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Analog Devices Inc./Maxim Integrated MAX16904SATB55/V+T
- Part No.:
- MAX16904SATB55/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX16904SATB55/V+T.pdf
- Description:
- IC REG BUCK 5.5V 600MA 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,937
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Product details
Overview
The MAX16904SATB55/V+T from Maxim Integrated is a synchronous buck DC-DC converter delivering 600mA output at fixed 5.5V with integrated high-side and low-side MOSFETs, operating from +3.5V to +28V input (tolerating +42V transients), featuring 2.1MHz switching, 25μA quiescent current in SKIP mode, and AEC-Q100 qualification for automotive power rails.
For engineers reviewing the MAX16904SATB55/V+T datasheet, MAX16904SATB55/V+T pinout, MAX16904SATB55/V+T application, or MAX16904SATB55/V+T equivalent, key selection criteria include its spread-spectrum EMI reduction, dropout operation at 97% duty cycle, PGOOD monitoring, thermal shutdown at +175°C, and compatibility with 3mm × 3mm TDFN-EP packaging for space-constrained automotive modules.
Technical Context
The MAX16904SATB55/V+T implements current-mode control with internal slope compensation and no external compensation required. Its 2.1MHz fixed-frequency PWM operation-selectable via SYNC pin between forced-PWM, SKIP, and external sync modes-enables compact 3.3µH–5.6µH inductors and sub-10µF ceramic output capacitance while avoiding AM-band interference.
It integrates undervoltage lockout (3.0V typ), soft-start (8ms typ), overcurrent protection (1.05A typ), and thermal shutdown (+175°C). The BST bootstrap circuit sustains >97% duty cycle in dropout, and the exposed pad (EP) must be soldered to PGND for thermal and electrical integrity per JEDEC JESD51-7 four-layer board layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +3.5V to +28V; withstands +42V transients for cold-crank immunity in automotive systems |
| Output Voltage | Fixed 5.5V ±2.5% (fixed-frequency mode); ±4.0% in SKIP mode across -40°C to +125°C |
| Max Output Current | 600mA continuous; peak current limit 1.05A prevents damage during short-circuit events |
| Switching Frequency | 2.1MHz typical; supports small magnetics and low output ripple; spread-spectrum option ±6% reduces EMI peaks |
| Quiescent Current | 25μA typical in SKIP mode at no load; enables battery-sensitive always-on automotive subsystems |
| Operating Temp | -40°C to +125°C ambient; AEC-Q100 qualified for under-hood and infotainment applications |
| Package | 10-pin TDFN-EP (3mm × 3mm × 0.75mm); exposed pad thermally connected to PGND |
Pinout & Package
MAX16904SATB55/V+T uses a thermally enhanced 10-pin TDFN-EP package (outline 21-0137, land pattern 90-0003) with exposed pad (EP) requiring connection to PGND. Pin 1 is BST; pins 2 and 3 are SUP (dual-input for low-impedance path); pins 4 and 5 are LX (dual-switch node); pin 6 is PGND; pin 7 is OUTS; pin 8 is PGOOD; pin 9 is SYNC; pin 10 is BIAS; pin 11 is GND; pin 12 is EN; pins 13–16 are N.C. (not internally connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap capacitor node | Drives high-side MOSFET gate; requires 0.1µF ceramic cap to LX for proper gate charge replenishment |
| SUP | Main power input | Dual pins (2 & 3) must be paralleled; connect 4.7µF ceramic cap directly adjacent to minimize high-frequency noise |
| LX | Switching node | Dual pins (4 & 5) must be paralleled; carries high di/dt; routing must be short and wide to reduce EMI |
| PGND | Power ground return | Single pin (6); connects to PCB ground plane and exposed pad; separates high-current return from analog GND |
| OUTS | Voltage feedback sense | Connects to output capacitor; bypass with ≥10µF X7R ceramic to PGND for stability and transient response |
| PGOOD | Open-drain status signal | Pulls low when VOUT drops below 91% nominal; requires external 20kΩ pullup to BIAS or system rail |
| SYNC | Mode control input | GND/unconnected → SKIP mode; BIAS or clock signal → forced PWM; enables dynamic efficiency optimization |
| BIAS | Internal LDO output | +5V supply for logic; decouple with 2.2µF ceramic to GND; powers internal circuits and PGOOD pullup |
| GND | Analog reference ground | Separate from PGND; tie to PGND only at output capacitor return point to avoid noise coupling |
| EN | Enable control | High-voltage compatible (3.3V–42V logic); active-high; no internal pullup/pulldown to preserve ultra-low IQ |
Key Features
| Feature | Design Value |
|---|---|
| Spread-spectrum modulation | ±6% frequency dithering reduces peak radiated EMI without compromising AM-band immunity |
| Dropout operation | Maintains regulation at >97% duty cycle, enabling stable 5.5V output even during 6V cold-crank conditions |
| Ultra-low quiescent current | 25μA in SKIP mode enables always-on telematics and ADAS modules without battery drain |
| Integrated current-limit protection | 1.05A peak threshold with automatic soft-start retry prevents latch-up during load faults |
| Thermal shutdown with hysteresis | Shuts down at +175°C junction; restarts after +15°C cooldown to prevent thermal cycling damage |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers SoC, display controller, and audio codec in head-unit systems with wide battery voltage variation (6V–16V). IC Role / Device Role / Timing Role: Primary 5.5V buck regulator with PGOOD monitoring for system sequencing and fault reporting. Use Value: 25μA quiescent current extends battery life in accessory-off state; spread-spectrum EMI compliance meets CISPR 25 Class 5 requirements. | Use Scenario: Supplies image sensor and ISP in rear-view or surround-view cameras mounted near engine bay. IC Role / Device Role / Timing Role: High-reliability 5.5V DC-DC converter with cold-crank support and thermal shutdown for under-hood deployment. Use Value: Withstands +42V load-dump transients and operates continuously at +125°C ambient; AEC-Q100 qualification ensures long-term field reliability. |
| Industrial CAN Gateway Power | Automotive Body Control Module (BCM) |
Use Scenario: Generates isolated 5.5V rail for CAN transceivers and microcontroller in vehicle-to-infrastructure gateways. IC Role / Device Role / Timing Role: Input-filtered buck stage providing clean, regulated power independent of noisy 24V industrial bus. Use Value: 2.1MHz switching allows small LC filter components; SYNC pin enables synchronization with other converters to avoid beat frequencies. | Use Scenario: Powers microcontroller, LIN transceivers, and LED drivers in door modules and lighting controllers. IC Role / Device Role / Timing Role: Compact, thermally robust 5.5V supply with enable control tied to ignition switch and CAN wake-up signals. Use Value: 10-pin TDFN-EP footprint saves PCB area; EN pin's 3.3V–42V compatibility simplifies interface with automotive logic levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480QRTWRQ1 | 4.5V–36V input; 8A output; no spread-spectrum; QFN-16 package; higher IQ (26μA) | Targeted at higher-current body electronics; lacks 5.5V factory-trimmed option | Select when >1A output or wider VIN range is required; verify layout compatibility with larger package |
| TPS62933QPWRRQ1 | 3V–18V input; 3A output; 2.2MHz; no spread-spectrum; WQFN-16; 15μA IQ | Optimized for lower-VIN ADAS domains; not rated for 42V transients or cold-crank | Prefer for 12V-only systems needing ultra-low IQ; unsuitable for direct 24V/42V battery interface |
Compared with LM61480QRTWRQ1 and TPS62933QPWRRQ1, the MAX16904SATB55/V+T offers factory-trimmed 5.5V output, integrated spread-spectrum EMI reduction, and guaranteed +42V transient tolerance-making it uniquely suited for compact, cost-sensitive 600mA automotive rails where board space and EMC certification are critical.
Availability
MAX16904SATB55/V+T is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and body control units requiring stable component supply, AEC-Q100 compliance, and long-lifecycle availability.
Supply support for MAX16904SATB55/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 high-voltage, low-quiescent-current buck converters optimized for automotive power rails-specifically targeting infotainment, ADAS, and body electronics where space, thermal performance, and EMI compliance are critical.
FAQ
What is the output voltage accuracy of the MAX16904SATB55/V+T over temperature and load?
The MAX16904SATB55/V+T delivers 5.5V output with ±2.5% accuracy across -40°C to +125°C ambient and 0–600mA load in fixed-frequency mode. In SKIP mode, accuracy degrades to ±4.0% due to variable on-time control. This specification is guaranteed by design and verified across process corners, ensuring reliable regulation in automotive environments where voltage tolerance directly impacts downstream logic and sensor interfaces.
Does the MAX16904SATB55/V+T require external compensation components?
No, the MAX16904SATB55/V+T uses internal current-mode control with built-in slope compensation and does not require external compensation networks. Its loop stability is factory-tuned for standard 3.3µH–5.6µH inductors and 10µF ceramic output capacitors. This eliminates design iteration time and PCB area typically needed for type-II or type-III compensators in voltage-mode buck regulators.
How does the SYNC pin affect the operation of the MAX16904SATB55/V+T?
The SYNC pin on the MAX16904SATB55/V+T selects among three modes: grounded or floating → SKIP mode (25μA IQ); driven to BIAS or external clock → forced PWM mode (constant 2.1MHz); externally clocked within 1.8–2.6MHz → synchronized operation. This enables dynamic trade-offs between light-load efficiency and EMI predictability without hardware changes.
What thermal management provisions are built into the MAX16904SATB55/V+T?
The MAX16904SATB55/V+T features thermal shutdown at +175°C junction temperature with +15°C hysteresis, and its 10-pin TDFN-EP package includes an exposed pad (EP) designed for direct soldering to PGND and large copper planes. Thermal resistance is θJA = 41°C/W on a four-layer board, enabling full 600mA output at +125°C ambient when properly laid out per JEDEC JESD51-7 guidelines.
Is the MAX16904SATB55/V+T pin-compatible with other variants in the MAX16904 family?
Yes, all MAX16904 variants-including MAX16904SATB55/V+T, MAX16904RATB50/V+, and MAX16904SATB33/V+-share identical 10-pin TDFN-EP pinouts and footprints. Output voltage is factory-trimmed and non-adjustable; swapping variants requires only firmware or system-level validation-not PCB redesign-making it ideal for platform-based automotive programs with multiple voltage requirements.
MAX16904SATB55/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):
- 5.5V
- 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)
MAX16904SATB55/V+T FAQ
1.How can I place an order for MAX16904SATB55/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16904SATB55/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 MAX16904SATB55/V+T reliable?
The price and inventory of MAX16904SATB55/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 MAX16904SATB55/V+T is usually 5 days.
3.What payment methods are accepted for MAX16904SATB55/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16904SATB55/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16904SATB55/V+T?
MAX16904SATB55/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16904SATB55/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 MAX16904SATB55/V+T?
For technical support, including MAX16904SATB55/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16904SATB55/V+T requirements.
6.How does Aetrix verify that MAX16904SATB55/V+T is sourced from the original manufacturer or authorized distributors?
All MAX16904SATB55/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 MAX16904SATB55/V+T meets industry standards.
7.What is the process for return or replacement of MAX16904SATB55/V+T?
All MAX16904SATB55/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16904SATB55/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 MAX16904SATB55/V+T part is unused and in its original packaging.
Return procedure for MAX16904SATB55/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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