My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX20003ATPA/V+TC2
- Part No.:
- MAX20003ATPA/V+TC2
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX20003ATPA/V+TC2.pdf
- Description:
- IC REG BUCK PROG/1V 3A 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,588
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX20003ATPA/V+TC2 from Maxim Integrated is a 3A 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 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 MAX20003ATPA/V+TC2 datasheet, MAX20003ATPA/V+TC2 pinout, MAX20003ATPA/V+TC2 application, or MAX20003ATPA/V+TC2 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% max duty cycle), and real-world design implications for point-of-load and navigation system power supplies.
Technical Context
This device implements current-mode control with internal transconductance error amplifier (700µS), fixed 8ms 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 during cold-crank transients down to 3.5V.
The IC supports three operational modes: forced PWM (via FSYNC tied to BIAS or external clock), skip mode (FSYNC to AGND), and spread-spectrum modulation (SPS high, ±3% frequency dither). Overvoltage protection triggers at 107% of FB voltage, with fast recovery optimized for automotive transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 3A continuous - supports automotive infotainment and ADAS subsystems without external current boosting. |
| 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 functionality in vehicle body control modules with minimal battery drain. |
| 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 Options | Fixed 3.3V/5V (±2%) or adjustable 1V–10V (±1% FB accuracy) - supports diverse SoC, MCU, and sensor rail requirements from one platform. |
| Thermal Protection | 175°C shutdown with 15°C hysteresis - prevents thermal runaway in enclosed automotive enclosures without manual reset. |
| AEC-Q100 Grade | Grade -40°C to +125°C - qualified for under-hood and dashboard-mounted applications per automotive reliability standard. |
Pinout & Package
MAX20003ATPA/V+TC2 is housed in a 5mm × 5mm, 20-pin TQFN package with exposed pad (EP), optimized for thermal dissipation in high-power-density automotive PCBs. The package uses RoHS-compliant lead finish and supports JEDEC-standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FOSC | Frequency-setting input | Resistor-to-AGND sets switching frequency (220kHz–2.2MHz); determines inductor sizing and EMI profile. |
| OUT | Power output node | Delivers regulated DC output; also powers internal circuitry when VOUT ≥ 3V in skip mode after BIAS switchover. |
| FB | Feedback reference input | Connects to resistive divider for adjustable output (1V–10V) or to BIAS for fixed 3.3V/5V; ±1% regulation accuracy. |
| COMP | Error amplifier output | External RC compensation network stabilizes current-mode loop; critical for transient response and phase margin. |
| BIAS | Internal 5V linear regulator output | Powers internal analog blocks; requires ≥2.2µF ceramic bypass to AGND for noise immunity and startup 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 | Dedicated input for gate driver; bypassed separately (0.1µF + 4.7µF) to minimize switching noise coupling into bias domain. |
| SUP | Main supply input | Powers internal LDO; bypassed with 2.2µF ceramic to PGND; decoupled from SUPSW to isolate power domains. |
| PGOOD | Open-drain power-good signal | Asserts when VOUT > 95% of target; deasserts at <92.5%; used for sequencing microcontrollers and downstream regulators. |
| SPS | Spread-spectrum enable | Pull-high enables ±3% triangular dither (110µs period at 2.2MHz); reduces peak EMI without altering average frequency. |
| LX (pins 16–18) | Switching node | Connects to inductor; carries high di/dt current; requires tight layout and Kelvin connection to minimize ringing and losses. |
| PGND (pins 13–14) | Power ground return | Separate from AGND; must connect directly to EP and high-current paths; avoids noise injection into sensitive analog circuits. |
| EP | Exposed thermal pad | Mandatory connection to large copper pour on PCB layer; primary thermal path (θJC = 2°C/W); not sole ground reference. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3A power stage | 60mΩ high-side + 35mΩ low-side MOSFETs reduce conduction loss and eliminate external FET selection, layout, and gate-drive complexity. |
| Automotive-grade protection suite | 42V load-dump tolerance, cycle-by-cycle current limit, overtemperature shutdown (175°C), and fast OVP (107% FB) ensure robustness in harsh environments. |
| Ultra-low IQ skip mode | 15µA no-load current extends battery life in always-on systems such as telematics and remote keyless entry modules. |
| Flexible frequency control | Resistor-programmable fSW (220kHz–2.2MHz) plus external synchronization (FSYNC) enables EMI compliance across multiple board designs and regulatory regions. |
| Programmable spread spectrum | SPS pin enables ±3% frequency dither without external components - lowers peak radiated emissions by up to 10dB without sacrificing average performance. |
Applications
| Infotainment Power Supply | ADAS Camera Module Rail |
|---|---|
|
Use Scenario: Powers SoC, display controller, and audio codec in automotive head units with variable battery voltage and strict EMC limits. IC Role / Device Role / Timing Role: Primary 5V/3.3V step-down regulator with PGOOD sequencing and spread-spectrum EMI reduction. Use Value: Enables single-chip solution for multi-rail generation while meeting CISPR-25 Class 5 radiated emissions without added shielding. |
Use Scenario: Supplies image sensor and ISP in forward-facing camera modules requiring stable 1.8V or 2.8V rails under engine vibration and temperature cycling. IC Role / Device Role / Timing Role: Adjustable-output buck converter with 99% dropout capability for cold-crank resilience and ±1% FB accuracy for sensor ADC reference stability. Use Value: Eliminates need for post-regulation LDOs by delivering precise, low-noise output directly from battery, reducing BOM count and thermal load. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
|
Use Scenario: Provides always-on 3.3V rail for microcontroller and CAN transceiver in door modules and lighting controllers. IC Role / Device Role / Timing Role: Low-IQ buck converter with shutdown current ≤10µA and EN compatible with KL30 battery line. Use Value: Maintains <100µA total system standby current, satisfying OEM requirements for 10-year battery life in parked vehicle state. |
Use Scenario: Generates 5V and 3.3V rails for cellular modem, GNSS receiver, and secure element in connected vehicle gateways. IC Role / Device Role / Timing Role: Dual-rail capable buck with AEC-Q100 qualification, 42V load-dump protection, and PGOOD-driven firmware initialization sequence. Use Value: Reduces footprint vs. discrete solutions while ensuring functional safety compliance (ASIL-B ready via diagnostic PGOOD and thermal flag). |
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, but no integrated spread-spectrum or AEC-Q100 qualification. | Targeted at industrial/commercial DC/DC; lacks automotive-specific protections (e.g., 42V load-dump rating). | Select when higher output current is required and automotive qualification is not mandated. |
| TPS62933RTER | 3V–36V input, 3A output, 12µA IQ, AEC-Q100 Grade 1, but fixed 2.1MHz fSW only (no resistor programming). | Optimized for compact space-constrained designs; lacks frequency flexibility and programmable spread-spectrum. | Prefer when board area is critical and fixed high-frequency operation suffices for EMI management. |
Compared with LM61480RQWR and TPS62933RTER, MAX20003ATPA/V+TC2 uniquely combines AEC-Q100 Grade 0 qualification, resistor-programmable frequency, integrated spread-spectrum, and 42V load-dump protection - making it the only choice for cost-sensitive, thermally constrained automotive front-end power stages requiring full transient resilience.
Availability
MAX20003ATPA/V+TC2 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and body control units requiring stable component supply with guaranteed long-term automotive lifecycle support.
Supply support for MAX20003ATPA/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.
MAX20003ATPA/V+TC2 belongs to the MAX2000x automotive power-management family, engineered specifically for high-reliability, wide-input DC/DC conversion in demanding vehicular environments - emphasizing low IQ, transient resilience, and EMI control.
FAQ
What is the maximum duty cycle supported by MAX20003ATPA/V+TC2?
MAX20003ATPA/V+TC2 supports up to 99% maximum duty cycle, enabling operation during severe undervoltage conditions like cold-crank (down to 3.5V input). This is achieved by forcing the low-side FET on for 150ns every 12µs once off-time drops below 100ns - maintaining regulation even when VIN approaches VOUT. The exact dropout point depends on RON_H, load, and efficiency, but the IC guarantees functional operation at 99% duty cycle per datasheet specification.
Does MAX20003ATPA/V+TC2 require external compensation components?
Yes, MAX20003ATPA/V+TC2 requires an external RC network from COMP to AGND for loop stability. The internal transconductance error amplifier (700µS) relies on user-selected compensation to achieve adequate phase margin across load and input voltage ranges. Typical designs use a series RC (e.g., 10kΩ + 1nF) plus optional feedforward capacitor; compensation values depend on selected inductor, output capacitor, and switching frequency - detailed guidance is provided in the datasheet's Compensation Network section.
Can MAX20003ATPA/V+TC2 be synchronized to an external clock?
Yes, MAX20003ATPA/V+TC2 supports external synchronization via the FSYNC pin. When driven with a logic-level clock signal (1.8MHz–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, BIAS for forced-PWM, or a clean external clock for synchronization. Spread-spectrum is automatically disabled when FSYNC is active.
What is the purpose of the separate SUP and SUPSW pins on MAX20003ATPA/V+TC2?
SUP and SUPSW provide independent power domains: SUP feeds the internal 5V BIAS regulator, while SUPSW directly powers the high-side gate driver. This separation isolates sensitive analog circuitry from high di/dt switching noise, improves cold-crank performance (SUPSW can remain active even if SUP dips), and enables optimized bypassing - SUP requires 2.2µF to PGND, while SUPSW needs both 0.1µF and 4.7µF ceramics to suppress broadband noise.
Is MAX20003ATPA/V+TC2 qualified for automotive under-hood applications?
Yes, MAX20003ATPA/V+TC2 is AEC-Q100 qualified for Grade 0 (-40°C to +125°C ambient), with junction temperature rated to +150°C and thermal shutdown at +175°C. It includes 42V load-dump protection, operates down to 3.5V input, and features robust ESD (±2kV HBM) and EMC capabilities - making it suitable for under-hood ECUs, transmission control units, and other high-temperature automotive locations where reliability is mission-critical.
MAX20003ATPA/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:
- 3A
- 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)
MAX20003ATPA/V+TC2 FAQ
1.How can I place an order for MAX20003ATPA/V+TC2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20003ATPA/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 MAX20003ATPA/V+TC2 reliable?
The price and inventory of MAX20003ATPA/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 MAX20003ATPA/V+TC2 is usually 5 days.
3.What payment methods are accepted for MAX20003ATPA/V+TC2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20003ATPA/V+TC2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20003ATPA/V+TC2?
MAX20003ATPA/V+TC2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20003ATPA/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 MAX20003ATPA/V+TC2?
For technical support, including MAX20003ATPA/V+TC2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20003ATPA/V+TC2 requirements.
6.How does Aetrix verify that MAX20003ATPA/V+TC2 is sourced from the original manufacturer or authorized distributors?
All MAX20003ATPA/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 MAX20003ATPA/V+TC2 meets industry standards.
7.What is the process for return or replacement of MAX20003ATPA/V+TC2?
All MAX20003ATPA/V+TC2 units undergo pre-shipment inspection (PSI). If there is an issue with MAX20003ATPA/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 MAX20003ATPA/V+TC2 part is unused and in its original packaging.
Return procedure for MAX20003ATPA/V+TC2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX20003ATPA/V+TC2 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
