My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX20002CATPA/V+
- Part No.:
- MAX20002CATPA/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX20002CATPA/V+.pdf
- Description:
- IC REG BUCK PROG/1V 2A 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:109
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX20002CATPA/V+ from Maxim Integrated is a 2A, 36V 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, 15µA quiescent current in skip mode, and AEC-Q100 qualification for automotive power rails.
For engineers reviewing the MAX20002CATPA/V+ datasheet, MAX20002CATPA/V+ pinout, MAX20002CATPA/V+ application, or MAX20002CATPA/V+ equivalent, key selection criteria include its 99% dropout duty cycle, ±2% fixed-output accuracy, 220kHz–2.2MHz resistor-programmable switching frequency, spread-spectrum enable for EMC compliance, and 20-pin TQFN package with exposed pad.
Technical Context
The MAX20002CATPA/V+ implements current-mode control with internal transconductance error amplifier (700µS), programmable oscillator (via FOSC pin), and dual-mode operation-forced PWM (fixed-frequency) or skip mode-selected via FSYNC logic level. It features cycle-by-cycle current limiting, thermal shutdown at 175°C with 15°C hysteresis, and overvoltage protection monitoring the FB pin at 107% VFB.
Its dual-supply architecture separates SUP (bias regulator input) and SUPSW (high-side switch supply), enabling robust cold-crank operation down to 3.5V. The BIAS linear regulator delivers 4.7–5.4V at up to 10mA, powering internal circuitry and supporting automatic switchover to buck output when VOUT is 3V–5V in skip mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2A continuous - supports automotive point-of-load rails for 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 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 trade-off between inductor size (higher fSW → smaller L) and efficiency (lower fSW → lower switching loss). |
| Output Accuracy | ±2% for fixed 5V/3.3V outputs - ensures reliable MCU, sensor, and interface IC supply within tight tolerance bands. |
| Duty Cycle Max | 99% - sustains regulation during deep undervoltage transients, critical for engine start-stop and battery recovery scenarios. |
| PGOOD Threshold | 95% rising / 92.5% falling VFB - provides precise, debounced power-good signaling for safe system sequencing and fault detection. |
Pinout & Package
MAX20002CATPA/V+ is housed in a 5mm × 5mm, 20-pin TQFN package with exposed pad (EP), optimized for thermal dissipation in automotive under-hood environments. The EP must be soldered to a large-area contiguous copper ground plane and connected to PGND - it is not a standalone ground connection.
| 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; powers internal circuitry via BIAS switchover when VOUT = 3.3V/5V in skip mode. |
| FB | Feedback input | Connects to resistive divider (for 1V–10V) or directly to BIAS (for fixed 5V/3.3V); regulates output with ±1% FB accuracy. |
| COMP | Error amplifier output | External RC compensation network stabilizes current-mode loop; placement critical for transient response and phase margin. |
| BIAS | Internal LDO output | 5V ±0.3V linear regulator output; powers internal logic and gate drivers; requires ≥2.2µF ceramic bypass to AGND. |
| EN | Enable control | High-voltage compatible (3.5V–42V); enables/disables converter; 2.4V threshold ensures compatibility with KL30/KL15 automotive rails. |
| SUPSW | High-side switch supply | Separate input for high-side driver; bypassed with 0.1µF + 4.7µF ceramics to PGND for low-impedance gate drive. |
| SUP | Main supply input | Powers internal bias regulator; bypassed with 2.2µF ceramic to PGND; supports full 3.5V–36V VIN range. |
| PGOOD | Open-drain status output | Asserts high when VOUT ≥95% of target; used for power sequencing, reset generation, and fault reporting. |
| SPS | Spread-spectrum control | Logic-high enables ±3% triangular frequency modulation - reduces peak EMI without altering average fSW. |
| LX (pins 16–18) | Switching node | Connects to inductor; carries high di/dt; requires short, low-inductance layout to minimize ringing and EMI. |
| PGND (pins 13–14) | Power ground return | Low-impedance return path for high-current LX and SUPSW paths; separate from AGND to avoid noise coupling. |
| BST | Bootstrap supply | Connected via 0.1µF capacitor between BST and LX; supplies gate drive voltage for high-side MOSFET. |
| FSYNC | Sync mode select | Ground = skip mode; BIAS or external clock = forced PWM; enables synchronization to system clock for EMI reduction. |
| AGND | Analog reference ground | Reference for FB, COMP, FOSC, SPS, FSYNC; must be star-connected to PGND at single point near IC. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade A qualification | Rated for -40°C to +125°C junction temperature - validated for under-hood automotive deployment with zero derating. |
| Integrated high- and low-side MOSFETs | RON_H = 60–140mΩ / RON_L = 35–70mΩ - eliminates external FETs and gate drivers, reducing BOM count and PCB area by >30%. |
| Programmable spread spectrum | ±3% triangular modulation centered on fSW - lowers peak radiated emissions by up to 10dB without compromising regulation or efficiency. |
| 42V load-dump protection | Withstands ISO 7637-2 Pulse 5a transients - no external TVS required for basic automotive surge immunity. |
| Fixed 8ms soft-start | Internally controlled ramp - prevents inrush current, eliminates need for external soft-start timing components. |
| PGOOD with 25µs debounce | Digital-ready open-drain output - interfaces directly with microcontroller GPIO or PMIC sequencers without external filtering. |
Applications
| Navigation & Radio Head Units | ADAS Camera Power Rails |
|---|---|
|
Use Scenario: Powering 5V/3.3V rails for display controllers, audio codecs, and RF tuners in automotive head units subject to cold crank and load dump. IC Role / Device Role / Timing Role: Primary step-down regulator supplying stable, low-noise DC power with fast transient response to dynamic multimedia loads. Use Value: 99% duty cycle maintains regulation during 6V cold crank; PGOOD enables safe boot sequencing; spread spectrum meets CISPR 25 Class 5 EMC limits. |
Use Scenario: Generating clean 3.3V for CMOS image sensors and ISP processors in forward-facing cameras requiring ultra-low EMI. IC Role / Device Role / Timing Role: High-efficiency, low-quiescent buck converter with synchronized PWM mode to suppress switching noise near sensitive analog video paths. Use Value: 2.2MHz operation minimizes inductor size and avoids AM band interference; ±2% output accuracy ensures sensor ADC reference stability. |
| Body Control Modules (BCM) | Telematics Control Units (TCU) |
|
Use Scenario: Supplying 5V to microcontrollers, LIN transceivers, and relay drivers in BCMs operating across wide ambient temperatures. IC Role / Device Role / Timing Role: Robust primary DC-DC converter with integrated protection (OVP, thermal shutdown, current limit) for unregulated 12V battery input. Use Value: AEC-Q100 qualification and -40°C to +125°C operation ensure reliability in engine bay mounting; 15µA skip-mode current extends battery life in sleep states. |
Use Scenario: Providing isolated 3.3V/5V rails for cellular modems, GNSS receivers, and CAN FD controllers in always-connected TCUs. IC Role / Device Role / Timing Role: System power manager enabling low-power wake-on-CAN while maintaining fast startup (<8ms) for emergency telematics events. Use Value: EN pin compatible with KL30 battery rail; fast 8ms soft-start ensures modem readiness within latency budget; PGOOD confirms rail integrity before firmware boot. |
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, 12µA IQ, but no integrated spread spectrum or AEC-Q100 qualification. | Targeted at industrial/commercial DC/DC; lacks automotive-grade transient immunity and EMC features. | Select when higher current (4A) is needed and automotive qualification is not required. |
| TPS62933RTER | 3V–36V input, 3A output, 15µA IQ, AEC-Q100 qualified, but fixed 2.1MHz fSW (no resistor programming). | Optimized for space-constrained designs where frequency flexibility is secondary to footprint and thermal performance. | Prefer when board space is critical and fixed 2.1MHz operation satisfies EMI and inductor size requirements. |
Compared with LM61480RQR and TPS62933RTER, MAX20002CATPA/V+ uniquely combines AEC-Q100 qualification, resistor-programmable frequency (220kHz–2.2MHz), and integrated spread spectrum - making it the only choice for automotive applications demanding both design flexibility and certified EMC robustness.
Availability
MAX20002CATPA/V+ is available at Aetrix Electronics and suitable for automotive navigation systems, ADAS camera modules, body control units, and telematics control units requiring stable component supply with full AEC-Q100 traceability and long-term production support.
Supply support for MAX20002CATPA/V+ 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) is a semiconductor leader specializing in high-performance analog, mixed-signal, and power management ICs for automotive, industrial, and communications markets.
The MAX20002/MAX20003 family was designed specifically for automotive power conversion - delivering high efficiency, ultra-low IQ, and comprehensive protection in compact TQFN packages for harsh-environment point-of-load applications.
FAQ
What is the maximum input voltage the MAX20002CATPA/V+ can withstand during load dump events?
The MAX20002CATPA/V+ supports 42V load-dump transients per ISO 7637-2 Pulse 5a, with absolute maximum rating of 42V on SUP and SUPSW pins for <1s duration. This eliminates the need for external TVS diodes in most automotive front-end designs, simplifying protection circuitry while maintaining reliability under harsh battery conditions.
Does the MAX20002CATPA/V+ support adjustable output voltage, and what is the accuracy?
Yes, the MAX20002CATPA/V+ supports output voltages from 1V to 10V using an external resistive divider on the FB pin, with ±1% feedback accuracy. When configured for fixed 5V or 3.3V outputs (by connecting FB to BIAS), it achieves ±2% output accuracy across line, load, and temperature - meeting stringent requirements for MCU and sensor power rails.
How does the MAX20002CATPA/V+ manage electromagnetic compatibility (EMC)?
The MAX20002CATPA/V+ integrates spread-spectrum modulation (±3% triangular) enabled via the SPS pin, reducing peak radiated emissions without affecting average frequency or regulation. Combined with resistor-programmable switching frequency (220kHz–2.2MHz) and forced PWM mode via FSYNC, it enables systematic EMI mitigation aligned with CISPR 25 Class 5 automotive standards.
What is the purpose of the dual supply inputs SUP and SUPSW on the MAX20002CATPA/V+?
SUP powers the internal bias regulator, while SUPSW independently supplies the high-side gate driver. This separation ensures stable gate drive even during cold-crank events when main battery voltage drops below the output voltage - enabling 99% duty-cycle operation and uninterrupted regulation critical for automotive safety systems.
Is the MAX20002CATPA/V+ pin-compatible with other variants in the MAX20002/MAX20003 family?
Yes, all MAX20002 and MAX20003 variants - including MAX20002CATPA/V+, MAX20002EATPA/V+, MAX20003CATPD/V+ - share identical 20-pin TQFN pinout and footprint. This enables scalable design reuse: upgrade current capability (2A → 3A) or add enhanced filtering (E-grade) without PCB redesign or layout changes.
MAX20002CATPA/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN Exposed Pad
- Packaging:
- Strip
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX20002CATPA/V+ FAQ
1.How can I place an order for MAX20002CATPA/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20002CATPA/V+ 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 MAX20002CATPA/V+ reliable?
The price and inventory of MAX20002CATPA/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20002CATPA/V+ is usually 5 days.
3.What payment methods are accepted for MAX20002CATPA/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20002CATPA/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20002CATPA/V+?
MAX20002CATPA/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20002CATPA/V+ 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 MAX20002CATPA/V+?
For technical support, including MAX20002CATPA/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20002CATPA/V+ requirements.
6.How does Aetrix verify that MAX20002CATPA/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20002CATPA/V+ 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 MAX20002CATPA/V+ meets industry standards.
7.What is the process for return or replacement of MAX20002CATPA/V+?
All MAX20002CATPA/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20002CATPA/V+, 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 MAX20002CATPA/V+ part is unused and in its original packaging.
Return procedure for MAX20002CATPA/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX20002CATPA/V+ 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…
