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Analog Devices Inc./Maxim Integrated MAX20071ATAA/V+
- Part No.:
- MAX20071ATAA/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
MAX20071ATAA/V+.pdf
- Description:
- IC REG BUCK ADJ 600MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,607
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Product details
Overview
MAX20071ATAA/V+ from Analog Devices is a 600mA, adjustable-output synchronous step-down DC-DC converter in an 8-pin TDFN-EP package. It operates from 3.0V to 5.5V input, delivers output from 0.5V to 3.8V, features 2.2MHz fixed-frequency PWM operation, ±1.5% output-voltage accuracy over load/line/temperature, and includes enable input, PGOOD output, and 0.85ms soft-start. It is designed for automotive point-of-load regulation.
For engineers reviewing the MAX20071ATAA/V+ datasheet, MAX20071ATAA/V+ pinout, MAX20071ATAA/V+ application, or MAX20071ATAA/V+ equivalent, key selection considerations include its 600mA current rating (vs. 1A MAX20072), factory-adjustable or resistor-programmable output, 2.2MHz switching frequency enabling all-ceramic designs, and automotive-grade -40°C to +125°C operation with overtemperature and overcurrent protection.
Technical Context
The MAX20071ATAA/V+ implements a current-mode control architecture with internal high-side (80–300mΩ) and low-side (50–200mΩ) MOSFETs, supporting both forced-PWM and pulse-skipping modes via the SYNC pin. Its 0.5V internal reference and feedback pin (OUT) enable precise resistor-based output programming or factory presetting in 10mV steps.
It integrates a spread-spectrum oscillator (±3% frequency dithering, disabled in this variant), thermal shutdown at +165°C with 15°C hysteresis, and active-low open-drain PGOOD with 7% OV/UV detection thresholds and 50µs hold time. The device uses a fixed 0.85ms soft-start ramp to limit inrush current during power-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 600mA maximum continuous - supports compact point-of-load rails for microcontrollers or sensors without external current boosting. |
| Input Voltage Range | 3.0V to 5.5V - compatible with automotive 3.3V/5V supply rails and post-regulation from higher intermediate buses. |
| Output Voltage Range | 0.5V to 3.8V - programmable via external resistor divider (0.5V reference) or factory preset - enables core voltage scaling for low-power SoCs. |
| Switching Frequency | 2.2MHz (fixed, no spread spectrum) - allows use of small 2.2µH inductors and all-ceramic 4.7µF/10µF input/output capacitors. |
| Output Accuracy | ±1.5% over load, line, and temperature - eliminates need for 0.1% external resistors when factory preset; ensures stable logic rail tolerance. |
| Operating Temperature | -40°C to +125°C ambient - qualified for under-hood automotive applications and industrial embedded systems. |
| Soft-Start Time | Fixed 0.85ms - controls output ramp rate to prevent inrush-induced supply droop or system reset during startup. |
Pinout & Package
Package: 8-pin TDFN-EP (2mm × 2mm × 0.85mm, exposed pad), RoHS-compliant, automotive-qualified (V+ suffix). Thermal resistance θJA = 85.3°C/W on four-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 AV | Analog supply | Separate analog rail for internal reference and error amplifier; requires 1µF capacitor + 10Ω series resistor to PV for noise immunity. |
| 2 SYNC | Synchronization input | Logic-controlled mode selector: grounded → skip mode (light-load efficiency); tied to PV or clock → forced PWM (constant frequency, low noise). |
| 3 PGND | Power ground | Dedicated low-impedance return path for high-current LX switching node; must be connected directly to EP and system GND plane. |
| 4 PV | Main power input | Primary input supply (3.0–5.5V); requires ≥4.7µF ceramic capacitor to PGND close to pin for transient current handling. |
| 5 PG | Power-good output | Active-low open-drain signal asserting after 10µs delay when output deviates >7% from regulation; requires external pullup ≥2kΩ. |
| 6 LX | Switch node | Connection to inductor's switched side; carries high di/dt current - must be routed short and wide with minimal loop area to reduce EMI. |
| 7 EN | Enable input | Active-high logic control (VIH = 1.5V min); rising edge initiates 0.85ms soft-start; falling edge forces shutdown with <2µA quiescent current. |
| 8 OUT | Feedback input | Connects to resistor divider midpoint; senses output voltage against 0.5V internal reference - sets output as VOUT = 0.5V × (1 + R1/R2). |
| EP | Exposed pad | Thermal and electrical ground connection; requires ≥3 vias to inner GND planes for effective heat dissipation and low-impedance return. |
Key Features
| Feature | Design Value |
|---|---|
| Current-mode PWM control | Enables fast transient response and inherent cycle-by-cycle current limiting - critical for stable operation under dynamic load steps in automotive ECUs. |
| Factory-preset or resistor-adjustable output | Supports ±1.5% accuracy without precision resistors (factory option) or full flexibility down to 0.5V (external divider) - reduces BOM count and design iteration time. |
| 0.85ms fixed soft-start | Guarantees controlled output ramp without external components - prevents brownout on shared supply rails during cold cranking or wake-up events. |
| Integrated overtemperature and overcurrent protection | Shuts down at +165°C junction temp with 15°C hysteresis and limits peak current to 0.9–1.1A - protects against sustained overload or PCB thermal failure. |
| Automotive-grade operating range | Validated from -40°C to +125°C ambient - meets AEC-Q100 stress test requirements for under-dash and engine bay deployments. |
Applications
| Automotive ADAS Camera Module | Industrial PLC I/O Power Rail |
|---|---|
Use Scenario: Powering image sensor and ISP core in a rear-view camera module mounted near exhaust or under bumper. IC Role / Device Role / Timing Role: Primary 1.2V/600mA point-of-load regulator converting 5V vehicle bus to clean, low-noise core voltage. Use Value: 2.2MHz switching avoids AM radio band interference; ±1.5% accuracy ensures sensor ADC reference stability; -40°C to +125°C rating sustains operation during thermal cycling. |
Use Scenario: Generating isolated 3.3V logic rail for digital input/output modules in factory automation controllers. IC Role / Device Role / Timing Role: Compact, thermally robust DC-DC stage replacing linear regulators to improve efficiency and reduce heatsink size. Use Value: 600mA output supports multiple isolated channel drivers; TDFN-EP package enables dense layout; PGOOD enables safe system boot sequencing. |
| Automotive Body Control Unit (BCU) | Medical Portable Diagnostic Device |
Use Scenario: Supplying 1.8V to microcontroller and CAN transceiver in door module with limited PCB space. IC Role / Device Role / Timing Role: Secondary regulator stepping down 3.3V domain to MCU core voltage with tight transient response. Use Value: Enable input synchronizes with system sleep/wake; SYNC pin configures skip mode for ultra-low idle current; automotive qualification ensures long-term reliability. |
Use Scenario: Providing regulated 0.9V core supply for low-power ARM Cortex-M processor in handheld ultrasound probe. IC Role / Device Role / Timing Role: High-efficiency, low-EMI buck converter powering battery-sensitive digital subsystem. Use Value: All-ceramic design minimizes solution size and weight; 0.85ms soft-start prevents false resets during battery insertion; ±1.5% accuracy maintains timing margin for real-time processing. |
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 |
|---|---|---|---|
| MAX20072ATAA/V+ | 1A output current, identical pinout and package; same 2.2MHz frequency and ±1.5% accuracy but higher current capability. | Required where load exceeds 600mA (e.g., multi-core MCUs or FPGAs); otherwise electrically interchangeable with layout reuse. | Select MAX20072ATAA/V+ only if peak load current exceeds 600mA - no change to schematic or layout needed, but verify thermal margin at full load. |
| TPS62840DRLR | 600mA, 1.8–5.5V input, 0.6–3.3V output; 2.25MHz switching; ±1% accuracy; integrated soft-start; smaller 1.5mm × 1.5mm DFN. | Targets ultra-low IQ (300nA shutdown) portable applications; lacks PGOOD and SYNC pin - no skip/PWM mode control or power sequencing. | Choose TPS62840DRLR for battery-powered devices needing nanowatt shutdown; avoid where PGOOD monitoring or automotive qualification is mandatory. |
Compared with MAX20072ATAA/V+, the MAX20071ATAA/V+ offers identical functionality at reduced current rating - enabling cost and thermal optimization in sub-600mA designs. Versus TPS62840DRLR, it trades ultra-low IQ for automotive qualification, PGOOD signaling, and flexible mode control - making it suitable for safety-critical, thermally demanding environments.
Availability
MAX20071ATAA/V+ is available at Aetrix Electronics and suitable for automotive ADAS modules, industrial PLCs, body control units, and portable medical diagnostics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX20071ATAA/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
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 with precision power, sensing, and conversion solutions.
The MAX20071/MAX20072 family was engineered specifically for automotive point-of-load regulation - delivering high efficiency, small footprint, and AEC-Q100 compliance in harsh thermal and electrical environments.
FAQ
What is the maximum output current supported by the MAX20071ATAA/V+?
The MAX20071ATAA/V+ supports up to 600mA of continuous output current. This is confirmed in the Ordering Information table and Electrical Characteristics section, where the MAX20071 variant is explicitly rated for 0.6A (vs. 1.0A for MAX20072). The current-limit threshold is specified as 0.9A to 1.1A, providing headroom for transient peaks while maintaining reliable steady-state operation at 600mA.
Does the MAX20071ATAA/V+ include spread spectrum modulation?
No, the MAX20071ATAA/V+ does not include spread spectrum modulation. According to the Ordering Information table, only variants with "B" or "D" in the suffix (e.g., MAX20071ATAB/V+) feature enabled spread spectrum. The "AA" designation in MAX20071ATAA/V+ indicates the spread spectrum oscillator is disabled, resulting in a fixed 2.2MHz switching frequency without dithering.
How is the output voltage set on the MAX20071ATAA/V+?
The MAX20071ATAA/V+ supports two output configuration methods: factory preset (in 10mV steps, achieving ±1.5% accuracy without external resistors) or resistor-adjustable using the OUT pin and 0.5V internal reference. For adjustable mode, connect a resistive divider from VOUT to OUT to GND, calculating R1 = R2 × ((VOUT/0.5V) − 1), with R2 ≤ 100kΩ.
What is the purpose of the SYNC pin on the MAX20071ATAA/V+?
The SYNC pin on the MAX20071ATAA/V+ selects between two operating modes: grounding or leaving SYNC unconnected enables pulse-skipping mode for high light-load efficiency; tying SYNC to PV or an external clock forces fixed-frequency PWM mode for predictable EMI and low-noise operation. This dual-mode capability allows dynamic optimization based on real-time load conditions.
Is the MAX20071ATAA/V+ qualified for automotive applications?
Yes, the MAX20071ATAA/V+ is automotive-qualified. The "/V" suffix in the part number explicitly denotes AEC-Q100 qualification, and the device is specified to operate from -40°C to +125°C ambient temperature. Its integrated overtemperature shutdown (+165°C), overcurrent protection, and robust 2.2MHz PWM architecture meet stringent automotive reliability and functional safety requirements.
MAX20071ATAA/V+ 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
MAX20071ATAA/V+ FAQ
1.How can I place an order for MAX20071ATAA/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20071ATAA/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 MAX20071ATAA/V+ reliable?
The price and inventory of MAX20071ATAA/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20071ATAA/V+ is usually 5 days.
3.What payment methods are accepted for MAX20071ATAA/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20071ATAA/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20071ATAA/V+?
MAX20071ATAA/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20071ATAA/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 MAX20071ATAA/V+?
For technical support, including MAX20071ATAA/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20071ATAA/V+ requirements.
6.How does Aetrix verify that MAX20071ATAA/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20071ATAA/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 MAX20071ATAA/V+ meets industry standards.
7.What is the process for return or replacement of MAX20071ATAA/V+?
All MAX20071ATAA/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20071ATAA/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 MAX20071ATAA/V+ part is unused and in its original packaging.
Return procedure for MAX20071ATAA/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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