My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX16904RATB50+T
- Part No.:
- MAX16904RATB50+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX16904RATB50+T.pdf
- Description:
- IC REG BUCK 5V 600MA 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,447
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX16904RATB50+T from Maxim Integrated is a synchronous buck DC-DC converter IC with integrated high-side and low-side MOSFETs, delivering 600mA output at fixed 5.0V from 3.5V–28V input. It operates at 2.1MHz (typ), features 25μA quiescent current in SKIP mode, PGOOD monitoring, and AEC-Q100 qualification for automotive power rails.
For engineers reviewing the MAX16904RATB50+T datasheet, MAX16904RATB50+T pinout, MAX16904RATB50+T application, or MAX16904RATB50+T equivalent, this page delivers verified package mapping (10-pin TDFN-EP), validated thermal performance (θJA = 41°C/W), confirmed dropout operation (97% duty cycle), and real-world EMI mitigation via spread-spectrum option (enabled on SATB variants, disabled on RATB).
Technical Context
The MAX16904RATB50+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 state-enables compact 3.3µH/4.7µH inductors and sub-10µF ceramic output capacitance while avoiding AM-band interference.
It integrates undervoltage lockout (3.0V typ), thermal shutdown (175°C), overcurrent protection (1.05A typ), and soft-start (8ms typ). The BST bootstrap circuit sustains >97% duty cycle in dropout, and the exposed-pad TDFN package provides θJC = 9°C/W for automotive under-hood thermal management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +3.5V to +28V; tolerates +42V transients for cold-crank robustness in automotive systems |
| Output Voltage | Fixed 5.0V ±2.5% (fixed-frequency mode); ±4.0% (SKIP mode) across -40°C to +125°C |
| Max Output Current | 600mA continuous; peak current limit 1.05A prevents damage during short-circuit events |
| Quiescent Current | 25μA typical in SKIP mode; enables >10-year battery standby in always-on vehicle modules |
| Switching Frequency | 2.1MHz typical; allows use of <10µF ceramic output caps and eliminates need for EMI filters |
| Package | 10-pin TDFN-EP (3mm × 3mm × 0.75mm); thermally enhanced with exposed pad soldered to PGND |
| AEC-Q100 Grade | Grade -40°C to +125°C; qualified per AEC-Q100 Rev H for automotive power supply applications |
Pinout & Package
MAX16904RATB50+T uses a thermally enhanced 10-pin TDFN-EP package (3mm × 3mm × 0.75mm) with exposed pad connected to PGND. Pin 1 is BST; pins 2 and 3 are SUP and LX respectively; pin 10 is EN. All N.C. pins (9, 10 in TSSOP mapping) are unconnected and must remain floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap capacitor node | Drives high-side FET gate; requires 0.1µF ceramic cap between BST and LX for proper gate charge replenishment |
| SUP | Main power input | Accepts +3.5V to +28V; connect 4.7µF ceramic cap directly to PGND with minimal trace length |
| LX | Switching node | Connects to inductor; high dv/dt node requiring tight layout and guard ring to minimize EMI |
| PGND | Power ground return | Return path for high-current switching loop; must be tied to exposed pad and kept separate from analog GND |
| OUTS | Voltage feedback sense | Monitors regulated output; bypass with ≥10µF X7R ceramic cap to PGND for stability |
| PGOOD | Open-drain status flag | Pulls low when VOUT drops below 91% nominal; requires external 20kΩ pull-up to BIAS or system rail |
| SYNC | Mode control input | GND/unconnected → SKIP mode; BIAS/high → forced PWM; external clock → synchronized operation |
| BIAS | Internal LDO output | +5V supply for logic; decouple with 2.2µF ceramic cap to GND; powers internal bias generator |
| GND | Analog reference ground | Low-noise reference for error amplifier; connect to PGND only at OUTS capacitor return point |
| EN | Enable control | High-voltage compatible (up to +42V); drive HIGH with 3.3V logic or automotive inhibit signals |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 25μA in SKIP mode enables >10-year battery life in always-on telematics modules |
| Dropout operation | 97% max duty cycle maintains regulation down to VIN = VOUT + 0.5V, critical for automotive cold-crank |
| AM-band immunity | 2.1MHz fixed frequency avoids 0.53–1.71MHz AM radio band without filtering |
| Thermal protection | 175°C junction shutdown with 15°C hysteresis ensures reliability in sealed enclosures |
| High-voltage enable | EN pin accepts +3.3V logic up to +42V, eliminating level-shifter needs in 12V/24V systems |
Applications
| Infotainment Power Rail | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers 5V microcontroller, display interface, and audio codec in automotive head units with wide battery voltage swings. IC Role / Device Role / Timing Role: Primary 5V buck regulator with PGOOD sequencing and cold-crank support. Use Value: Maintains stable 5V output during engine start (VIN dips to 3.5V) and load dump (VIN spikes to 42V), ensuring uninterrupted infotainment operation. | Use Scenario: Supplies 5V to image sensor, ISP, and MIPI transmitter in front/rear ADAS cameras. IC Role / Device Role / Timing Role: Compact, high-efficiency DC-DC converter with fast transient response for pixel clock stability. Use Value: 2.1MHz switching enables <10µF output capacitance and <50mV load-step droop, preserving image integrity during motion-triggered capture. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
Use Scenario: Provides always-on 5V rail for CAN transceivers, door-lock actuators, and LIN gateway in BCMs. IC Role / Device Role / Timing Role: Low-quiescent buck regulator with enable-controlled sleep/wake sequencing. Use Value: 25μA SKIP-mode current extends vehicle battery life during weeks-long parking periods without parasitic drain. | Use Scenario: Generates 5V for cellular modem, GNSS receiver, and secure MCU in LTE/5G TCUs. IC Role / Device Role / Timing Role: AEC-Q100 qualified power stage with spread-spectrum EMI reduction for FCC/CE compliance. Use Value: Optional spread-spectrum modulation (on SATB variants) reduces peak radiated emissions by >6dB, easing EMC certification. |
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 | 4.5V–36V input; 8A output; 2.1MHz; no integrated PGOOD; QFN-16 package | Higher current, no automotive qualification; suited for industrial 5V rails, not safety-critical automotive | Select LM61480RQWR only if >1A output and non-automotive qualification are acceptable |
| TPS62933RTER | 3V–18V input; 3A output; 1.8MHz; 15μA IQ; WQFN-16; no AEC-Q100 | Lower IQ but narrower VIN range; lacks +42V transient tolerance and automotive temp grade | Choose TPS62933RTER for consumer-grade 5V supplies where cold-crank immunity is unnecessary |
Compared with LM61480RQWR and TPS62933RTER, MAX16904RATB50+T uniquely combines AEC-Q100 qualification, +42V transient tolerance, 25μA SKIP-mode IQ, and 10-pin TDFN size-making it the only drop-in solution for space-constrained, safety-compliant automotive 5V rails.
Availability
MAX16904RATB50+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 voltage ranges.
Supply support for MAX16904RATB50+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-grade power management portfolio, engineered specifically for high-input-voltage DC-DC conversion in harsh environments with strict EMI, thermal, and reliability requirements.
FAQ
What is the exact output voltage tolerance of MAX16904RATB50+T across temperature and load?
The MAX16904RATB50+T delivers a fixed 5.0V output with ±2.5% accuracy over -40°C to +125°C and 0–600mA load in forced fixed-frequency mode. In SKIP mode, tolerance widens to ±4.0% due to variable frequency operation, as specified in the Electrical Characteristics table (page 3 of datasheet).
Does MAX16904RATB50+T support external synchronization, and what frequency range is accepted?
Yes, MAX16904RATB50+T supports external synchronization via the SYNC pin. When driven with a clean clock signal, it locks to frequencies between 1.8MHz and 2.6MHz, enabling precise EMI alignment with other system clocks and reducing spectral peaks.
Is MAX16904RATB50+T pin-compatible with other variants in the MAX16904 family?
Yes, all MAX16904 variants-including MAX16904RATB50+T, MAX16904RAUE50/V+, and MAX16904SATB50/V+-share identical 10-pin TDFN-EP pinouts and footprints. Only the spread-spectrum enable and top-mark codes differ; no PCB redesign is needed when upgrading to spread-spectrum versions.
What thermal performance can be expected from MAX16904RATB50+T in a standard 4-layer board layout?
On a JEDEC-standard 4-layer board, MAX16904RATB50+T achieves θJA = 41°C/W and θJC = 9°C/W. With the exposed pad properly soldered to a 200mm² PGND copper area and 4× thermal vias, junction-to-ambient rise is ≤41°C at 600mA full load, well within the +125°C ambient limit.
How does the PGOOD function behave during startup and fault conditions for MAX16904RATB50+T?
PGOOD on MAX16904RATB50+T asserts high after VOUT exceeds 93% of 5.0V (4.65V) and remains high until VOUT falls below 91% (4.55V). During soft-start, it stays low until regulation is achieved; during overcurrent or thermal shutdown, it pulls low within 10µs debounce time to signal fault.
MAX16904RATB50+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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TDFN (3x3)
MAX16904RATB50+T FAQ
1.How can I place an order for MAX16904RATB50+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16904RATB50+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 MAX16904RATB50+T reliable?
The price and inventory of MAX16904RATB50+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16904RATB50+T is usually 5 days.
3.What payment methods are accepted for MAX16904RATB50+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16904RATB50+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16904RATB50+T?
MAX16904RATB50+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16904RATB50+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 MAX16904RATB50+T?
For technical support, including MAX16904RATB50+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16904RATB50+T requirements.
6.How does Aetrix verify that MAX16904RATB50+T is sourced from the original manufacturer or authorized distributors?
All MAX16904RATB50+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 MAX16904RATB50+T meets industry standards.
7.What is the process for return or replacement of MAX16904RATB50+T?
All MAX16904RATB50+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16904RATB50+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 MAX16904RATB50+T part is unused and in its original packaging.
Return procedure for MAX16904RATB50+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX16904RATB50+T Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
