP, and OUT3 (1.8V) for memory interface - all synchronized via single SYNC signal. Use Value: 2.1MHz operation avoids AM band; spread-spectrum reduces radiated emissions below CISPR-25 Class 5 limits without added shielding. | Use Scenario: Central display unit needing 5.0V USB port rail, 3.15V audio codec rail, and 1.8V SoC I/O rail with independent reset signaling. IC Role / Device Role / Timing Role: MAX16993AGJL/V+ delivers three regulated outputs with individual EN_/RESET_ pins - enabling MCU-controlled power-up order and fault isolation. Use Value: 30µA quiescent current extends battery life in accessory-off mode; AEC-Q100 qualification ensures reliability over 15-year vehicle lifetime. |
| Automotive Domain Controller | Body Control Module (BCM) |
Use Scenario: Zonal gateway requiring 5.0V microcontroller core, 3.3V CAN transceiver, and 1.2V Ethernet PHY rails with coordinated reset assertion. IC Role / Device Role / Timing Role: MAX16993AGJL/V+ integrates all three rails in one package; RESET1/2/3 provide independent power-good signals to domain MCU. Use Value: Cascaded architecture reduces component count vs. discrete solutions; 32-pin QFND-EP simplifies routing and improves thermal performance over TQFN. | Use Scenario: Low-power BCM managing door locks, lighting, and HVAC with always-on monitoring capability. IC Role / Device Role / Timing Role: MAX16993AGJL/V+ powers MCU (3.3V), LIN transceiver (5.0V), and sensor interface (1.8V) - with EN1 disabling all rails during sleep. Use Value: 30µA quiescent current meets ISO 16750-2 parasitic draw limits; thermal warning output (ERR) enables predictive maintenance before shutdown. |
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 |
|---|---|---|---|
| MAX20096ATGB/V+ | Single 3.5V–36V buck controller + dual 1.5A integrated bucks; 2.2MHz max frequency; no spread-spectrum; different pinout and OTP options. | Lacks SSEN and programmable reset timeout; requires external components for EMI mitigation in stringent CISPR-25 environments. | Select when lower cost and simpler configuration outweigh need for on-demand EMI reduction and precise reset timing. |
| TPS653221AQPWPRQ1 | Three integrated bucks (2A/2A/300mA); fixed 2.1MHz; no CSEL1/SSEN; different enable/reset behavior and thermal thresholds. | No spread-spectrum or SYNC input; reset timeout not programmable; lower current capability on third channel limits use in multi-rail SoC designs. | Select for cost-sensitive body electronics where full feature set of MAX16993AGJL/V+ is unnecessary. |
Compared with MAX20096ATGB/V+ and TPS653221AQPWPRQ1, the MAX16993AGJL/V+ uniquely combines pin-selectable 2.1MHz operation, on-demand spread-spectrum (SSEN), and programmable reset timeout - making it optimal for EMI-constrained ADAS and domain controller applications requiring precise power sequencing.
Availability
MAX16993AGJL/V+ is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment head units, and domain controllers requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for MAX16993AGJL/V+ 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 MAX16993AGJL/V+ belongs to Maxim's automotive-grade PMIC portfolio, engineered specifically for high-reliability, multi-rail power conversion in safety-critical vehicle systems operating from -40°C to +125°C.
FAQ
What is the maximum input voltage rating for MAX16993AGJL/V+ and how does it handle automotive transients?
The MAX16993AGJL/V+ supports a continuous input voltage range of 3.5V to 36V and is protected against load-dump transients up to 42V for ≤50ns. This allows direct connection to the automotive battery without external transient protection in most cases. The device incorporates internal clamping and robust gate-drive design to maintain regulation during cranking and jump-start events. MAX16993AGJL/V+ also features undervoltage lockout with 4.5V startup threshold and 2.7V PV UVLO to prevent malfunction during brownout conditions.
Does MAX16993AGJL/V+ support synchronization to an external clock, and what are the valid frequency and duty-cycle ranges?
Yes, MAX16993AGJL/V+ supports external clock synchronization via its SYNC pin, configurable as an input. When enabled, it accepts external clock signals between 1.7MHz and 2.4MHz with a 50% ±10% duty cycle. Synchronization forces all three buck regulators into fixed-frequency forced-PWM mode, eliminating beat frequencies in multi-supply systems. The SYNC function is factory-programmable and documented in the Selector Guide; MAX16993AGJL/V+ does not support SYNC as an output.
How does the spread-spectrum feature (SSEN) work on MAX16993AGJL/V+, and what impact does it have on EMI?
When SSEN is pulled high to BIAS, MAX16993AGJL/V+ enables spread-spectrum frequency modulation: the internal oscillator varies between fSW and fSW + 6% with a 4kHz sawtooth profile. This spreads radiated energy across a wider bandwidth, reducing peak emissions by up to 10dB - helping meet CISPR-25 Class 5 limits without adding ferrites or shielding. The feature is software-invisible and requires no layout changes; MAX16993AGJL/V+ reverts to fixed-frequency operation when SSEN is grounded.
What are the output voltage options for each buck regulator in MAX16993AGJL/V+, and how are they configured?
MAX16993AGJL/V+ offers factory-trimmed fixed outputs or resistor-divider adjustable outputs. OUT1 supports 3.3V (FB1 = GND), 5.0V (FB1 = BIAS), or 3.0V–5.5V adjustable (FB1 = divider, regulated at 1.0V). OUT2/OUT3 support 0.8V–3.95V adjustable (feedback to OUT2/OUT3 pins, regulated at 0.815V) or factory-set values like 3.15V or 1.8V. Configuration is done at board level using FB1/OUT2/OUT3 connections - no OTP programming required for standard variants.
Is MAX16993AGJL/V+ pin-compatible with other devices in the MAX1699x family, and what package options are available?
MAX16993AGJL/V+ uses the 32-pin side-wettable QFND-EP package (5mm × 5mm × 0.8mm) and is not pin-compatible with MAX16992 or MAX16994 due to differences in pin assignment (e.g., CSEL1 location, RESET pin mapping, and SYNC functionality). It shares the same footprint as MAX16993 variants with identical suffixes (e.g., MAX16993AGJL+), but differs from TQFN-packaged versions (e.g., MAX16993ATJL+) in thermal resistance (θJA = 37°C/W vs. 29°C/W) and solder joint inspection capability.
MAX16993AGJL/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tube
- 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)
MAX16993AGJL/V+ FAQ
1.How can I place an order for MAX16993AGJL/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16993AGJL/V+ 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 MAX16993AGJL/V+ reliable?
The price and inventory of MAX16993AGJL/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16993AGJL/V+ is usually 5 days.
3.What payment methods are accepted for MAX16993AGJL/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16993AGJL/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16993AGJL/V+?
MAX16993AGJL/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16993AGJL/V+ 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 MAX16993AGJL/V+?
For technical support, including MAX16993AGJL/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16993AGJL/V+ requirements.
6.How does Aetrix verify that MAX16993AGJL/V+ is sourced from the original manufacturer or authorized distributors?
All MAX16993AGJL/V+ 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 MAX16993AGJL/V+ meets industry standards.
7.What is the process for return or replacement of MAX16993AGJL/V+?
All MAX16993AGJL/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16993AGJL/V+, 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 MAX16993AGJL/V+ part is unused and in its original packaging.
Return procedure for MAX16993AGJL/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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