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Analog Devices Inc./Maxim Integrated MAX20040DATPA/VY+
- Part No.:
- MAX20040DATPA/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
MAX20040DATPA/VY+.pdf
- Description:
- IC REG BUCK BST PROG 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,121
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Product details
Overview
MAX20040DATPA/VY+ from Analog Devices is an automotive-grade synchronous buck-boost DC-DC converter with integrated H-bridge MOSFETs, delivering up to 1.2A output current across a 2V–36V input range while consuming only 52μA quiescent current in standby mode. It features ±2% output voltage accuracy, 2.2MHz programmable switching frequency, and AEC-Q100 qualification for infotainment and body electronics power rails.
For engineers reviewing the MAX20040DATPA/VY+ datasheet, MAX20040DATPA/VY+ pinout, MAX20040DATPA/VY+ application, or MAX20040DATPA/VY+ equivalent, key selection criteria include cold-crank operation down to 2V post-startup, 40V load-dump tolerance, spread-spectrum EMI reduction, and compatibility with 4.0V–15V adjustable or fixed 5V output configurations.
Technical Context
The MAX20040DATPA/VY+ implements a current-mode controlled buck-boost topology with integrated high-side and low-side DMOS FETs arranged in an H-bridge configuration, enabling seamless transition between buck and boost modes without external control logic. Its internal 4.6V LDO (VCC) powers control circuitry and supports operation down to 2V input after startup completion.
It supports dual light-load operation modes via FSYNC: skip mode (for ultra-low IQ) and forced-PWM (for EMI predictability), with cycle-by-cycle current limiting, thermal shutdown at 166°C, and overvoltage protection triggered at 108% of regulation. The device uses external resistor programming (FSW pin) for 200kHz–2.2MHz frequency setting and accepts external clock synchronization within ±10% tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.2A max - sufficient for powering automotive infotainment SoCs or ADAS camera modules |
| Input Voltage Range | 2V to 36V (post-startup) - supports cold-crank (≤3.5V) and load-dump (≤40V transient tolerant) |
| Switching Frequency | 2.2MHz (RFSW = 12kΩ) - enables use of sub-1μH inductors and compact 0603/0805 ceramic capacitors |
| Quiescent Current | 52μA in standby - meets OEM requirements for always-on vehicle subsystems |
| Output Voltage Accuracy | ±2% - ensures stable 5V or adjustable 4.0V–15V rail for sensitive analog/digital loads |
| Operating Temperature | −40°C to +125°C - qualified for under-hood and dashboard-mounted automotive applications |
| AEC-Q100 Grade | Grade -40°C to +125°C - certified for automotive safety-critical power domains |
Pinout & Package
MAX20040DATPA/VY+ is housed in a 4mm × 4mm, 20-pin side-wettable TQFN (SWTQFN) package with exposed thermal pad (EP), optimized for automated optical inspection (AOI) and high-reliability automotive PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Main power input | Accepts 2V–36V; powers internal bias and H-bridge FETs; requires ≥4.7μF ceramic bypass to PGND |
| EN | High-voltage enable input | Logic-compatible from 3.3V to 40V; enables/disables regulator with hysteresis |
| LX1 / LX2 | H-bridge switching nodes | LX1 connects to IN–PGND path; LX2 connects to OUT–PGND path; both require low-inductance layout |
| BST1 / BST2 | Bootstrap supplies | Each drives high-side gate of respective H-bridge leg; requires 100nF ceramic capacitor to LX1/LX2 |
| FB | Voltage feedback input | Sets output: tie to VCC for 5V fixed; use resistive divider for 4.0V–15V adjustment (VFB = 1.25V) |
| PGOOD | Open-drain power-good flag | Asserts when VOUT ≥96% of regulation; deasserts at ≤93%; requires 10kΩ pull-up to BIAS |
| FSW | Frequency set resistor node | Connect RFSW to AGND to program fSW from 200kHz to 2.2MHz (e.g., 12kΩ = 2.2MHz) |
| FSYNC | Mode/sync control input | AGND = skip mode; VCC = forced PWM; external clock accepted within −10% of fSW |
| SPS | Spread-spectrum enable | Pull high to modulate fSW ±3% (triangular, 110μs period at 2.2MHz); disabled during external sync |
| COMP | Loop compensation node | External Type II network (RC, CC, CF) sets bandwidth and phase margin for stability |
Key Features
| Feature | Design Value |
|---|---|
| Integrated H-bridge architecture | Eliminates need for four discrete MOSFETs and associated gate drivers, reducing BOM count and board area by >40% |
| 40V load-dump tolerance | Withstands ISO 7637-2 Pulse 5a transients without external TVS, simplifying front-end protection design | Side-wettable TQFN package | Enables reliable solder-joint inspection via AOI in automotive manufacturing, improving field reliability |
| Programmable spread spectrum | Reduces peak EMI emissions by >10dB at fundamental switching frequency without filter redesign |
| 2.2MHz max switching frequency | Permits use of 0.47μH inductors and 22μF X7R ceramics, cutting solution size to <120mm² total footprint |
Applications
| Infotainment Systems | Body Electronics |
|---|---|
Use Scenario: Powering display controllers and audio DSPs in head units with wide battery voltage swing (6V–16V) and stop-start cycling. IC Role / Device Role / Timing Role: Primary buck-boost PoL regulator delivering regulated 5V/12V from vehicle battery with seamless buck-to-boost transition. Use Value: Maintains uninterrupted operation during cranking (≤6V) and load dump (≤40V), eliminating brownouts and resets. | Use Scenario: Supplying door module ECUs requiring stable 5V rail despite battery voltage fluctuations during window motor actuation. IC Role / Device Role / Timing Role: Compact, high-efficiency point-of-load converter replacing discrete buck-boost solutions in space-constrained modules. Use Value: 52μA standby current extends battery life in sleep mode; AEC-Q100 qualification ensures 15-year field reliability. |
| Start-Stop Systems | Power over Coax (PoC) |
Use Scenario: Providing continuous 5V supply to CAN transceivers and sensor interfaces during engine restart when battery dips to 2.5V. IC Role / Device Role / Timing Role: Cold-crank capable buck-boost regulator maintaining regulated output during 2V–36V input transients. Use Value: Operates continuously below 4.5V (unlike standard buck converters), preventing communication loss during restart. | Use Scenario: Generating clean 12V rail from coaxial cable feed in automotive camera systems with bidirectional data/power. IC Role / Device Role / Timing Role: High-frequency (2.2MHz), low-noise buck-boost stage isolating power delivery from high-speed video signals. Use Value: Spread-spectrum modulation suppresses switching noise coupling into analog video path, preserving SNR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20040BATPA/VY+ | Same package and pinout; differs only in output voltage option (5V fixed vs. adjustable 4–15V) | Fixed 5V output; no external FB divider required | Select when system requires only 5V rail and minimal external components |
| LM61480-Q1 | Single-switch buck-boost (not H-bridge); 3.3V–36V input; 3.5A output; no integrated spread spectrum | Requires external flyback diode and higher-output-current capability | Choose for higher current needs (>1.2A) where H-bridge integration is not mandatory |
Compared with MAX20040BATPA/VY+, the MAX20040DATPA/VY+ offers wider output adjustability (4–15V) at identical 1.2A rating and package, while the LM61480-Q1 provides higher current but lacks integrated H-bridge and spread-spectrum EMI control-making MAX20040DATPA/VY+ optimal for compact, low-EMI automotive PoL designs.
Availability
MAX20040DATPA/VY+ is available at Aetrix Electronics and suitable for infotainment systems, body electronics, and start-stop systems requiring stable component supply with automotive-grade reliability and long-term lifecycle support.
Supply support for MAX20040DATPA/VY+ 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 semiconductors, serving automotive, industrial, communications, and healthcare markets.
The MAX20040DATPA/VY+ belongs to Analog Devices' automotive power management portfolio, designed specifically for robust, low-quiescent-current DC-DC conversion in harsh vehicle environments with stringent EMI and reliability requirements.
FAQ
What is the minimum input voltage required for MAX20040DATPA/VY+ to start up?
The MAX20040DATPA/VY+ requires IN ≥3.5V and VCC UVLO release (≥3.5V) to initiate startup. Once operational, it sustains regulation down to 2V input-enabling cold-crank functionality. Startup behavior is verified per datasheet Section "Recommended Operating Conditions" and confirmed in typical operating characteristics plots.
Does MAX20040DATPA/VY+ support external frequency synchronization?
Yes, MAX20040DATPA/VY+ supports external clock synchronization via the FSYNC pin. The applied clock must be within −10% of the nominal fSW set by RFSW; synchronization locks within two cycles. When external clock is absent, the device reverts to internal oscillator operation.
What is the purpose of the SPS pin on MAX20040DATPA/VY+?
The SPS pin on MAX20040DATPA/VY+ enables or disables spread-spectrum frequency modulation. When pulled high, it modulates fSW ±3% with a triangular waveform (110μs period at 2.2MHz), reducing peak radiated EMI without altering filter design. SPS is automatically disabled during external clock sync.
Can MAX20040DATPA/VY+ operate with a 5V fixed output without external resistors?
Yes, MAX20040DATPA/VY+ can deliver a precise 5V fixed output by connecting the FB pin directly to VCC-activating the internal 1.25V reference and preset divider. No external resistors are needed, simplifying design for single-rail applications.
What thermal protection features does MAX20040DATPA/VY+ include?
MAX20040DATPA/VY+ incorporates thermal shutdown at 166°C (typical) with 18°C hysteresis. When junction temperature exceeds threshold, the internal bias regulator and switching circuitry disable until temperature falls below 148°C, then automatic recovery occurs-ensuring safe operation under overload or poor heatsinking conditions.
MAX20040DATPA/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Programmable (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- 15V
- Current - Output:
- 1.2A
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 20-TQFN-EP (4x4)
MAX20040DATPA/VY+ FAQ
1.How can I place an order for MAX20040DATPA/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20040DATPA/VY+ 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 MAX20040DATPA/VY+ reliable?
The price and inventory of MAX20040DATPA/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20040DATPA/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20040DATPA/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20040DATPA/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20040DATPA/VY+?
MAX20040DATPA/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20040DATPA/VY+ 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 MAX20040DATPA/VY+?
For technical support, including MAX20040DATPA/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20040DATPA/VY+ requirements.
6.How does Aetrix verify that MAX20040DATPA/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20040DATPA/VY+ 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 MAX20040DATPA/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20040DATPA/VY+?
All MAX20040DATPA/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20040DATPA/VY+, 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 MAX20040DATPA/VY+ part is unused and in its original packaging.
Return procedure for MAX20040DATPA/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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