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Analog Devices Inc./Maxim Integrated MAX16907SAUE/V+
- Part No.:
- MAX16907SAUE/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MAX16907SAUE/V+.pdf
- Description:
- IC REG BUCK ADJ/1V 3A 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,116
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Product details
Overview
MAX16907SAUE/V+ 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 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 MAX16907SAUE/V+ datasheet, MAX16907SAUE/V+ pinout, MAX16907SAUE/V+ application, or MAX16907SAUE/V+ equivalent, key selection criteria include its 42V transient tolerance, 98% max duty cycle during cold-crank, spread-spectrum EMI reduction (S-version), power-good monitoring, and TSSOP-16 package with exposed pad for thermal management.
Technical Context
The MAX16907SAUE/V+ implements constant-frequency current-mode control with internal transconductance error amplifier (gm = 900µS), 80ns minimum on-time, and fast load-transient response enabled by integrator-plus-load-line architecture. Its dual supply inputs (SUP and SUPSW) decouple bias regulation from switch drive, enabling stable operation down to 3.5V input while sustaining 98% duty cycle during undervoltage transients.
It supports resistor-programmed frequency (RFOSC = 12kΩ → 2.2MHz), external clock synchronization (FSYNC), skip mode below 300mA load, and integrated protections: overcurrent (4.1A typ), overvoltage (110% VFB trip), thermal shutdown (+175°C), and automatic recovery. The BIAS LDO delivers 5V ±1% at up to 50mA to power internal circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V - supports wide automotive battery range including cold-crank (≥3.5V) and load-dump (≤42V transient) |
| Output Current | 3A continuous - sustains full load with ≤4A LX RMS current rating and thermal design margin in TSSOP-16 |
| Switching Frequency | 1MHz to 2.2MHz - adjustable via FOSC resistor; 2.2MHz enables compact 2.2µH inductor and low-output-capacitance designs |
| Quiescent Current | 30µA typical at no load - enables always-on systems (e.g., CAN wake-up circuits) without excessive battery drain |
| Output Voltage Options | 5V fixed (FB tied to BIAS) or 1V–10V adjustable (via FB resistive divider) - supports MCU core, I/O, and sensor rail flexibility |
| Protection Features | Overcurrent, overvoltage (110% VFB), thermal shutdown (+175°C), and power-good monitoring - ensures robust fault handling in harsh environments |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive applications per AEC-Q100 stress test requirements |
Pinout & Package
MAX16907SAUE/V+ is housed in a 16-pin TSSOP package with exposed pad (EP), optimized for thermal dissipation in high-power-density automotive PCBs. The exposed pad must be soldered to a large contiguous copper ground plane but cannot serve as the sole GND connection.
| 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) | Frequency-setting resistor node | 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 drops below 92.5% of regulation; deasserts above 95% - enables safe power sequencing |
| 4 (OUT) | Switch-regulator output node | Delivers regulated output; powers internal circuitry in standby when VOUT = 3–5.5V |
| 5 (FB) | Feedback voltage sense input | 1.0V ±1.5% reference; connect to BIAS for 5V fixed output or resistive divider for adjustable output |
| 6 (COMP) | Error amplifier output | Connect RC compensation network (e.g., RCOMP = 20kΩ, CCOMP1 = 1000pF, CCOMP2 = 12pF) for loop stability |
| 7 (BIAS) | Internal 5V LDO output | Bypass with 1µF ceramic capacitor; supplies internal logic and gate drivers; UVLO threshold = 3.1V |
| 8 (GND) | Analog/digital ground reference | Primary signal return; EP must also connect to GND but not replace this pin's function |
| 9 (BST) | Bootstrap capacitor node | Requires 0.1µF capacitor between BST and LX to drive high-side MOSFET gate above SUPSW |
| 10 (SUP) | Main supply input | Powers internal LDO; requires ≥4.7µF ceramic input capacitor; rated –0.3V to +42V absolute max |
| 11–12 (LX) | Switching node | Connects to inductor and Schottky diode cathode; handles peak currents up to 4A RMS |
| 13–14 (SUPSW) | High-side switch supply | Powers internal MOSFET driver; requires 0.1µF + 4.7µF decoupling; tolerates 42V transients |
| 15 (EN) | Enable input | Logic-compatible with 3.3V/5V/KL30; high-threshold = 2V, hysteresis = 0.2V; shuts down IC to 5µA |
| 16 (I.C.) | Internally connected | Must be tied to GND; not functional as signal or power terminal |
| EP | Exposed thermal pad | Electrically GND; mandatory for thermal performance - requires ≥200mm² copper area and ≥6 thermal vias |
Key Features
| Feature | Design Value |
|---|---|
| 42V input transient tolerance | Withstands automotive load-dump events without latch-up or damage, eliminating need for upstream TVS clamping |
| 98% maximum duty cycle | Maintains regulation during cold-crank (e.g., 5V out @ 6V in) without dropout, critical for engine start-stop systems |
| Spread-spectrum modulation (S-version) | ±6% triangular frequency dither at 2.2MHz base reduces peak EMI by >10dB, easing CISPR-25 Class 5 compliance |
| 8.5ms fixed soft-start | Prevents inrush current into up to 500µF output capacitance, protecting input source and downstream loads |
| Power-good (PGOOD) with 2.5% window | Enables precise sequencing with microcontrollers and FPGAs by signaling valid output within ±2.5% regulation band |
| Integrated 70mΩ high-side switch | Eliminates external MOSFET and driver, reducing BOM count and layout complexity for space-constrained ECUs |
Applications
| Engine Control Unit (ECU) Power Supply | Advanced Driver Assistance Systems (ADAS) Camera Module |
|---|---|
Use Scenario: Powers 3.3V/1.2V rails for MCU, CAN transceiver, and sensors in gasoline/diesel engine control units exposed to cold-crank and load-dump. IC Role / Device Role / Timing Role: Primary buck regulator converting 12V/24V battery to stable intermediate rail; provides PGOOD for MCU reset coordination. Use Value: 30µA quiescent current extends battery life during vehicle sleep; 98% duty cycle prevents brownout during cranking. | Use Scenario: Supplies 5V/3.3V to image sensor, ISP, and Ethernet PHY in front-facing ADAS cameras mounted near windshield. IC Role / Device Role / Timing Role: Point-of-load regulator with fast transient response to handle burst-mode sensor readouts and video streaming load steps. Use Value: 2.2MHz switching enables <3mm² solution size; spread spectrum reduces EMI coupling into analog video path. |
| Infotainment Head Unit Core Logic | Automotive Telematics Control Unit (TCU) |
Use Scenario: Generates 1.1V core and 1.8V I/O rails for application processors and DDR memory in center-stack infotainment systems. IC Role / Device Role / Timing Role: Adjustable-output buck converter configured for 1.1V/1.8V with external feedback dividers; synchronized to system clock via FSYNC. Use Value: Resistor-programmable frequency allows optimization for efficiency (1MHz) or size (2.2MHz); thermal shutdown protects against enclosure overheating. | Use Scenario: Powers LTE modem, GNSS receiver, and secure element in cellular-connected TCUs requiring always-on connectivity and low standby drain. IC Role / Device Role / Timing Role: Always-on buck regulator with EN controlled by CAN wake signal; maintains 5V rail during sleep with 30µA IQ. Use Value: 5µA shutdown current minimizes parasitic drain; PGOOD enables clean modem boot after wake event. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480QWRNXTQ1 | 4.5V–36V input, 5A output, 2.1MHz fixed freq, no spread spectrum, 15µA IQ | Lacks 42V transient rating and 98% duty cycle; requires external compensation | Preferred for higher-current (>3A), lower-IQ designs where spread spectrum is not required |
| TPS62933QPWRRQ1 | 3V–36V input, 3A output, 1.8–2.2MHz programmable, 15µA IQ, no PGOOD | No power-good output; no cold-crank optimized duty cycle; smaller 3mm × 3mm QFN | Suitable for space-constrained modules where sequencing is handled externally and cold-crank margin is less critical |
Compared with LM61480QWRNXTQ1 and TPS62933QPWRRQ1, MAX16907SAUE/V+ uniquely combines 42V transient tolerance, 98% duty cycle, integrated PGOOD, and factory-enabled spread spectrum - making it optimal for safety-critical automotive power rails where reliability under extreme conditions is non-negotiable.
Availability
MAX16907SAUE/V+ is available at Aetrix Electronics and suitable for automotive ECU, ADAS camera module, infotainment head unit, telematics control unit, and industrial high-voltage DC-DC converter applications requiring stable component supply across extended temperature and harsh electrical environments.
Supply support for MAX16907SAUE/V+ 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 MAX16907 belongs to Maxim's automotive power-supply portfolio, engineered specifically for demanding vehicle subsystems requiring high input voltage range, ultra-low quiescent current, and AEC-Q100 qualification.
FAQ
What is the absolute maximum input voltage rating for MAX16907SAUE/V+?
The MAX16907SAUE/V+ has an absolute maximum input voltage of +42V on both SUP and SUPSW pins, allowing it to withstand automotive load-dump transients without external protection. This rating is validated per ISO 7637-2 Pulse 5a testing. Operation above 36V is limited to transient events <1 second; continuous operation must remain within 3.5V–36V. The device enters overvoltage protection if output exceeds 110% of set point, but input overvoltage does not trigger shutdown - only internal thermal or current limits do.
Does MAX16907SAUE/V+ support adjustable output voltage, and how is it configured?
Yes, MAX16907SAUE/V+ supports 1V–10V adjustable output via the FB pin. To configure, connect a resistive divider from OUT to FB to GND, where FB is held at 1.0V ±1.5%. Use RFB1 = RFB2 × (VOUT / 1.0V − 1) with RFB2 typically 10kΩ. For 5V fixed output, tie FB directly to BIAS - eliminating external resistors and reducing no-load current to 30µA. The FB input bias current is only 10nA, minimizing divider error.
How does the spread-spectrum feature work in MAX16907SAUE/V+?
The spread-spectrum feature in MAX16907SAUE/V+ is factory-enabled only in the "S" version (e.g., MAX16907SAUE/V+) and modulates the 2.2MHz switching frequency by ±6% using a 400µs triangular waveform (±200µs ramp). This reduces peak EMI amplitude by spreading energy across a 264kHz band, easing CISPR-25 Class 5 compliance. Spread spectrum is automatically disabled when FSYNC is active; however, the device accepts externally generated spread-spectrum clocks.
What thermal management is required for MAX16907SAUE/V+ in TSSOP-16 package?
MAX16907SAUE/V+ in TSSOP-16 requires connection of the exposed pad (EP) to a ≥200mm² solid copper ground plane with ≥6 thermal vias (0.3mm diameter) to achieve θJA = 38.3°C/W. Without proper EP soldering, junction temperature can exceed +150°C at 3A load and +70°C ambient. Derating begins above +70°C ambient at 26.1mW/°C; maximum continuous power dissipation is 2088.8mW at TA = +70°C. Thermal shutdown activates at +175°C with 15°C hysteresis.
Can MAX16907SAUE/V+ operate during automotive cold-crank conditions?
Yes, MAX16907SAUE/V+ is specifically designed for cold-crank operation: it maintains 98% duty cycle at 2.2MHz and regulates output down to 3.5V input. During a 6V cold-crank event with 5V output, the device sustains regulation without dropout due to its high-duty-cycle architecture and separate SUP/SUPSW supplies. The BIAS LDO remains active down to 3.1V (UVLO threshold), ensuring controller functionality throughout cranking. This behavior is verified across –40°C to +125°C.
MAX16907SAUE/V+ 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP-EP
MAX16907SAUE/V+ FAQ
1.How can I place an order for MAX16907SAUE/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16907SAUE/V+ 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/V+ reliable?
The price and inventory of MAX16907SAUE/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16907SAUE/V+ is usually 5 days.
3.What payment methods are accepted for MAX16907SAUE/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16907SAUE/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16907SAUE/V+?
MAX16907SAUE/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16907SAUE/V+ 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/V+?
For technical support, including MAX16907SAUE/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16907SAUE/V+ requirements.
6.How does Aetrix verify that MAX16907SAUE/V+ is sourced from the original manufacturer or authorized distributors?
All MAX16907SAUE/V+ 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/V+ meets industry standards.
7.What is the process for return or replacement of MAX16907SAUE/V+?
All MAX16907SAUE/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16907SAUE/V+, 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/V+ part is unused and in its original packaging.
Return procedure for MAX16907SAUE/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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