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Analog Devices Inc./Maxim Integrated MAX20040BATPA/VY+
- Part No.:
- MAX20040BATPA/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
MAX20040BATPA/VY+.pdf
- Description:
- IC REG BUCK BST PROG 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,673
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Product details
Overview
MAX20040BATPA/VY+ from Analog Devices is an automotive-grade synchronous buck-boost DC-DC converter with integrated H-bridge, 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 operates over –40°C to +125°C for infotainment power rails and start-stop systems.
For engineers reviewing the MAX20040BATPA/VY+ datasheet, MAX20040BATPA/VY+ pinout, MAX20040BATPA/VY+ application, or MAX20040BATPA/VY+ equivalent, key selection considerations include its 20-pin SWTQFN package, 5V fixed/4V–15V adjustable output, spread-spectrum EMI reduction, PGOOD monitoring, and AEC-Q100 qualification for automotive body electronics and PoC designs.
Technical Context
The MAX20040BATPA/VY+ implements a current-mode, peak-controlled buck-boost architecture with dual integrated H-bridge MOSFETs (HS1/LS1 on LX1 path, HS2/LS2 on LX2 path), 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 after startup via OUT-derived biasing.
It supports three operating modes: fixed-frequency PWM (via FSYNC high or external clock), skip mode (FSYNC grounded), and spread-spectrum modulation (SPS high), with cycle-by-cycle current limiting, thermal shutdown at 166°C, and overvoltage protection triggered at 108% of regulation. The COMP pin enables Type II compensation optimized for RHP zero stability in deep-boost conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2V to 36V after startup; supports cold-crank and load-dump transients up to 40V |
| Output Current | 1.2A max continuous; enables PoL supplies for ADAS sensors or display controllers |
| Switching Frequency | 200kHz to 2.2MHz resistor-programmable; allows compact 1.0μH inductors and low-ESR ceramic output caps |
| Quiescent Current | 52μA in standby (B/D versions); meets OEM sleep-mode current budgets for always-on modules |
| Output Accuracy | ±2% over line/load/temperature; ensures stable 5V rail for MCU peripherals and CAN transceivers |
| Package | 20-pin SWTQFN (4mm × 4mm); side-wettable leads support automated optical solder-joint inspection |
| AEC-Q100 Grade | Grade -40°C to +125°C ambient; qualified for under-hood and dashboard mounting locations |
Pinout & Package
MAX20040BATPA/VY+ uses a 20-pin, 4mm × 4mm side-wettable TQFN (SWTQFN) package with exposed thermal pad (EP). Pin 18 is no-connect; all other pins are electrically active per functional diagram and pin descriptions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Main power input | Bypassed with ≥4.7μF ceramic cap to PGND; powers internal BIAS and H-bridge FETs |
| LX1, LX2 | Switching nodes | LX1 connects IN→PGND (buck path); LX2 connects OUT→PGND (boost path); require low-inductance layout |
| OUT, OUT_S | Regulated output & sense | OUT delivers power; OUT_S provides Kelvin sensing to reject PCB trace IR drop |
| FB | Voltage feedback input | Connect to VCC for 5V fixed output; use resistive divider for 4V–15V adjustment (VFB = 1.25V) |
| PGOOD | Open-drain status flag | Asserts when VOUT > 96% of target; deasserts at <93%; requires 10kΩ pull-up to BIAS |
| EN | High-voltage enable | Logic-compatible from 3.3V to 40V; enables/disables converter with hysteresis |
| FSW | Frequency set resistor | Connect RFSW to AGND; 12kΩ sets 2.2MHz, 73.2kΩ sets 440kHz |
| FSYNC | Mode/sync control | Ground for skip mode; VCC or external clock for forced-PWM; 1MΩ internal pulldown |
| SPS | Spread-spectrum enable | Pull high to modulate fSW ±3% with triangular waveform; disabled during external sync |
| BST1, BST2 | Bootstrap supplies | Each requires 100nF ceramic cap to respective LX node for high-side gate drive |
Key Features
| Feature | Design Value |
|---|---|
| Integrated H-bridge topology | Eliminates need for external MOSFETs and gate drivers; reduces BOM count by ≥6 components |
| 2.2MHz max switching frequency | Enables use of sub-1.5μH inductors and 22μF ceramic output capacitors, shrinking total solution size |
| 52μA standby quiescent current | Extends battery life in always-on automotive modules such as telematics and door controllers |
| PGOOD with 96%/93% thresholds | Provides precise power-rail sequencing feedback for downstream processors and PMICs |
| Automotive temperature range | Validated operation from –40°C to +125°C ambient, supporting placement near engine compartments |
| Spread-spectrum modulation | Reduces peak EMI emissions by spreading energy across ±3% bandwidth, easing EMC certification |
Applications
| Infotainment Systems | Body Electronics |
|---|---|
Use Scenario: Powering LCD displays, audio amplifiers, and USB-C PD controllers in center-stack head units. IC Role / Device Role / Timing Role: Primary buck-boost PoL regulator converting 12V battery to stable 5V/9V/12V rails. Use Value: Maintains regulated output during cold-crank (2V) and load-dump (40V) events without brownout or shutdown. | Use Scenario: Supplying power to smart door modules, seat controllers, and mirror actuators. IC Role / Device Role / Timing Role: Always-on 5V supply with ultra-low IQ, enabling wake-on-LIN/CAN functionality. Use Value: 52μA standby current meets OEM requirements for <100μA system sleep current budgets. |
| Start-Stop Systems | Power over Coax (PoC) |
Use Scenario: Providing uninterrupted 5V power to camera ECUs during engine restart transients. IC Role / Device Role / Timing Role: Input-tolerant buck-boost converter bridging battery dips from 6V to 2V during cranking. Use Value: Seamless mode transition preserves video stream integrity without frame loss or reset. | Use Scenario: Generating clean 5V/12V bias for analog front-end ICs in automotive camera modules. IC Role / Device Role / Timing Role: Isolated secondary-side regulator powered via coaxial cable with minimal ripple. Use Value: Low 2.2MHz noise spectrum avoids interference with high-speed video signals on same coax. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20040DATPB/VY+ | Same die, different output voltage option: 5V fixed vs. 4V–12V adjustable; identical pinout and thermal performance | Used where variable output is required for multi-rail SoCs; not suitable for fixed-5V-only designs | Select MAX20040BATPA/VY+ for 5V fixed-output applications requiring guaranteed ±2% accuracy and simplified layout. |
| LM61480QRNXTQ1 | 1.2A buck-boost with 2.1MHz max fSW but no integrated H-bridge; requires external high-side/low-side FETs and bootstrap circuitry | Higher BOM cost and board area; lacks spread-spectrum and PGOOD; rated for –40°C to +125°C but not AEC-Q100 certified | Choose MAX20040BATPA/VY+ when AEC-Q100 compliance, integrated H-bridge, and EMI-reduction features are mandatory. |
Compared with MAX20040DATPB/VY+, the MAX20040BATPA/VY+ offers tighter 5V regulation (±2%) and eliminates external feedback resistors; versus LM61480QRNXTQ1, it delivers lower system-level cost, smaller footprint, and certified automotive reliability without design-in risk.
Availability
MAX20040BATPA/VY+ is available at Aetrix Electronics and suitable for infotainment systems, body electronics, and start-stop power management requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX20040BATPA/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, and communications markets since 1965.
The MAX20040 is part of Analog Devices' automotive power management portfolio, designed specifically for robust, low-IQ DC-DC conversion in harsh vehicle environments with wide input transients and stringent EMI limits.
FAQ
What is the maximum output current capability of the MAX20040BATPA/VY+?
The MAX20040BATPA/VY+ delivers up to 1.2A continuous output current under typical conditions (TA = 25°C, VIN = 14V, VOUT = 5V). This rating is validated across the full –40°C to +125°C automotive temperature range and accounts for thermal derating on standard four-layer PCBs. Peak current limit is 2.15A (typ) with cycle-by-cycle protection.
Does the MAX20040BATPA/VY+ support fixed 5V output without external resistors?
Yes, the MAX20040BATPA/VY+ supports fixed 5V output by connecting the FB pin directly to the VCC pin. This configures the internal 1.25V reference and precision resistive divider to deliver 5.0V ±2% over line, load, and temperature. No external feedback resistors are required for this configuration.
How does the MAX20040BATPA/VY+ handle input voltage transients up to 40V?
The MAX20040BATPA/VY+ tolerates 40V load-dump transients on the IN pin due to internal clamp structures and robust oxide design. Absolute maximum rating for IN is +40V, and the device remains functional without latch-up or damage during transient events ≤50ns. External input TVS is still recommended for long-duration surges.
Can the MAX20040BATPA/VY+ operate below 4.5V input after startup?
Yes - once initial startup conditions are met (IN > 3.5V and VCC UVLO cleared), the MAX20040BATPA/VY+ sustains operation down to 2V input by powering its internal bias circuitry from the regulated OUT pin. This enables reliable function during cold-crank scenarios common in 12V automotive systems.
Is the MAX20040BATPA/VY+ pin-compatible with other devices in the MAX20039/MAX20040 family?
Yes, all MAX20039/MAX20040 variants including MAX20040BATPA/VY+, MAX20040DATPB/VY+, and MAX20039BATPA/VY+ share identical 20-pin SWTQFN pinouts and thermal pads. Functionally, they differ only in output voltage configuration (fixed vs. adjustable) and current rating (1.2A vs. 0.6A), allowing layout reuse across designs.
MAX20040BATPA/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)
MAX20040BATPA/VY+ FAQ
1.How can I place an order for MAX20040BATPA/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20040BATPA/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 MAX20040BATPA/VY+ reliable?
The price and inventory of MAX20040BATPA/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20040BATPA/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20040BATPA/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20040BATPA/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20040BATPA/VY+?
MAX20040BATPA/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20040BATPA/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 MAX20040BATPA/VY+?
For technical support, including MAX20040BATPA/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20040BATPA/VY+ requirements.
6.How does Aetrix verify that MAX20040BATPA/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20040BATPA/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 MAX20040BATPA/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20040BATPA/VY+?
All MAX20040BATPA/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20040BATPA/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 MAX20040BATPA/VY+ part is unused and in its original packaging.
Return procedure for MAX20040BATPA/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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