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Analog Devices Inc./Maxim Integrated MAX20002DATPA/V+T
- Part No.:
- MAX20002DATPA/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
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MAX20002DATPA/V+T.pdf
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- IC REG
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Product details
Overview
MAX20002DATPA/V+T from Maxim Integrated is a 2A synchronous buck 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 standby, 220kHz–2.2MHz resistor-programmable switching frequency, and AEC-Q100 qualification for automotive point-of-load regulation.
For engineers reviewing the MAX20002DATPA/V+T datasheet, MAX20002DATPA/V+T pinout, MAX20002DATPA/V+T application, or MAX20002DATPA/V+T equivalent, key selection criteria include dropout operation at 99% duty cycle, PGOOD monitoring, spread-spectrum enablement via SPS pin, and 42V load-dump protection in harsh automotive environments.
Technical Context
This current-mode step-down regulator integrates both power switches and a 5V BIAS linear regulator, enabling self-powered operation without external bias supplies. Its dual supply inputs (SUP and SUPSW) support cold-crank resilience down to 3.5V while maintaining regulation through high-duty-cycle operation.
The device supports two distinct operating modes: forced PWM (via FSYNC tied to BIAS or external clock) and skip mode (FSYNC to AGND), with ultra-low 15µA no-load current in skip mode. 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 infotainment and ADAS subsystems without external current boosting |
| Input Voltage Range | 3.5V to 36V - accommodates full automotive battery range including cold crank (≥3.5V) and load dump (≤42V) |
| Quiescent Current | 15µA in standby - enables always-on systems with minimal battery drain during vehicle sleep mode |
| Switching Frequency | 220kHz to 2.2MHz (resistor-programmable) - allows trade-off between inductor size and efficiency across EMI-sensitive bands |
| Output Accuracy | ±2% for fixed 5V/3.3V outputs - ensures reliable MCU and sensor rail compliance without post-regulation |
| Duty Cycle Max | 99% - sustains regulation during undervoltage transients such as engine cranking |
| PGOOD Threshold | 95% VFB rising / 92.5% VFB falling - provides precise power sequencing control for downstream logic |
Pinout & Package
MAX20002DATPA/V+T is housed in a 5mm × 5mm, 20-pin TQFN package with exposed pad (EP), optimized for thermal dissipation in space-constrained automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FOSC | Frequency-setting input | Connects to AGND via resistor (e.g., 12kΩ → 2.2MHz); sets oscillator frequency and enables spread-spectrum modulation when SPS = high |
| OUT | Power output node | Delivers regulated DC output; powers internal circuitry when VOUT = 3–5V in standby 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 | Accepts RC compensation network (RC/CC) to stabilize current-mode control loop with ceramic output capacitors |
| BIAS | Integrated 5V LDO output | Powers internal analog blocks; requires ≥2.2µF ceramic bypass to AGND for stability |
| EN | High-voltage enable input | Logic-compatible with 3.5V–36V automotive rails; 2.4V threshold enables direct connection to KL30 or CAN transceiver INH |
| SUPSW | High-side switch supply | Separate input for gate driver; bypassed with 0.1µF + 4.7µF ceramics to PGND for low-impedance switching return |
| SUP | Main supply input | Feeds internal bias regulator; bypassed with 2.2µF ceramic to PGND; supports 3.5V cold-crank operation |
| PGOOD | Open-drain status output | Asserts high when VOUT ≥ 95% regulation; debounced 25µs; sinks 5mA max at 0.4V |
| SPS | Spread-spectrum control | Pull high to enable ±3% triangular frequency modulation (110µs period at 2.2MHz); disabled when synchronized to external clock |
| LX (pins 16–18) | Switching node | Connects to inductor; three parallel pins reduce trace inductance and improve thermal spreading |
| PGND (pins 13–14) | Power ground return | Separate from AGND; must connect to large copper pour under EP for thermal and EMI performance |
| BST | Bootstrap supply | Requires 0.1µF capacitor between BST and LX to drive high-side MOSFET gate above input rail |
| FSYNC | Mode selection & sync input | Tie to AGND for skip mode; tie to BIAS or external clock (±20% tolerance) for forced PWM; never float |
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 at 2A |
| Automotive-grade reliability | AEC-Q100 qualified, -40°C to +125°C ambient operation, 42V load-dump survival, and thermal shutdown with auto-recovery |
| Flexible output configuration | Fixed 5V/3.3V (±2%) or adjustable 1V–10V (±1% FB accuracy) via external resistor divider - supports diverse SoC and sensor rails |
| EMI mitigation architecture | Programmable spread spectrum (±3%), selectable skip/PWM modes, and 220kHz–2.2MHz frequency tuning reduce peak emissions across CISPR 25 bands |
| Robust power sequencing | PGOOD with tight 2.5% window and 8ms internal soft-start simplify multi-rail startup coordination in navigation head units and telematics modules |
Applications
| Navigation Head Unit Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers display controller, GPS baseband, and audio DSP in automotive infotainment head units requiring stable 5V/3.3V rails during engine start-stop cycles. IC Role / Device Role / Timing Role: Primary DC-DC regulator delivering 2A at 5V with PGOOD signaling to enable system boot only after rail stabilization. Use Value: 99% duty cycle maintains regulation during 6V cold-crank events; 15µA quiescent current prevents battery drain during vehicle sleep mode. |
Use Scenario: Supplies image sensor, ISP, and serializer in rear-view or surround-view camera modules exposed to wide temperature and voltage transients. IC Role / Device Role / Timing Role: Point-of-load converter providing clean 3.3V at 2A with fast OVP response (<1µs) to suppress transient-induced pixel corruption. Use Value: 42V load-dump protection and -40°C to +125°C operation ensure uninterrupted video streaming in extreme ambient conditions. |
| Telematics Control Unit (TCU) | Body Control Module (BCM) Subsystem |
Use Scenario: Generates isolated 3.3V rail for cellular modem, GNSS receiver, and CAN FD transceiver in connected vehicle telematics gateways. IC Role / Device Role / Timing Role: High-efficiency buck converter with spread-spectrum enabled to meet CISPR 25 Class 5 radiated emissions limits near RF antennas. Use Value: ±3% frequency modulation reduces EMI peaks by >10dB; FSYNC synchronization allows coexistence with other switching regulators in dense PCB layouts. |
Use Scenario: Powers microcontroller, LIN transceivers, and LED drivers in body electronics modules where space and thermal constraints limit discrete solutions. IC Role / Device Role / Timing Role: Compact 5mm × 5mm TQFN regulator delivering 2A with minimal external components (inductor, 3 caps, 1 resistor). Use Value: Small solution size saves >40% board area vs. controller+FET solutions; exposed pad enables 30°C/W θJA for passive cooling in sealed enclosures. |
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, 14µA IQ, but no integrated BIAS LDO or spread-spectrum capability | Lacks dedicated BIAS rail and PGOOD accuracy (±3% vs. ±2%), limiting use in precision sequencing | Prefer MAX20002DATPA/V+T when BIAS self-powering, tight PGOOD thresholds, or EMI reduction via spread spectrum are required |
| TPS54240DGQR | 3.5V–42V input, 2A output, 110µA IQ, external FETs, no AEC-Q100 qualification | Higher quiescent current disqualifies for always-on automotive modules; lacks load-dump rating and automotive temp range | MAX20002DATPA/V+T is preferred for AEC-Q100-compliant designs needing <20µA IQ and 42V survivability |
Compared with LM61480RQR and TPS54240DGQR, MAX20002DATPA/V+T uniquely combines AEC-Q100 qualification, integrated BIAS LDO, ±2% fixed-output accuracy, and programmable spread spectrum-making it optimal for cost-sensitive, space-constrained automotive subsystems demanding low IQ and robust EMC performance.
Availability
MAX20002DATPA/V+T is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics control units requiring stable component supply with long lifecycle support and AEC-Q100 traceability.
Supply support for MAX20002DATPA/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 high-performance analog and mixed-signal ICs for automotive, industrial, and communications markets with emphasis on reliability and integration.
The MAX20002/MAX20003 product line targets automotive power management, delivering fully integrated, AEC-Q100-qualified buck converters that simplify design of robust, low-EMI DC-DC supplies for harsh environments.
FAQ
What is the maximum input voltage the MAX20002DATPA/V+T can withstand during load-dump events?
The MAX20002DATPA/V+T supports up to 42V on the SUP and SUPSW pins during load-dump transients, as specified in its Absolute Maximum Ratings. This 42V rating is validated per ISO 7637-2 Pulse 5a requirements and enables direct connection to automotive battery rails without external TVS clamping in most applications. The device remains functional and undamaged during these events, ensuring system uptime in real-world vehicle environments.
Does the MAX20002DATPA/V+T require an external bias supply, or does it generate its own internal bias voltage?
The MAX20002DATPA/V+T includes an integrated 5V linear regulator (BIAS pin) that powers internal circuitry, eliminating the need for an external bias supply. When the output voltage is set between 3V and 5V, the OUT pin also supplies current to the BIAS regulator during standby mode. A minimum 2.2µF ceramic capacitor must be placed between BIAS and AGND to ensure stability and noise immunity for the internal analog blocks.
How does the MAX20002DATPA/V+T achieve ultra-low quiescent current, and what is its typical value in standby mode?
The MAX20002DATPA/V+T achieves 15µA typical quiescent current in standby mode (no load, fixed 3.3V output) through optimized gate-drive circuitry, adaptive biasing, and deep-sleep logic states. This value is measured with VFSYNC = 0V (skip mode enabled) and is confirmed across -40°C to +125°C. At 5V output, quiescent current rises slightly to 20µA typical, remaining well below industry benchmarks for automotive always-on applications.
Can the MAX20002DATPA/V+T operate in dropout, and what is its maximum duty cycle?
Yes, the MAX20002DATPA/V+T operates in dropout with a maximum duty cycle of 99%, allowing regulation even when input voltage approaches the output voltage. This behavior is achieved by forcing the low-side MOSFET on for 150ns every 12µs once off-time falls below 100ns - a feature critical for sustaining power during automotive cold-crank events (e.g., 6V input at 5V output). The device maintains PGOOD assertion and regulation accuracy throughout dropout operation.
What package type and thermal characteristics does the MAX20002DATPA/V+T use, and how should the exposed pad be handled?
The MAX20002DATPA/V+T uses a 5mm × 5mm, 20-pin TQFN package with exposed pad (EP). Its junction-to-ambient thermal resistance (θJA) is 30°C/W on a standard 4-layer JEDEC board. The EP must be soldered to a large, low-thermal-resistance copper pour connected to PGND - not used as the sole ground connection. Proper EP layout is essential to maintain ≤125°C junction temperature at full 2A load in +70°C ambient.
MAX20002DATPA/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
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- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX20002DATPA/V+T FAQ
1.How can I place an order for MAX20002DATPA/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20002DATPA/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 MAX20002DATPA/V+T reliable?
The price and inventory of MAX20002DATPA/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 MAX20002DATPA/V+T is usually 5 days.
3.What payment methods are accepted for MAX20002DATPA/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20002DATPA/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20002DATPA/V+T?
MAX20002DATPA/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20002DATPA/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 MAX20002DATPA/V+T?
For technical support, including MAX20002DATPA/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20002DATPA/V+T requirements.
6.How does Aetrix verify that MAX20002DATPA/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20002DATPA/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 MAX20002DATPA/V+T meets industry standards.
7.What is the process for return or replacement of MAX20002DATPA/V+T?
All MAX20002DATPA/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20002DATPA/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 MAX20002DATPA/V+T part is unused and in its original packaging.
Return procedure for MAX20002DATPA/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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