My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX16956AUBD/V+
- Part No.:
- MAX16956AUBD/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MAX16956AUBD/V+.pdf
- Description:
- IC REG BUCK 5V 300MA 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:189
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX16956AUBD/V+ from Analog Devices is a 36V, 300mA synchronous buck converter with integrated high-side and low-side MOSFETs, fixed 5V output, spread-spectrum EMI reduction, 2.1MHz switching frequency, and 1.1µA quiescent current in skip mode-designed for automotive body ECUs under cold-crank conditions.
For engineers reviewing the MAX16956AUBD/V+ datasheet, MAX16956AUBD/V+ pinout, MAX16956AUBD/V+ application, or MAX16956AUBD/V+ equivalent, key selection considerations include AEC-Q100 qualification, -40°C to +125°C operation, 97% max duty cycle, RESET monitoring capability, and µMAX-EP (10-pin) package compatibility with space-constrained automotive power rails.
Technical Context
The MAX16956AUBD/V+ implements current-mode PWM control with integrated slope compensation and load-line architecture to reduce required output capacitance while maintaining tight regulation across load steps. It uses internal high-side current sensing and integrated error-amplifier compensation-eliminating external compensation components.
It supports dual operating modes: forced-PWM (constant 2.1MHz) for predictable noise filtering and skip mode (1.1µA IQ) for ultra-low-power standby. The spread-spectrum option-factory-enabled on this variant-modulates fSW ±6% at 230µs period to suppress radiated EMI peaks without altering average frequency or control loop behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V (42V tolerant)-supports full automotive battery range including cold-crank (down to ~3.5V) and load-dump transients (up to 42V). |
| Output Voltage | Fixed 5.0V ±2% (4.9V–5.2V)-guaranteed over 6V–36V input and 0–300mA load, enabling direct replacement of legacy 5V LDOs in ECU subsystems. |
| Switching Frequency | 2.1MHz (±6% spread-spectrum enabled)-enables use of compact 10µH inductors and ceramic capacitors while avoiding AM-band interference. |
| Quiescent Current | 1.1µA in skip mode (fixed-output version)-meets OEM requirements for always-on modules with <10µA system standby budgets. |
| Max Duty Cycle | 97%-allows regulation down to VIN ≈ 5.15V at VOUT = 5V, critical for cold-crank operation where battery dips below 6V. |
| RESET Threshold | 92% VOUT rising / 90% VOUT falling-provides precise power-good signaling for microcontroller reset sequencing in automotive ECUs. |
| Thermal Protection | 175°C shutdown with 15°C hysteresis-ensures robust operation during sustained high-temperature under-hood conditions. |
Pinout & Package
The MAX16956AUBD/V+ is housed in a 3mm × 3mm, 10-pin µMAX® package with exposed pad (U10E+3), optimized for thermal dissipation in automotive environments. θJA = 77.6°C/W (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 100% duty-cycle operation near dropout. |
| SUP | Main IC supply input (3.5V–42V) | Accepts direct connection to automotive battery rail; requires ≥4.7µF ceramic decoupling to PGND. |
| LX | Switching node (high-side drain / low-side source) | Connects to inductor; high-impedance when off; drives external LC filter with minimal layout parasitics. |
| PGND | Power ground return path | Must be star-connected to AGND under device; carries high di/dt currents-separate from analog ground routing. |
| AGND | Analog reference ground | Reference for FB/RESET/MODE; connected to PGND only at single point (output capacitor return) to avoid noise coupling. |
| RESET | Open-drain power-good monitor | Active-low signal asserting when VOUT drops below 90% nominal; requires external pullup for MCU reset assertion. |
| MODE | Operating mode select | Ground or open = skip mode (1.1µA IQ); connect to BIAS = forced-PWM (constant 2.1MHz); internal 1MΩ pulldown. |
| BIAS | Internal 5V logic regulator output | Supplies internal circuitry; requires 1µF ceramic cap to AGND; not intended for external loading. |
| OUT/FB | Fixed-output voltage sense / adjustable feedback | For MAX16956AUBD/V+: dedicated 5V output sense node-bypassed to PGND with ≥22µF X7R ceramic capacitor. |
| EN | Enable control input | Logic-compatible with 3.5V–36V inputs (e.g., KL30, CAN INH); <0.4V disables, >2.4V enables; 0.1µA input leakage. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high- and low-side MOSFETs | RDS(ON) = 2.2Ω (HS) / 1.2Ω (LS) at VBIAS = 5V-eliminates external switch selection and gate-drive design effort. |
| Spread-spectrum modulation (enabled) | ±6% frequency dither centered at 2.1MHz-reduces peak EMI emissions by up to 10dB without affecting regulation or efficiency. |
| Load-line output positioning | Voltage rises slightly at light load (+0.5% typical), drops linearly with load-reduces required output capacitance by ~30% vs. flat-regulation designs. |
| Internal soft-start | 5.4ms fixed ramp time-prevents inrush current and ensures controlled startup into large capacitive loads (e.g., MCU + peripherals). |
| AEC-Q100 qualified | Grade 1 (-40°C to +125°C junction), stress-tested per automotive reliability standards-validates suitability for body control modules. |
Applications
| Automotive Body Control Module (BCM) | ADAS Camera Power Rail |
|---|---|
|
Use Scenario: Powering microcontroller, CAN transceiver, and sensor interface in door module or lighting ECU under cold-crank (VIN = 4.2V) and load-dump (VIN = 42V) conditions. IC Role / Device Role / Timing Role: Primary 5V point-of-load regulator delivering stable 300mA with RESET signaling for safe MCU boot and brownout recovery. Use Value: 97% duty cycle maintains regulation during cold-crank; 1.1µA skip-mode IQ extends battery life in parked mode; AEC-Q100 ensures field reliability. |
Use Scenario: Generating clean 5V supply for image sensor and ISP in rear-view or surround-view camera systems mounted near engine bay. IC Role / Device Role / Timing Role: Compact DC-DC converter with low EMI profile, providing regulated 5V with fast transient response to handle burst-mode sensor readouts. Use Value: 2.1MHz switching + spread-spectrum minimizes interference with video signals; µMAX package fits tight PCB real estate; -40°C to +125°C operation survives under-hood thermal cycling. |
| Distributed Telematics Power Node | Infotainment System Sub-Regulator |
|
Use Scenario: Local 5V supply for LTE modem, GNSS receiver, and secure element in telematics control unit with always-on wake-up capability. IC Role / Device Role / Timing Role: Low-quiescent buck converter enabling <10µA system standby current while supporting rapid wake-from-sleep via EN pin. Use Value: 1.1µA IQ meets OEM sleep-current targets; RESET output synchronizes secure boot sequence; 42V tolerance handles jump-start transients. |
Use Scenario: Secondary 5V rail powering audio codec, touch controller, and display interface in head-unit, isolated from main 12V domain. IC Role / Device Role / Timing Role: High-efficiency, low-noise buck regulator supplying noise-sensitive analog circuits with precise voltage accuracy (±2%). Use Value: Fixed 5V output eliminates external resistor divider; current-mode control delivers <50µs load-step response; BIAS pin powers internal logic without external LDO. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480QWRNXTQ1 | 42V input, 3.5A output, 2.1MHz, no spread-spectrum, 15µA IQ in FPWM | Higher current capacity; lacks integrated spread-spectrum-requires external EMI filters for automotive compliance | Select when >300mA load or higher fault-current margin is needed; verify layout-level EMI mitigation if replacing MAX16956AUBD/V+. |
| TPS62933-Q1 | 36V input, 350mA output, 2.2MHz, 1.5µA IQ in DCM, no RESET output | No power-good signaling; lower IQ than MAX16956AUBD/V+ in DCM but lacks cold-crank-optimized 97% duty cycle | Choose for cost-sensitive infotainment sub-rails where RESET is handled externally; confirm cold-crank performance with VIN min = 4.5V. |
Compared with LM61480QWRNXTQ1 and TPS62933-Q1, the MAX16956AUBD/V+ uniquely combines AEC-Q100 Grade 1 qualification, factory-enabled spread-spectrum, 1.1µA skip-mode IQ, and 97% duty cycle in a 3mm × 3mm package-making it optimal for space- and EMI-constrained 300mA automotive body electronics.
Availability
MAX16956AUBD/V+ is available at Aetrix Electronics and suitable for automotive body ECUs, ADAS camera power nodes, distributed telematics modules, and infotainment sub-regulators requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX16956AUBD/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 digital signal processing technologies, serving automotive, industrial, communications, and healthcare markets with precision power, sensing, and connectivity solutions.
The MAX16956 series belongs to Analog Devices' automotive-grade power management portfolio, designed specifically for robust, low-EMI, wide-input DC-DC conversion in body electronics and ADAS subsystems operating from cold-crank to load-dump conditions.
FAQ
What is the function of the MODE pin on the MAX16956AUBD/V+?
The MODE pin on the MAX16956AUBD/V+ selects between forced-PWM and skip operating modes. When tied to BIAS, it enables constant 2.1MHz switching for predictable EMI filtering; when grounded or left floating (with internal 1MΩ pulldown), it activates skip mode-reducing quiescent current to 1.1µA for ultra-low-power standby. This dual-mode flexibility allows designers to optimize efficiency across full load range without changing hardware.
Does the MAX16956AUBD/V+ require external compensation components?
No, the MAX16956AUBD/V+ does not require external compensation components. It features an integrated transconductance error amplifier and internal slope compensation within its current-mode PWM architecture. This eliminates the need for external RC networks typically used in voltage-mode controllers, simplifying design, reducing bill-of-materials count, and improving layout robustness-especially critical in automotive applications where reliability and space constraints are paramount.
How does the RESET output of the MAX16956AUBD/V+ behave during power-up and brownout?
The RESET output of the MAX16956AUBD/V+ is an open-drain signal that goes high-impedance (logic high with external pullup) when VOUT rises above 92% of nominal (4.6V for 5V output), and pulls low when VOUT falls below 90% (4.5V). Its 12µs debounce prevents false triggering during transient dips. This provides precise, glitch-free reset signaling for microcontrollers-ensuring safe initialization after cold-crank startup or recovery from brownout events.
Is the MAX16956AUBD/V+ pin-compatible with other variants in the MAX16956 family?
Yes, the MAX16956AUBD/V+ is pin-compatible with all 10-pin µMAX variants in the MAX16956 family-including MAX16956AUBA/V+, MAX16956AUBB/V+, and MAX16956AUBC/V+. All share identical pinout, footprint (U10E+3), and thermal pad configuration. The only functional differences are output voltage (5V fixed), spread-spectrum enable status (on for AUBD/V+), and top-mark code (+AABK)-allowing drop-in replacement in existing layouts when EMI or output voltage requirements change.
What is the maximum continuous output current supported by the MAX16956AUBD/V+?
The MAX16956AUBD/V+ supports up to 300mA of continuous output current at 5V, verified across the full automotive temperature range (-40°C to +125°C) and input voltage range (3.5V to 36V). This rating assumes proper thermal management-specifically, soldering the exposed pad to a large copper ground plane-and use of recommended external components (e.g., 10µH inductor, 22µF X7R output capacitor). Derating applies above +70°C ambient per θJA = 77.6°C/W.
MAX16956AUBD/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):
- 5V
- 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
MAX16956AUBD/V+ FAQ
1.How can I place an order for MAX16956AUBD/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16956AUBD/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 MAX16956AUBD/V+ reliable?
The price and inventory of MAX16956AUBD/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16956AUBD/V+ is usually 5 days.
3.What payment methods are accepted for MAX16956AUBD/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16956AUBD/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16956AUBD/V+?
MAX16956AUBD/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16956AUBD/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 MAX16956AUBD/V+?
For technical support, including MAX16956AUBD/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16956AUBD/V+ requirements.
6.How does Aetrix verify that MAX16956AUBD/V+ is sourced from the original manufacturer or authorized distributors?
All MAX16956AUBD/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 MAX16956AUBD/V+ meets industry standards.
7.What is the process for return or replacement of MAX16956AUBD/V+?
All MAX16956AUBD/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16956AUBD/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 MAX16956AUBD/V+ part is unused and in its original packaging.
Return procedure for MAX16956AUBD/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX16956AUBD/V+ Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
