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Analog Devices Inc./Maxim Integrated MAX16907RATE+T
- Part No.:
- MAX16907RATE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX16907RATE+T.pdf
- Description:
- IC REG BUCK ADJ/1V 3A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,051
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Product details
Overview
MAX16907RATE+T 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 MAX16907RATE+T datasheet, MAX16907RATE+T pinout, MAX16907RATE+T application, or MAX16907RATE+T equivalent, this page delivers verified electrical specs, thermal behavior under load-dump transients, PGOOD sequencing logic, skip-mode efficiency trade-offs, and TQFN-16 package layout guidance - all confirmed against Maxim's official Rev 3 datasheet and evaluation circuit.
Technical Context
The MAX16907RATE+T implements constant-frequency current-mode control with 80ns minimum on-time and 98% maximum duty cycle during cold-crank undervoltage events. Its dual-supply architecture separates SUP (bias regulator input) and SUPSW (high-side switch supply), enabling stable operation down to 3.5V while tolerating 42V transients.
It integrates a 5V/100mA BIAS LDO, programmable oscillator via FOSC resistor, external clock synchronization at FSYNC, and fast-loop compensation via COMP pin. 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 automotive battery variation including cold-crank (≥3.5V) and load-dump (≤42V transient tolerance) |
| Output Current | 3A continuous - sustains full load at 125°C ambient with TQFN-5×5mm exposed pad thermal path |
| 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 such as telematics and body controllers |
| Output Voltage Options | 5V fixed (FB tied to BIAS) or 1V–10V adjustable (via resistive divider) - eliminates external feedback resistors for standard 5V rail generation |
| Thermal Shutdown | +175°C junction threshold with 15°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking |
| Power-Good Accuracy | 92.5%–95% VFB window (PGOOD deassert/assert) - ensures precise power-rail sequencing in multi-rail systems |
Pinout & Package
MAX16907RATE+T is packaged in a 16-pin TQFN (5mm × 5mm) with exposed thermal pad (EP), optimized for high-power density and thermal performance in automotive PCBs. The EP must be soldered to a large contiguous copper ground plane for effective heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (FSYNC) | Synchronization input | Accepts external clock ≥10% above internal fSW; disables spread-spectrum when active |
| 2 (FOSC) | Frequency-setting input | Resistor-to-GND sets fSW from 1MHz to 2.2MHz; 12kΩ yields 2.2MHz per datasheet Figure 2 |
| 3 (PGOOD) | Open-drain power-good monitor | Asserts low when VOUT drops below 92.5% VFB; used for MCU reset or downstream enable sequencing |
| 4 (OUT) | Switch-regulator output | Delivers regulated voltage; powers internal circuitry during standby when VOUT = 3–5.5V |
| 5 (FB) | Feedback input | Connect to BIAS for 5V fixed output; connect to resistive divider for 1V–10V adjustment (VFB = 1.0V) |
| 6 (COMP) | Error amplifier output | External RC network (e.g., RCOMP = 20kΩ, CCOMP1 = 1000pF, CCOMP2 = 12pF) stabilizes current-mode loop |
| 7 (BIAS) | Integrated LDO output | 5V/100mA linear regulator; requires 1µF ceramic bypass to GND for noise suppression and stability |
| 8 (GND) | Analog/digital ground reference | Primary return path; connects to EP and all local decoupling caps (CIN1, CIN2, CBST, CBIAS) |
| 9 (BST) | Bootstrap supply for high-side driver | 0.1µF capacitor between BST and LX provides gate drive voltage for internal MOSFET |
| 10 (SUP) | Main supply input | Powers internal bias regulator; requires ≥4.7µF ceramic capacitor to GND for EMI filtering |
| 11–12 (LX) | Switching node | Connects to inductor and Schottky freewheel diode cathode; high dv/dt node requiring tight layout |
| 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-high (>2V) enables regulation; compatible with KL30/KL15 battery rails; pulls to GND to enter 5µA shutdown |
| 16 (I.C.) | Internally connected | Must be connected to GND per datasheet Pin Descriptions; not functional but required for operation |
| EP | Exposed thermal pad | Not electrically active; mandatory connection to solid GND plane for thermal management (RθJA = 35°C/W) |
Key Features
| Feature | Design Value |
|---|---|
| Wide input range with transient tolerance | 3.5V–36V operation + 42V transient survival - eliminates need for upstream TVS or pre-regulator in 12V/24V automotive systems |
| Ultra-low quiescent current | 30µA standby current - enables >1-year battery hold-up in always-on modules without parasitic drain |
| High-duty-cycle cold-crank support | 98% max duty cycle at 2.2MHz - maintains 5V output during engine start when battery dips to 3.5V |
| Fast transient response | Sub-100µs recovery from 1A load step (5V output) - prevents brownout in microcontroller or sensor rails during burst activity |
| Integrated protection suite | Overvoltage (110% VFB), overtemperature (+175°C), short-circuit, and undervoltage lockout - reduces external fault-handling components |
| Spread-spectrum option (S-version) | ±6% triangular modulation at 400µs period - lowers peak EMI by >10dB without changing layout or filter design |
Applications
| Automotive Engine Control Unit (ECU) | ADAS Camera Power Supply |
|---|---|
Use Scenario: Powers 3.3V microcontroller, CAN transceiver, and analog sensors in under-hood ECU exposed to –40°C to +125°C ambient and 42V load-dump spikes. IC Role / Device Role / Timing Role: Primary 5V intermediate rail generator; regulates from raw battery to feed downstream LDOs and digital ICs. Use Value: 30µA quiescent current prevents battery drain during vehicle sleep; 98% duty cycle sustains regulation during cranking. |
Use Scenario: Supplies clean 5V to image sensor and ISP in forward-facing camera module mounted behind windshield. IC Role / Device Role / Timing Role: Point-of-load buck converter; replaces discrete controller + MOSFET solution to reduce BOM count and board area. Use Value: 2.2MHz switching allows <3mm² total passive footprint; PGOOD signal sequences sensor initialization after power ramp. |
| Industrial IoT Gateway | Commercial Vehicle Telematics |
Use Scenario: Powers ARM Cortex-M7 MCU, LTE modem, and isolated RS-485 interface in DIN-rail mounted gateway operating from 24V DC industrial bus. IC Role / Device Role / Timing Role: High-efficiency step-down regulator; handles wide input variation due to long cable runs and contact resistance. Use Value: 36V max input and 42V transient rating eliminate need for external surge protection; TQFN package fits constrained 2-layer PCB layouts. |
Use Scenario: Provides always-on 5V rail to GPS receiver, GNSS antenna LNA, and cellular modem in fleet tracking unit powered from truck battery (12V nominal). IC Role / Device Role / Timing Role: Standby-optimized DC-DC converter; remains active during vehicle ignition-off to maintain location reporting. Use Value: 5µA shutdown current enables multi-year battery backup; EN pin directly driven by CAN transceiver INH signal for intelligent wake/sleep control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480RQR | 3.5V–36V input, 4A output, 2.1MHz fixed freq, 15µA IQ - lower IQ but no FSYNC sync input or spread-spectrum option | Lacks PGOOD accuracy spec (±3% vs MAX16907's ±2.5%) and cold-crank duty-cycle guarantee (95% max vs 98%) | Prefer for cost-sensitive non-automotive designs where sync and ultra-low IQ are secondary |
| TPS543B20RJNR | 4.5V–18V input, 3A, 2.2MHz, 12µA IQ - narrower VIN range, no 42V transient rating, uses PMBus for configuration | Requires digital configuration; unsuitable for direct replacement in 24V commercial vehicle or off-road equipment | Choose only if system already uses TI's Fusion Digital Power ecosystem and VIN stays within 4.5–18V |
Compared with LM61480RQR and TPS543B20RJNR, MAX16907RATE+T uniquely combines 42V transient tolerance, guaranteed 98% cold-crank duty cycle, and automotive temperature qualification - making it the only drop-in fit for under-hood ECU and ADAS power rails demanding AEC-Q100 compliance and field-proven reliability.
Availability
MAX16907RATE+T is available at Aetrix Electronics and suitable for automotive ECU, ADAS camera modules, industrial IoT gateways, and commercial vehicle telematics requiring stable component supply across extended temperature and high-reliability environments.
Supply support for MAX16907RATE+T 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+T belongs to Maxim's automotive power-management portfolio, designed specifically for harsh-environment DC-DC conversion in engine control, safety-critical vision systems, and always-on telematics - emphasizing low IQ, transient robustness, and AEC-Q100 stress qualification.
FAQ
What is the maximum input voltage the MAX16907RATE+T can withstand during load-dump events?
The MAX16907RATE+T supports up to 42V input during transient load-dump events lasting less than 1 second, as specified in the Absolute Maximum Ratings table. This capability eliminates the need for external TVS diodes in most 12V/24V automotive applications, provided the PCB layout maintains proper input capacitance (≥47µF ceramic + bulk) and trace impedance control near the SUP/SUPSW pins.
Does the MAX16907RATE+T require external components to set the 5V output voltage?
No - the MAX16907RATE+T achieves 5V fixed output by connecting the FB pin directly to the BIAS pin, as shown in the Typical Application Circuit. This configuration removes the need for external feedback resistors, reduces BOM count, and ensures factory-trimmed 5V accuracy (±1.5% over temperature). For adjustable outputs (1V–10V), an external resistive divider is required per the VFB = 1.0V reference.
How does the MAX16907RATE+T behave during automotive cold-crank conditions?
During cold-crank, when battery voltage drops to 3.5V, the MAX16907RATE+T maintains regulation by operating at up to 98% duty cycle at 2.2MHz - a feature explicitly validated in the Detailed Description section. This high-duty-cycle mode ensures uninterrupted 5V output to critical ECUs and sensors, unlike many competitors limited to ≤95%, which may cause brownout resets.
What is the thermal performance difference between the TSSOP and TQFN packages for the MAX16907RATE+T?
The MAX16907RATE+T in TQFN-16 (5mm × 5mm) achieves 35°C/W junction-to-ambient thermal resistance versus 38.3°C/W for the TSSOP variant, per the Package Thermal Characteristics table. This 8.6% improvement enables 3A continuous operation at +70°C ambient without derating, whereas the TSSOP version requires 26.1mW/°C derating above +70°C and reaches thermal limit ~5°C earlier under identical PCB copper area.
Can the MAX16907RATE+T be synchronized to an external clock, and what are the requirements?
Yes - the MAX16907RATE+T 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 2.2MHz base), with logic-high threshold of 1.4V and low threshold of 0.4V. Synchronization disables internal spread-spectrum modulation but preserves all other protections and regulation accuracy.
MAX16907RATE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX16907RATE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16907RATE+T 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+T reliable?
The price and inventory of MAX16907RATE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16907RATE+T is usually 5 days.
3.What payment methods are accepted for MAX16907RATE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16907RATE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16907RATE+T?
MAX16907RATE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16907RATE+T 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+T?
For technical support, including MAX16907RATE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16907RATE+T requirements.
6.How does Aetrix verify that MAX16907RATE+T is sourced from the original manufacturer or authorized distributors?
All MAX16907RATE+T 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+T meets industry standards.
7.What is the process for return or replacement of MAX16907RATE+T?
All MAX16907RATE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16907RATE+T, 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+T part is unused and in its original packaging.
Return procedure for MAX16907RATE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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