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Analog Devices Inc./Maxim Integrated MAX16907RAUE/V+
- Part No.:
- MAX16907RAUE/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MAX16907RAUE/V+.pdf
- Description:
- IC REG BUCK ADJ/1V 3A 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:855
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Product details
Overview
MAX16907RAUE/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 at up to 3A. 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 MAX16907RAUE/V+ datasheet, MAX16907RAUE/V+ pinout, MAX16907RAUE/V+ application, or MAX16907RAUE/V+ equivalent, key selection criteria include its 42V transient tolerance, 98% max duty cycle during cold-crank undervoltage events, spread-spectrum EMI reduction (factory-enabled in /V+ variant), PGOOD monitoring, and TQFN-16 (5mm × 5mm) thermally enhanced package with exposed pad.
Technical Context
The MAX16907RAUE/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-loop architecture enhancements. Its dual-supply inputs (SUP and SUPSW) decouple bias and switch-driver power paths, enabling stable operation during 3.5V cold-crank transients.
It integrates a 5V linear regulator (BIAS) with 4.7–5.3V output and 3.1V UVLO, supports external clock synchronization (FSYNC), and enters skip mode below 300mA load to reduce standby current to 30µA. Overvoltage protection triggers at 110% VFB (≈1.1V), and thermal shutdown activates at +175°C with 15°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V - supports automotive battery range including cold-crank (≥3.5V) and load-dump survival (42V transient tolerance) |
| Output Current | 3A continuous - sustains full load at 125°C ambient with TQFN thermal resistance (θJA = 35°C/W) |
| Switching Frequency | 1MHz to 2.2MHz - resistor-programmable via FOSC pin; 2.2MHz enables compact 2.2µH inductor and low-output-capacitance designs |
| 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 (via external resistive divider) - supports MCU core, I/O, and sensor rail flexibility |
| Protection Features | Overcurrent limit (3.4–6A ILX), overvoltage (110% VFB), thermal shutdown (+175°C), and short-circuit recovery - eliminates need for external fault management circuitry |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive applications per AEC-Q100 stress test requirements |
Pinout & Package
MAX16907RAUE/V+ is housed in a 16-pin TQFN package (5mm × 5mm, 0.5mm pitch) with exposed thermal pad (EP) requiring connection to a large-area ground plane for thermal performance (θJC = 2.7°C/W).
| 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% accuracy |
| 3 (PGOOD) | Open-drain power-good monitor | Asserts low when VOUT falls below 92.5% of regulation; deasserts above 95% - enables precise power sequencing |
| 4 (OUT) | Switch-regulator output | Delivers regulated voltage; powers internal circuitry during 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 | Connect RC compensation network (e.g., RCOMP = 20kΩ, CCOMP1 = 1000pF, CCOMP2 = 12pF) for loop stability |
| 7 (BIAS) | Integrated 5V LDO output | Bypassed with 1µF ceramic capacitor; powers internal logic and gate drivers; UVLO at 2.9–3.3V |
| 8 (GND) | Analog/digital ground | Main signal return; must be connected to EP and system ground plane with low-inductance path |
| 9 (BST) | Bootstrap supply for high-side driver | Requires 0.1µF capacitor between BST and LX; enables efficient high-side MOSFET gate drive |
| 10 (SUP) | Main supply input | Powers internal LDO; requires ≥4.7µF ceramic input capacitor; rated –0.3V to +42V absolute max |
| 11–12 (LX) | Switch-node output | Connects to inductor and Schottky diode cathode; handles 4A RMS current; voltage swing from GND to VSUPSW |
| 13–14 (SUPSW) | High-side switch supply input | Powers internal MOSFET driver; requires 0.1µF + 4.7µF decoupling; tolerant to 42V transients |
| 15 (EN) | Enable input | Logic-compatible with 3.3V/5V/12V systems; high-threshold = 2V, low-threshold = 0.9V; shuts down IC to 5µA |
| 16 (I.C.) | Internally connected | Must be tied to GND; not functional - internal bond wire connection only |
| EP | Exposed thermal pad | Primary thermal path; requires soldered connection to solid copper ground plane (not sole GND connection) |
Key Features
| Feature | Design Value |
|---|---|
| Spread-spectrum modulation | Factory-enabled in /V+ variant: ±6% triangular frequency dither at 400µs period - reduces peak EMI by >10dB without external components |
| High-duty-cycle undervoltage operation | Maintains 98% duty cycle at 2.2MHz during cold-crank (e.g., 6V input → 5V output), preventing output collapse |
| Fast transient recovery | Sub-100µs output voltage recovery from 1A load step (skip mode) and <200µs (PWM mode) - protects downstream 1.2V/1.8V logic rails |
| Low-noise standby mode | 30µA quiescent current with VOUT = 5V and no load - enables >1-year battery life in always-on telematics modules |
| Robust fault handling | Auto-recovery thermal shutdown and 16ms hiccup-mode overload protection - prevents latch-up during sustained short-circuit conditions |
Applications
| Engine Control Unit (ECU) Power Supply | Advanced Driver Assistance Systems (ADAS) |
|---|---|
|
Use Scenario: Powers microcontroller, CAN transceiver, and analog sensors in gasoline/diesel engine control modules exposed to –40°C to +125°C ambient and 42V load-dump transients. IC Role / Device Role / Timing Role: Primary 5V buck regulator supplying MCU core and I/O rails; provides PGOOD for safe boot sequencing and EN control from KL15 ignition signal. Use Value: 30µA standby current extends battery life during vehicle off-state; 98% duty cycle maintains regulation during 6V cold-crank, avoiding ECU reset. |
Use Scenario: Supplies image signal processor (ISP), radar SoC, and camera interface in forward-facing ADAS cameras mounted near windshield. IC Role / Device Role / Timing Role: Point-of-load converter generating clean 3.3V/1.8V rails from 12V battery; synchronized to system clock via FSYNC to avoid beat frequencies with image capture timing. Use Value: Spread-spectrum EMI reduction meets CISPR-25 Class 5 radiated emissions limits; 2.2MHz switching avoids AM/FM radio bands. |
| Automotive Infotainment Head Unit | Industrial Vehicle Telematics |
|
Use Scenario: Powers application processor, display controller, and audio codec in center-stack infotainment systems subject to repeated load-dump and jump-start events. IC Role / Device Role / Timing Role: Main 5V supply with adjustable output option for DDR memory termination; uses BIAS LDO to power internal logic independently of output loading. Use Value: Dual SUP/SUPSW inputs isolate bias and power-switch domains, ensuring stable startup even when SUPSW sags during cranking. |
Use Scenario: Provides regulated 5V for GPS/GNSS module, cellular modem, and CAN FD gateway in fleet-management telematics devices deployed in commercial trucks. IC Role / Device Role / Timing Role: Always-on power source with EN controlled by CAN wake-up frame; PGOOD signals host MCU when rail is stable after ignition-on transition. Use Value: 5µA shutdown current enables multi-year operation on backup coin cell; 42V transient tolerance eliminates need for external TVS clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480QPWPRQ1 | 4A output, 3.5–36V input, 2.1MHz fixed frequency, 15µA IQ, no spread spectrum, QFN-16 (4mm × 4mm) | Lacks factory spread-spectrum; smaller footprint but higher θJA (42°C/W) limits 3A operation at >85°C ambient | Select if board space is constrained and EMI filtering can be added externally; verify thermal margin at full load and max ambient. |
| TPS543B20RHLR | 3A, 4–18V input (not 36V), 2.2MHz, 12µA IQ, PMBus interface, 20-pin VQFN | Narrower input range excludes 24V industrial and 36V automotive use; adds digital configurability but increases BOM cost and layout complexity | Choose only for 12V systems requiring telemetry or dynamic voltage scaling; unsuitable for direct 24V/36V battery replacement. |
Compared with LM61480QPWPRQ1 and TPS543B20RHLR, MAX16907RAUE/V+ uniquely combines 36V input rating, factory spread-spectrum EMI reduction, and 30µA standby current in a thermally optimized 5mm × 5mm package - making it optimal for space-constrained, emission-sensitive, always-on automotive modules where input voltage extremes and low IQ are non-negotiable.
Availability
MAX16907RAUE/V+ is available at Aetrix Electronics and suitable for automotive ECU power supplies, ADAS camera modules, infotainment head units, and industrial telematics requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX16907RAUE/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 MAX16907RAUE/V+ belongs to Maxim's automotive power management portfolio, engineered specifically for harsh-environment DC-DC conversion in engine compartments and ADAS subsystems where reliability, EMI control, and ultra-low IQ are critical.
FAQ
What is the difference between MAX16907RAUE/V+ and MAX16907RAUE?
The /V+ suffix denotes factory-enabled spread-spectrum modulation (±6% frequency dither at 400µs period), which is absent in the base MAX16907RAUE. Both share identical pinout, electrical specs, and thermal performance. MAX16907RAUE/V+ is specified for CISPR-25 Class 5 EMI compliance without external filters, while MAX16907RAUE requires additional shielding or ferrite beads in noise-sensitive applications.
Does MAX16907RAUE/V+ support synchronization to an external clock?
Yes, MAX16907RAUE/V+ supports external clock synchronization via the FSYNC pin. The external clock must exceed the internal oscillator frequency by at least 10% (e.g., >2.42MHz for nominal 2.2MHz operation). When FSYNC is active, the internal spread-spectrum function is disabled, and the device locks to the external frequency with acquisition within one cycle.
What is the minimum inductor value recommended for MAX16907RAUE/V+ at 2.2MHz?
For 2.2MHz operation with 5V output and 14V input, the recommended inductor is 2.2µH (e.g., Wurth 744311220). This yields ~30% peak-to-average ripple current, balancing size, efficiency, and transient response. Inductor saturation current must exceed 4.1A (ILX limit), and DC resistance should be minimized to reduce I²R losses in the 3A load range.
How does MAX16907RAUE/V+ handle cold-crank undervoltage conditions?
MAX16907RAUE/V+ maintains regulation during cold-crank by operating at up to 98% duty cycle at 2.2MHz, allowing output delivery even when input drops to 3.5V. Its dual-supply architecture (SUP and SUPSW) ensures the internal LDO remains powered while the high-side switch continues switching - preventing output collapse and enabling uninterrupted ECU operation during engine start.
Can MAX16907RAUE/V+ be used with a 3.3V output configuration?
Yes, MAX16907RAUE/V+ supports 3.3V output using an external resistive divider from OUT to FB to GND. With VFB = 1.0V (±1.5%), set RFB1 = 2.3×RFB2 (e.g., RFB1 = 230kΩ, RFB2 = 100kΩ). The device regulates accurately across –40°C to +125°C, with line regulation of 0.02%/V and load regulation of 0.5% over 30mA–3A.
MAX16907RAUE/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
MAX16907RAUE/V+ FAQ
1.How can I place an order for MAX16907RAUE/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16907RAUE/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 MAX16907RAUE/V+ reliable?
The price and inventory of MAX16907RAUE/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16907RAUE/V+ is usually 5 days.
3.What payment methods are accepted for MAX16907RAUE/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16907RAUE/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16907RAUE/V+?
MAX16907RAUE/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16907RAUE/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 MAX16907RAUE/V+?
For technical support, including MAX16907RAUE/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16907RAUE/V+ requirements.
6.How does Aetrix verify that MAX16907RAUE/V+ is sourced from the original manufacturer or authorized distributors?
All MAX16907RAUE/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 MAX16907RAUE/V+ meets industry standards.
7.What is the process for return or replacement of MAX16907RAUE/V+?
All MAX16907RAUE/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16907RAUE/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 MAX16907RAUE/V+ part is unused and in its original packaging.
Return procedure for MAX16907RAUE/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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