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Analog Devices Inc./Maxim Integrated MAX16993ATJH/V+
- Part No.:
- MAX16993ATJH/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
MAX16993ATJH/V+.pdf
- Description:
- IC REG BUCK ADJ 3A TRPL 32TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,833
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Product details
Overview
MAX16993ATJH/V+ 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 up to 2.1MHz. It accepts 3.5V–36V input, delivers ≤5.0V/≤3.95V outputs with ±2.5% accuracy, consumes only 30µA quiescent current, and supports load-dump protection up to 42V - enabling compact, efficient power rails for ADAS camera modules and infotainment head units.
For engineers reviewing the MAX16993ATJH/V+ datasheet, MAX16993ATJH/V+ pinout, MAX16993ATJH/V+ application, or MAX16993ATJH/V+ equivalent, key selection criteria include its 32-pin side-wettable QFND-EP package, individual enable/reset per channel, spread-spectrum & SYNC capability, and cascaded OUT2/OUT3 architecture improving system efficiency in battery-supplied automotive subsystems.
Technical Context
The MAX16993ATJH/V+ implements a current-mode control architecture with forced-PWM and skip modes across all three channels. Its OUT1 controller uses external high-side/low-side MOSFETs and supports programmable switching frequencies (2.1MHz or factory-set 350kHz–1.05MHz via CSEL1), while OUT2/OUT3 integrate 3A FETs and operate exclusively at 2.1MHz from OUT1's output.
Each channel features independent voltage monitoring via dedicated open-drain RESET_ outputs with programmable timeout (0.1ms–7.8ms), overtemperature shutdown (+170°C), short-circuit protection, and 180° out-of-phase operation between OUT2/OUT3 to reduce input ripple. The BIAS LDO transitions from 5V to OUT1 voltage post-soft-start to minimize standby loss.
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 (CSEL1 = GND); factory options: 350/420/525/1050kHz - avoids AM band interference and reduces inductor size. |
| Quiescent Current | 30µA with OUT1 enabled - meets automotive "always-on" low-power requirements for telematics and body control modules. |
| Output Accuracy | ±2.5% for OUT1 (PWM mode), ±3.0% for OUT2/OUT3 - ensures stable microcontroller core voltage under full line/load/temperature variation. |
| Thermal Rating | AEC-Q100 Grade 0 (−40°C to +125°C junction); thermal shutdown at +170°C - certified for under-hood deployment. |
| Package | 32-pin side-wettable QFND-EP (5mm × 5mm × 0.8mm); θJA = 37°C/W - supports automated optical inspection (AOI) and high-reliability solder joint formation. |
| Protection Features | Overcurrent limiting (100–150mV CS threshold), overtemperature shutdown, UVLO (2.7V PV threshold), and output OVP - eliminates need for external fault management circuitry. |
Pinout & Package
MAX16993ATJH/V+ is housed in a 32-pin side-wettable QFND-EP package (5mm × 5mm × 0.8mm) with exposed pad tied to GND for thermal dissipation. Pin functions are validated per Maxim's official datasheet Rev 14 (12/16).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP | Main HV input supply | Accepts 3.5V–36V battery rail; requires local 0.1µF ceramic bypass - primary path for transient energy absorption. |
| EN1, EN2, EN3 | Independent enable inputs | Active-high digital controls; EN1 gating enables all regulators - enables staged power-up sequencing for SoC subsystems. |
| RESET1/2/3 | Open-drain reset outputs | Assert low when output drops >6%; timeout programmable (0.1–7.8ms) - provides clean power-good signaling to MCU reset logic. |
| SYNC | Frequency synchronization I/O | Configurable as input (1.7–2.4MHz external clock) or output - eliminates beat frequencies in multi-rail systems. |
| SSEN | Spread-spectrum enable | Connect to BIAS to modulate fSW by ±3% at 4kHz - reduces peak EMI by >10dB without changing layout. |
| LX1/LX2/LX3 | Switching node terminals | High dv/dt nodes requiring tight loop area; LX1 drives DH1 gate; LX2/LX3 drive integrated FETs - critical for EMI and efficiency. |
Key Features
| Feature | Design Value |
|---|---|
| Cascaded architecture | OUT2/OUT3 powered from OUT1 output - improves overall system efficiency by ~5% vs. independent buck supplies. |
| Individual soft-start | 4ms for OUT1; 2.5ms for OUT2/OUT3 - prevents inrush current overload during cold-cranking conditions. |
| Factory-trimmed outputs | Fixed 3.3V/5.0V/3.15V/1.8V options available - eliminates need for precision feedback resistors and calibration. |
| Side-wettable QFND | Exposed pad + solderable side walls - enables AOI-compatible reflow and >95% solder joint voiding detection for automotive traceability. |
| BIAS LDO auto-transition | Switches from internal 5V to OUT1 voltage post-soft-start - reduces no-load power by 200µA in sustained low-power states. |
Applications
| ADAS Camera Module | Infotainment Head Unit |
|---|---|
Use Scenario: Powering image sensor, ISP, and interface logic in rear-view or surround-view cameras exposed to engine bay temperatures. IC Role / Device Role / Timing Role: Single-chip triple-output PMIC delivering 5.0V (sensor bias), 3.15V (ISP core), and 1.8V (MIPI PHY) with synchronized startup. Use Value: Eliminates discrete DC-DC + LDO combinations; 2.1MHz operation avoids AM band noise that corrupts analog video signals. |
Use Scenario: Supplying processor SoC, display driver, and audio codec in dashboard-mounted infotainment systems. IC Role / Device Role / Timing Role: Provides sequenced 3.3V (SoC I/O), 1.2V (core), and 5.0V (USB/Display) rails with independent reset assertion. Use Value: Individual RESET_ outputs enable precise power-good timing for boot ROM initialization; spread-spectrum reduces conducted EMI on shared PCB ground planes. |
| Telematics Control Unit (TCU) | Body Control Module (BCM) |
Use Scenario: Supporting LTE modem, GNSS receiver, and CAN transceiver in always-connected vehicle-to-cloud gateways. IC Role / Device Role / Timing Role: Delivers 3.3V (modem RF), 1.8V (GNSS baseband), and 5.0V (CAN FD transceiver) with ultra-low 30µA quiescent current. Use Value: Meets ISO 16750-2 "parked vehicle" leakage budget (<50µA); SYNC input allows synchronization with cellular baseband clock to suppress intermodulation. |
Use Scenario: Powering door module MCUs, LIN transceivers, and LED drivers in distributed body electronics. IC Role / Device Role / Timing Role: Generates 5.0V (LIN bus), 3.3V (MCU), and 1.2V (LED dimming PWM generator) with independent enable control per sub-system. Use Value: Cascaded OUT2/OUT3 reduces component count vs. dual-buck solutions; side-wettable package ensures solder joint reliability in high-vibration environments. |
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+ | 3-channel buck with integrated FETs (OUT1: 3.5A, OUT2/OUT3: 2A); fixed 2.1MHz; no CSEL1 frequency option; higher IQ (45µA) | Targeted at lower-current clusters and instrument panels; lacks spread-spectrum modulation | Select when integrated FETs simplify layout and 2A per low-voltage rail suffices; avoid if load-dump immunity >42V or SSEN EMI reduction is required. |
| TPS653221AQPWPRQ1 | Triple buck (2.5A/1.5A/1.5A); 2.2MHz; AEC-Q100; includes watchdog and window comparator; no cascaded architecture | Designed for functional-safety ASIL-B systems; adds diagnostic features but increases BOM cost | Select when ISO 26262 compliance and built-in safety monitors are mandatory; avoid if cost-sensitive or cascaded efficiency gain is prioritized. |
Compared with MAX20096ATPA/V+ and TPS653221AQPWPRQ1, the MAX16993ATJH/V+ uniquely combines pin-selectable frequency, cascaded topology for efficiency, and side-wettable packaging - making it optimal for space-constrained, EMI-sensitive ADAS and infotainment power designs where layout simplicity and thermal reliability are critical.
Availability
MAX16993ATJH/V+ is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment head units, and telematics control units requiring stable component supply across extended temperature and lifecycle demands.
Supply support for MAX16993ATJH/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 ICs for automotive, industrial, and communications markets.
The MAX16993ATJH/V+ belongs to Maxim's automotive-grade PMIC product line, engineered specifically for compact, high-efficiency power conversion in safety-critical vehicle subsystems operating from 12V/24V battery rails.
FAQ
What is the maximum input voltage rating for MAX16993ATJH/V+ and how does it handle automotive transients?
The MAX16993ATJH/V+ supports continuous input voltage up to 36V and is protected against load-dump transients up to 42V per its Absolute Maximum Ratings. This is achieved through robust internal clamp structures and process design - allowing direct connection to the vehicle battery without external TVS diodes in most Class D (ISO 7637-2) test conditions. The VSUP pin withstands −0.3V to +45V stress, confirming its suitability for harsh automotive environments.
Does MAX16993ATJH/V+ support adjustable output voltages, and what is the feedback reference voltage?
Yes, MAX16993ATJH/V+ supports resistor-divider adjustable outputs. For OUT1, FB1 regulates to 1.0V (typ) in adjustable mode, enabling output voltages from 3.0V to 5.5V. For OUT2/OUT3, the feedback reference is 0.815V (typ), supporting 0.8V to 3.95V outputs. These values are confirmed in the Electrical Characteristics table (page 2–3 of datasheet Rev 14) and apply directly to the MAX16993ATJH/V+ variant.
How does the cascaded architecture of MAX16993ATJH/V+ improve system efficiency compared to independent converters?
The MAX16993ATJH/V+ cascades OUT2 and OUT3 from OUT1's output, eliminating separate input filtering and reducing total conduction losses. At 2A load, this architecture improves overall efficiency by ~4–6% versus three independent bucks - verified in Typical Operating Characteristics plots (toc01/toc08/toc13). The benefit is most pronounced in 12V-input systems powering multiple low-voltage rails, such as infotainment SoCs.
What are the exact soft-start durations for each output channel of MAX16993ATJH/V+?
The MAX16993ATJH/V+ features fixed soft-start times: 4ms for OUT1 and 2.5ms for both OUT2 and OUT3. These values are specified in the Detailed Description section (page 13) and confirmed in the Typical Operating Characteristics plot "STARTUP SEQUENCE (VEN2 = VEN3 = VOUT1)" (toc18). They are not user-adjustable and ensure controlled inrush current during cold-cranking.
Is MAX16993ATJH/V+ pin-compatible with other members of the MAX1699x family, such as MAX16992 or MAX16994?
No, MAX16993ATJH/V+ is not pin-compatible with MAX16992 or MAX16994. While sharing the same 32-pin QFND-EP footprint, pin functions differ significantly - e.g., MAX16992 lacks OUT3 and has different RESET assignment, while MAX16994 integrates different FET configurations. The Pin Configuration diagram (page 9) confirms unique signal mapping for MAX16993ATJH/V+, and substitution requires PCB redesign.
MAX16993ATJH/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tube
- 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 (3.3V, 5.2V)
- 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)
MAX16993ATJH/V+ FAQ
1.How can I place an order for MAX16993ATJH/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16993ATJH/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 MAX16993ATJH/V+ reliable?
The price and inventory of MAX16993ATJH/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16993ATJH/V+ is usually 5 days.
3.What payment methods are accepted for MAX16993ATJH/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16993ATJH/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16993ATJH/V+?
MAX16993ATJH/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16993ATJH/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 MAX16993ATJH/V+?
For technical support, including MAX16993ATJH/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16993ATJH/V+ requirements.
6.How does Aetrix verify that MAX16993ATJH/V+ is sourced from the original manufacturer or authorized distributors?
All MAX16993ATJH/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 MAX16993ATJH/V+ meets industry standards.
7.What is the process for return or replacement of MAX16993ATJH/V+?
All MAX16993ATJH/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16993ATJH/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 MAX16993ATJH/V+ part is unused and in its original packaging.
Return procedure for MAX16993ATJH/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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