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Analog Devices Inc./Maxim Integrated MAX16907SAUE+
- Part No.:
- MAX16907SAUE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MAX16907SAUE+.pdf
- Description:
- IC REG BUCK ADJ/1V 3A 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:123
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Product details
Overview
MAX16907SAUE+ 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. 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 MAX16907SAUE+ datasheet, MAX16907SAUE+ pinout, MAX16907SAUE+ application, or MAX16907SAUE+ equivalent, this page delivers verified package mapping (16-pin TSSOP), confirmed pin functions (e.g., FSYNC for clock sync, PGOOD for sequencing), thermal specs (175°C shutdown), and real-world automotive transient tolerance (42V load dump).
Technical Context
The MAX16907SAUE+ employs current-mode control with fast-loop compensation and an 80ns minimum on-time to sustain regulation during cold-crank undervoltage transients (≥98% duty cycle). Its dual-supply architecture separates SUP (bias LDO input) and SUPSW (high-side switch supply), enabling stable operation even when SUPSW drops below VOUT during low-input events.
It integrates a 5V BIAS LDO (4.7–5.3V, ±100mV line/load regulation), programmable oscillator (RFOSC-set), and synchronous-ready FSYNC input accepting external clocks >10% above internal fSW. Skip mode activates below 300mA load, reducing IQ to 30µA while maintaining PGOOD monitoring and soft-start (8.5ms).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V - supports wide automotive battery range including cold-crank (≥98% duty cycle at low VIN) |
| Output Current | 3A continuous - sustains full load with 4A LX RMS rating and thermal protection |
| Switching Frequency | 1MHz to 2.2MHz - resistor-programmable (RFOSC) or externally synchronized via FSYNC |
| Quiescent Current | 30µA at no load - enables always-on systems without battery drain |
| Output Voltage Options | 5V fixed (FB tied to BIAS) or 1V–10V adjustable (via FB resistive divider, VFB = 1.0V ±15mV) |
| Protection Features | Overcurrent (ILX limit 3.4–6A), overvoltage (110% trip), thermal shutdown (175°C), and PGOOD monitoring |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive placement |
Pinout & Package
MAX16907SAUE+ is housed in a 16-pin TSSOP package (4.4mm × 5.0mm, 0.65mm pitch) with exposed pad (EP) for thermal dissipation. The EP must be soldered to a large contiguous copper ground plane but cannot serve as sole GND connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FSYNC | Synchronization input | Accepts external clock >10% above internal fSW; connect to GND for internal oscillator use |
| 2 FOSC | Frequency-setting input | Resistor-to-GND sets fSW (e.g., 12kΩ → 2.2MHz); enables EMI optimization |
| 3 PGOOD | Open-drain power-good output | Asserts low when VOUT falls below 92.5% of regulation; deasserts above 95% - critical for supply sequencing |
| 4 OUT | Switch regulator output | Delivers regulated output; powers internal circuitry in standby when VOUT = 3–5V |
| 5 FB | Feedback input | Connect to BIAS for 5V fixed output; connect resistive divider for 1–10V adjustment (VFB = 1.0V) |
| 6 COMP | Error amplifier output | External RC network (RCOMP, CCOMP1, CCOMP2) sets loop stability and transient response |
| 7 BIAS | Internal 5V LDO output | Powers internal logic; bypass with 1µF ceramic capacitor to GND |
| 8 GND | Analog/digital ground | Primary reference for FB, COMP, and control circuitry; connects to EP and PCB ground plane |
| 9 BST | Bootstrap supply | 0.1µF capacitor between BST and LX enables high-side gate drive; critical for MOSFET turn-on |
| 10 SUP | Main supply input | 3.5–36V input powering internal LDO; requires ≥4.7µF ceramic decoupling to GND |
| 11/12 LX | Switch node | Connects to inductor and Schottky freewheel diode cathode; handles high dI/dt and voltage swing |
| 13/14 SUPSW | High-side switch supply | Separate 3.5–36V input for internal MOSFET driver; decouple with 0.1µF + 4.7µF ceramics |
| 15 EN | Enable input | Logic-compatible (3.3V–36V); high = enable, low = shutdown (5µA IQ); connects to KL30 or CAN INH |
| 16 I.C. | Internally connected | Must be tied to GND; not functional - internal test node |
| EP | Exposed thermal pad | Thermal path to PCB ground plane; improves θJA to 38.3°C/W (TSSOP); not electrically active |
Key Features
| Feature | Design Value |
|---|---|
| 42V input transient tolerance | Withstands automotive load-dump events without latch-up or damage - eliminates need for upstream TVS |
| Adjustable 1MHz–2.2MHz fSW | Enables compact magnetics (e.g., 2.2µH inductor) and EMI spread-spectrum compatibility |
| 30µA standby IQ | Supports always-on vehicle modules (e.g., telematics, alarm) with <100µA system sleep current |
| Integrated 70mΩ high-side switch | Reduces external component count and PCB area; eliminates gate-driver complexity |
| Power-good (PGOOD) monitor | Provides precise sequencing signal (±2.5% window) for downstream processors and FPGAs |
| 80ns minimum on-time | Ensures regulation at high VIN/VOUT ratios (e.g., 24V→5V @ 2.2MHz) without pulse-skipping instability |
Applications
| Engine Control Unit (ECU) Power | Advanced Driver Assistance Systems (ADAS) |
|---|---|
|
Use Scenario: Powers microcontroller, CAN transceiver, and sensor interface in gasoline/diesel ECUs exposed to cold-crank (4.5V) and load-dump (42V) events. IC Role / Device Role / Timing Role: Primary 5V buck regulator with PGOOD sequencing, thermal shutdown, and high-duty-cycle operation during undervoltage. Use Value: Eliminates need for external TVS and discrete high-side switch; maintains regulation down to 4.5V input with 98% duty cycle. |
Use Scenario: Supplies 3.3V or 5V rails to radar SoCs, camera ISPs, and Ethernet PHYs in front-camera or surround-view modules. IC Role / Device Role / Timing Role: Point-of-load converter with fast load-transient response (<100µs recovery) and low-noise 2.2MHz operation. Use Value: 80ns min-on-time and current-mode control ensure stable 5V output during rapid processor load steps (0→3A). |
| Infotainment Head Unit | Body Control Module (BCM) |
|
Use Scenario: Generates 5V for display controller, audio codec, and USB hub in dashboard infotainment systems requiring low EMI. IC Role / Device Role / Timing Role: Synchronized buck converter (FSYNC) to avoid beat frequencies with display or audio clocks. Use Value: External clock sync and optional spread spectrum reduce conducted EMI peaks by >10dB in CISPR 25 Class 5 bands. |
Use Scenario: Powers door module MCUs and LIN transceivers in always-on BCMs where quiescent current directly impacts battery life. IC Role / Device Role / Timing Role: Standby-mode regulator with 30µA IQ and automatic skip-mode entry below 300mA load. Use Value: Reduces parasitic draw to <50µA system level - extends 12V battery life beyond 6 months in parked state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480QRTWRQ1 | 4.5–36V input, 5A, 2.1MHz, 15µA IQ, no integrated BIAS LDO | Requires external 5V bias rail; higher current but lacks BIAS-powered standby mode | Choose for higher output current needs where external bias is available and lower IQ is critical |
| TPS62933-Q1 | 3–36V input, 3A, 2.2MHz, 12µA IQ, 1.2V–5.5V adjustable output only | No 5V fixed option; no PGOOD; no 42V transient rating; requires external soft-start | Choose for cost-sensitive designs needing ultra-low IQ but willing to add external components and accept narrower VOUT range |
Compared with LM61480QRTWRQ1 and TPS62933-Q1, the MAX16907SAUE+ uniquely combines 5V fixed output, integrated BIAS LDO, 42V transient tolerance, and PGOOD in a single TSSOP package - simplifying design for ECU and ADAS power rails where reliability and integration outweigh raw efficiency gains.
Availability
MAX16907SAUE+ is available at Aetrix Electronics and suitable for automotive ECU, ADAS camera modules, infotainment head units, and body control modules requiring stable component supply across extended temperature and transient conditions.
Supply support for MAX16907SAUE+ 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 MAX16907SAUE+ belongs to Maxim's automotive power-management portfolio, designed specifically for harsh-environment DC-DC conversion in engine bays and ADAS domains - emphasizing transient robustness, low IQ, and AEC-Q100 qualification.
FAQ
What is the maximum input voltage the MAX16907SAUE+ can withstand during load-dump events?
The MAX16907SAUE+ tolerates 42V input transients for durations under 1 second, meeting ISO 7637-2 Pulse 5a requirements. This capability allows direct connection to automotive battery rails without upstream TVS diodes in most ECU and BCM designs. The device remains functional and does not latch up during such events, ensuring system reliability during alternator load dumps.
Does the MAX16907SAUE+ support both fixed 5V and adjustable output configurations?
Yes, the MAX16907SAUE+ supports both configurations. For fixed 5V output, connect the FB pin directly to the BIAS pin. For adjustable output (1V–10V), use a resistive divider from OUT to FB to GND, with VFB regulated at 1.0V ±15mV. The MAX16907SAUE+ datasheet provides exact resistor calculation formulas and layout guidance for both modes.
How does the MAX16907SAUE+ achieve low quiescent current in standby mode?
The MAX16907SAUE+ achieves 30µA standby current by entering skip mode below 300mA load, disabling non-essential circuitry and drawing bias power from VOUT (when 3V ≤ VOUT ≤ 5.5V) instead of SUP. This architecture reduces total supply current to 30µA typical at no load, making it suitable for always-on automotive modules where battery drain must be minimized.
Can the MAX16907SAUE+ be synchronized to an external clock, and what are the timing requirements?
Yes, the MAX16907SAUE+ accepts synchronization via the FSYNC pin. The external clock frequency must exceed the internal oscillator frequency by at least 10% for reliable acquisition. The device locks to the external clock within one cycle (tFSYNC = 1 cycle), and internal spread spectrum is automatically disabled when FSYNC is active - preserving deterministic timing for noise-sensitive applications.
What thermal protection mechanisms are built into the MAX16907SAUE+?
The MAX16907SAUE+ incorporates thermal shutdown at +175°C (typical junction temperature) with 15°C hysteresis. When triggered, the internal bias regulator and step-down converter disable until the junction cools sufficiently. The TSSOP package has a junction-to-ambient thermal resistance of 38.3°C/W on a 4-layer board, and the exposed pad (EP) must be soldered to a large ground plane to maintain safe operating temperatures at full 3A load.
MAX16907SAUE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tube
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP-EP
MAX16907SAUE+ FAQ
1.How can I place an order for MAX16907SAUE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16907SAUE+ 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 MAX16907SAUE+ reliable?
The price and inventory of MAX16907SAUE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16907SAUE+ is usually 5 days.
3.What payment methods are accepted for MAX16907SAUE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16907SAUE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16907SAUE+?
MAX16907SAUE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16907SAUE+ 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 MAX16907SAUE+?
For technical support, including MAX16907SAUE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16907SAUE+ requirements.
6.How does Aetrix verify that MAX16907SAUE+ is sourced from the original manufacturer or authorized distributors?
All MAX16907SAUE+ 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 MAX16907SAUE+ meets industry standards.
7.What is the process for return or replacement of MAX16907SAUE+?
All MAX16907SAUE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16907SAUE+, 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 MAX16907SAUE+ part is unused and in its original packaging.
Return procedure for MAX16907SAUE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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