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Analog Devices Inc./Maxim Integrated MAX16904RAUE50/V+T
- Part No.:
- MAX16904RAUE50/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MAX16904RAUE50/V+T.pdf
- Description:
- IC REG BUCK 5V 600MA 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,442
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Product details
Overview
The MAX16904RAUE50/V+T from Maxim Integrated is a synchronous buck DC-DC converter IC delivering 600mA output with fixed 5.0V regulation, operating from +3.5V to +28V input and featuring 2.1MHz switching frequency, 25μA no-load quiescent current, and AEC-Q100 qualification for automotive power rails.
For engineers reviewing the MAX16904RAUE50/V+T datasheet, MAX16904RAUE50/V+T pinout, MAX16904RAUE50/V+T application, or MAX16904RAUE50/V+T equivalent, this page provides verified package mapping (16-pin TSSOP-EP), confirmed thermal shutdown at +175°C, PGOOD monitoring capability, spread-spectrum disable status, and automotive-grade transient tolerance up to +42V.
Technical Context
The MAX16904RAUE50/V+T implements current-mode control with integrated high-side and low-side DMOS switches (RDS(ON) = 400–800mΩ / 250–450mΩ), enabling dropout operation at 97% duty cycle. Its internal oscillator supports three SYNC-configurable modes: SKIP (25μA IQ), forced fixed-frequency PWM, and external synchronization (1.8–2.6MHz).
It integrates undervoltage lockout (3.0V typ), soft-start (8ms typ), overcurrent protection (1.05A typ), and thermal shutdown (+175°C). The device uses a bootstrap gate drive (BST pin) and requires external 0.1μF BST capacitor, 4.7μF input ceramic cap, and 10μF output ceramic cap - all specified in the Typical Operating Circuits for 5V/600mA output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±2.5% (fixed-frequency mode), ±4.0% (SKIP mode), guaranteed across -40°C to +125°C |
| Input Voltage Range | +3.5V to +28V continuous; withstands +42V transients ≤1s - enables direct connection to automotive battery rails |
| Switching Frequency | 2.1MHz typical (1.925–2.275MHz); avoids AM band (0.53–1.71MHz) and permits compact 3.3–4.7μH inductors |
| Quiescent Current | 25μA typical in SKIP mode at no load - extends battery life in always-on automotive modules |
| Output Current | 600mA minimum continuous; peak current limit 1.05A typical - supports microcontroller, sensor, and CAN transceiver rails |
| Thermal Protection | Thermal shutdown at +175°C with 15°C hysteresis - ensures safe operation under sustained overload or poor heatsinking |
| PGOOD Accuracy | Active-high open-drain output asserting low when VOUT drops below 91% nominal; debounced 10μs - enables reliable system power sequencing |
Pinout & Package
MAX16904RAUE50/V+T is housed in a thermally enhanced 16-pin TSSOP-EP package (5mm × 4.4mm, exposed pad), rated for -40°C to +125°C operation and AEC-Q100 qualified. The exposed pad must be soldered to PGND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | BST | Bootstrap node for high-side driver; requires 0.1μF ceramic capacitor to LX - critical for gate drive voltage generation |
| 2, 3 | SUP | Main input supply (3.5–28V); dual pins must be shorted externally - reduces IR drop and improves transient response |
| 4, 5 | LX | Switching node connecting to inductor; dual pins must be shorted - carries high di/dt current; layout-sensitive |
| 6, 7 | PGND | Power ground return for high-current paths; dual pins must be shorted - forms low-inductance return path for LX/SUP |
| 8 | OUTS | Voltage feedback sense input; bypassed with ≥10μF X7R ceramic to PGND - sets regulation point and loop stability |
| 11 | PGOOD | Open-drain power-good flag; pulled up externally (e.g., 20kΩ to BIAS) - signals valid output voltage to host MCU |
| 12 | SYNC | Mode control input: GND/unconnected → SKIP; BIAS/clock → forced PWM - enables dynamic efficiency optimization |
| 13 | BIAS | +5V internal LDO output; bypassed with 2.2μF ceramic to GND - powers internal logic and serves as PGOOD pullup |
| 14 | GND | Analog ground reference; separate from PGND - connects to signal ground plane, tied to PGND only at OUTS capacitor |
| 15 | EN | Enable input; high-voltage compatible (3.3V logic to +42V); no internal pullup - allows direct connection to automotive key/CAN inhibit |
| 9, 10, 16 | N.C. | No internal connection - must remain unconnected per datasheet; not used for routing or grounding |
Key Features
| Feature | Design Value |
|---|---|
| Wide input range with transient tolerance | +3.5V to +28V operation, +42V transient survival - eliminates need for upstream pre-regulator in 12V/24V automotive systems |
| Ultra-low quiescent current | 25μA typical in SKIP mode - enables >1-year battery standby in telematics and ADAS always-on modules |
| Integrated power-good monitoring | Dedicated open-drain PGOOD with 91–98% threshold window - simplifies system-level power sequencing without external comparators |
| Automotive-grade thermal protection | +175°C shutdown with 15°C hysteresis - prevents latch-up during engine-bay temperature excursions |
| High-efficiency synchronous topology | Integrated high/low-side DMOS (RDS(ON) < 0.8Ω HS / < 0.45Ω LS) - achieves >90% efficiency at 5V/300mA with 4.7μH inductor |
| Dropout-capable 97% duty cycle | Continuous operation down to VIN ≈ VOUT + 0.5V - sustains 5V output during cold-crank events (e.g., 6.5V battery dip) |
Applications
| Automotive Body Control Module (BCM) | ADAS Camera Power Supply |
|---|---|
Use Scenario: Powers microcontroller, LIN transceivers, and LED drivers in door modules and lighting controllers. IC Role / Device Role / Timing Role: Primary 5V rail regulator converting raw battery voltage to stable logic supply. Use Value: Withstands +42V load-dump transients and maintains regulation during cold-crank (6.5V min), ensuring uninterrupted BCM operation. |
Use Scenario: Supplies clean 5V power to image sensors and ISP processors in forward-facing cameras. IC Role / Device Role / Timing Role: High-PWM-frequency buck converter minimizing EMI near sensitive analog video paths. Use Value: 2.1MHz switching avoids AM band interference and enables small 3.3μH inductor, reducing board space in compact camera housings. |
| Industrial CAN Node Power | Automotive Infotainment Display Backlight Bias |
Use Scenario: Provides isolated 5V supply for CAN FD transceivers and microcontrollers in factory automation nodes. IC Role / Device Role / Timing Role: Input-stage DC-DC regulator feeding isolated DC/DC or LDOs powering CAN PHY and MCU. Use Value: AEC-Q100 qualification and -40°C to +125°C operation ensure reliability in harsh industrial environments with wide ambient swings. |
Use Scenario: Generates stable 5V bias for LED driver ICs powering TFT-LCD backlights in center-stack displays. IC Role / Device Role / Timing Role: Main 5V rail generator supporting dynamic dimming and fast turn-on requirements. Use Value: PGOOD output synchronizes backlight enable with system boot sequence, preventing display flicker during startup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480QWRNXTQ1 | 4.5–36V input, 8A output, 2.1MHz, no spread-spectrum option, larger 16-pin WQFN (3×3mm) | Higher current capacity; suited for multi-rail systems requiring >1A per rail | Select when scaling beyond 600mA or needing higher VIN max rating (36V vs. 28V) |
| TPS62933QPWRRQ1 | 3–18V input, 3A output, 1.8–4MHz programmable frequency, 15μA IQ, smaller 12-pin VQFN (2×2mm) | Lower input range; optimized for low-IQ portable automotive modules | Select when prioritizing ultra-low IQ (<20μA) and compact size over high-VIN capability |
Compared with LM61480QWRNXTQ1 and TPS62933QPWRRQ1, the MAX16904RAUE50/V+T uniquely balances 28V max input, 600mA output, 25μA SKIP-mode IQ, and AEC-Q100 compliance in a mature, production-proven 16-pin TSSOP package - making it optimal for cost-sensitive, space-constrained 5V automotive sub-systems.
Availability
MAX16904RAUE50/V+T is available at Aetrix Electronics and suitable for automotive body electronics, ADAS camera modules, and industrial CAN node designs requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.
Supply support for MAX16904RAUE50/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 MAX16904RAUE50/V+T belongs to Maxim's automotive-qualified mini-buck converter family, engineered specifically for high-input-voltage, low-quiescent-current power rails in engine control units, infotainment systems, and safety-critical electronic control modules.
FAQ
What is the exact output voltage and tolerance of the MAX16904RAUE50/V+T?
The MAX16904RAUE50/V+T delivers a fixed 5.0V output. Its voltage accuracy is ±2.5% under fixed-frequency operation and ±4.0% in SKIP mode, tested across the full -40°C to +125°C temperature range and 0–600mA load. This specification is explicitly confirmed in the Electrical Characteristics table on page 3 of the official datasheet.
Does the MAX16904RAUE50/V+T include spread-spectrum frequency modulation?
No, the MAX16904RAUE50/V+T does not include spread-spectrum modulation. Per the Selector Guide, the "RA" prefix indicates the spread-spectrum option is disabled; only "SA"-prefixed variants (e.g., MAX16904SAUE50/V+) feature +6% frequency dithering. This is confirmed by the ordering table and top-mark code absence in the Selector Guide.
What package type and pin count does the MAX16904RAUE50/V+T use?
The MAX16904RAUE50/V+T uses a 16-pin TSSOP-EP package (5mm × 4.4mm) with an exposed thermal pad. This is explicitly stated in the Ordering Information table and Package Information section, and verified by the "U16E+3" package code and land pattern number 90-0120.
Is the MAX16904RAUE50/V+T qualified for automotive applications?
Yes, the MAX16904RAUE50/V+T is AEC-Q100 qualified and rated for the full automotive temperature range (-40°C to +125°C). The "/V+" suffix denotes automotive qualification, and the datasheet confirms AEC-Q100 compliance in the Features list and Absolute Maximum Ratings section.
What is the maximum input voltage transient the MAX16904RAUE50/V+T can withstand?
The MAX16904RAUE50/V+T tolerates input voltage transients up to +42V for durations ≤1 second, as specified in the Features list and Absolute Maximum Ratings table. This capability is essential for surviving automotive load-dump events without external clamping circuitry.
MAX16904RAUE50/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 5V
- 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:
- 16-TSSOP-EP
MAX16904RAUE50/V+T FAQ
1.How can I place an order for MAX16904RAUE50/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16904RAUE50/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 MAX16904RAUE50/V+T reliable?
The price and inventory of MAX16904RAUE50/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 MAX16904RAUE50/V+T is usually 5 days.
3.What payment methods are accepted for MAX16904RAUE50/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16904RAUE50/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16904RAUE50/V+T?
MAX16904RAUE50/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16904RAUE50/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 MAX16904RAUE50/V+T?
For technical support, including MAX16904RAUE50/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16904RAUE50/V+T requirements.
6.How does Aetrix verify that MAX16904RAUE50/V+T is sourced from the original manufacturer or authorized distributors?
All MAX16904RAUE50/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 MAX16904RAUE50/V+T meets industry standards.
7.What is the process for return or replacement of MAX16904RAUE50/V+T?
All MAX16904RAUE50/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16904RAUE50/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 MAX16904RAUE50/V+T part is unused and in its original packaging.
Return procedure for MAX16904RAUE50/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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