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Analog Devices Inc./Maxim Integrated MAX20002ATPB/V+TC2
- Part No.:
- MAX20002ATPB/V+TC2
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX20002ATPB/V+TC2.pdf
- Description:
- IC REG BUCK PROG/1V 2A 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,778
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Product details
Overview
MAX20002ATPB/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 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 MAX20002ATPB/V+TC2 datasheet, MAX20002ATPB/V+TC2 pinout, MAX20002ATPB/V+TC2 application, or MAX20002ATPB/V+TC2 equivalent, key selection criteria include its 99% dropout capability, ±1% FB accuracy for adjustable outputs, 42V load-dump protection, -40°C to +125°C automotive temperature range, and spread-spectrum EMI reduction via SPS pin control.
Technical Context
This current-mode synchronous buck regulator integrates both power switches and a 5V BIAS LDO, enabling self-powered operation when VOUT ≥ 3V. Its dual supply inputs (SUP and SUPSW) decouple bias and switch driver domains, supporting stable operation during cold-crank transients down to 3.5V.
The device implements cycle-by-cycle current limiting, thermal shutdown at 175°C with 15°C hysteresis, and fast overvoltage protection (107% VFB trip) optimized for automotive transient immunity. FSYNC pin enables seamless transition between skip mode (ultra-low IQ) and forced-PWM mode (EMI-controlled fixed frequency), while SPS pin toggles ±3% triangular spread spectrum modulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2A continuous - supports automotive infotainment SoC core rails and ADAS sensor modules without external current boosting. |
| Input Voltage Range | 3.5V to 36V - covers full automotive battery range including cold crank (≥3.5V) and load dump (≤42V protected). |
| Quiescent Current | 15µA in skip mode - enables always-on systems (e.g., CAN wake-up receivers) to meet <100µA system standby budgets. |
| 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 Accuracy | ±2% for fixed 5V/3.3V; ±1% FB reference (0.99V–1.01V) for adjustable outputs - ensures precise voltage regulation across temperature and line/load variations. |
| Duty Cycle Max | 99% - maintains regulation during undervoltage events (e.g., engine start) with minimal dropout (VOUT ≈ 0.99 × VIN − IOUT × RON_H). |
| Protection Features | Cycle-by-cycle current limit, thermal shutdown (175°C), overvoltage protection (107% VFB), 42V load-dump tolerance - meets ISO 7637-2 Pulse 5a requirements. |
Pinout & Package
MAX20002ATPB/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 large contiguous PGND copper plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FOSC | Frequency-setting input | Connect resistor to AGND to set fSW from 220kHz–2.2MHz; determines inductor sizing and EMI profile. |
| OUT | Power output node | Delivers regulated DC output; powers internal circuitry via BIAS when VOUT ≥ 3V in skip mode. |
| FB | Feedback sensing input | Monitors output via resistive divider (1V reference); connects directly to BIAS for fixed 5V/3.3V operation. |
| COMP | Error amplifier output | External RC compensation network stabilizes control loop; required for all configurations except fixed-output with no external components. |
| BIAS | Internal LDO output | 5V ±5% regulated supply for internal logic; bypassed with ≥2.2µF ceramic capacitor to AGND. |
| EN | High-voltage enable input | Logic-compatible with 3.5V–36V; enables/disables converter with 2.4V HI / 0.6V LO thresholds and 0.2V hysteresis. |
| SUPSW | High-side switch supply | Separate input for gate driver; bypassed with 0.1µF + 4.7µF ceramics to PGND to minimize switching noise coupling. |
| SUP | Main supply input | Powers internal bias regulator; bypassed with 2.2µF ceramic to PGND; shares 3.5V–36V rating with SUPSW. |
| PGOOD | Open-drain power-good flag | Asserts high when VOUT > 95% of regulation; deasserts at 92.5%; used for power sequencing with external pull-up. |
| SPS | Spread-spectrum control | Pull high to enable ±3% triangular frequency modulation (110µs period at 2.2MHz); reduces peak EMI by spreading energy. |
| FSYNC | External clock sync input | Connect to AGND for skip mode; to BIAS or external clock for forced-PWM; synchronizes within two cycles. |
| LX (16–18) | Switching node | Three parallel pins for high-current inductor connection; minimizes trace inductance and thermal resistance. |
| PGND (13–14) | Power ground return | Dedicated low-impedance path for high di/dt currents; must be separated from AGND and tied to EP at single point. |
| BST | Bootstrap supply | Connect 0.1µF ceramic between BST and LX to generate gate drive voltage for high-side MOSFET. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with integrated FETs | Eliminates external MOSFETs and drivers; RON_H ≤ 140mΩ / RON_L ≤ 70mΩ reduce conduction losses and simplify layout. |
| Ultra-low quiescent current | 15µA in skip mode enables >1-year battery life in always-on automotive modules (e.g., telematics, alarm controllers). |
| AEC-Q100 qualified | Rated for automotive Grade 1 (-40°C to +125°C junction); includes 42V load-dump protection and cold-crank operation support. |
| Programmable spread spectrum | SPS pin enables ±3% frequency dithering without external components - reduces conducted EMI peaks by up to 10dB. |
| Fixed 8ms soft-start | Prevents inrush current during power-up; eliminates need for external soft-start timing components in most applications. |
| PGOOD with 25µs debounce | Provides clean, glitch-free power-status signal for microcontroller reset sequencing and fault logging in safety-critical systems. |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Powers 3.3V/5V rails for navigation head units, radio processors, and display controllers in vehicles with wide battery variation. IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 2A output; handles cold-crank dips and load-dump spikes without brownout. Use Value: 99% duty cycle and 42V tolerance ensure uninterrupted operation during engine start and alternator faults. |
Use Scenario: Supplies image sensor and ISP in rear-view or surround-view camera modules requiring low-noise, compact DC-DC conversion. IC Role / Device Role / Timing Role: High-efficiency buck converter with spread-spectrum EMI control to avoid interference with analog video signals. Use Value: ±1% FB accuracy and 15µA skip-mode IQ maintain image quality and extend parking-mode battery runtime. |
| Telematics Control Unit (TCU) | Automotive Gateway ECU |
|
Use Scenario: Provides 5V rail for cellular modem, GNSS receiver, and CAN transceivers in connected vehicle platforms. IC Role / Device Role / Timing Role: Always-on power source with EN pin compatible to KL30/KL15 battery domains; supports CAN wake-up functionality. Use Value: 15µA IQ and AEC-Q100 qualification meet OEM requirements for 10-year field reliability and low-power connectivity. |
Use Scenario: Generates 3.3V core supply for multi-protocol gateway MCUs managing CAN FD, LIN, and Ethernet interfaces. IC Role / Device Role / Timing Role: Robust primary DC-DC stage with PGOOD sequencing and thermal protection for multi-rail power management. Use Value: Dual SUP/SUPSW inputs isolate noise-sensitive logic from high-current switching paths, improving signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20003ATPB/V+TC2 | 3A output current, higher LX current limit (5A typ), identical pinout and feature set. | Required where peak load exceeds 2A (e.g., high-brightness display backlight drivers). | Select MAX20003ATPB/V+TC2 only if sustained >2A load current is needed; otherwise MAX20002ATPB/V+TC2 offers better light-load efficiency. |
| LM61480RQR | 3.5V–36V input, 3A output, 14µA IQ, but no spread-spectrum control or AEC-Q100 qualification. | Suitable for industrial or commercial applications lacking automotive qualification or EMI constraints. | Choose LM61480RQR for cost-sensitive non-automotive designs; MAX20002ATPB/V+TC2 remains preferred for automotive-grade reliability and EMC compliance. |
Compared with MAX20003ATPB/V+TC2, the MAX20002ATPB/V+TC2 delivers optimal efficiency below 2A loads and lower thermal stress in compact layouts; versus LM61480RQR, it provides certified automotive robustness and integrated EMI mitigation not available in the TI part.
Availability
MAX20002ATPB/V+TC2 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, telematics control units, and gateway ECUs requiring stable component supply under AEC-Q100 conditions and long-term production continuity.
Supply support for MAX20002ATPB/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 demanding industrial, automotive, and communications applications.
The MAX20002/MAX20003 product line targets automotive power conversion with emphasis on ultra-low IQ, high-voltage resilience, and EMI control - specifically engineered for infotainment, ADAS, and body electronics subsystems.
FAQ
What is the maximum output current supported by the MAX20002ATPB/V+TC2?
The MAX20002ATPB/V+TC2 delivers up to 2A continuous output current under typical thermal conditions (TA ≤ +70°C, 4-layer PCB). Its LX current limit is specified at 2.5A (min) to 4.16A (max), ensuring reliable operation with margin against transient overloads. Derating applies above +70°C ambient per the 33.3mW/°C thermal coefficient.
Does the MAX20002ATPB/V+TC2 support adjustable output voltages?
Yes, the MAX20002ATPB/V+TC2 supports output voltages from 1V to 10V using an external resistive divider connected to the FB pin, with ±1% feedback reference accuracy (VFB = 1.00V ±10mV). For fixed outputs, connect FB directly to BIAS to select 5V or 3.3V - both guaranteed within ±2% over temperature and line.
How does the MAX20002ATPB/V+TC2 handle automotive cold-crank conditions?
The MAX20002ATPB/V+TC2 operates down to 3.5V input and supports 99% maximum duty cycle, enabling regulation during cold-crank events where battery voltage drops below nominal. Its dual SUP/SUPSW inputs maintain gate drive and bias stability even when input falls near the output voltage, preventing dropout-induced system resets.
What is the purpose of the SPS pin on the MAX20002ATPB/V+TC2?
The SPS (Spread Spectrum) pin on the MAX20002ATPB/V+TC2 enables ±3% triangular frequency modulation centered on the programmed FOSC value. When pulled high, it reduces peak EMI emissions without external components - critical for passing CISPR 25 Class 5 automotive EMC tests. Modulation period scales inversely with fSW (e.g., 110µs at 2.2MHz, 550µs at 400kHz).
Is the MAX20002ATPB/V+TC2 AEC-Q100 qualified?
Yes, the MAX20002ATPB/V+TC2 is AEC-Q100 qualified for automotive Grade 1 operation (-40°C to +125°C junction temperature). It includes 42V load-dump protection, thermal shutdown with hysteresis, and robust ESD performance - meeting requirements for front-end power conversion in infotainment, ADAS, and body control modules.
MAX20002ATPB/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 (3.3V)
- 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)
MAX20002ATPB/V+TC2 FAQ
1.How can I place an order for MAX20002ATPB/V+TC2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20002ATPB/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 MAX20002ATPB/V+TC2 reliable?
The price and inventory of MAX20002ATPB/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 MAX20002ATPB/V+TC2 is usually 5 days.
3.What payment methods are accepted for MAX20002ATPB/V+TC2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20002ATPB/V+TC2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20002ATPB/V+TC2?
MAX20002ATPB/V+TC2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20002ATPB/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 MAX20002ATPB/V+TC2?
For technical support, including MAX20002ATPB/V+TC2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20002ATPB/V+TC2 requirements.
6.How does Aetrix verify that MAX20002ATPB/V+TC2 is sourced from the original manufacturer or authorized distributors?
All MAX20002ATPB/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 MAX20002ATPB/V+TC2 meets industry standards.
7.What is the process for return or replacement of MAX20002ATPB/V+TC2?
All MAX20002ATPB/V+TC2 units undergo pre-shipment inspection (PSI). If there is an issue with MAX20002ATPB/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 MAX20002ATPB/V+TC2 part is unused and in its original packaging.
Return procedure for MAX20002ATPB/V+TC2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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