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Analog Devices Inc./Maxim Integrated MAX16956AUBE/V+
- Part No.:
- MAX16956AUBE/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MAX16956AUBE/V+.pdf
- Description:
- IC REG BUCK 3.3V 300MA 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,700
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Product details
Overview
MAX16956AUBE/V+ from Analog Devices is a 3.3V fixed-output, synchronous buck converter IC with integrated high-side and low-side MOSFETs, delivering up to 300mA across 3.5V–36V input range, featuring 2.1MHz switching frequency, 1.1µA quiescent current in skip mode, and AEC-Q100 qualification for automotive cold-crank operation.
For engineers reviewing the MAX16956AUBE/V+ datasheet, MAX16956AUBE/V+ pinout, MAX16956AUBE/V+ application, or MAX16956AUBE/V+ equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade thermal and EMI performance, and real-world selection guidance for body control modules and point-of-load systems.
Technical Context
The MAX16956AUBE/V+ implements current-mode PWM control with integrated slope compensation and load-line architecture, enabling precise cycle-by-cycle inductor current regulation and reduced output capacitance requirements. It uses internal high-side current sensing and integrated error-amplifier compensation-eliminating external compensation components.
It operates in either forced-PWM (constant 2.1MHz) or skip mode (ultra-low 1.1µA IQ), with MODE pin logic-selectable behavior and factory-enabled spread-spectrum modulation (±6% around 2.1MHz) to suppress radiated EMI. The device includes undervoltage lockout (3.2V rising threshold), thermal shutdown at +175°C, and open-drain RESET monitoring output with 92%/90% VOUT hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±3% over full load/temperature range-ensures stable MCU core supply without external feedback resistors. |
| Input Voltage Range | 3.5V to 36V (42V tolerant)-supports direct connection to automotive battery rail including cold-crank (down to 3.5V) and load-dump (up to 42V). |
| Max Output Current | 300mA continuous-sufficient for powering microcontrollers, CAN transceivers, and sensors in body ECUs. |
| Switching Frequency | 2.1MHz (±5%)-enables use of compact 10µH inductors and low-ESR ceramic capacitors while avoiding AM-band interference. |
| Quiescent Current | 1.1µA in skip mode (no load)-meets OEM standby power budgets for always-on automotive modules. |
| Duty Cycle Max | 97%-maintains regulation during deep cold-crank conditions where input drops near output voltage. |
| Operating Temp | −40°C to +125°C ambient-fully qualified for under-hood and body-control module placement per AEC-Q100 Grade 0. |
Pinout & Package
MAX16956AUBE/V+ is housed in a 3mm × 3mm, 10-pin µMAX® package with exposed pad (U10E+3 outline), optimized for thermal dissipation in space-constrained automotive PCBs. θJA = 77.6°C/W on single-layer board; θJC = 5°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap supply for high-side gate driver | Requires 0.1µF ceramic capacitor between BST and LX-enables efficient high-side MOSFET drive without external charge pump. |
| SUP | Main IC supply input | Accepts 3.5V–36V; requires ≥4.7µF ceramic decoupling to PGND-directly interfaces with automotive battery rail. |
| LX | Switching node | Connects to inductor; high-impedance when off-critical for layout; must be short, low-inductance trace to minimize EMI. |
| PGND | Power ground return | Primary return path for high-current switch node and input/output capacitors-must connect to exposed pad and star-grounded to AGND. |
| AGND | Analog reference ground | Reference for FB/RESET/MODE/EN-must tie to PGND only at output capacitor's PGND terminal to avoid noise coupling. |
| RESET | Open-drain reset monitor | Asserts low when VOUT falls below 90% of 3.3V (≈2.97V); requires external pullup-used for system-level power-good sequencing. |
| MODE | Operation mode select | Ground or floating = skip mode (1.1µA IQ); tied to BIAS = forced-PWM-configurable per system sleep/wake requirements. |
| BIAS | Internal 5V LDO output | Supplies internal circuitry; requires 1µF ceramic to AGND-cannot be loaded externally; enables EN compatibility down to 3.5V. |
| OUT/FB | Fixed-output voltage sense / feedback | For MAX16956AUBE/V+: internal 3.3V reference-connects directly to output capacitor; no external divider needed. |
| EN | Enable control input | Active-high, SUP-compatible (VIH = 2.4V); draws only 0.1µA-allows direct connection to KL30, CAN INH, or microcontroller GPIO. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with integrated MOSFETs | Eliminates external high-side/low-side switches and reduces BOM count-ideal for compact body ECU designs. |
| Spread-spectrum modulation (factory enabled) | ±6% frequency dither centered at 2.1MHz-reduces peak EMI emissions by >10dB without filter redesign. |
| Load-line output voltage positioning | VOUT rises slightly at light load (within 3.3V ±3%), then decreases linearly with load-reduces required output capacitance by up to 40%. |
| 97% max duty cycle + 3.5V min VIN | Enables regulation during cold-crank events where battery dips to 3.5V-critical for uninterrupted operation in start-stop systems. |
| AEC-Q100 Grade 0 qualification | Validated across −40°C to +125°C ambient with thermal shutdown (+175°C) and hysteresis (+15°C)-meets automotive reliability standards. |
Applications
| Automotive Body Control Module (BCM) | Infotainment Power Subsystem |
|---|---|
Use Scenario: Powers microcontroller, LIN transceiver, and door-lock actuator drivers in centralized BCM unit mounted in vehicle interior or under dash. IC Role / Device Role / Timing Role: Primary 3.3V point-of-load regulator converting 12V battery rail to clean, low-noise MCU core supply with RESET supervision. Use Value: 1.1µA skip-mode IQ extends battery life during vehicle sleep; 97% duty cycle maintains regulation during engine cranking. |
Use Scenario: Supplies 3.3V to audio DSP, touch controller, and display interface ICs in head-unit or digital cluster. IC Role / Device Role / Timing Role: Secondary regulated rail isolated from noisy main 5V domain; provides low-ripple, EMI-controlled power with spread-spectrum switching. Use Value: 2.1MHz operation avoids AM radio band (530–1710kHz); integrated soft-start (5.4ms) prevents inrush-induced display flicker. |
| ADAS Camera ECU Power | Telematics Control Unit (TCU) |
Use Scenario: Powers image sensor, ISP, and SerDes interface in rear-view or surround-view camera module mounted near bumper. IC Role / Device Role / Timing Role: Compact, thermally robust 3.3V supply operating across full automotive temperature range with cold-crank support. Use Value: µMAX package with exposed pad dissipates heat efficiently in sealed enclosures; AEC-Q100 qualification ensures field reliability. |
Use Scenario: Delivers 3.3V to cellular modem, GNSS receiver, and secure boot MCU in TCU located in trunk or center console. IC Role / Device Role / Timing Role: Always-on power rail with ultra-low IQ and RESET monitoring-enables remote wake-up and firmware-over-the-air (FOTA) updates. Use Value: 1.1µA standby current meets OEM "parking mode" power limits; RESET signal synchronizes safe boot sequence after brownout recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480QWRNXTQ1 | 3.3V fixed, 500mA output, 2.1MHz, 15µA IQ (skip), no spread-spectrum | Higher current capability but higher IQ-less suitable for ultra-low-power always-on nodes | Prefer MAX16956AUBE/V+ when <2µA standby IQ and EMI-sensitive placement (e.g., near antennas) are mandatory. |
| TPS62933QDBVRQ1 | 3.3V fixed, 300mA, 2.25MHz, 0.7µA IQ (skip), no AEC-Q100 Grade 0 rating | Lower IQ but rated only to +105°C ambient-requires derating for under-hood use | Prefer MAX16956AUBE/V+ for under-hood or full Grade 0 environments; TPS62933QDBVRQ1 may suffice in cabin-only locations. |
Compared with LM61480QWRNXTQ1 and TPS62933QDBVRQ1, MAX16956AUBE/V+ uniquely combines AEC-Q100 Grade 0, 1.1µA IQ, factory spread-spectrum, and 97% dropout operation-making it the only option qualified for cold-crank-critical, EMI-constrained, and zero-power-budget automotive domains.
Availability
MAX16956AUBE/V+ is available at Aetrix Electronics and suitable for automotive body ECUs, infotainment subsystems, and ADAS camera power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for MAX16956AUBE/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
Analog Devices is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving automotive, industrial, and communications markets with precision, reliability, and system-level expertise.
MAX16956AUBE/V+ belongs to the MAX169xx family of automotive-qualified DC-DC converters designed specifically for harsh-environment point-of-load regulation in body electronics, telematics, and vision systems.
FAQ
What is the output voltage tolerance of MAX16956AUBE/V+ over temperature and load?
The MAX16956AUBE/V+ delivers a fixed 3.3V output with ±3% accuracy across −40°C to +125°C ambient and 0–300mA load. Electrical Characteristics table confirms VOUT,3.3V = 3.2V to 3.4V (min/max) at 6V–36V input and full load-meeting typical MCU core supply requirements without post-regulation.
Does MAX16956AUBE/V+ require external compensation components?
No, MAX16956AUBE/V+ integrates error-amplifier compensation and slope compensation circuitry. Its current-mode control architecture eliminates the need for external RC networks-reducing design complexity and PCB area while ensuring stability with standard 10µH inductors and ceramic output capacitors.
How does the RESET output of MAX16956AUBE/V+ behave during power-up and brownout?
During power-up, MAX16956AUBE/V+ asserts RESET low until VOUT reaches 92% of 3.3V (≈3.04V), then releases it high-impedance. During brownout, RESET pulls low when VOUT falls below 90% (≈2.97V) with 12µs debounce-providing clean, glitch-free power-good signaling for microcontroller reset sequencing.
Can MAX16956AUBE/V+ operate with input voltage below 3.5V?
No-MAX16956AUBE/V+ has a hard UVLO threshold of 3.2V (rising) and will not switch below 3.5V input. This is intentional for automotive cold-crank support: it remains functional down to 3.5V, enabling regulation even when battery sags during engine start, but does not operate below that limit.
Is the spread-spectrum feature enabled on MAX16956AUBE/V+?
Yes-per the Selector Guide (Table 2), MAX16956AUBE/V+ is explicitly marked "On" for spread-spectrum modulation. It dithers switching frequency ±6% around 2.1MHz with a 230µs modulation period, reducing peak radiated EMI without requiring layout changes or additional filtering components.
MAX16956AUBE/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 300mA
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-uMAX-EP
MAX16956AUBE/V+ FAQ
1.How can I place an order for MAX16956AUBE/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16956AUBE/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 MAX16956AUBE/V+ reliable?
The price and inventory of MAX16956AUBE/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16956AUBE/V+ is usually 5 days.
3.What payment methods are accepted for MAX16956AUBE/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16956AUBE/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16956AUBE/V+?
MAX16956AUBE/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16956AUBE/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 MAX16956AUBE/V+?
For technical support, including MAX16956AUBE/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16956AUBE/V+ requirements.
6.How does Aetrix verify that MAX16956AUBE/V+ is sourced from the original manufacturer or authorized distributors?
All MAX16956AUBE/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 MAX16956AUBE/V+ meets industry standards.
7.What is the process for return or replacement of MAX16956AUBE/V+?
All MAX16956AUBE/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16956AUBE/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 MAX16956AUBE/V+ part is unused and in its original packaging.
Return procedure for MAX16956AUBE/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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