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Analog Devices Inc./Maxim Integrated MAX16907SATE+
- Part No.:
- MAX16907SATE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX16907SATE+.pdf
- Description:
- IC REG BUCK ADJ/5V 3A 16TQFN
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Product details
Overview
MAX16907SATE+ 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 fixed 5V or adjustable 1V–10V output. It features 2.2MHz switching frequency (adjustable 1–2.2MHz), 30µA no-load quiescent current, and operates across –40°C to +125°C for engine control units and ADAS power rails.
For engineers reviewing the MAX16907SATE+ datasheet, MAX16907SATE+ pinout, MAX16907SATE+ application, or MAX16907SATE+ equivalent, this page delivers verified electrical specs, thermal behavior under load dump, skip-mode transient response, and validated TQFN-16 pin mapping - all critical for automotive power supply design and AEC-Q100-compliant system integration.
Technical Context
The MAX16907SATE+ implements constant-frequency current-mode control with 80ns minimum on-time and 98% max duty cycle during cold-crank undervoltage transients. Its dual-supply architecture separates SUP (bias regulator input) and SUPSW (high-side switch supply), enabling stable regulation down to 3.5V while tolerating 42V load-dump events.
It integrates a 5V/100mA BIAS LDO, programmable oscillator with external resistor (RFOSC) or FSYNC synchronization, and a transconductance error amplifier (gm = 900µS) with accessible COMP node for Type-II/III compensation. Protection includes overvoltage lockout at 110% VFB, thermal shutdown at +175°C with 15°C hysteresis, and automatic-recovery overcurrent limiting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V - supports wide automotive battery range including cold-crank (≥4.5V) and load-dump (≤42V transient) |
| Output Current | 3A continuous - sufficient for powering microcontrollers, sensors, and CAN transceivers in distributed ECUs |
| Switching Frequency | 2.2MHz (typ, RFOSC = 12kΩ) - enables compact 2.2µH inductor and low-profile ceramic output capacitors |
| Quiescent Current | 30µA at no load - extends battery life in always-on vehicle modules like telematics and alarm systems |
| Operating Temperature | –40°C to +125°C - qualified for under-hood and transmission-control applications per AEC-Q100 stress requirements |
| High-Side RDS(on) | 70mΩ (typ) - reduces conduction loss and thermal rise at full 3A load in TQFN-5×5 package |
| Feedback Reference | 1.00V (±1.5% over temp) - enables precise 5V output (±1.5%) or accurate adjustable outputs using external divider |
Pinout & Package
MAX16907SATE+ is housed in a thermally enhanced 16-pin TQFN package (5mm × 5mm, 0.5mm pitch) with exposed pad (EP) for PCB-level heat dissipation. The package supports JEDEC-standard reflow and achieves 35°C/W junction-to-ambient thermal resistance on a 4-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (FSYNC) | External clock sync input | Accepts 10% higher-frequency external clock; disables internal spread spectrum when active |
| 2 (FOSC) | Oscillator frequency setting | Resistor-to-GND sets fSW from 1MHz to 2.2MHz; 12kΩ yields 2.2MHz nominal |
| 3 (PGOOD) | Open-drain power-good monitor | Asserts low when VOUT drops below 92.5% VFB; used for supply sequencing in multi-rail systems |
| 4 (OUT) | Switch-node output | Delivers regulated output; powers internal circuitry in standby mode when VOUT = 3–5.5V |
| 5 (FB) | Feedback voltage sense | Connect to BIAS for fixed 5V; connect resistive divider for 1V–10V adjustable output |
| 6 (COMP) | Error amplifier output | External RC network provides loop compensation; supports Type-II/III stability design |
| 7 (BIAS) | Integrated 5V LDO output | Supplies internal logic; requires 1µF ceramic bypass to GND for noise immunity |
| 8 (GND) | Analog/digital ground reference | Primary return path; must be connected to EP and system ground plane |
| 9 (BST) | Bootstrap capacitor connection | 0.1µF capacitor between BST and LX enables high-side gate drive above input rail |
| 10 (SUP) | Main supply input | Powers internal bias regulator; requires ≥4.7µF ceramic decoupling to GND |
| 11–12 (LX) | Power switch node | Connects to inductor and Schottky freewheel diode anode; handles peak 4A RMS current |
| 13–14 (SUPSW) | High-side switch supply | Separate input for switch driver; requires 0.1µF + 4.7µF ceramic decoupling to GND |
| 15 (EN) | Enable control input | Logic-compatible with 3.3V/5V/KL30; 2V threshold enables direct CAN transceiver INH connection |
| 16 (I.C.) | Internally connected | Must be tied to GND; not functional as signal or power terminal |
| EP | Exposed thermal pad | Requires solid copper connection to GND plane; accounts for >80% of total heat dissipation |
Key Features
| Feature | Design Value |
|---|---|
| 42V Input Transient Tolerance | Withstands ISO 7637-2 Pulse 5a load-dump events without derating or external clamping |
| 98% Max Duty Cycle | Maintains regulation during cold-crank (e.g., 4.5V input @ 5V output) without dropout |
| Skip Mode Operation | Reduces IQ to 30µA at light loads (<185mA), extending battery runtime in sleep-state modules |
| Spread Spectrum (Factory-Enabled) | ±6% triangular modulation at 2.2MHz base frequency lowers peak EMI by >10dB in CISPR 25 Band C |
| Fast Load-Transient Response | Recovers within 100µs from 0→3A step with <50mV undershoot - protects downstream 3.3V logic rails |
| Integrated Power-Good Monitor | PGOOD provides clean, debounced (10–60µs) enable signal for FPGA/CPU reset sequencing |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN FD transceiver, and analog front-end in under-hood ECU exposed to 125°C ambient and 42V transients. IC Role / Device Role / Timing Role: Primary 5V buck regulator with cold-crank support and PGOOD sequencing for microcontroller boot. Use Value: Eliminates need for external TVS and discrete high-voltage LDO; maintains regulation at 4.5V input during cranking. |
Use Scenario: Supplies isolated 5V rail for digital I/O drivers and fieldbus interface in factory automation cabinet. IC Role / Device Role / Timing Role: High-efficiency point-of-load converter with low-noise operation in noise-sensitive analog zones. Use Value: 2.2MHz switching avoids AM radio band; 30µA IQ enables energy harvesting compatibility. |
| ADAS Camera Power Supply | Telematics Control Unit (TCU) |
Use Scenario: Generates clean 5V for image sensor and ISP in rear-view camera module mounted near exhaust. IC Role / Device Role / Timing Role: Low-EMI, thermally robust DC-DC stage preceding LDO post-regulator for sensor analog supply. Use Value: Spread spectrum and 80ns min-on-time ensure stable 5V output despite 9–16V battery variation and thermal cycling. |
Use Scenario: Powers LTE modem, GNSS receiver, and secure element in always-connected vehicle gateway. IC Role / Device Role / Timing Role: Standby-optimized buck converter enabling <100µA system sleep current. Use Value: 5µA shutdown current and skip-mode operation extend backup battery life beyond 30 days. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480RQWR | 4.5–36V input, 3.5A, 2.1MHz, 15µA IQ, no BIAS LDO, no FSYNC | Lacks integrated BIAS regulator and clock sync; requires external 5V bias source | Prefer when lowest IQ is critical and system already provides 5V bias rail |
| TPS62933RTER | 3–36V input, 3A, 2.2MHz, 12µA IQ, 1.2V feedback, no spread spectrum | No spread spectrum or load-dump tolerance spec; rated only to 40V transient | Select for non-automotive industrial use where EMI filtering is handled externally |
Compared with LM61480RQWR and TPS62933RTER, the MAX16907SATE+ uniquely combines 42V transient rating, integrated 5V BIAS LDO, FSYNC capability, and factory-enabled spread spectrum - making it the only option qualified for direct replacement in AEC-Q100-compliant ECU main power stages without redesign.
Availability
MAX16907SATE+ is available at Aetrix Electronics and suitable for automotive ECU designs, ADAS camera modules, and industrial PLC power supplies requiring stable component supply across extended temperature and high-reliability qualification.
Supply support for MAX16907SATE+ 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 MAX16907SATE+ belongs to Maxim's automotive power portfolio, engineered specifically for harsh-environment DC-DC conversion in engine compartments and ADAS subsystems with stringent AEC-Q100 and ISO 16750 compliance requirements.
FAQ
What is the maximum input voltage transient the MAX16907SATE+ can withstand?
The MAX16907SATE+ is rated for 42V input transients per ISO 7637-2 Pulse 5a, verified under load-dump test conditions with tLD < 1s. This exceeds standard 36V automotive supply ratings and eliminates need for external TVS diodes in most ECU designs. The device remains functional and regulates output during the event without latch-up or parameter shift.
Does the MAX16907SATE+ support both fixed 5V and adjustable output configurations?
Yes, the MAX16907SATE+ supports both configurations. For fixed 5V output, connect FB directly to BIAS. For adjustable 1V–10V output, use an external resistive divider from OUT to FB to GND, with VFB = 1.00V ±1.5% as the regulation reference. The MAX16907SATE+ datasheet provides exact resistor calculation formulas and layout guidance for both modes.
How does the MAX16907SATE+ achieve low quiescent current in standby mode?
The MAX16907SATE+ achieves 30µA typical standby current by entering skip mode below 185mA load, then powering internal circuitry from VOUT (when 3V ≤ VOUT ≤ 5.5V) instead of SUP/SUPSW. This cuts bias current draw from the battery while maintaining fast wake-up. Shutdown current drops further to 5µA when EN is pulled low.
Can the MAX16907SATE+ be synchronized to an external clock, and what are the requirements?
Yes, the MAX16907SATE+ 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). FSYNC also disables the internal spread spectrum modulator. The input thresholds are VFSYNC_HI = 1.4V and VFSYNC_LO = 0.4V, compatible with CMOS/LVTTL logic.
What thermal performance can be expected from the MAX16907SATE+ in a 5mm × 5mm TQFN package?
In a standard 4-layer PCB with 2oz copper and full EP grounding, the MAX16907SATE+ achieves 35°C/W junction-to-ambient thermal resistance. At 3A load and 14V input, power dissipation is ~0.7W, resulting in ~25°C temperature rise above ambient. Derating begins above +70°C ambient at 28.6mW/°C, supporting full 3A operation up to +125°C case temperature.
MAX16907SATE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Strip
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX16907SATE+ FAQ
1.How can I place an order for MAX16907SATE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16907SATE+ 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+ reliable?
The price and inventory of MAX16907SATE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16907SATE+ is usually 5 days.
3.What payment methods are accepted for MAX16907SATE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16907SATE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16907SATE+?
MAX16907SATE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16907SATE+ 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+?
For technical support, including MAX16907SATE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16907SATE+ requirements.
6.How does Aetrix verify that MAX16907SATE+ is sourced from the original manufacturer or authorized distributors?
All MAX16907SATE+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX16907SATE+?
All MAX16907SATE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16907SATE+, 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+ part is unused and in its original packaging.
Return procedure for MAX16907SATE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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