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Analog Devices Inc./Maxim Integrated MAX16904RATB55/V+T
- Part No.:
- MAX16904RATB55/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX16904RATB55/V+T.pdf
- Description:
- IC REG BUCK 5.5V 600MA 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,361
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Product details
Overview
The MAX16904RATB55/V+T from Maxim Integrated is a synchronous buck DC-DC converter IC delivering 600mA output with 5.5V fixed output voltage, +3.5V to +28V input range, 2.1MHz switching frequency, and 25μA no-load quiescent current-designed for automotive power rails in engine control units and ADAS camera modules.
For engineers reviewing the MAX16904RATB55/V+T datasheet, MAX16904RATB55/V+T pinout, MAX16904RATB55/V+T application, or MAX16904RATB55/V+T equivalent, key selection criteria include AEC-Q100 qualification, -40°C to +125°C operation, 10-pin TDFN-EP package with exposed pad, spread-spectrum disable status, and PGOOD monitoring capability.
Technical Context
This current-mode synchronous buck regulator integrates high-side and low-side DMOS FETs (RON,HS = 400–800mΩ, RON,LS = 250–450mΩ) and operates across three modes: SKIP (25μA IQ), forced fixed-frequency PWM, and external clock synchronization (1.8–2.6MHz). It maintains regulation down to 97% duty cycle in dropout and features internal soft-start (8ms typical) and thermal shutdown at 175°C.
Its architecture includes an integrated bootstrap driver (BST pin), voltage-sense feedback via OUTS, open-drain PGOOD with 91–94% threshold hysteresis, and EN input compatible from 3.3V logic up to +42V transients-enabling direct connection to automotive battery rails without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.5V ±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 1.05A typical |
| Switching Frequency | 2.1MHz typical; programmable via SYNC pin (1.8–2.6MHz) |
| Quiescent Current | 25μA typical in SKIP mode at no load; 1mA in continuous no-switching mode |
| Operating Temp | -40°C to +125°C ambient; junction limit +150°C |
| Package | 10-pin TDFN-EP (3mm × 3mm × 0.75mm); exposed pad soldered to PGND |
Pinout & Package
MAX16904RATB55/V+T is housed in a thermally enhanced 10-pin TDFN-EP package (outline 21-0137) with exposed pad connected to PGND. The pinout supports compact automotive PCB layouts with dedicated BST, SUP, LX, PGND, OUTS, PGOOD, SYNC, BIAS, GND, and EN terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap capacitor node | Drives high-side FET gate; requires 0.1µF ceramic cap to LX |
| SUP | Main power input | +3.5V to +28V supply; connect 4.7µF ceramic cap close to pin |
| LX | Switching node | Connects to inductor; high-impedance when off; critical for EMI control |
| PGND | Power ground return | Low-impedance path for high-current switch return; tie to exposed pad |
| OUTS | Voltage sense input | Feedback node; bypass with ≥10µF X7R ceramic to PGND |
| PGOOD | Open-drain status signal | Pulls low if VOUT < 91% nominal; requires external 20kΩ pull-up |
| SYNC | Mode control input | GND/unconnected → SKIP mode; BIAS/clock → forced PWM |
| BIAS | Internal LDO output | +5V logic supply; bypass with 2.2µF ceramic to GND |
| GND | Analog reference ground | Separate from PGND; connect to PGND only at output capacitor return |
| EN | Enable control | High-voltage compatible (3.3V–42V); no internal pullup/pulldown |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Validated for automotive applications per Grade 0 (-40°C to +125°C) |
| Spread-spectrum disabled | No frequency modulation applied; fixed 2.1MHz operation unless externally synchronized |
| Dropout operation | Maintains regulation at >97% duty cycle; enables use in cold-crank scenarios |
| Ultra-low IQ in SKIP | 25μA typical no-load current extends battery life in always-on systems |
| Integrated protection | Overcurrent (1.05A), thermal shutdown (175°C), UVLO (3.0V typ), and PGOOD monitoring |
Applications
| Automotive Engine Control Unit (ECU) | ADAS Camera Power Supply |
|---|---|
Use Scenario: Powers microcontroller, CAN transceiver, and sensor interface in under-hood ECU exposed to wide temperature and load transients. IC Role / Device Role / Timing Role: Primary 5.5V rail generator converting 12V/24V battery to stable logic supply. Use Value: Withstands +42V load dump and cold-crank dips to 2.8V while maintaining PGOOD assertion and 600mA delivery. | Use Scenario: Supplies image sensor and ISP in forward-facing camera module requiring low EMI and fast transient response. IC Role / Device Role / Timing Role: Synchronous buck regulator with 2.1MHz switching enabling small 3.3µH inductor and minimal board area. Use Value: SKIP mode reduces standby current to 25μA; PGOOD enables system-level fault detection before image capture. |
| Industrial Motor Drive Controller | Railway Onboard Telematics |
Use Scenario: Powers FPGA configuration circuitry and isolated communication interfaces in motor drive I/O modules. IC Role / Device Role / Timing Role: High-input-voltage DC-DC stage converting 24V industrial bus to 5.5V logic rail. Use Value: 10-pin TDFN-EP package enables dense layout; thermal shutdown protects against enclosure overheating. | Use Scenario: Supplies GPS receiver and cellular modem in train-mounted telematics unit operating across wide input voltage swings. IC Role / Device Role / Timing Role: Input-tolerant buck converter providing clean 5.5V rail during battery transitions and regenerative braking events. Use Value: 97% dropout duty cycle sustains operation during 12V brownouts; AEC-Q100 qualification ensures reliability in rolling stock environments. |
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 option, QFN-16 | Higher current capacity; lacks AEC-Q100 qualification; larger footprint | Select when >600mA output or non-automotive industrial use is required |
| TPS62933RTER | 3–18V input, 3A output, 1.8–4MHz adjustable, integrated compensation, WQFN-16 | Wider frequency adjustability; lower max input; no +42V transient tolerance | Prefer for space-constrained designs needing higher efficiency at light loads and tighter output accuracy |
Compared with LM61480RQWR and TPS62933RTER, the MAX16904RATB55/V+T offers automotive-grade reliability, superior input transient tolerance (+42V), and optimized 600mA performance in a compact 10-pin TDFN-making it uniquely suited for cost- and size-sensitive automotive subsystems where AEC-Q100 compliance is mandatory.
Availability
MAX16904RATB55/V+T is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, and industrial motor drive controllers requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MAX16904RATB55/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 demanding industrial, automotive, and communications applications.
The MAX16904 belongs to Maxim's automotive-qualified mini-buck converter family, engineered specifically for high-input-voltage, low-quiescent-current power conversion in space-constrained automotive electronics.
FAQ
What is the output voltage of the MAX16904RATB55/V+T?
The MAX16904RATB55/V+T delivers a factory-trimmed fixed output voltage of 5.5V with ±2.5% accuracy in forced fixed-frequency mode and ±4.0% in SKIP mode across the full -40°C to +125°C temperature range. This value is confirmed in the Selector Guide and electrical characteristics table of the official datasheet.
Does the MAX16904RATB55/V+T support spread-spectrum frequency modulation?
No, the MAX16904RATB55/V+T does not include spread-spectrum frequency modulation. Its ordering code "R" (as in RATB) indicates the spread-spectrum option is disabled, unlike "S"-prefixed variants (e.g., SATB). The device operates at its nominal 2.1MHz switching frequency unless synchronized externally via the SYNC pin.
What package type is used for the MAX16904RATB55/V+T?
The MAX16904RATB55/V+T uses a 10-pin TDFN-EP (3mm × 3mm × 0.75mm) package with exposed pad, designated by "TB" in the part number. This thermally enhanced package has JEDEC outline number 21-0137 and requires soldering the exposed pad to PGND for optimal thermal performance.
Is the MAX16904RATB55/V+T qualified for automotive applications?
Yes, the MAX16904RATB55/V+T is AEC-Q100 qualified (Grade 0) and rated for operation from -40°C to +125°C ambient temperature. The "/V+" suffix explicitly denotes automotive qualification, including validation for load dump, cold crank, and extended temperature cycling per automotive reliability standards.
What is the maximum continuous output current of the MAX16904RATB55/V+T?
The MAX16904RATB55/V+T guarantees a minimum continuous output current of 600mA across its full operating temperature and input voltage range. Its overcurrent protection triggers at 1.05A typical, and thermal shutdown activates at 175°C junction temperature-ensuring safe operation under sustained load conditions.
MAX16904RATB55/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:
- 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):
- 5.5V
- 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:
- 10-TDFN (3x3)
MAX16904RATB55/V+T FAQ
1.How can I place an order for MAX16904RATB55/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16904RATB55/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 MAX16904RATB55/V+T reliable?
The price and inventory of MAX16904RATB55/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 MAX16904RATB55/V+T is usually 5 days.
3.What payment methods are accepted for MAX16904RATB55/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16904RATB55/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16904RATB55/V+T?
MAX16904RATB55/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16904RATB55/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 MAX16904RATB55/V+T?
For technical support, including MAX16904RATB55/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16904RATB55/V+T requirements.
6.How does Aetrix verify that MAX16904RATB55/V+T is sourced from the original manufacturer or authorized distributors?
All MAX16904RATB55/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 MAX16904RATB55/V+T meets industry standards.
7.What is the process for return or replacement of MAX16904RATB55/V+T?
All MAX16904RATB55/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16904RATB55/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 MAX16904RATB55/V+T part is unused and in its original packaging.
Return procedure for MAX16904RATB55/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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