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Analog Devices Inc./Maxim Integrated MAX16904SATB51/V+T
- Part No.:
- MAX16904SATB51/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX16904SATB51/V+T.pdf
- Description:
- IC REG BUCK 5.1V 600MA 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,587
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Product details
Overview
The MAX16904SATB51/V+T from Maxim Integrated is a synchronous buck DC-DC converter delivering 600mA output with 5.1V fixed output voltage, +3.5V to +28V input range, 2.1MHz switching frequency, and 25μA quiescent current in SKIP mode-designed for automotive power rails requiring high-voltage tolerance and AEC-Q100 compliance.
For engineers reviewing the MAX16904SATB51/V+T datasheet, MAX16904SATB51/V+T pinout, MAX16904SATB51/V+T application, or MAX16904SATB51/V+T equivalent, this page provides verified technical context, package mapping, thermal performance data, spread-spectrum EMI reduction capability, and validated alternative options for automotive-grade 5.1V point-of-load regulation.
Technical Context
The MAX16904SATB51/V+T uses current-mode control with integrated high-side (400–800mΩ RDS(ON)) and low-side (250–450mΩ RDS(ON)) MOSFETs, enabling 97% dropout operation and internal soft-start (8ms typical). Its SYNC pin supports three modes: SKIP (25μA IQ), forced fixed-frequency PWM, or external clock synchronization.
It features spread-spectrum modulation (+6% frequency deviation) to reduce radiated EMI while maintaining AM-band immunity, plus PGOOD monitoring with 88–98% VOUT threshold hysteresis and thermal shutdown at 175°C with 15°C hysteresis-fully specified across −40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.1V ±2.5% (fixed-frequency mode), ±4.0% (SKIP mode) |
| Input Voltage Range | +3.5V to +28V continuous; withstands +42V transients ≤1s |
| Max Output Current | 600mA continuous; peak current limit 0.85–1.22A |
| Switching Frequency | 2.1MHz typical (1.925–2.275MHz); supports SYNC synchronization 1.8–2.6MHz |
| Quiescent Current | 25μA typical in SKIP mode at no load; 4–8μA in shutdown |
| Thermal Performance | θJA = 41°C/W (TDFN-EP); junction-to-case θJC = 9°C/W |
| EMI Reduction | Spread-spectrum enabled (+6% modulation); guarantees no AM-band interference |
Pinout & Package
MAX16904SATB51/V+T is housed in a thermally enhanced 10-pin TDFN-EP package (3mm × 3mm × 0.75mm) with exposed pad connected to PGND. Pinout optimized for high-current paths and thermal dissipation in automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap capacitor node | Drives high-side FET gate; requires 0.1µF ceramic capacitor to LX |
| SUP | Main input supply | Accepts +3.5V to +28V; tolerates +42V transients; decoupled with 4.7µF ceramic |
| LX | Switching node | Connects to inductor; high-impedance when off; critical for EMI layout |
| PGND | Power ground return | High-current return path for LX and SUP; must be tied to exposed pad |
| OUTS | Voltage sense input | Feedback node; bypassed with ≥10µF X7R ceramic to PGND |
| PGOOD | Open-drain power-good flag | Pulls low if VOUT < 91% nominal; high-impedance above 93%; requires external pullup |
| SYNC | Mode control & sync input | GND/unconnected → SKIP mode; BIAS/external clock → forced PWM |
| BIAS | Internal LDO output | +5V logic supply; bypassed with 2.2µF ceramic to GND |
| GND | Analog ground reference | Separate from PGND; connected at single point near OUTS capacitor |
| EN | Enable input | High-voltage compatible (3.3V logic to +42V); no internal pullup/pulldown |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (−40°C to +125°C ambient), RoHS-compliant /V+ suffix |
| Dropout operation | Maintains regulation at >97% duty cycle; enables stable 5.1V output during cold-crank events |
| Ultra-low light-load efficiency | 25μA quiescent current in SKIP mode preserves battery life in always-on automotive modules |
| Robust protection suite | Overcurrent (1.05A typ), thermal shutdown (175°C), UVLO (3.0V typ with 0.4V hysteresis) |
| EMI-optimized design | 2.1MHz fixed frequency + optional spread-spectrum reduces peak radiated emissions |
Applications
| Infotainment Power Rail | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers display controllers and audio codecs in vehicle head units under wide battery voltage swings (6V–16V). IC Role / Device Role / Timing Role: Primary 5.1V point-of-load regulator with PGOOD monitoring for system sequencing. Use Value: Maintains regulation during cold-crank (down to 3.5V input) and rejects alternator ripple via 2.1MHz switching and spread-spectrum. | Use Scenario: Supplies image sensor and ISP in forward-facing ADAS cameras exposed to engine bay temperatures. IC Role / Device Role / Timing Role: High-reliability 5.1V buck converter with AEC-Q100 qualification and thermal shutdown. Use Value: Delivers 600mA at −40°C to +125°C with <±2.5% output accuracy and <10µs PGOOD debounce for fault detection. |
| Telematics Control Unit (TCU) | Body Control Module (BCM) Subsystem |
Use Scenario: Provides clean 5.1V rail for LTE modem, GNSS receiver, and CAN transceivers in cellular-connected ECUs. IC Role / Device Role / Timing Role: EMI-sensitive power stage synchronized via SYNC to avoid band interference with RF front-end. Use Value: Spread-spectrum mode reduces conducted emissions by >6dB; 25μA IQ extends sleep-mode battery life. | Use Scenario: Powers microcontroller peripherals (LIN, EEPROM, LED drivers) in door modules and seat controllers. IC Role / Device Role / Timing Role: Compact 3mm×3mm buck converter with enable-pin compatibility to 3.3V logic and 42V transients. Use Value: 10-pin TDFN-EP minimizes PCB area; EN pin accepts direct connection to MCU GPIO or CAN inhibit signals. |
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 | 4.5–36V input; 8A output; 2.1MHz; no spread-spectrum; QFN-16 | Higher current, larger package; lacks AEC-Q100 qualification and automotive temp range | Choose for non-automotive industrial 5.1V supplies needing >600mA |
| TPS62933RTER | 3–18V input; 3A output; 1.8–2.2MHz adjustable; no spread-spectrum; 3mm×2mm WQFN-10 | Lower max input voltage; no +42V transient tolerance; not AEC-Q100 qualified | Choose for space-constrained consumer or computing applications where automotive robustness is unnecessary |
Compared with LM61480RQWR and TPS62933RTER, the MAX16904SATB51/V+T uniquely combines AEC-Q100 Grade 1 qualification, +42V transient tolerance, spread-spectrum EMI reduction, and 25μA SKIP-mode quiescent current in a 3mm×3mm automotive-qualified package-making it irreplaceable for safety-critical 5.1V automotive power rails.
Availability
MAX16904SATB51/V+T is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and telematics control units requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for MAX16904SATB51/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
Maxim Integrated, now part of Analog Devices, designs precision analog, mixed-signal, and power management ICs for automotive, industrial, and communications markets.
The MAX16904 product line delivers compact, high-voltage synchronous buck converters optimized for automotive subsystems demanding AEC-Q100 reliability, cold-crank operation, and low EMI in space-constrained environments.
FAQ
What is the output voltage tolerance of the MAX16904SATB51/V+T in fixed-frequency mode?
The MAX16904SATB51/V+T has a fixed 5.1V output with ±2.5% tolerance in forced fixed-frequency mode across −40°C to +125°C, 6V–18V input, and 0–600mA load. This specification ensures reliable power delivery to automotive microcontrollers and sensors without external trimming.
Does the MAX16904SATB51/V+T support synchronization to an external clock?
Yes, the MAX16904SATB51/V+T supports external clock synchronization via its SYNC pin, accepting frequencies from 1.8MHz to 2.6MHz. When driven by an external clock source or connected to the BIAS pin, the device operates in forced PWM mode-enabling deterministic EMI profile and timing alignment with other system supplies.
What package type and thermal characteristics does the MAX16904SATB51/V+T use?
The MAX16904SATB51/V+T uses a 10-pin TDFN-EP package (3mm × 3mm × 0.75mm) with exposed pad. Its thermal resistance is θJA = 41°C/W and θJC = 9°C/W on a four-layer board, enabling 1.95W continuous power dissipation at +70°C ambient before derating-critical for under-hood automotive placement.
How does the MAX16904SATB51/V+T handle cold-crank conditions?
The MAX16904SATB51/V+T maintains regulation during cold-crank by operating at >97% duty cycle, supporting input voltages down to +3.5V. Its undervoltage lockout (UVLO) activates at 2.8–3.2V with 0.4V hysteresis, and it tolerates +42V transients ≤1s-ensuring uninterrupted 5.1V output to safety-critical ECUs during engine start.
Is spread-spectrum modulation enabled on the MAX16904SATB51/V+T?
Yes, the "S" in MAX16904SATB51/V+T denotes enabled spread-spectrum frequency modulation (+6% deviation around 2.1MHz), which reduces peak radiated EMI without compromising AM-band immunity. This feature is factory-configured and cannot be disabled in-circuit.
MAX16904SATB51/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 28V
- Voltage - Output (Min/Fixed):
- 5.1V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TDFN (3x3)
MAX16904SATB51/V+T FAQ
1.How can I place an order for MAX16904SATB51/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16904SATB51/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 MAX16904SATB51/V+T reliable?
The price and inventory of MAX16904SATB51/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 MAX16904SATB51/V+T is usually 5 days.
3.What payment methods are accepted for MAX16904SATB51/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16904SATB51/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16904SATB51/V+T?
MAX16904SATB51/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16904SATB51/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 MAX16904SATB51/V+T?
For technical support, including MAX16904SATB51/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16904SATB51/V+T requirements.
6.How does Aetrix verify that MAX16904SATB51/V+T is sourced from the original manufacturer or authorized distributors?
All MAX16904SATB51/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 MAX16904SATB51/V+T meets industry standards.
7.What is the process for return or replacement of MAX16904SATB51/V+T?
All MAX16904SATB51/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16904SATB51/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 MAX16904SATB51/V+T part is unused and in its original packaging.
Return procedure for MAX16904SATB51/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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