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Analog Devices Inc./Maxim Integrated MAX16907SATE/V+T
- Part No.:
- MAX16907SATE/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX16907SATE/V+T.pdf
- Description:
- IC REG BUCK ADJ/1V 3A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,862
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Product details
Overview
MAX16907SATE/V+T from Maxim Integrated is a 3A, current-mode, automotive-grade step-down DC-DC converter with integrated 70mΩ high-side MOSFET, operating from 3.5V to 36V input and delivering 5V fixed or 1V–10V adjustable output at up to 3A continuous load. It features 30µA no-load quiescent current, 2.2MHz switching frequency (adjustable 1–2.2MHz), and operates across –40°C to +125°C for engine control units and ADAS power rails.
For engineers reviewing the MAX16907SATE/V+T datasheet, MAX16907SATE/V+T pinout, MAX16907SATE/V+T application, or MAX16907SATE/V+T equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive thermal and transient performance, and real-world design trade-offs for high-voltage buck conversion in cold-crank and load-dump environments.
Technical Context
The MAX16907SATE/V+T implements a constant-frequency current-mode control architecture with internal transconductance error amplifier (gm = 900µS), 80ns minimum on-time, and 98% maximum duty cycle-enabling stable regulation during automotive undervoltage transients (e.g., cold-crank down to 3.5V). Its dual supply inputs (SUP and SUPSW) decouple bias and switch drive paths, supporting independent voltage handling up to 42V input transients.
It integrates a 5V linear regulator (BIAS) with 4.7–5.3V output and 3.1V UVLO hysteresis, plus synchronous FSYNC input accepting external clocks ≥10% above internal fSW. Skip mode activates below 300mA load, reducing quiescent current to 30µA while maintaining PGOOD monitoring and fast load-transient recovery via optimized loop dynamics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V - supports full automotive battery range including cold-crank (≥3.5V) and ISO 7637-2 load dump (42V tolerant) |
| Output Current | 3A continuous - sustains full load at 125°C ambient with TQFN thermal resistance of 35°C/W |
| Switching Frequency | 1MHz to 2.2MHz - resistor-programmable (RFOSC) for EMI optimization and compact magnetics (e.g., 2.2MHz → 2.2µH inductor) |
| Quiescent Current | 30µA at no load - enables always-on systems (e.g., CAN wake-up circuits) without battery drain |
| Output Voltage Options | 5V fixed (FB tied to BIAS) or 1V–10V adjustable - precision 1.0V FB reference (±1.5% over temp) enables accurate point-of-load regulation |
| Protection Features | Overcurrent (4.1A typ), overvoltage (110% VFB trip), thermal shutdown (+175°C), and PGOOD monitoring - ensures robust operation in unattended automotive modules |
| Operating Temperature | –40°C to +125°C - qualified per AEC-Q100 Grade 1, suitable for under-hood and infotainment power supplies |
Pinout & Package
MAX16907SATE/V+T is packaged in a 16-pin TQFN (5mm × 5mm) with exposed pad, optimized for thermal dissipation in high-power density automotive layouts. The exposed pad must be soldered to a large contiguous copper ground plane (not used as sole GND connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (FSYNC) | External clock synchronization input | Accepts external clock ≥10% above internal fSW; disables internal spread spectrum when active |
| 2 (FOSC) | Frequency-setting resistor input | Connects to GND via RFOSC (e.g., 12kΩ for 2.2MHz); sets oscillator frequency with ±5% tolerance |
| 3 (PGOOD) | Open-drain power-good monitor | Asserts low when VOUT < 92.5% VFB; deasserts when >95% VFB; 10–60µs debounce prevents false sequencing faults |
| 4 (OUT) | Switch-regulator output node | Delivers regulated output; powers internal circuitry in standby when VOUT = 3–5.5V |
| 5 (FB) | Feedback input | 1.0V reference point; tie to BIAS for 5V fixed output; connect resistive divider for adjustable output |
| 6 (COMP) | Error amplifier output | Connects to RC compensation network (e.g., RCOMP = 20kΩ, CCOMP1 = 1000pF, CCOMP2 = 12pF) for loop stability |
| 7 (BIAS) | Integrated 5V LDO output | Powers internal logic; requires 1µF ceramic bypass to GND; regulates from SUP/SUPSW with 3.1V UVLO |
| 8 (GND) | Analog/digital ground reference | Primary signal return; connects to EP (exposed pad) but EP is not substitute for GND routing |
| 9 (BST) | Bootstrap capacitor terminal | Requires 0.1µF ceramic between BST and LX; enables high-side gate drive above input rail |
| 10 (SUP) | Main supply input for bias circuitry | 3.5–36V input; powers internal LDO; requires ≥4.7µF ceramic decoupling to GND |
| 11–12 (LX) | Power switch node | Connects to inductor and Schottky freewheel diode anode; handles 4A RMS current; sensitive to layout parasitics |
| 13–14 (SUPSW) | High-side switch supply input | 3.5–36V input dedicated to gate driver; requires 4.7µF + 0.1µF ceramic decoupling; tolerates 42V transients |
| 15 (EN) | Enable input | Logic-compatible (3.3V–36V); 2V threshold with 0.2V hysteresis; pulls device into 5µA shutdown when low |
| 16 (I.C.) | Internally connected | Must be tied to GND; not functional; provides internal reference path |
| EP | Exposed thermal pad | Connected to GND plane for thermal conduction; junction-to-ambient θJA = 35°C/W (TQFN) |
Key Features
| Feature | Design Value |
|---|---|
| Wide input range with 42V transient tolerance | Enables direct connection to automotive battery without pre-regulator; survives ISO 7637-2 pulse 5a (load dump) |
| 98% max duty cycle during undervoltage | Maintains 5V output regulation even during cold-crank events where input drops to 3.5V |
| 30µA standby current with VOUT-powered bias | Reduces system battery drain in always-on domains (e.g., telematics wake-up receivers) |
| Adjustable 1–2.2MHz switching frequency | Allows trade-off between inductor size (smaller at 2.2MHz) and efficiency (higher at 1MHz) |
| Integrated 3A/70mΩ high-side MOSFET | Eliminates external switch and associated gate-drive complexity; reduces BOM count and PCB area |
| Fast load-transient response with current-mode control | Recovers from 0→3A step within 100µs with <200mV overshoot; protects downstream 5V logic rails |
Applications
| Automotive Engine Control Unit (ECU) | ADAS Camera Power Supply |
|---|---|
|
Use Scenario: Powers microcontroller, CAN transceiver, and sensors in under-hood ECU exposed to cold-crank (3.5V) and load-dump (42V) events. IC Role / Device Role / Timing Role: Primary 5V buck regulator delivering 3A continuous; manages power sequencing via PGOOD and EN. Use Value: 98% duty cycle maintains regulation during cold-crank; 30µA quiescent current prevents battery depletion during vehicle sleep mode. |
Use Scenario: Supplies clean 5V to image sensor and ISP in forward-facing camera module operating at –40°C to +105°C. IC Role / Device Role / Timing Role: Point-of-load regulator with tight output accuracy (±1.5% over temp) and fast transient response for pixel clock stability. Use Value: 1.0V FB reference and current-mode control ensure <50mV load-step deviation; TQFN package enables compact placement near sensor. |
| Industrial IoT Gateway | Infotainment System PMIC Core Rail |
|
Use Scenario: Powers ARM Cortex-M7 MCU and LTE modem in sealed industrial gateway subjected to 24VDC brownouts and EMI-sensitive environments. IC Role / Device Role / Timing Role: High-efficiency buck converter with spread-spectrum option (S-version) to reduce conducted EMI peaks. Use Value: Adjustable 1–2.2MHz fSW allows EMI filtering at 1.8MHz; 42V transient tolerance eliminates need for TVS on 24V input rail. |
Use Scenario: Generates core 5V rail for infotainment SoC requiring precise voltage tracking and power-good coordination with other rails. IC Role / Device Role / Timing Role: Regulated 5V source with PGOOD output synchronized to system power manager for safe boot sequence. Use Value: PGOOD threshold (92.5–97% VFB) ensures reliable SoC reset assertion; soft-start time (8.5ms) prevents inrush current on 500µF output capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480RQR | 4.5–36V input, 8A output, 2.1MHz fSW, 15µA IQ, no integrated BIAS LDO | Higher current capacity but lacks 5V BIAS rail; requires external LDO for biasing logic | Select when >3A load or lower IQ is critical; verify external bias supply meets timing requirements for EN sequencing |
| TPS62933RGER | 3–36V input, 3A output, 1–2.5MHz fSW, 12µA IQ, 0.8V FB reference, no FSYNC | Lower IQ and wider fSW range, but no synchronization input or 42V transient rating | Select for ultra-low-power battery-backed systems; avoid in automotive environments requiring load-dump immunity |
Compared with MAX16907SATE/V+T, LM61480RQR offers higher current and lower IQ but adds system complexity with external biasing, while TPS62933RGER improves efficiency in light-load scenarios but sacrifices automotive-grade transient protection and clock synchronization-making MAX16907SATE/V+T optimal for AEC-Q100-compliant designs needing integrated bias, PGOOD, and robust cold-crank behavior.
Availability
MAX16907SATE/V+T is available at Aetrix Electronics and suitable for automotive ECU, ADAS camera modules, and industrial IoT gateways requiring stable component supply with guaranteed long-term availability and AEC-Q100 compliance.
Supply support for MAX16907SATE/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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for automotive, industrial, and communications markets.
The MAX16907 belongs to Maxim's automotive power-supply portfolio, designed specifically for harsh-environment DC-DC conversion in engine control, ADAS, and infotainment systems requiring wide VIN, low IQ, and AEC-Q100 qualification.
FAQ
What is the maximum input voltage transient the MAX16907SATE/V+T can withstand?
The MAX16907SATE/V+T withstands 42V input transients for durations under 1 second, complying with ISO 7637-2 Pulse 5a (load dump) requirements. This rating applies to both SUP and SUPSW pins, enabling direct connection to automotive battery without external TVS diodes in many implementations. The device remains functional and does not latch up during such events, resuming normal regulation once the transient subsides.
Does the MAX16907SATE/V+T support fixed 5V output without external resistors?
Yes, the MAX16907SATE/V+T supports fixed 5V output by connecting the FB pin directly to the BIAS pin-no external feedback resistors required. This configuration leverages the internal 1.0V reference and BIAS regulator to deliver tightly regulated 5V ±1.5% over temperature and line, reducing BOM count and layout complexity compared to adjustable configurations.
How does the MAX16907SATE/V+T achieve 30µA quiescent current in standby mode?
The MAX16907SATE/V+T achieves 30µA quiescent current by entering skip mode below 300mA load and powering internal circuitry from VOUT (when 3V ≤ VOUT ≤ 5.5V) instead of SUP/SUPSW. This eliminates bias current draw from the high-voltage input rails while maintaining PGOOD monitoring and fast wake-up capability-critical for automotive always-on domains like CAN wake-up receivers.
What is the purpose of the separate SUP and SUPSW pins on the MAX16907SATE/V+T?
SUP powers the internal 5V BIAS LDO and control logic, while SUPSW exclusively powers the high-side MOSFET gate driver. This separation allows SUPSW to remain functional during cold-crank events where SUP may dip below regulation, enabling the device to sustain >98% duty cycle and maintain output regulation-even when input falls to 3.5V-without compromising gate drive strength.
Can the MAX16907SATE/V+T be synchronized to an external clock, and what are the constraints?
Yes, the MAX16907SATE/V+T accepts external synchronization via the FSYNC pin. The external clock frequency must exceed the internal oscillator frequency by at least 10% (e.g., ≥2.42MHz for nominal 2.2MHz operation) to ensure reliable locking. When synchronized, internal spread spectrum is disabled, but the device accepts externally generated spread-spectrum clocks-supporting EMI reduction in noise-sensitive systems like radar or camera modules.
MAX16907SATE/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1V (5V)
- Voltage - Output (Max):
- 10V
- Current - Output:
- 3A
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (5x5)
MAX16907SATE/V+T FAQ
1.How can I place an order for MAX16907SATE/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16907SATE/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 MAX16907SATE/V+T reliable?
The price and inventory of MAX16907SATE/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 MAX16907SATE/V+T is usually 5 days.
3.What payment methods are accepted for MAX16907SATE/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16907SATE/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16907SATE/V+T?
MAX16907SATE/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16907SATE/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 MAX16907SATE/V+T?
For technical support, including MAX16907SATE/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16907SATE/V+T requirements.
6.How does Aetrix verify that MAX16907SATE/V+T is sourced from the original manufacturer or authorized distributors?
All MAX16907SATE/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 MAX16907SATE/V+T meets industry standards.
7.What is the process for return or replacement of MAX16907SATE/V+T?
All MAX16907SATE/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16907SATE/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 MAX16907SATE/V+T part is unused and in its original packaging.
Return procedure for MAX16907SATE/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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