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Analog Devices Inc./Maxim Integrated MAX16904RAUE33/V+T
- Part No.:
- MAX16904RAUE33/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MAX16904RAUE33/V+T.pdf
- Description:
- IC REG BUCK 3.3V 600MA 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,799
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Product details
Overview
The MAX16904RAUE33/V+T from Maxim Integrated is a synchronous buck DC-DC converter delivering 600mA output at fixed 3.3V with input range +3.5V to +28V, 2.1MHz switching frequency, 25μA no-load quiescent current, and AEC-Q100 qualification for automotive power rails.
For engineers reviewing the MAX16904RAUE33/V+T datasheet, MAX16904RAUE33/V+T pinout, MAX16904RAUE33/V+T application, or MAX16904RAUE33/V+T equivalent, this page provides verified package mapping (16-pin TSSOP-EP), confirmed thermal shutdown (175°C), PGOOD monitoring, spread-spectrum disable status, and automotive-grade transient tolerance (+42V).
Technical Context
This current-mode buck regulator integrates high-side and low-side DMOS switches (RON,HS = 400–800mΩ, RON,LS = 250–450mΩ) and operates in three modes: SKIP (25μA IQ), forced fixed-frequency (2.1MHz), or external synchronization (1.8–2.6MHz). It maintains regulation down to 97% duty cycle in dropout.
It features internal soft-start (8ms ramp), undervoltage lockout (3.0V typ), thermal shutdown (175°C), and open-drain PGOOD with 91–94% falling threshold. The device uses no external compensation and supports ±6% spread-spectrum modulation only when enabled - not applicable to MAX16904RAUE33/V+T.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±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; supports SYNC input (1.8–2.6MHz) or SKIP mode |
| Quiescent Current | 25μA typical in SKIP mode at no load; 1mA in continuous no-switching mode |
| Operating Temperature | -40°C to +125°C ambient; junction limit +150°C |
| Package Thermal Resistance | θJA = 38.3°C/W (TSSOP-EP, 4-layer board) |
Pinout & Package
MAX16904RAUE33/V+T is housed in a thermally enhanced 16-pin TSSOP-EP package (5mm × 4.4mm, exposed pad). The EP must be soldered to PGND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SUP (Pins 2,3) | Input voltage supply | Accepts +3.5V to +28V; requires 4.7µF ceramic capacitor placed adjacent to pins |
| LX (Pins 4,5) | Switching node | Connects to inductor; high-impedance when off; both pins must be shorted externally |
| PGND (Pins 6,7) | Power ground return | Low-impedance path for LX and output capacitor; both pins must be shorted and tied to EP |
| OUTS (Pin 8) | Voltage sense input | Feedback node; bypassed with ≥10µF X7R ceramic capacitor to PGND |
| PGOOD (Pin 11) | Open-drain power-good flag | Pulls low if VOUT < 91% nominal; requires external 20kΩ pull-up to BIAS or system rail |
| SYNC (Pin 12) | Mode control input | GND/unconnected → SKIP mode; BIAS or clock signal → forced PWM mode |
| BIAS (Pin 13) | Internal +5V logic supply | Provides regulated bias for internal circuitry; bypass with 2.2µF ceramic to GND |
| GND (Pin 14) | Analog ground reference | Separate from PGND; connect to PGND only at output capacitor return point |
| EN (Pin 15) | Enable control | High-voltage compatible (3.3V logic to +42V); no internal pullup/pulldown |
| BST (Pin 16) | Bootstrap capacitor connection | Drives high-side gate; requires 0.1µF ceramic capacitor between BST and LX |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 25μA in SKIP mode enables >10-year battery standby in always-on automotive modules |
| Dropout operation | 97% max duty cycle allows regulation with VIN as low as VOUT + 0.3V under light loads |
| Transient robustness | Tolerates +42V input spikes per ISO 7637-2 Pulse 5a, eliminating need for upstream TVS in many designs |
| EMI mitigation | 2.1MHz fixed frequency avoids AM band (0.53–1.71MHz); no spread-spectrum on this variant |
| Thermal reliability | Thermal shutdown at 175°C with 15°C hysteresis prevents latch-up during sustained overload |
Applications
| Infotainment Power Rail | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers SoC, display interface, and audio codec in head-unit systems with wide battery variation (6V–16V cold-crank to load-dump). IC Role / Device Role / Timing Role: Primary 3.3V buck regulator delivering stable 600mA with PGOOD sequencing and thermal fault reporting. Use Value: Maintains regulation during 6V cold-crank events via 97% duty cycle; 25μA IQ extends backup battery life in sleep mode. | Use Scenario: Supplies image sensor and ISP in rear-view or surround-view cameras mounted in vehicle exterior zones. IC Role / Device Role / Timing Role: High-reliability 3.3V DC-DC converter operating across -40°C to +125°C ambient with AEC-Q100 qualification. Use Value: Withstands +42V transients without external protection; exposed-pad TSSOP ensures thermal stability in sealed enclosures. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
Use Scenario: Powers microcontroller, CAN transceiver, and door-lock actuators in centralized body electronics with shared 12V rail. IC Role / Device Role / Timing Role: Enable-controlled 3.3V supply with programmable UVLO via resistor divider on EN pin. Use Value: EN pin accepts direct connection to 3.3V MCU GPIO or high-voltage wake signals; PGOOD enables safe firmware boot sequencing. | Use Scenario: Provides clean 3.3V rail for LTE modem, GNSS receiver, and secure element in cellular-connected vehicle gateways. IC Role / Device Role / Timing Role: Low-noise, EMI-optimized buck converter with 2.1MHz switching to avoid interference with RF front-end. Use Value: Fixed-frequency operation eliminates beat frequencies with cellular bands; 10µF output capacitor meets ripple requirements for sensitive RF ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16904RATB33/V+ | Same 3.3V output, but in 10-pin TDFN-EP (3mm × 3mm); θJA = 41°C/W vs. 38.3°C/W | Better suited for space-constrained PCBs; lower thermal mass may require tighter layout control | Select when board area is critical and thermal margin permits higher junction rise |
| TPS62130AQRGTRQ1 | 3.3V fixed, 3A output, 2.5MHz, 17μA IQ; QFN-16 package; AEC-Q100 Grade 1 | Higher current capability and lower IQ, but lacks +42V transient tolerance and 97% dropout support | Choose for higher-power applications where input transients are clamped externally |
Compared with MAX16904RATB33/V+, the MAX16904RAUE33/V+T offers superior thermal dissipation in TSSOP-EP and simplified layout for high-current paths; versus TPS62130AQRGTRQ1, it delivers guaranteed +42V transient survival and deeper dropout - critical for unregulated automotive battery inputs.
Availability
MAX16904RAUE33/V+T is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and body control units requiring stable component supply across extended temperature and transient conditions.
Supply support for MAX16904RAUE33/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 subsystems where battery voltage fluctuation, thermal stress, and EMI compliance are critical design constraints.
FAQ
What is the exact output voltage tolerance of the MAX16904RAUE33/V+T in fixed-frequency mode?
The MAX16904RAUE33/V+T delivers 3.3V output with ±2.5% accuracy over full load (0–600mA), input (6–18V), and temperature (-40°C to +125°C) in forced fixed-frequency mode. This is specified in the Electrical Characteristics table under VOUT,3.3V parameter.
Does the MAX16904RAUE33/V+T include spread-spectrum frequency modulation?
No, the MAX16904RAUE33/V+T does not include spread-spectrum modulation. Its ordering code lacks the 'S' prefix (e.g., MAX16904SATB33/V+ has spread-spectrum; MAX16904RAUE33/V+ does not), and the Selector Guide confirms 'Disabled' for spread-spectrum in its row.
What is the maximum allowable input voltage transient for the MAX16904RAUE33/V+T?
The MAX16904RAUE33/V+T tolerates input voltage transients up to +42V for durations ≤1 second, as stated in the Absolute Maximum Ratings and Features sections. This enables direct connection to automotive battery rails without external TVS diodes in many ISO 7637-2 compliant designs.
How is thermal performance different between the TSSOP-EP and TDFN-EP packages of the MAX16904RAUE33/V+T?
The MAX16904RAUE33/V+T uses the 16-pin TSSOP-EP package with θJA = 38.3°C/W (4-layer board), offering lower junction-to-ambient resistance than the 10-pin TDFN-EP variant (θJA = 41°C/W). This translates to ~3°C lower junction temperature at identical power dissipation and layout.
Can the MAX16904RAUE33/V+T operate in dropout, and what is the minimum input voltage for regulation at full load?
Yes, the MAX16904RAUE33/V+T supports dropout operation with up to 97% duty cycle. At full 600mA load and 3.3V output, it maintains regulation down to approximately VIN = 3.4V (VOUT + dropout voltage), as confirmed by the dropout behavior description and typical operating characteristics showing stable VOUT during cold-crank simulation.
MAX16904RAUE33/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:
- 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):
- 3.3V
- 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
MAX16904RAUE33/V+T FAQ
1.How can I place an order for MAX16904RAUE33/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16904RAUE33/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 MAX16904RAUE33/V+T reliable?
The price and inventory of MAX16904RAUE33/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 MAX16904RAUE33/V+T is usually 5 days.
3.What payment methods are accepted for MAX16904RAUE33/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16904RAUE33/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16904RAUE33/V+T?
MAX16904RAUE33/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16904RAUE33/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 MAX16904RAUE33/V+T?
For technical support, including MAX16904RAUE33/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16904RAUE33/V+T requirements.
6.How does Aetrix verify that MAX16904RAUE33/V+T is sourced from the original manufacturer or authorized distributors?
All MAX16904RAUE33/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 MAX16904RAUE33/V+T meets industry standards.
7.What is the process for return or replacement of MAX16904RAUE33/V+T?
All MAX16904RAUE33/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16904RAUE33/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 MAX16904RAUE33/V+T part is unused and in its original packaging.
Return procedure for MAX16904RAUE33/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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