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Analog Devices Inc./Maxim Integrated MAX20002ATPA/V+T
- Part No.:
- MAX20002ATPA/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX20002ATPA/V+T.pdf
- Description:
- IC REG BUCK PROG/1V 2A 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,909
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Product details
Overview
MAX20002ATPA/V+T from Maxim Integrated is a 2A synchronous buck DC-DC converter with integrated high-side and low-side MOSFETs, operating from 3.5V to 36V input and delivering fixed 5V/3.3V or adjustable 1V–10V output. It achieves 15µA quiescent current in skip mode, supports 220kHz–2.2MHz resistor-programmable switching frequency, and features PGOOD monitoring and AEC-Q100 qualification for automotive power rails.
For engineers reviewing the MAX20002ATPA/V+T datasheet, MAX20002ATPA/V+T pinout, MAX20002ATPA/V+T application, or MAX20002ATPA/V+T equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade specifications (including 42V load-dump protection, -40°C to +125°C operation, and 99% duty-cycle dropout capability), and real-world selection guidance against comparable alternatives.
Technical Context
The MAX20002ATPA/V+T implements current-mode control with internal transconductance error amplifier (gM = 700µS), enabling stable regulation across wide VIN and load ranges. Its dual-supply architecture separates SUP (bias regulator input) and SUPSW (high-side switch supply), supporting cold-crank operation down to 3.5V while maintaining regulation via 99% maximum duty cycle.
It offers dual operating modes: forced PWM (via FSYNC tied to BIAS or external clock) and skip mode (FSYNC to AGND), with spread-spectrum modulation (±3% around fSW) enabled via SPS pin. Overvoltage protection triggers at 107% VFB, and thermal shutdown activates at 175°C with 15°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2A continuous - supports automotive point-of-load rails requiring stable mid-power conversion without external current-sense components. |
| Input Voltage Range | 3.5V to 36V - enables direct connection to 12V/24V automotive batteries, including cold-crank (down to 3.5V) and load-dump (up to 42V transient) conditions. |
| Quiescent Current | 15µA in skip mode - minimizes standby power loss in always-on vehicle modules (e.g., telematics, body controllers). |
| Switching Frequency | 220kHz to 2.2MHz, resistor-programmable - allows optimization of inductor size (e.g., 2.2µH at 2.2MHz) and EMI profile via external RFOSC. |
| Output Voltage Options | Fixed 5V/3.3V (±2%) or adjustable 1V–10V (±1% FB accuracy) - supports diverse SoC, MCU, and sensor rail requirements with single-part flexibility. |
| Protection Features | 42V load-dump tolerance, cycle-by-cycle current limit, OVP (107% VFB), thermal shutdown (175°C), and PGOOD with 95%/92.5% thresholds - ensures robustness in harsh automotive environments. |
| Operating Temperature | -40°C to +125°C ambient - meets AEC-Q100 Grade 1 requirements for under-hood and infotainment applications. |
Pinout & Package
MAX20002ATPA/V+T is housed in a 20-pin 5mm × 5mm TQFN package with exposed pad (EP), optimized for thermal dissipation in high-density automotive PCB layouts. The package uses RoHS-compliant lead finish and requires EP soldered to a large contiguous PGND copper plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FOSC | Frequency-setting input | Connects to AGND via resistor (e.g., 12kΩ for 2.2MHz); sets oscillator frequency with ±3% spread-spectrum modulation when SPS is high. |
| 2 OUT | Power output node | Delivers regulated voltage; powers internal circuitry during light-load skip mode when VOUT ≥ 3V. |
| 3 FB | Feedback sensing input | Monitors output via resistive divider (1V reference); connects directly to BIAS for fixed 5V/3.3V operation. |
| 4 COMP | Error amplifier output | External RC compensation network stabilizes current-mode loop; critical for transient response and phase margin. |
| 5 BIAS | Internal LDO output | 5V ±5% linear regulator powering internal logic; requires ≥2.2µF ceramic bypass to AGND. |
| 6 AGND | Analog ground reference | Separate low-noise ground for feedback, compensation, and oscillator circuits; must be star-connected to PGND. |
| 7 EN | High-voltage enable input | Logic-compatible with 3.5V–36V supplies; 2.4V threshold enables direct connection to KL30 or CAN transceiver INH pins. |
| 8–9 SUPSW | High-side switch supply | Provides gate drive power to integrated MOSFETs; bypassed with 0.1µF + 4.7µF ceramics to PGND. |
| 10 SUP | Main supply input | Feeds internal bias regulator; bypassed with 2.2µF ceramic to PGND; shares 3.5V–36V range with SUPSW. |
| 11 PGOOD | Open-drain power-good flag | Asserts high when VOUT > 95% regulation; deasserts at <92.5%; used for sequencing with 10kΩ pull-up to BIAS. |
| 12 SPS | Spread-spectrum control | Pull high (>2.0V) to enable ±3% frequency dithering; reduces peak EMI by spreading spectral energy. |
| 13–14 PGND | Power ground return | Low-impedance return path for LX current and high-side/low-side MOSFETs; must connect to EP and system PGND. |
| 15 BST | Bootstrap supply | Connected via 0.1µF capacitor between BST and LX; generates gate drive voltage for high-side MOSFET. |
| 16–18 LX | Switching node | Drives external inductor; carries high di/dt current; requires tight layout with minimal loop area to reduce EMI. |
| 19 N.C. | No connection | Unbonded pin; must remain floating - no trace or solder mask opening required. |
| 20 FSYNC | Sync mode select | Tie to AGND for skip mode; tie to BIAS or external clock (1.8–2.6MHz) for forced PWM; never left floating. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with integrated FETs | Eliminates external MOSFETs and drivers - reduces BOM count, layout area, and design risk for 2A automotive rails. |
| Ultra-low 15µA quiescent current | Extends battery life in always-on systems (e.g., ADAS sensors, gateway ECUs) without sacrificing startup time or regulation accuracy. |
| Programmable 1V–10V output | Single part supports multiple SoC core voltages (e.g., 1.2V for processors, 3.3V for interfaces, 5V for USB peripherals) via external resistor divider. |
| AEC-Q100 qualified (-40°C to +125°C) | Validated for automotive use - includes 42V load-dump immunity, thermal shutdown recovery, and long-term reliability testing per stress standards. |
| PGOOD with precise thresholds | Enables safe power sequencing in multi-rail systems (e.g., infotainment head units) with 2.5% window (92.5%–95%) and 25µs debounce. |
Applications
| Automotive Infotainment Power Supply | ADAS Camera Module Rail |
|---|---|
Use Scenario: Powers SoC, display interface, and audio codec in navigation/radio head units with variable input from vehicle battery (6V–16V). IC Role / Device Role / Timing Role: Primary 5V/3.3V step-down regulator with PGOOD signaling for controlled boot sequence and fault reporting. Use Value: Maintains regulation during cold-crank dips (down to 3.5V) and load-dump spikes (up to 42V), ensuring uninterrupted operation without external protection circuitry. |
Use Scenario: Supplies 1.2V core and 3.3V I/O rails to CMOS image sensors and ISP processors in forward-facing cameras. IC Role / Device Role / Timing Role: Adjustable-output buck converter synchronized to system clock (via FSYNC) to minimize EMI coupling into analog video paths. Use Value: Spread-spectrum mode reduces radiated emissions at critical frequencies, helping meet CISPR-25 Class 5 limits without added shielding or filters. |
| Body Control Module (BCM) Subsystem | Telematics Control Unit (TCU) Always-On Rail |
Use Scenario: Generates 5V for microcontroller, CAN transceivers, and LIN bus interfaces in door modules and lighting controllers. IC Role / Device Role / Timing Role: High-efficiency 2A buck with EN pin tied to ignition-switched supply for automatic on/off control and low-quiescent sleep state. Use Value: 15µA skip-mode current prevents battery drain during vehicle off-state, extending parasitic draw below 20µA for 10-year battery life compliance. |
Use Scenario: Provides always-on 3.3V rail for GPS receiver, cellular modem, and secure element in connected vehicle gateways. IC Role / Device Role / Timing Role: Automotive-qualified DC-DC with thermal shutdown and overvoltage protection to sustain operation in sealed, thermally constrained enclosures. Use Value: 125°C junction rating and 30°C/W θJA allow full 2A output in compact TCU designs without forced airflow or heatsinks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480RQWR | 3.5V–36V input, 4A output, 14µA IQ, fixed 2.1MHz fSW (no resistor programming), no spread spectrum | Better suited for higher-current loads (e.g., domain controllers); lacks SPS pin and adjustable frequency, limiting EMI tuning flexibility | Select when 4A output and fixed-frequency simplicity outweigh need for frequency adjustment or spread-spectrum EMI reduction |
| TPS54240DGQR | 3.5V–42V input, 2A output, 110µA IQ, 100kHz–2.5MHz adjustable fSW, no AEC-Q100 qualification | Higher IQ increases standby loss in always-on systems; lacks automotive qualification and load-dump immunity testing | Consider only for non-automotive industrial applications where cost sensitivity outweighs automotive reliability requirements |
Compared with LM61480RQWR and TPS54240DGQR, the MAX20002ATPA/V+T uniquely combines AEC-Q100 qualification, 15µA skip-mode IQ, resistor-programmable frequency (220kHz–2.2MHz), and spread-spectrum capability - making it the optimal choice for space-constrained, EMI-sensitive automotive subsystems requiring guaranteed low-power operation across temperature and transient extremes.
Availability
MAX20002ATPA/V+T is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, body control units, and telematics systems requiring stable component supply with full AEC-Q100 compliance and long-term production support.
Supply support for MAX20002ATPA/V+T 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, designs precision analog, mixed-signal, and power management ICs for automotive, industrial, and communications markets, emphasizing high reliability and integration.
The MAX20002/MAX20003 product line targets automotive power conversion, delivering fully integrated, AEC-Q100-qualified buck regulators that simplify design of robust, low-quiescent-current DC-DC stages for demanding vehicle environments.
FAQ
What is the maximum output current supported by the MAX20002ATPA/V+T?
The MAX20002ATPA/V+T delivers up to 2A continuous output current under typical conditions (TA = +25°C, VIN = 14V, VOUT = 5V, fSW = 2.2MHz). Its current-limit threshold is specified at 2.5A (min) to 4.16A (max), allowing reliable operation across temperature and process variation while maintaining safety margins for transient loads.
Does the MAX20002ATPA/V+T support adjustable output voltage, and how is it configured?
Yes, the MAX20002ATPA/V+T supports output voltages from 1V to 10V using an external resistive divider from OUT to FB to AGND. The FB pin references an internal 1.00V (±1%) bandgap, so RFB1 and RFB2 are calculated using VOUT = 1V × (1 + RFB1/RFB2). For fixed 5V or 3.3V, connect FB directly to BIAS.
How does the MAX20002ATPA/V+T handle automotive load-dump transients?
The MAX20002ATPA/V+T withstands 42V load-dump transients (t < 1s) on the SUP and SUPSW pins without damage or regulation loss. Its internal protection circuitry clamps input overvoltage and maintains functional operation, eliminating the need for external TVS diodes in most automotive designs compliant with ISO 7637-2 Pulse 5a.
What is the purpose of the FSYNC pin on the MAX20002ATPA/V+T, and how should it be used?
The FSYNC pin selects operating mode: tie to AGND for skip mode (ultra-low IQ), or to BIAS/external clock for forced PWM (fixed frequency). When synchronized to an external clock, the MAX20002ATPA/V+T locks within two cycles and accepts frequencies from 1.8MHz to 2.6MHz - enabling EMI reduction through deterministic frequency placement.
Is the MAX20002ATPA/V+T qualified for automotive applications, and what standards does it meet?
Yes, the MAX20002ATPA/V+T is AEC-Q100 qualified (Grade 1, -40°C to +125°C), with tested performance across automotive voltage transients (cold crank, load dump), thermal cycling, and humidity exposure. It meets ISO 16750-2 for electrical loads and supports functional safety development per ISO 26262 ASIL-B readiness documentation.
MAX20002ATPA/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1V (5V)
- Voltage - Output (Max):
- 10V
- Current - Output:
- 2A
- Frequency - Switching:
- 220kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX20002ATPA/V+T FAQ
1.How can I place an order for MAX20002ATPA/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20002ATPA/V+T 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 MAX20002ATPA/V+T reliable?
The price and inventory of MAX20002ATPA/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20002ATPA/V+T is usually 5 days.
3.What payment methods are accepted for MAX20002ATPA/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20002ATPA/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20002ATPA/V+T?
MAX20002ATPA/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20002ATPA/V+T 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 MAX20002ATPA/V+T?
For technical support, including MAX20002ATPA/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20002ATPA/V+T requirements.
6.How does Aetrix verify that MAX20002ATPA/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20002ATPA/V+T 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 MAX20002ATPA/V+T meets industry standards.
7.What is the process for return or replacement of MAX20002ATPA/V+T?
All MAX20002ATPA/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20002ATPA/V+T, 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 MAX20002ATPA/V+T part is unused and in its original packaging.
Return procedure for MAX20002ATPA/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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