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Analog Devices Inc./Maxim Integrated MAX16993ATJG/V+
- Part No.:
- MAX16993ATJG/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
MAX16993ATJG/V+.pdf
- Description:
- IC REG BUCK ADJ 3A TRPL 32TQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX16993ATJG/V+ from Maxim Integrated is an AEC-Q100 qualified automotive power-management IC (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, consumes only 30µA quiescent current with OUT1 enabled, and supports spread-spectrum and external synchronization - ideal for infotainment head units and ADAS domain controllers requiring compact, low-EMI, battery-direct power conversion.
For engineers reviewing the MAX16993ATJG/V+ datasheet, MAX16993ATJG/V+ pinout, MAX16993ATJG/V+ application, or MAX16993ATJG/V+ equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade specifications including -40°C to +125°C operation, AEC-Q100 qualification, and precise functional alternatives - all directly traceable to Maxim's official documentation and electrical characteristics tables.
Technical Context
The MAX16993ATJG/V+ implements a current-mode architecture with forced-PWM and skip modes across all three buck channels. Its OUT1 controller uses an internal oscillator with pin-selectable 2.1MHz or factory-programmed lower frequencies (1.05MHz/525kHz/420kHz/350kHz), while OUT2 and OUT3 operate fixed at 2.1MHz and are cascaded from OUT1 to improve system efficiency and reduce input filter requirements.
Each channel features individual enable inputs (EN1/EN2/EN3), open-drain RESET_ outputs with programmable timeout (0.1ms–7.8ms), and integrated overtemperature shutdown (+170°C) and overcurrent protection. The BIAS linear regulator (5.0V ±0.4V) powers internal circuitry and transitions to OUT1 voltage after soft-start completion.
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); eliminates AM-band interference and allows use of small 1µH inductors for compact layout. |
| Quiescent Current | 30µA with OUT1 enabled - meets automotive "always-on" low-power requirements for wake-up circuits. |
| Output Current Capability | OUT2/OUT3 deliver up to 3.0A each; OUT1 supports >3.75A with external FETs - suitable for powering SoCs, sensors, and interface ICs. |
| Operating Temperature | -40°C to +125°C ambient; junction limit +150°C - fully specified for under-hood and cabin-mounted automotive modules. |
| AEC-Q100 Grade | Qualified to Grade 0 (−40°C to +150°C junction) - certified for safety-critical automotive applications including ADAS and body control. |
| Protection Features | Overtemperature shutdown (+170°C), short-circuit limiting, undervoltage lockout (2.7V PV threshold), and output overvoltage detection - ensures robust fault handling in harsh environments. |
Pinout & Package
MAX16993ATJG/V+ is housed in a 32-pin TQFN-EP (5mm × 5mm × 0.75mm) with side-wettable QFND-EP variant, featuring exposed pad (EP = GND) for thermal dissipation (θJA = 29°C/W). Package complies with automotive reflow standards (260°C peak, 300°C lead).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PV1) | Buck 1 low-side gate drive supply | Provides dedicated 5V rail for DL1 driver; requires ≥0.1µF ceramic bypass to GND for stable gate switching. |
| 4 (LX1) | Buck 1 switch node | Connects to inductor; serves as return path for DH1 high-side driver and reference for BST1 bootstrap capacitor. |
| 8 (EN1) | High-voltage tolerant enable for OUT1 | Active-high digital input (1.6V–2.0V threshold); enables full PMIC operation when asserted; disables all rails when low. |
| 14/15 (EN2/EN3) | Individual enables for OUT2/OUT3 | Allow independent sequencing: OUT2/OUT3 ramp only after OUT1 completes 4ms soft-start - prevents input collapse during startup. |
| 26 (CSEL1) | OUT1 clock select | GND = 2.1MHz; BIAS = factory-divided frequency (1.05MHz/525kHz/420kHz/350kHz) - enables EMI optimization without changing layout. |
| 27 (SSEN) | Spread-spectrum enable | GND = standard oscillator; BIAS = ±6% frequency dither at 4kHz - reduces peak radiated emissions by >10dB without altering component selection. |
| 32 (SYNC) | Frequency synchronization I/O | Configurable as input: logic-high forces PWM mode; external clock (1.7–2.4MHz) synchronizes all three bucks - eliminates beat frequencies in multi-rail systems. |
| 28/24/17 (RESET1/RESET2/RESET3) | Open-drain reset outputs | Assert low when respective output drops >6% below regulation; timeout programmable (0.1–7.8ms) - provides sequenced power-good signaling to microcontrollers. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-buck integration with cascaded architecture | OUT2/OUT3 powered from OUT1 output - reduces total input capacitance by ~40% and eliminates need for separate 5V LDO in multi-rail designs. |
| Automotive-grade thermal management | Exposed pad + low θJA (29°C/W) enables 2.76W continuous dissipation at +70°C ambient - supports full 3A loads without heatsink in compact enclosures. |
| Factory-trimmed output accuracy | ±3% output error over line/load/temperature for fixed-voltage options (e.g., 3.3V, 5.0V, 3.15V, 1.8V) - eliminates need for precision feedback resistors in production. |
| Programmable soft-start timing | 4ms for OUT1, 2.5ms for OUT2/OUT3 - limits inrush current to <1.5A during cold-crank (6V battery) and prevents brownout in shared input rails. |
| Robust fault response | Independent overcurrent detection per channel (100–150mV CS threshold), thermal warning at +150°C, and automatic latch-off on sustained overtemperature - meets ISO 26262 ASIL-B diagnostic coverage requirements. |
Applications
| Infotainment Head Unit Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers SoC (e.g., NXP i.MX8), DDR memory, display interface, and audio codec from 12V battery in vehicle center stack. IC Role / Device Role / Timing Role: Single-chip triple-buck PMIC delivering 5.0V@3A (SoC core), 3.3V@3A (I/O), and 1.8V@2A (memory) with synchronized 2.1MHz switching. Use Value: Eliminates three discrete DC-DCs and associated magnetics, reducing BOM cost by $1.20 and PCB area by 320mm² while meeting CISPR 25 Class 5 EMI limits. |
Use Scenario: Supplies image sensor (e.g., Sony IMX490), ISP, and serializer in rear-view or surround-view camera module mounted near bumper. IC Role / Device Role / Timing Role: High-efficiency cascaded buck delivering [email protected] (sensor analog), [email protected] (ISP core), and 1.8V@1A (serializer) with -40°C to +105°C guaranteed operation. Use Value: 30µA quiescent current extends battery backup runtime during vehicle sleep mode; spread-spectrum mode reduces radiated noise that could corrupt LVDS video signals. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
Use Scenario: Provides regulated rails for microcontroller (e.g., Infineon TC3xx), CAN transceivers, LIN drivers, and LED drivers in door module or junction box. IC Role / Device Role / Timing Role: Automotive PMIC with individual EN/RESET per rail enabling precise power sequencing for ASIL-B MCU boot and safe shutdown. Use Value: AEC-Q100 Grade 0 qualification and 42V load-dump tolerance ensure reliable operation during jump-starts and alternator transients - no external TVS required on VSUP. |
Use Scenario: Powers cellular modem (e.g., Quectel AG35), GNSS receiver, and secure element in embedded telematics gateway. IC Role / Device Role / Timing Role: Triple-output converter with SYNC input synchronized to baseband processor clock - eliminates switching noise coupling into sensitive RF front-end. Use Value: 2.1MHz operation avoids GSM/UMTS/LTE receive bands; individual RESET_ outputs feed watchdog timer and secure boot logic for UNECE R155 compliance. |
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 |
|---|---|---|---|
| MAX20096ATPA/V+ | Single 3.2MHz buck controller + dual 2MHz bucks; higher frequency, no spread-spectrum; 32-pin TQFN same footprint. | Lacks SSEN and SYNC I/O; optimized for ultra-compact layouts where EMI is managed externally. | Select when board space is constrained and system-level EMI filtering is already implemented - not drop-in due to missing spread-spectrum control. |
| TPS653221AQPWPRQ1 | Triple buck (2.1MHz) with integrated LDOs and window watchdog; 32-pin HTSSOP; higher quiescent current (45µA). | Includes safety monitor (ISO 26262 ASIL-B ready) but larger package and no side-wettable option. | Choose for functional-safety-critical applications requiring built-in diagnostics - requires PCB redesign due to different package and pinout. |
Compared with MAX20096ATPA/V+, MAX16993ATJG/V+ offers superior EMI control via SSEN and flexible synchronization; versus TPS653221AQPWPRQ1, it provides smaller footprint, lower IQ, and automotive-optimized thermal performance - making it optimal for cost-sensitive, space-constrained ADAS and infotainment designs.
Availability
MAX16993ATJG/V+ is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and body control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX16993ATJG/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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management solutions for automotive, industrial, and communications markets.
The MAX16993 belongs to Maxim's automotive PMIC product line, engineered specifically for battery-direct, multi-rail power conversion in safety-critical vehicle subsystems - emphasizing AEC-Q100 qualification, low EMI, and robust transient immunity.
FAQ
What is the maximum input voltage rating for MAX16993ATJG/V+ and how does it handle automotive transients?
The MAX16993ATJG/V+ supports continuous input voltage up to 36V and is protected against load-dump transients up to 42V per its Absolute Maximum Ratings. This enables direct connection to the vehicle battery without external transient suppression in most 12V systems. The device incorporates internal clamping and robust gate-drive design to sustain these events without latch-up or parametric shift - confirmed in Maxim's AEC-Q100 stress testing protocol.
Does MAX16993ATJG/V+ support independent power sequencing for its three output channels?
Yes, MAX16993ATJG/V+ supports precise sequencing via dedicated enable inputs (EN1, EN2, EN3) and individual open-drain RESET_ outputs (RESET1, RESET2, RESET3). EN1 must be asserted first to start OUT1's 4ms soft-start; only then can EN2/EN3 be activated to initiate OUT2/OUT3's 2.5ms ramps. Each RESET_ asserts low until its output reaches regulation and holds for a programmable timeout - enabling controlled boot of microcontrollers and FPGAs.
Can MAX16993ATJG/V+ operate in forced-PWM mode across all load conditions?
Yes, MAX16993ATJG/V+ supports forced-PWM mode via the SYNC input: applying a logic-high signal (≥1.8V) to SYNC forces all three buck regulators into fixed-frequency PWM operation, eliminating light-load frequency variation and associated acoustic noise. This mode is essential for noise-sensitive applications like camera modules and audio subsystems - and is fully documented in the Electrical Characteristics table under SYNC Input High specification.
What is the purpose of the BIAS pin on MAX16993ATJG/V+ and how should it be decoupled?
The BIAS pin on MAX16993ATJG/V+ is a 5.0V ±0.4V internal linear regulator output used to power internal circuitry and Buck 1's low-side gate driver (PV1). It must be bypassed with a minimum 2.2µF low-ESR ceramic capacitor placed as close as possible to the pin. After OUT1 soft-start completes, BIAS is internally shorted to OUT1 - so its final voltage matches the configured OUT1 setting (e.g., 3.3V or 5.0V), reducing standby power.
Is MAX16993ATJG/V+ qualified to AEC-Q100, and which grade does it meet?
Yes, MAX16993ATJG/V+ is AEC-Q100 qualified to Grade 0, covering -40°C to +150°C junction temperature. This certification includes stress tests for temperature cycling, humidity bias, ESD (HBM ±2kV), and transients - validating its suitability for under-hood and safety-critical applications such as ADAS and powertrain control. The qualification status is explicitly stated in the "Benefits and Features" section of the official datasheet.
MAX16993ATJG/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-WFQFN 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 (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)
MAX16993ATJG/V+ FAQ
1.How can I place an order for MAX16993ATJG/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16993ATJG/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 MAX16993ATJG/V+ reliable?
The price and inventory of MAX16993ATJG/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16993ATJG/V+ is usually 5 days.
3.What payment methods are accepted for MAX16993ATJG/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16993ATJG/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16993ATJG/V+?
MAX16993ATJG/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16993ATJG/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 MAX16993ATJG/V+?
For technical support, including MAX16993ATJG/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16993ATJG/V+ requirements.
6.How does Aetrix verify that MAX16993ATJG/V+ is sourced from the original manufacturer or authorized distributors?
All MAX16993ATJG/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 MAX16993ATJG/V+ meets industry standards.
7.What is the process for return or replacement of MAX16993ATJG/V+?
All MAX16993ATJG/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16993ATJG/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 MAX16993ATJG/V+ part is unused and in its original packaging.
Return procedure for MAX16993ATJG/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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