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Analog Devices Inc./Maxim Integrated MAX16907RATE+
- Part No.:
- MAX16907RATE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX16907RATE+.pdf
- Description:
- IC REG BUCK ADJ/1V 3A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,864
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Product details
Overview
MAX16907RATE+ 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 MAX16907RATE+ datasheet, MAX16907RATE+ pinout, MAX16907RATE+ application, or MAX16907RATE+ equivalent, key selection criteria include its 42V transient tolerance, 98% max duty cycle during cold-crank, spread-spectrum EMI reduction (S-version), PGOOD monitoring, and compatibility with 5mm × 5mm TQFN-16EP package in automotive power supply designs.
Technical Context
The MAX16907RATE+ employs current-mode control with fast load-transient response enabled by an integrator architecture enhanced for overshoot recovery. 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 integrates a 5V linear regulator (BIAS) with 4.7–5.3V output and 300mV UVLO hysteresis, supports external clock synchronization via FSYNC (requiring ≥10% higher frequency), and implements skip mode below 300mA load to reduce standby current to 30µA - critical for always-on automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V - supports wide automotive battery range including cold-crank (≥42V transient tolerant) |
| Output Current | 3A continuous - sufficient for powering microcontrollers, sensors, and CAN transceivers in ECUs |
| Switching Frequency | 1MHz to 2.2MHz - adjustable via resistor on FOSC pin; enables compact magnetics and noise optimization |
| Quiescent Current | 30µA at no load - minimizes battery drain in vehicle sleep modes |
| Output Voltage Options | 5V fixed (FB tied to BIAS) or 1V–10V adjustable (via resistive divider) - flexible for diverse SoC I/O and core rail requirements |
| Thermal Protection | +175°C shutdown with +15°C hysteresis - ensures robust operation under sustained high-power conditions |
| Package | TQFN-16 (5mm × 5mm, exposed pad) - optimized for thermal dissipation in space-constrained automotive PCBs |
Pinout & Package
MAX16907RATE+ is housed in a 5mm × 5mm, 16-pin TQFN package with exposed thermal pad (EP), rated for –40°C to +125°C ambient operation. The exposed pad must be soldered to a large contiguous copper ground plane for effective thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (FSYNC) | External clock sync input | Accepts external clock ≥10% above internal fSW; disables internal spread spectrum when active |
| 2 (FOSC) | Frequency-setting resistor node | Connects to GND via resistor (e.g., 12kΩ for 2.2MHz); sets oscillator frequency over 1–2.2MHz range |
| 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 = 3–5V |
| 5 (FB) | Feedback voltage sense input | Set to 1V reference; tie to BIAS for 5V fixed output or use divider for 1–10V adjustment |
| 6 (COMP) | Error amplifier output | Connect RC compensation network here to stabilize control loop against load/transient variations |
| 7 (BIAS) | Integrated 5V LDO output | Powers internal logic; requires 1µF ceramic bypass to GND; UVLO threshold = 3.1V (typ) |
| 8 (GND) | Analog/digital ground reference | Primary signal return; EP must also connect to GND but not serve as sole ground path |
| 9 (BST) | Bootstrap capacitor node | Requires 0.1µF capacitor between BST and LX to drive high-side MOSFET gate |
| 10 (SUP) | Bias supply input | Powers internal LDO; requires ≥4.7µF ceramic capacitor to GND |
| 11–12 (LX) | Switch node | Connects to inductor; drives external 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 ceramic decoupling to GND |
| 15 (EN) | Enable input | Logic-compatible with 3.3V/5V/KL30; high = enable (VEN_HI = 2V min), low = shutdown (ISHDN = 5µA typ) |
| 16 (I.C.) | Internally connected | Must be tied to GND; not functional for user connection |
| EP | Exposed thermal pad | Required thermal path to PCB ground plane; improves θJA to 35°C/W (TQFN) |
Key Features
| Feature | Design Value |
|---|---|
| Wide input range with 42V transient tolerance | Enables direct connection to automotive battery without pre-regulation, surviving load-dump events per ISO 7637-2 |
| 98% maximum duty cycle | Maintains regulation during cold-crank (e.g., 4.5V battery), avoiding brownout in engine start-up sequences |
| 30µA standby current | Extends battery life in always-on modules (e.g., telematics, alarm systems) during vehicle sleep states |
| Adjustable 1–2.2MHz switching frequency | Allows trade-off between inductor size (higher fSW) and conduction losses (lower fSW) in constrained layouts |
| Integrated PGOOD and thermal/overvoltage protection | Reduces external supervision components; enables autonomous fault recovery without host MCU intervention |
| Spread-spectrum option (S-version) | Lowers peak EMI by ±6% triangular modulation at 2.2MHz base - simplifies compliance with CISPR 25 Class 5 |
Applications
| Engine Control Unit (ECU) Power Supply | Advanced Driver Assistance Systems (ADAS) |
|---|---|
|
Use Scenario: Powers 3.3V/5V rails for microcontroller, CAN transceiver, and sensor interfaces in gasoline/diesel engine control modules. IC Role / Device Role / Timing Role: Primary buck regulator converting 12V/24V battery to stable 5V for digital subsystems; provides PGOOD for MCU reset sequencing. Use Value: 30µA quiescent current prevents battery discharge during extended vehicle off-time; 42V tolerance eliminates need for external TVS clamping. |
Use Scenario: Supplies 5V to radar SoCs, camera ISPs, and Ethernet PHYs in forward collision warning and lane departure systems. IC Role / Device Role / Timing Role: High-efficiency point-of-load converter with fast transient response to handle burst-mode processing loads. Use Value: 80ns minimum on-time and current-mode control ensure <100µs recovery from 1A load steps - prevents vision system frame loss. |
| Infotainment Head Unit | Body Control Module (BCM) |
|
Use Scenario: Generates 5V for display controllers, audio codecs, and USB peripherals in automotive infotainment systems. IC Role / Device Role / Timing Role: Main DC-DC stage supporting variable load profiles (idle vs. video playback); synchronized to system clock via FSYNC. Use Value: Adjustable switching frequency avoids AM band interference; spread-spectrum option (S-version) further reduces radiated emissions. |
Use Scenario: Provides always-on 5V supply for door module MCUs, LIN transceivers, and LED drivers in centralized body electronics. IC Role / Device Role / Timing Role: Low-quiescent-current buck converter enabling >1-year battery hold-up in parked vehicle state. Use Value: 5µA shutdown current and EN pin compatibility with KL30 battery line minimize parasitic drain across 10+ BCM nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480-Q1 | 4.5–36V input, 3.5A, fixed 2.1MHz fSW, no spread spectrum, 15µA IQ | Lacks 42V transient rating and 98% duty cycle; better suited for non-cold-crank 12V systems | Choose for lower IQ where cold-crank margin is not required and EMI filtering is handled externally |
| TPS62933-Q1 | 3–36V input, 3A, 1–2.2MHz adjustable fSW, 15µA IQ, no PGOOD, no spread spectrum | Missing PGOOD and overvoltage protection; requires external monitoring circuitry | Choose when board space is critical and system-level sequencing/protection is already implemented |
Compared with LM61480-Q1 and TPS62933-Q1, MAX16907RATE+ uniquely combines 42V transient tolerance, 98% duty cycle, integrated PGOOD, and factory-enabled spread spectrum - making it the only option qualified for full-featured, safety-critical automotive buck conversion without supplemental components.
Availability
MAX16907RATE+ is available at Aetrix Electronics and suitable for automotive ECU power supplies, ADAS domain controllers, and body electronics requiring stable component supply with AEC-Q100 Grade 1 qualification, long-term lifecycle support, and traceable sourcing.
Supply support for MAX16907RATE+ 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 MAX16907RATE+ belongs to Maxim's automotive power management product line, designed specifically for harsh-environment DC-DC conversion in engine compartments and ADAS sensors - emphasizing ultra-low IQ, high transient immunity, and AEC-Q100 reliability.
FAQ
What is the maximum input voltage transient the MAX16907RATE+ can withstand?
The MAX16907RATE+ is rated for 42V input transients with duration less than 1 second, complying with ISO 7637-2 Pulse 5a load-dump requirements. This allows direct connection to automotive batteries without external TVS diodes in most applications. The device maintains regulation during these events due to its 98% maximum duty cycle capability and robust internal high-side switch.
Does the MAX16907RATE+ support both fixed and adjustable output voltages?
Yes, the MAX16907RATE+ supports two output configurations: a 5V fixed output (by connecting FB directly to BIAS) and an adjustable 1V–10V output (using an external resistive divider from OUT to FB to GND). The feedback reference voltage is tightly regulated at 1.0V ±1.5% over temperature, ensuring precise output accuracy in both modes.
How does the MAX16907RATE+ achieve low quiescent current in standby mode?
The MAX16907RATE+ achieves 30µA typical no-load quiescent current by entering skip mode under light loads (<300mA), where most internal circuitry is powered down and the device draws bias current from VOUT (when 3V ≤ VOUT ≤ 5.5V) instead of the main input. In shutdown (EN = low), current drops further to 5µA typical, meeting automotive "always-on" module requirements.
Can the MAX16907RATE+ be synchronized to an external clock, and what are the requirements?
Yes, the MAX16907RATE+ accepts external synchronization via the FSYNC pin. The external clock frequency must exceed the internal oscillator frequency by at least 10% for reliable locking. When synchronized, the internal spread-spectrum function is disabled, but the device will accept an externally generated spread-spectrum clock if needed for EMI reduction.
What thermal performance can be expected from the MAX16907RATE+ in a standard 4-layer PCB layout?
In a JEDEC-standard 4-layer board with 2oz copper and proper thermal vias to inner ground planes, the MAX16907RATE+ (TQFN-16EP) exhibits a junction-to-ambient thermal resistance (θJA) of 35°C/W. At 3A load and 14V input, power dissipation is ~0.8W, resulting in ~28°C junction-to-ambient rise - well within the +125°C ambient rating and +150°C absolute maximum junction temperature limit.
MAX16907RATE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Strip
- 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-TQFN (5x5)
MAX16907RATE+ FAQ
1.How can I place an order for MAX16907RATE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16907RATE+ 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 MAX16907RATE+ reliable?
The price and inventory of MAX16907RATE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16907RATE+ is usually 5 days.
3.What payment methods are accepted for MAX16907RATE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16907RATE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16907RATE+?
MAX16907RATE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16907RATE+ 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 MAX16907RATE+?
For technical support, including MAX16907RATE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16907RATE+ requirements.
6.How does Aetrix verify that MAX16907RATE+ is sourced from the original manufacturer or authorized distributors?
All MAX16907RATE+ 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 MAX16907RATE+ meets industry standards.
7.What is the process for return or replacement of MAX16907RATE+?
All MAX16907RATE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16907RATE+, 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 MAX16907RATE+ part is unused and in its original packaging.
Return procedure for MAX16907RATE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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