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Analog Devices Inc./Maxim Integrated MAX20002ATPA/V+TC2
- Part No.:
- MAX20002ATPA/V+TC2
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX20002ATPA/V+TC2.pdf
- Description:
- IC REG BUCK PROG/1V 2A 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,581
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Product details
Overview
MAX20002ATPA/V+TC2 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 features 15µA quiescent current in skip mode, 220kHz–2.2MHz resistor-programmable switching frequency, and AEC-Q100 qualification for automotive point-of-load regulation.
For engineers reviewing the MAX20002ATPA/V+TC2 datasheet, MAX20002ATPA/V+TC2 pinout, MAX20002ATPA/V+TC2 application, or MAX20002ATPA/V+TC2 equivalent, this page delivers verified electrical parameters, validated 20-pin TQFN package mapping, confirmed automotive-grade protection features (42V load-dump, -40°C to +125°C), and two production-ready alternative parts with documented technical and application differences.
Technical Context
The MAX20002ATPA/V+TC2 implements current-mode control with internal transconductance error amplifier (700µS), 8ms fixed soft-start, and cycle-by-cycle current limiting. Its dual-supply architecture separates SUP (bias regulator input) and SUPSW (high-side switch supply), enabling stable operation down to 3.5V during cold-crank events.
It supports three operational modes: forced PWM (via FSYNC tied to BIAS or external clock), skip mode (FSYNC to AGND), and spread-spectrum modulation (SPS pin high, ±3% frequency dither). Dropout operation at up to 99% duty cycle is enabled by real-time off-time monitoring and forced low-side conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2A continuous - supports automotive infotainment modules requiring stable 3.3V/5V rail under transient loads. |
| Input Voltage Range | 3.5V to 36V - covers full automotive battery range including cold-crank (down to 3.5V) and load-dump (up to 42V). |
| Quiescent Current | 15µA in skip mode - enables always-on systems (e.g., CAN wake-up circuits) without draining battery. |
| Switching Frequency | 220kHz to 2.2MHz (resistor-programmable) - allows trade-off between inductor size (higher fSW → smaller L) and efficiency (lower fSW → lower switching loss). |
| Output Voltage Accuracy | ±2% for fixed 5V/3.3V outputs - ensures reliable power sequencing for microcontrollers and sensors in ADAS ECUs. |
| Thermal Protection | 175°C shutdown with 15°C hysteresis - prevents thermal runaway in enclosed automotive junction boxes. |
| PGOOD Threshold | 95% VOUT rising / 92.5% VOUT falling - provides precise power-rail monitoring for system reset controllers. |
Pinout & Package
MAX20002ATPA/V+TC2 is housed in a 5mm × 5mm, 20-pin TQFN package with exposed pad (EP), RoHS-compliant, thermal resistance θJA = 30°C/W (4-layer board). The EP must be soldered to a contiguous PGND copper plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FOSC | Frequency-setting input | Resistor-to-AGND sets switching frequency (220kHz–2.2MHz); determines inductor/capacitor sizing and EMI profile. |
| OUT | Power output node | Delivers regulated voltage; powers internal circuitry when output is 3V–5V in skip mode after BIAS switchover. |
| FB | Feedback input | Connects to resistive divider (1V reference) for adjustable output (1V–10V) or to BIAS for fixed 5V/3.3V. |
| COMP | Error amplifier output | External RC compensation network stabilizes control loop; critical for transient response in navigation head units. |
| BIAS | 5V linear regulator output | Powers internal analog blocks; requires ≥2.2µF ceramic bypass to AGND for noise immunity. |
| EN | Enable input | High-voltage compatible (3.5V–36V logic threshold); interfaces directly with KL30 or CAN transceiver INH pins. |
| SUPSW | High-side switch supply | Separate input for gate driver; bypassed with 0.1µF + 4.7µF ceramics to PGND for low-impedance switching current return. |
| SUP | Main supply input | Powers internal bias regulator; bypassed with 2.2µF ceramic to PGND; supports wide VIN range without external LDO. |
| PGOOD | Open-drain status output | Asserts high when VOUT ≥95% of target; used for power sequencing in multi-rail automotive ECUs. |
| SPS | Spread-spectrum enable | Pull high to reduce EMI peaks by ±3% frequency dither; disabled automatically when synchronized to external clock. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with integrated FETs | Eliminates external MOSFETs and drivers; RON_H = 140mΩ max, RON_L = 70mΩ max reduces conduction loss in compact layouts. |
| Automotive-grade protection suite | 42V load-dump tolerance, cycle-by-cycle current limit, overvoltage protection (107% VOUT), and thermal shutdown ensure reliability in harsh environments. |
| Ultra-low IQ skip mode | 15µA no-load current enables >1-year battery life in always-on telematics modules without compromising startup time. |
| Flexible output configuration | Fixed 5V/3.3V or resistor-adjustable 1V–10V output with ±1% FB reference accuracy supports diverse SoC and sensor supply requirements. |
| Robust power sequencing support | High-voltage EN input, PGOOD with 25µs debounce, and 8ms soft-start simplify integration into ASIL-B compliant power trees. |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Powers display controller, audio DSP, and USB interface in car radio head units with 12V battery input. IC Role / Device Role / Timing Role: Primary 5V/3.3V point-of-load regulator; handles cold-crank dips and load-dump surges without rail collapse. Use Value: 99% duty-cycle dropout operation maintains 5V output even at 4.2V input, preventing system reset during engine start. |
Use Scenario: Supplies image sensor and ISP in rear-view or surround-view camera modules mounted in hot under-hood locations. IC Role / Device Role / Timing Role: High-efficiency 3.3V buck converter with thermal shutdown and -40°C to +125°C operation. Use Value: 15µA skip-mode IQ extends battery backup runtime during vehicle sleep mode while maintaining fast wake-up response. |
| Body Control Module (BCM) Core Rail | Telematics Control Unit (TCU) Auxiliary Supply |
|
Use Scenario: Generates stable 3.3V core voltage for microcontroller and CAN transceivers in door module ECUs. IC Role / Device Role / Timing Role: Main DC-DC regulator with PGOOD signaling for safe MCU boot and watchdog reset coordination. Use Value: ±2% output accuracy and 25µs PGOOD debounce ensure deterministic power-up timing across temperature and line variations. |
Use Scenario: Provides isolated 5V rail for LTE modem and GNSS receiver in cellular-connected vehicle gateways. IC Role / Device Role / Timing Role: Secondary buck converter synchronized via FSYNC to avoid interference with RF front-end clocks. Use Value: External clock synchronization eliminates beat frequencies with cellular bands, reducing conducted EMI in sensitive RF zones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480RQR | 3.5V–36V input, 4A output, 20µA IQ, fixed 5V option only; no spread-spectrum or BIAS regulator. | Higher current capability but lacks programmable output and integrated bias rail - requires external LDO for analog blocks. | Select when >2A load current is required and fixed 5V suffices; verify external bias supply meets noise specs for ADCs. |
| TPS54240DGQR | 3.5V–42V input, 2A output, 115µA IQ, external MOSFETs required; no AEC-Q100 qualification. | Lower integration increases BOM count and layout complexity; not qualified for automotive temperature or stress testing. | Consider for cost-sensitive industrial designs where AEC-Q100 and ultra-low IQ are not mandatory. |
Compared with LM61480RQR and TPS54240DGQR, MAX20002ATPA/V+TC2 uniquely combines AEC-Q100 qualification, 15µA skip-mode IQ, integrated BIAS regulator, and spread-spectrum EMI reduction - making it optimal for space-constrained, battery-sensitive automotive subsystems requiring single-chip simplicity.
Availability
MAX20002ATPA/V+TC2 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, body control units, and telematics systems requiring stable component supply across extended temperature and lifecycle demands.
Supply support for MAX20002ATPA/V+TC2 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.
MAX20002ATPA/V+TC2 belongs to Maxim's automotive-qualified DC-DC converter family, engineered specifically for robust, low-IQ point-of-load regulation in harsh vehicular environments with wide input transients.
FAQ
What is the maximum duty cycle supported by MAX20002ATPA/V+TC2?
MAX20002ATPA/V+TC2 supports up to 99% duty cycle in dropout mode, enabling operation when input voltage drops near output voltage - critical for automotive cold-crank scenarios where battery voltage falls to 3.5V while maintaining regulated 3.3V/5V output. This behavior is achieved through real-time off-time monitoring and forced low-side conduction every 12µs.
Does MAX20002ATPA/V+TC2 require an external BIAS supply?
No. MAX20002ATPA/V+TC2 integrates a 5V linear regulator (BIAS) that powers internal analog circuitry. A minimum 2.2µF ceramic capacitor must be placed between BIAS and AGND. When the output is set to 3.3V or 5V, BIAS automatically switches to the buck output after startup, eliminating need for external bias rails.
How does the PGOOD signal behave during output undervoltage?
PGOOD on MAX20002ATPA/V+TC2 is an open-drain output that asserts high when VOUT rises above 95% of its regulation voltage and deasserts (pulls low) when VOUT falls below 92.5%. Its 25µs internal debounce prevents false triggering during brief transients - essential for reliable power sequencing in automotive ECUs.
Can MAX20002ATPA/V+TC2 be synchronized to an external clock?
Yes. Connecting the FSYNC pin to an external clock source (within ±20% of internal frequency) forces MAX20002ATPA/V+TC2 into fixed-frequency PWM mode. The device synchronizes within two cycles and passes any modulation present on the external clock - enabling coordinated switching in multi-converter systems to avoid beat frequencies.
Is MAX20002ATPA/V+TC2 qualified for automotive use?
Yes. MAX20002ATPA/V+TC2 is AEC-Q100 qualified (Grade 1: -40°C to +125°C), features 42V load-dump protection, operates from 3.5V to 36V input, and includes automotive-specific protections including fast overvoltage recovery and thermal shutdown with hysteresis - meeting requirements for engine bay and cabin-mounted ECUs.
MAX20002ATPA/V+TC2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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+TC2 FAQ
1.How can I place an order for MAX20002ATPA/V+TC2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20002ATPA/V+TC2 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+TC2 reliable?
The price and inventory of MAX20002ATPA/V+TC2 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+TC2 is usually 5 days.
3.What payment methods are accepted for MAX20002ATPA/V+TC2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20002ATPA/V+TC2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20002ATPA/V+TC2?
MAX20002ATPA/V+TC2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20002ATPA/V+TC2 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+TC2?
For technical support, including MAX20002ATPA/V+TC2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20002ATPA/V+TC2 requirements.
6.How does Aetrix verify that MAX20002ATPA/V+TC2 is sourced from the original manufacturer or authorized distributors?
All MAX20002ATPA/V+TC2 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+TC2 meets industry standards.
7.What is the process for return or replacement of MAX20002ATPA/V+TC2?
All MAX20002ATPA/V+TC2 units undergo pre-shipment inspection (PSI). If there is an issue with MAX20002ATPA/V+TC2, 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+TC2 part is unused and in its original packaging.
Return procedure for MAX20002ATPA/V+TC2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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