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Analog Devices Inc./Maxim Integrated MAX16904SATB52/V+T
- Part No.:
- MAX16904SATB52/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX16904SATB52/V+T.pdf
- Description:
- IC REG BUCK 5.2V 600MA 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,039
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Product details
Overview
The MAX16904SATB52/V+T from Maxim Integrated is a synchronous buck DC-DC converter delivering 600mA output with 5.2V fixed output voltage, +3.5V to +28V input range, 2.1MHz switching frequency, and 25μA quiescent current in SKIP mode-designed for automotive power rails requiring high-voltage tolerance and AEC-Q100 compliance.
For engineers reviewing the MAX16904SATB52/V+T datasheet, MAX16904SATB52/V+T pinout, MAX16904SATB52/V+T application, or MAX16904SATB52/V+T equivalent, this page provides verified package mapping (10-pin TDFN-EP), confirmed spread-spectrum EMI reduction, thermal shutdown at 175°C, PGOOD monitoring, and validated alternative options for 5.2V automotive buck conversion.
Technical Context
The MAX16904SATB52/V+T implements current-mode control with integrated high-side (400–800mΩ) and low-side (250–450mΩ) DMOS switches, enabling dropout operation at 97% duty cycle. Its 2.1MHz internal oscillator supports three modes: forced PWM, SKIP (25μA IQ), and external synchronization (1.8–2.6MHz).
Spread-spectrum modulation (+6% frequency dither) is enabled on this variant to reduce radiated EMI without compromising AM-band immunity. The device features undervoltage lockout (3.0V typ), soft-start (8ms typ), and thermal shutdown (175°C) with 15°C hysteresis-fully specified across −40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.2V ±2.5% (fixed-frequency mode), ±4.0% (SKIP mode)-tight regulation for automotive microcontroller I/O rails. |
| Input Voltage Range | +3.5V to +28V continuous; withstands +42V transients-supports cold-crank and load-dump conditions in 12V/24V systems. |
| Switching Frequency | 2.1MHz typical (1.925–2.275MHz); synchronized externally from 1.8–2.6MHz-enables compact 3.3–4.7µH inductors and <10µF ceramic output caps. |
| Quiescent Current | 25μA typical in SKIP mode at no load-extends battery life in always-on automotive modules (e.g., CAN gateways, body controllers). |
| Output Current | 600mA minimum guaranteed; peak current limit 1.05A-supports dual-core MCUs, sensors, and interface ICs with margin. |
| Thermal Protection | Junction shutdown at 175°C with 15°C hysteresis-prevents latch-up during sustained overload or poor heatsinking. |
| EMI Reduction | Enabled spread-spectrum modulation (+6% frequency deviation)-lowers peak radiated emissions without external filtering. |
Pinout & Package
MAX16904SATB52/V+T uses a thermally enhanced 10-pin TDFN-EP package (3mm × 3mm × 0.75mm) with exposed pad soldered to PGND for optimal thermal performance (θJA = 41°C/W on 4-layer board).
| 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; must be decoupled with 4.7µF ceramic cap placed adjacent to pin to suppress high-frequency ripple. |
| LX | Switching node | Connects to inductor; high dv/dt node-requires short, low-inductance trace to minimize EMI and ringing. |
| PGND | Power ground return | Carries high pulsed currents; must be tied directly to exposed pad and output capacitor negative terminal. |
| OUTS | Voltage feedback sense | Monitors regulated output; bypassed with ≥10µF X7R ceramic cap to PGND for stability and transient response. |
| PGOOD | Open-drain power-good flag | Asserts high when VOUT ≥ 93% of nominal (4.84V); pulls low at ≤91% (4.73V)-used for system sequencing and fault detection. |
| SYNC | Mode control and sync input | GND/unconnected enables SKIP mode; BIAS or external clock forces PWM-allows dynamic efficiency vs. EMI trade-off. |
| BIAS | Internal LDO output | +5V supply for logic; decoupled with 2.2µF ceramic cap to GND-also serves as pull-up source for PGOOD. |
| GND | Analog reference ground | Separate from PGND; connects to system analog ground plane-must tie to PGND only at single point (output cap return). |
| EN | Enable input | High-voltage compatible (up to +42V); VIH = 2.4V min-directly driven by 3.3V MCU GPIO or automotive wake-up signals. |
Key Features
| Feature | Design Value |
|---|---|
| Spread-spectrum EMI reduction | +6% frequency dither enabled-reduces peak radiated emissions without altering average switching frequency or compromising AM-band immunity. |
| Ultra-low quiescent current | 25μA in SKIP mode at no load-enables >1-year battery standby in always-on automotive modules without auxiliary LDOs. |
| Automotive-grade reliability | AEC-Q100 qualified, −40°C to +125°C operation, +42V transient tolerance-meets ISO 7637-2 pulse 5a/b requirements. |
| Integrated power-good monitoring | PGOOD open-drain output with 10µs debounce-provides deterministic system reset and rail sequencing without external comparators. |
| Dropout-capable operation | 97% max duty cycle with 150ns low-side refresh-maintains regulation down to VIN = VOUT + 0.3V, critical for cold-crank scenarios. |
Applications
| Infotainment Power Supply | ADAS Camera Module Rail |
|---|---|
|
Use Scenario: Powers SoC, display driver, and audio codec in automotive head units with wide input voltage swings during engine start-stop cycles. IC Role / Device Role / Timing Role: Primary 5.2V buck regulator providing clean, sequenced power with PGOOD confirmation before SoC boot. Use Value: Spread-spectrum operation prevents interference with AM/FM radio reception; 25μA quiescent current extends battery life during vehicle sleep mode. |
Use Scenario: Supplies image sensor and ISP in forward-facing ADAS cameras exposed to extreme under-hood temperatures. IC Role / Device Role / Timing Role: High-reliability 5.2V power stage with thermal shutdown and -40°C to +125°C operation for continuous vision processing. Use Value: 97% dropout capability maintains camera operation during 6V cold-crank events; AEC-Q100 qualification ensures field longevity. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
|
Use Scenario: Powers microcontroller, LIN transceivers, and LED drivers in door modules and lighting controllers. IC Role / Device Role / Timing Role: Compact, thermally robust buck converter replacing discrete solutions to meet space-constrained PCB layouts. Use Value: 10-pin TDFN-EP package (3mm × 3mm) reduces footprint by >40% vs. TSSOP; exposed pad lowers junction temperature by 25°C at full load. |
Use Scenario: Generates 5.2V rail for cellular modem, GNSS receiver, and secure element in connected vehicle telematics units. IC Role / Device Role / Timing Role: EMI-optimized DC-DC converter meeting CISPR 25 Class 5 radiated emissions limits without ferrite beads. Use Value: Enabled spread-spectrum modulation reduces 2.1MHz harmonic peaks by 10dBµV/m-eliminates need for costly shielding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16904RATB52/V+ | No spread-spectrum modulation; otherwise identical electrical specs and pinout. | Higher peak EMI emissions; suitable where radiated noise is controlled via layout/shielding rather than spectral dither. | Select MAX16904RATB52/V+ if EMI testing passes without spread-spectrum, or if cost sensitivity outweighs EMI margin. |
| LMQ66430QRGTRQ1 | 3.0V–36V input, 3A output, 2.1MHz, no spread-spectrum, different pinout (16-pin WQFN), higher IQ (26μA). | Higher current capacity but larger footprint; lacks integrated PGOOD and spread-spectrum-requires external monitoring circuitry. | Select LMQ66430QRGTRQ1 only if >600mA output or wider input range (>28V) is required; not drop-in compatible. |
Compared with MAX16904RATB52/V+, the MAX16904SATB52/V+T provides superior EMI performance via enabled spread-spectrum, while the LMQ66430QRGTRQ1 offers higher output current at the expense of pin compatibility, integrated monitoring, and spectral shaping capability.
Availability
MAX16904SATB52/V+T is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and body control units requiring stable component supply with AEC-Q100 qualification and long-term production support.
Supply support for MAX16904SATB52/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-with emphasis on high-reliability, low-power, and AEC-Q100-compliant solutions.
The MAX16904 product line delivers compact, high-voltage synchronous buck converters optimized for automotive subsystems needing robust 5V-class rails with minimal external components and stringent EMI control.
FAQ
What output voltage does the MAX16904SATB52/V+T deliver?
The MAX16904SATB52/V+T delivers a factory-trimmed fixed output voltage of 5.2V, with accuracy of ±2.5% under fixed-frequency operation and ±4.0% in SKIP mode across −40°C to +125°C. This value is laser-trimmed during production and cannot be adjusted externally.
Does the MAX16904SATB52/V+T include spread-spectrum modulation?
Yes, the MAX16904SATB52/V+T has spread-spectrum modulation enabled, providing +6% frequency dither around the nominal 2.1MHz switching frequency. This feature is factory-configured and active only when the device operates using its internal oscillator-not during external SYNC mode.
What package type is used for the MAX16904SATB52/V+T?
The MAX16904SATB52/V+T uses a 10-pin TDFN-EP (3mm × 3mm × 0.75mm) package with exposed thermal pad. It is RoHS-compliant, lead-free, and designed for surface-mount assembly with JEDEC-standard reflow profiles (peak 260°C).
How does the MAX16904SATB52/V+T handle input voltage transients?
The MAX16904SATB52/V+T tolerates input transients up to +42V for ≤1 second, meeting ISO 7637-2 Pulse 5a/b requirements. Its internal protection circuits prevent damage during load-dump events common in 12V automotive systems.
Is the MAX16904SATB52/V+T AEC-Q100 qualified?
Yes, the MAX16904SATB52/V+T is AEC-Q100 qualified for Grade 1 (−40°C to +125°C ambient), including stress testing for HTOL, TC, UHAST, and ESD (±2kV HBM). The "/V+" suffix explicitly denotes automotive qualification per Maxim's ordering nomenclature.
MAX16904SATB52/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):
- 5.2V
- 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)
MAX16904SATB52/V+T FAQ
1.How can I place an order for MAX16904SATB52/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16904SATB52/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 MAX16904SATB52/V+T reliable?
The price and inventory of MAX16904SATB52/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 MAX16904SATB52/V+T is usually 5 days.
3.What payment methods are accepted for MAX16904SATB52/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16904SATB52/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16904SATB52/V+T?
MAX16904SATB52/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16904SATB52/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 MAX16904SATB52/V+T?
For technical support, including MAX16904SATB52/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16904SATB52/V+T requirements.
6.How does Aetrix verify that MAX16904SATB52/V+T is sourced from the original manufacturer or authorized distributors?
All MAX16904SATB52/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 MAX16904SATB52/V+T meets industry standards.
7.What is the process for return or replacement of MAX16904SATB52/V+T?
All MAX16904SATB52/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16904SATB52/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 MAX16904SATB52/V+T part is unused and in its original packaging.
Return procedure for MAX16904SATB52/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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