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Analog Devices Inc./Maxim Integrated MAX20071ATAB/V+T
- Part No.:
- MAX20071ATAB/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
MAX20071ATAB/V+T.pdf
- Description:
- IC REG BUCK ADJ 600MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,639
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Product details
Overview
MAX20071ATAB/V+T from Analog Devices is a 600mA, 2.2MHz automotive-grade step-down DC-DC converter in an 8-pin TDFN-EP package. It delivers regulated output from 0.5V to 3.8V with ±1.5% accuracy over load, line, and temperature, operates from 3.0V–5.5V input, and integrates PGOOD, enable, and spread-spectrum oscillator for EMI reduction-used in automotive point-of-load power rails for ADAS sensors and infotainment SoCs.
For engineers reviewing the MAX20071ATAB/V+T datasheet, MAX20071ATAB/V+T pinout, MAX20071ATAB/V+T application, or MAX20071ATAB/V+T equivalent, key selection criteria include its 600mA current rating, factory-enabled spread-spectrum operation, -40°C to +125°C AEC-Q100 qualified operation, 0.85ms soft-start, and compatibility with all-ceramic capacitor designs at 2.2MHz switching frequency.
Technical Context
The MAX20071ATAB/V+T employs current-mode PWM control with fixed 2.2MHz switching frequency and integrated high-side (80–300mΩ) and low-side (50–200mΩ) MOSFETs. Its architecture supports both forced-PWM and pulse-skipping modes via SYNC pin control, enabling dynamic efficiency optimization across load ranges.
It features a 0.5V internal reference, factory-trimmed output voltage (adjustable variant), 107% OV / 93% UV monitoring on PGOOD, and thermal shutdown at +165°C with 15°C hysteresis-designed specifically for automotive post-regulation where compact size, high reliability, and EMI robustness are mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 600mA maximum continuous - sufficient for powering microcontrollers, camera ISPs, and CAN transceivers in automotive ECUs. |
| Switching Frequency | 2.2MHz ±10% - enables use of sub-2.2µH inductors and all-ceramic output capacitors, minimizing board area. |
| Input Voltage Range | 3.0V to 5.5V - compatible with 3.3V/5V automotive supply rails and battery-backed systems after LDO pre-regulation. |
| Output Voltage Accuracy | ±1.5% over load, line, and temperature - eliminates need for external 0.1% feedback resistors in production designs. |
| Soft-Start Time | Fixed 0.85ms - limits inrush current during power-up, preventing brownout in shared supply domains. |
| Operating Temperature | -40°C to +125°C ambient - meets AEC-Q100 Grade 1 requirements for under-hood and cabin-mounted electronics. |
| Spread Spectrum | Enabled (±3% frequency dither) - reduces peak EMI by spreading spectral energy, easing CISPR 25 Class 5 compliance. |
Pinout & Package
Package: 8-pin TDFN-EP (2mm × 2mm × 0.85mm) with exposed pad thermally connected to GND. RoHS-compliant, automotive-qualified (AEC-Q100).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 AV | Analog supply | Noise-filtered bias rail for internal reference and error amplifier; requires 1µF ceramic cap + 10Ω series resistor to PV. |
| 2 SYNC | Mode control input | Drives forced-PWM (high) or pulse-skipping (low/floating); enables dynamic efficiency tuning without firmware change. |
| 3 PGND | Power ground return | Low-impedance path for high di/dt switch node current; must be tied directly to EP and system GND plane. |
| 4 PV | Main power input | 3.0–5.5V supply input; requires ≥4.7µF X7R ceramic capacitor placed adjacent to pin for high-frequency decoupling. |
| 5 PG | Open-drain PGOOD | Active-low status flag asserting after 10µs delay when output deviates >7%; requires external pullup ≥2kΩ. |
| 6 LX | Switch node | Connection to inductor's switched side; carries high dv/dt pulses; must be routed short and wide to minimize EMI. |
| 7 EN | Enable input | Active-high logic control (VIH = 1.5V min); initiates 0.85ms soft-start on rising edge, full shutdown on falling edge. |
| 8 OUT | Feedback input | Connects to resistor divider (0.5V internal reference) for adjustable output; tied directly to output cap in fixed-voltage variants. |
| EP | Exposed thermal pad | Internally connected to GND; requires ≥3 thermal vias to inner ground planes for junction-to-ambient θJA = 85.3°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Spread-spectrum oscillator | ±3% frequency dither enabled - reduces conducted and radiated EMI peaks without altering loop dynamics. |
| Factory-trimmed output | Configured as adjustable variant with 0.5V reference - supports customer-defined VOUT from 0.5V to ~PV–0.5V using two external resistors. |
| Current-mode control | Internal slope compensation and cycle-by-cycle current limiting - ensures stable operation with wide inductor/ESR ranges and fast transient response. |
| Thermal protection | 165°C shutdown with 15°C hysteresis - prevents latch-up during sustained overload or poor heatsinking in confined enclosures. |
| Automotive qualification | AEC-Q100 Grade 1 compliant (/V suffix) - validated for -40°C to +125°C operation with robust HTOL, TC, and ESD performance. |
Applications
| ADAS Camera Power Rail | Infotainment SoC Core Supply |
|---|---|
Use Scenario: Powers image signal processor (ISP) and MIPI serializer in forward-facing ADAS camera module. IC Role / Device Role / Timing Role: Primary 1.2V/600mA point-of-load regulator delivering clean, low-noise power with fast transient response to handle burst-mode imaging. Use Value: ±1.5% output accuracy and 2.2MHz switching ensure stable ISP core voltage under varying pixel clock loads while meeting CISPR 25 EMI limits via spread spectrum. | Use Scenario: Supplies 1.1V core rail for automotive infotainment application processor (e.g., NXP i.MX8) during boot and active states. IC Role / Device Role / Timing Role: Post-regulator stepping down from 3.3V main rail; synchronized to system clock via SYNC pin to avoid beat frequencies. Use Value: Forced-PWM mode (SYNC high) guarantees deterministic 2.2MHz switching during video decode, eliminating audible noise and ensuring consistent power delivery timing. |
| Body Control Module MCU Supply | Automotive Gateway CAN Transceiver Bias |
Use Scenario: Provides 3.3V/600mA power to 32-bit ARM Cortex-M7 MCU in body control unit (BCU) with wake-on-LIN capability. IC Role / Device Role / Timing Role: Always-on auxiliary supply with ultra-low shutdown current (0.1µA typical) and precise enable sequencing via EN pin. Use Value: 0.85ms soft-start prevents reset glitches during cold cranking; -40°C to +125°C rating ensures reliable startup in extreme ambient conditions. | Use Scenario: Generates isolated 5V bias for high-speed CAN FD transceivers in vehicle gateway modules. IC Role / Device Role / Timing Role: Secondary regulator fed from 12V buck; uses PGOOD to validate output before enabling CAN controller I/O drivers. Use Value: 107% OV / 93% UV monitoring on PGOOD provides fail-safe power validation, critical for ISO 11898-2 bus integrity and fault reporting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20072ATAB/V+ | 1A output current, factory-set 1.2V output, same spread-spectrum and package | Higher current capacity; fixed 1.2V output eliminates external resistors but lacks adjustability | Select when design requires >600mA or standardized 1.2V rail without feedback network. |
| TPS62840DLCR | 600mA, 1.8–5.5V input, 0.6–3.3V output, 2.25MHz, no spread spectrum, lower IQ (300nA) | Optimized for ultra-low-power always-on circuits; lacks automotive qualification and PGOOD | Select for non-automotive portable or IoT applications prioritizing standby current over EMI robustness. |
Compared with MAX20072ATAB/V+, the MAX20071ATAB/V+T offers lower current but retains full adjustability and identical EMI mitigation; versus TPS62840DLCR, it trades ultra-low IQ for AEC-Q100 compliance, PGOOD, and spread-spectrum-making it suitable only for automotive environments demanding functional safety and EMC rigor.
Availability
MAX20071ATAB/V+T is available at Aetrix Electronics and suitable for automotive ADAS, infotainment, and body electronics requiring stable component supply, long-term lifecycle support, and AEC-Q100 qualified performance.
Supply support for MAX20071ATAB/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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.
The MAX20071/MAX20072 family is part of Analog Devices' automotive power management portfolio, designed specifically for compact, high-efficiency point-of-load regulation in safety-critical vehicle subsystems with stringent EMI and thermal constraints.
FAQ
What is the maximum output current capability of the MAX20071ATAB/V+T?
The MAX20071ATAB/V+T delivers up to 600mA of continuous output current. This rating is validated across the full -40°C to +125°C operating temperature range and accounts for thermal derating in the 8-pin TDFN-EP package. The device includes overcurrent limiting that clamps peak inductor current to protect against short-circuit events without latch-up.
Does the MAX20071ATAB/V+T support adjustable output voltage?
Yes, the MAX20071ATAB/V+T is the adjustable-output variant of the MAX20071 family. It uses an internal 0.5V reference and accepts an external resistor divider on the OUT pin to set VOUT anywhere from 0.5V to approximately PV–0.5V. The ordering code "ATAB" confirms this configuration, distinguishing it from fixed-output versions like MAX20072ATAB/V+ (1.2V).
Is spread-spectrum operation enabled by default on the MAX20071ATAB/V+T?
Yes, spread-spectrum operation is factory-enabled on the MAX20071ATAB/V+T, as indicated by the "B" in the part number suffix (ATAB). It modulates the 2.2MHz switching frequency by ±3% pseudo-randomly to reduce electromagnetic interference peaks-critical for passing CISPR 25 Class 5 emissions testing in automotive applications.
What is the purpose of the AV pin on the MAX20071ATAB/V+T?
The AV pin on the MAX20071ATAB/V+T supplies clean analog bias to the internal reference, error amplifier, and PWM comparator. It must be decoupled with a 1µF ceramic capacitor and isolated from noisy PV via a 10Ω series resistor. Proper AV routing minimizes noise coupling into the feedback path, preserving output voltage accuracy and loop stability.
How does the PGOOD output function on the MAX20071ATAB/V+T?
The PGOOD (PG) output on the MAX20071ATAB/V+T is an open-drain signal that asserts LOW when the regulated output deviates more than +7% (OV) or –7% (UV) from target. After returning within tolerance, it remains LOW for 50µs hold time. An external pullup resistor ≥2kΩ is required to interface with system supervisors or microcontroller GPIOs for power sequencing validation.
MAX20071ATAB/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 600mA
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
MAX20071ATAB/V+T FAQ
1.How can I place an order for MAX20071ATAB/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20071ATAB/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 MAX20071ATAB/V+T reliable?
The price and inventory of MAX20071ATAB/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 MAX20071ATAB/V+T is usually 5 days.
3.What payment methods are accepted for MAX20071ATAB/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20071ATAB/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20071ATAB/V+T?
MAX20071ATAB/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20071ATAB/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 MAX20071ATAB/V+T?
For technical support, including MAX20071ATAB/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20071ATAB/V+T requirements.
6.How does Aetrix verify that MAX20071ATAB/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20071ATAB/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 MAX20071ATAB/V+T meets industry standards.
7.What is the process for return or replacement of MAX20071ATAB/V+T?
All MAX20071ATAB/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20071ATAB/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 MAX20071ATAB/V+T part is unused and in its original packaging.
Return procedure for MAX20071ATAB/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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