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Analog Devices Inc./Maxim Integrated MAX20002EATPB/VY+
- Part No.:
- MAX20002EATPB/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX20002EATPB/VY+.pdf
- Description:
- IC REG BUCK PROG/1V 2A 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:840
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Product details
Overview
MAX20002EATPB/VY+ from Maxim Integrated is a 2A synchronous buck converter with integrated high-side and low-side MOSFETs, operating from 3.5V to 36V input, delivering fixed 5V/3.3V or adjustable 1V–10V output, featuring 15µA quiescent current in skip mode and AEC-Q100 qualification for automotive power rails.
For engineers reviewing the MAX20002EATPB/VY+ datasheet, MAX20002EATPB/VY+ pinout, MAX20002EATPB/VY+ application, or MAX20002EATPB/VY+ equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade protection features (42V load-dump, -40°C to +125°C), and real-world design trade-offs between forced-PWM and skip mode operation.
Technical Context
The MAX20002EATPB/VY+ implements current-mode control with internal transconductance error amplifier (700µS), resistor-programmable oscillator (220kHz–2.2MHz via FOSC pin), and dual-supply architecture (SUP/SUPSW) enabling robust cold-crank operation down to 3.5V input while maintaining 98% maximum duty cycle.
It integrates a 5V BIAS linear regulator (±2% accuracy, 4.7–5.4V), open-drain PGOOD with 92.5–95% regulation window, spread-spectrum enable (±3% frequency modulation), and overvoltage protection triggered at 107% FB voltage - all qualified per AEC-Q100 Grade 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2A continuous - supports automotive point-of-load rails 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 transient). |
| Quiescent Current | 15µA in skip mode - enables always-on systems (e.g., CAN wake-up circuits) with minimal battery drain. |
| Switching Frequency | 220kHz to 2.2MHz (resistor-programmable) - allows optimization of inductor size vs. EMI vs. efficiency. |
| Output Accuracy | ±2% for fixed 5V/3.3V outputs - ensures reliable logic-level compliance for MCU, sensor, and infotainment subsystems. |
| Thermal Protection | 175°C shutdown with 15°C hysteresis - prevents thermal runaway during sustained overload or poor PCB heatsinking. |
| PGOOD Threshold | 95% rising / 92.5% falling VFB - provides precise power-rail sequencing margin for downstream processors. |
Pinout & Package
MAX20002EATPB/VY+ uses a 20-pin 5mm × 5mm TQFN package with exposed pad (EP), RoHS-compliant, thermal resistance θJA = 30°C/W on 4-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FOSC | Frequency-setting input | Connect resistor to AGND to set switching frequency from 220kHz to 2.2MHz - direct control of EMI profile and magnetics sizing. |
| OUT | Power output node | Delivers regulated DC output; powers internal circuitry when VOUT ≥ 3V in skip mode - eliminates need for separate bias supply. |
| FB | Feedback reference input | Accepts resistive divider (1V reference) for 1V–10V adjustment or connects directly to BIAS for fixed 5V/3.3V - ±1% FB accuracy enables tight output tolerance. |
| COMP | Error amplifier output | External RC compensation network interface - stabilizes current-mode loop across line/load/temp variations. |
| BIAS | Integrated 5V LDO output | Powers internal analog blocks; requires ≥2.2µF ceramic bypass - decouples noise-sensitive control circuitry from switching node. |
| EN | High-voltage enable input | Logic-compatible with 3.5V–36V supply rails; 2.4V threshold enables direct connection to KL30 or CAN transceiver INH - simplifies system-level power sequencing. |
| PGOOD | Open-drain status output | Asserts high when VOUT > 95% regulation; sinks 5mA max - drives microcontroller reset or power-good interrupt with built-in debounce (25µs). |
| SPS | Spread-spectrum control | Pull high to enable ±3% triangular frequency modulation - reduces peak EMI by spreading energy across spectrum without altering average fSW. |
| LX (pins 16–18) | Switching node | Drives external inductor; three parallel pins reduce current density and parasitic inductance - critical for high-efficiency 2A operation at 2.2MHz. |
| PGND (pins 13–14) | Power ground return | Dedicated low-impedance path for high di/dt currents - separates noisy power return from sensitive analog ground (AGND) to prevent coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with integrated FETs | Eliminates external MOSFETs and gate drivers - reduces BOM count, layout area, and thermal complexity for space-constrained automotive modules. |
| 98% maximum duty cycle | Enables operation during undervoltage transients (e.g., cold crank) with minimal dropout - maintains 5V rail stability even as input drops to ~5.1V (for 5V output). |
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation - meets automotive electronics reliability requirements for engine bay and infotainment applications. |
| 42V load-dump protection | Withstands ISO 7637-2 Pulse 5a transients without latch-up or damage - removes need for external TVS clamping in front-end power stages. |
| Fixed 8ms soft-start | Prevents inrush current into bulk output capacitance - avoids tripping upstream fuses or causing supply sag in multi-rail systems. |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Powers SoC, display driver, and audio codec in head-unit with variable load (100mA–2A) and strict EMC limits. IC Role / Device Role / Timing Role: Primary 5V/3.3V step-down regulator with spread-spectrum enabled to meet CISPR-25 Class 5 radiated emissions. Use Value: 15µA quiescent current extends battery life in accessory-off state; 2.2MHz operation minimizes inductor footprint for compact head-unit PCB. |
Use Scenario: Supplies image sensor and ISP in rear-view camera module exposed to wide temperature swings (-40°C to +105°C). IC Role / Device Role / Timing Role: Single-chip 3.3V buck converter with AEC-Q100 qualification and 42V transient immunity for under-hood mounting. Use Value: Integrated high-/low-side FETs eliminate discrete gate drive design; 98% duty cycle sustains output during cold-crank events below 6V input. |
| Body Control Module (BCM) Core Rail | Telematics Control Unit (TCU) Subsystem |
|
Use Scenario: Generates stable 5V rail for microcontroller, CAN transceiver, and LIN interface in door module with intermittent loads. IC Role / Device Role / Timing Role: Always-on buck regulator with EN pin tied to KL30; PGOOD signals MCU when rail is valid after wake-up. Use Value: 5µA shutdown current prevents battery drain during vehicle sleep; PGOOD's 92.5–95% window ensures deterministic power sequencing. |
Use Scenario: Provides isolated 3.3V supply for cellular modem and GNSS receiver in telematics gateway with aggressive EMI targets. IC Role / Device Role / Timing Role: Synchronized buck (FSYNC tied to system clock) operating in forced-PWM mode to avoid beat frequencies with RF bands. Use Value: External clock synchronization eliminates variable-frequency noise; 220kHz–2.2MHz range allows tuning to avoid LTE/GNSS interference bands. |
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 spread-spectrum or AEC-Q100 qualification. | Targets industrial PoL where automotive qualification is not required; lacks PGOOD accuracy spec (±5% vs. ±2.5% for MAX20002EATPB/VY+). | Select LM61480RQR only if higher current headroom and lower IQ are prioritized over automotive compliance and EMI control. |
| TPS54240DGQR | 3.5V–42V input, 2A output, 110µA IQ, no integrated FETs (external MOSFETs required), no AEC-Q100. | Suitable for cost-sensitive non-automotive designs; requires external high-side/low-side FETs and gate drivers - increases layout complexity and BOM count. | Choose TPS54240DGQR only when budget constraints outweigh integration benefits and automotive qualification is unnecessary. |
Compared with LM61480RQR and TPS54240DGQR, MAX20002EATPB/VY+ uniquely combines AEC-Q100 Grade 1, integrated spread-spectrum, 15µA skip-mode IQ, and 5mm×5mm TQFN packaging - making it the only drop-in solution for space-constrained, EMC-sensitive automotive subsystems requiring guaranteed qualification and minimal external components.
Availability
MAX20002EATPB/VY+ is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and body control units requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for MAX20002EATPB/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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, medical, and automotive applications.
The MAX20002/MAX20003 product line delivers fully integrated, AEC-Q100-qualified buck converters optimized for automotive power rails - emphasizing ultra-low IQ, wide VIN range, and robust transient immunity in compact packages.
FAQ
What is the maximum duty cycle supported by the MAX20002EATPB/VY+?
The MAX20002EATPB/VY+ supports up to 98% maximum duty cycle (typical), enabling operation during automotive cold-crank events where input voltage drops near the output level. This capability is implemented via cycle-by-cycle off-time monitoring and forced low-side conduction, allowing the device to sustain regulated output even when VSUP approaches VOUT + (ILX × RON_H).
Does the MAX20002EATPB/VY+ require external MOSFETs?
No, the MAX20002EATPB/VY+ integrates both high-side and low-side MOSFETs internally - eliminating the need for external switches, gate drivers, or associated passive components. Its 60mΩ high-side and 35mΩ low-side RDS(on) (typ) are specified at VBIAS = 5V and ILX = 0.5A, enabling efficient 2A operation in the 5mm × 5mm TQFN package.
How does the PGOOD output of the MAX20002EATPB/VY+ behave during startup and fault conditions?
The MAX20002EATPB/VY+ PGOOD output asserts high when VOUT rises above 95% of its regulation voltage and deasserts low when VOUT falls below 92.5%. It features 25µs internal debounce and open-drain structure, requiring an external pull-up to BIAS or VOUT. During startup, PGOOD remains low until soft-start completes (~8ms) and regulation is achieved.
Can the MAX20002EATPB/VY+ be synchronized to an external clock?
Yes, the MAX20002EATPB/VY+ supports external synchronization via the FSYNC pin. When driven with a logic-level clock signal (1.8–2.6MHz for 2.2MHz internal setting), the device locks to the external source within two cycles. FSYNC must not be left floating; tie to AGND for skip mode or to BIAS/external clock for forced-PWM operation.
Is the MAX20002EATPB/VY+ qualified for automotive use?
Yes, the MAX20002EATPB/VY+ is AEC-Q100 Grade 1 qualified (-40°C to +125°C ambient), includes 42V load-dump protection, operates from 3.5V to 36V input, and features thermal shutdown (175°C) with hysteresis - meeting core requirements for automotive power conversion in infotainment, ADAS, and body electronics.
MAX20002EATPB/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN Exposed Pad
- Packaging:
- Tube
- 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 (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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX20002EATPB/VY+ FAQ
1.How can I place an order for MAX20002EATPB/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20002EATPB/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 MAX20002EATPB/VY+ reliable?
The price and inventory of MAX20002EATPB/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20002EATPB/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20002EATPB/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20002EATPB/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20002EATPB/VY+?
MAX20002EATPB/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20002EATPB/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 MAX20002EATPB/VY+?
For technical support, including MAX20002EATPB/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20002EATPB/VY+ requirements.
6.How does Aetrix verify that MAX20002EATPB/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20002EATPB/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 MAX20002EATPB/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20002EATPB/VY+?
All MAX20002EATPB/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20002EATPB/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 MAX20002EATPB/VY+ part is unused and in its original packaging.
Return procedure for MAX20002EATPB/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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