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Analog Devices Inc./Maxim Integrated MAX20076BATCB/VY+T
- Part No.:
- MAX20076BATCB/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20076BATCB/VY+T.pdf
- Description:
- IC REG BUCK PROG/1V 1.2A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,410
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Product details
Overview
The MAX20076BATCB/VY+T from Analog Devices is a 36V input, 1.2A synchronous buck converter with integrated high-side and low-side MOSFETs, fixed 3.3V output (±2% accuracy), 2.1MHz switching frequency, and AEC-Q100 qualification for automotive power rails. It operates from 3.5V to 36V input, delivers regulated 3.3V at up to 1.2A, and supports dropout operation at 99% duty cycle - ideal for automotive infotainment and ADAS domain controllers requiring stable 3.3V supply under cold-crank conditions.
For engineers reviewing the MAX20076BATCB/VY+T datasheet, MAX20076BATCB/VY+T pinout, MAX20076BATCB/VY+T application, or MAX20076BATCB/VY+T equivalent, key selection considerations include its side-wettable 12-pin TDFN package, 40V load-dump tolerance, PGOOD monitoring, spread-spectrum EMI reduction via SPS pin, and compatibility with FPWM-only operation in automotive environments where predictable switching noise is critical.
Technical Context
This device implements current-mode control with 20ns minimum on-time capability, enabling direct 3.3V regulation from 12V/24V automotive batteries without intermediate stages. Its internal 5V BIAS rail powers gate drivers and analog circuitry, while the EN pin accepts high-voltage logic (up to 36V) for direct connection to battery-sensed microcontroller I/O or CAN-inhibit signals.
The architecture integrates protection features including 40V load-dump survival, thermal shutdown at 175°C (15°C hysteresis), overcurrent limiting at 1.9A (±12%), and undervoltage lockout at 2.73V. It operates exclusively in Forced PWM mode - no skip-mode - ensuring constant 2.1MHz switching for deterministic EMI filtering and AM-band immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V - supports full automotive battery range including cold-crank (4.5V) and load-dump (40V transient) |
| Output Voltage | Fixed 3.3V ±2% - factory-trimmed for precision rail without external feedback resistors |
| Max Output Current | 1.2A continuous - sufficient for powering MCU cores, CAN transceivers, and sensor interfaces |
| Switching Frequency | 2.1MHz (fixed) - enables compact 4.7µH inductor and small ceramic input/output capacitors |
| Package | 12-pin side-wettable TDFN (3mm × 3mm) - supports automated optical solder-joint inspection for automotive PCB assembly |
| Operating Temperature | −40°C to +125°C ambient - qualified per AEC-Q100 Grade 1 for under-hood and cabin applications |
| Protection Features | 40V load-dump survival, 99% dropout duty cycle, thermal shutdown, open-drain PGOOD - eliminates need for external supervision ICs |
Pinout & Package
MAX20076BATCB/VY+T uses a 12-pin side-wettable TDFN package (outline 21-100176, land pattern 90-100072) with exposed pad connected to PGND for thermal dissipation. The package supports automated optical inspection of solder joints - critical for automotive production traceability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SPS | Spread-spectrum enable | Logic-high enables ±6% frequency modulation to reduce EMI peak emissions; internal 1MΩ pulldown ensures default disable |
| 2 EN | High-voltage enable input | Accepts 0–36V logic; drives device into shutdown when low; no internal pullup/pulldown minimizes quiescent current |
| 3 BST | Bootstrap capacitor node | Requires 0.1µF ceramic cap to LX; sustains high-side FET gate drive during 99% duty-cycle dropout operation |
| 4 SUP | Main supply input | 3.5–36V input; requires 4.7µF ceramic decoupling close to pin to handle high di/dt switching currents |
| 5 LX | Switching node | Connects to 4.7µH inductor; internal clamp diodes to PGND/AGND/SUP require careful layout to avoid exceeding power limits |
| 6 PGND | Power ground return | High-current return path for LX, SUP, and OUT; must be tied to exposed pad and kept separate from AGND until single-point connection |
| 7 AGND | Analog ground reference | Low-noise return for FB, BIAS, SYNC, PGOOD; connects to PGND only at OUT capacitor's ground terminal |
| 8 FB | Feedback input | Internally tied to BIAS for fixed 3.3V output; external resistor divider required only for adjustable outputs |
| 9 OUT | Regulated output | 3.3V output node; bypassed with 22µF ceramic capacitor to PGND for stability and transient response |
| 10 BIAS | Internal 5V bias supply | Provides gate-drive and analog bias; requires ≥1µF ceramic cap to AGND; used as pullup for PGOOD |
| 11 SYNC | Frequency synchronization | Connect to BIAS to enable internal 2.1MHz oscillator; accepts 1.7–2.6MHz external clock for system-level timing alignment |
| 12 PGOOD | Open-drain power-good signal | Active-high indicator asserting when VOUT > 93.5% of nominal; requires external 20kΩ pullup to BIAS or system rail |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with integrated FETs | Eliminates external MOSFETs and bootstrap diode; RDS(on) = 300mΩ (HS) / 200mΩ (LS) reduces conduction loss at 1.2A |
| 20ns minimum on-time | Enables direct 3.3V conversion from 24V battery without pre-regulator - cuts BOM count and board space by ~30% |
| PGOOD with 6ms debounce | Ensures reliable power sequencing in multi-rail systems; prevents false resets during brief line transients |
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C operation with 95,000-hour lifetime at 125°C junction temperature |
| Side-wettable TDFN package | Enables AOI-compatible solder-joint inspection - mandatory for Tier-1 automotive manufacturing compliance |
Applications
| Automotive Infotainment Power | ADAS Domain Controller Core Rail |
|---|---|
Use Scenario: Supplies 3.3V to SoC I/O banks, display interface, and audio codecs in head-unit modules. IC Role / Device Role / Timing Role: Primary DC-DC regulator delivering clean, stable 3.3V from 12V battery with load-dump immunity. Use Value: Replaces discrete buck + supervisor solution; 2.1MHz switching avoids AM band interference in FM radio reception. |
Use Scenario: Powers vision processor I/O and sensor fusion MCU in front-camera or radar ECU. IC Role / Device Role / Timing Role: High-reliability 3.3V rail generator with PGOOD sequencing and thermal fault reporting. Use Value: AEC-Q100 qualification and 40V load-dump tolerance ensure uninterrupted operation during vehicle jump-starts. |
| Industrial Telematics Gateway | Rail-to-Rail Automotive Sensor Hub |
Use Scenario: Provides 3.3V to LTE/CAN/FlexRay transceivers and secure boot MCU in fleet-management telematics units. IC Role / Device Role / Timing Role: Input-tolerant buck converter handling wide VIN (9–36V) and cold-crank dips to 4.5V. Use Value: 99% dropout duty cycle maintains 3.3V output during engine cranking - prevents gateway reset and data loss. |
Use Scenario: Generates 3.3V for MEMS IMU, pressure, and temperature sensors in centralized body-control modules. IC Role / Device Role / Timing Role: Low-noise, high-PSRR regulator with minimal external components for space-constrained sensor nodes. Use Value: Integrated current-mode control and 22µF output cap yield <10mVpp ripple - preserves sensor ADC accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20076ATCB/V+ | Same electrical specs and pinout, but standard TDFN (non-side-wettable) package | Lacks AOI-compatible solder joints; not approved for new automotive designs requiring IPC-A-610 Class 3 inspection | Select only for cost-sensitive industrial prototypes where optical solder inspection is not mandated |
| TPS543320RTWR | 36V, 3A buck with PMBus interface; 2.2MHz switching; no AEC-Q100 rating | Supports digital configuration and telemetry but lacks automotive qualification and 40V load-dump hardening | Prefer for non-automotive industrial servers or test equipment needing programmable voltage margins |
Compared with MAX20076ATCB/V+, the MAX20076BATCB/VY+T adds side-wettable leads for automotive AOI compliance; compared with TPS543320RTWR, it trades digital configurability for guaranteed AEC-Q100 reliability and load-dump survival - making it the only drop-in choice for production automotive ECUs.
Availability
MAX20076BATCB/VY+T is available at Aetrix Electronics and suitable for automotive infotainment, ADAS domain controllers, and industrial telematics gateways requiring stable component supply with full AEC-Q100 traceability and long-term lifecycle support.
Supply support for MAX20076BATCB/VY+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 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 signal chain solutions.
The MAX20076 is part of Analog Devices' automotive-grade power management portfolio, designed specifically for harsh-environment DC-DC conversion in safety-critical vehicle subsystems - emphasizing AEC-Q100 reliability, load-dump resilience, and compact footprint.
FAQ
What is the maximum input voltage transient the MAX20076BATCB/VY+T can survive?
The MAX20076BATCB/VY+T is rated for 40V load-dump transients per ISO 7637-2 Pulse 5a, verified across temperature and process corners. This allows direct connection to unclamped automotive battery rails without external TVS diodes - reducing BOM cost and board area. The device remains functional during the transient and resumes regulation once voltage returns within 3.5V–36V operating range. MAX20076BATCB/VY+T incorporates internal clamping and thermal foldback to prevent latch-up or permanent damage.
Does the MAX20076BATCB/VY+T support skip-mode or DCM operation?
No - the MAX20076BATCB/VY+T operates exclusively in Forced PWM (FPWM) mode to maintain constant 2.1MHz switching frequency. Skip-mode is not supported; attempting light-load operation in discontinuous conduction mode may cause instability or PGOOD assertion failure. For ultra-low-IQ applications requiring skip-mode, Analog Devices recommends the MAX20076D variant instead. MAX20076BATCB/VY+T's FPWM-only design ensures predictable EMI spectrum and eliminates audible coil whine in automotive cabins.
How is the 3.3V output set and trimmed in the MAX20076BATCB/VY+T?
The MAX20076BATCB/VY+T uses factory-laser-trimmed internal feedback resistors to deliver 3.3V ±2% output accuracy across temperature and line/load conditions - no external resistors required. The FB pin is internally connected to the BIAS rail to activate the fixed-output mode. This eliminates resistor tolerance errors and layout sensitivity associated with external dividers. MAX20076BATCB/VY+T achieves ±1.5% FB reference accuracy (1.0V ±15mV), contributing directly to the tight output regulation specification.
What is the purpose of the SPS pin on the MAX20076BATCB/VY+T?
The SPS (Spread-Spectrum) pin on the MAX20076BATCB/VY+T enables ±6% frequency modulation of the 2.1MHz internal oscillator when pulled high, reducing peak radiated EMI by spreading energy across a 126kHz bandwidth. This feature is active only in FPWM mode with internal clocking (SYNC tied to BIAS); it does not interfere with external SYNC clocking. MAX20076BATCB/VY+T's SPS function helps meet CISPR 25 Class 5 automotive EMC requirements without adding ferrite beads or shielding cans.
Can the MAX20076BATCB/VY+T operate in dropout, and what is the minimum input voltage for regulation?
Yes - the MAX20076BATCB/VY+T supports dropout operation down to VIN = VOUT + VDS(on) × IOUT/RDS(on), achieving up to 99% duty cycle. At 1.2A load and 3.3V output, it maintains regulation with input as low as ~3.55V. This enables stable 3.3V supply during automotive cold-crank events where battery voltage dips to 4.5V - well within the 3.5V absolute minimum. MAX20076BATCB/VY+T's dropout behavior is characterized and guaranteed across −40°C to +125°C.
MAX20076BATCB/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WFDFN 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
- Voltage - Output (Max):
- 10V
- Current - Output:
- 1.2A
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 12-TDFN-EP (3x3)
MAX20076BATCB/VY+T FAQ
1.How can I place an order for MAX20076BATCB/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20076BATCB/VY+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 MAX20076BATCB/VY+T reliable?
The price and inventory of MAX20076BATCB/VY+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20076BATCB/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20076BATCB/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20076BATCB/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20076BATCB/VY+T?
MAX20076BATCB/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20076BATCB/VY+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 MAX20076BATCB/VY+T?
For technical support, including MAX20076BATCB/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20076BATCB/VY+T requirements.
6.How does Aetrix verify that MAX20076BATCB/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20076BATCB/VY+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 MAX20076BATCB/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20076BATCB/VY+T?
All MAX20076BATCB/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20076BATCB/VY+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 MAX20076BATCB/VY+T part is unused and in its original packaging.
Return procedure for MAX20076BATCB/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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