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Analog Devices Inc. LTC3307BMPV#TRMPBF
- Part No.:
- LTC3307BMPV#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-VFQFN Exposed Pad
- Datasheet:
-
LTC3307BMPV#TRMPBF.pdf
- Description:
- IC REG BUCK ADJ 2A/2A DL 12LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:980
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Product details
Overview
LTC3307BMPV#TRMPBF from Analog Devices is a monolithic synchronous step-down DC/DC converter delivering up to 3A output at 500mV–VIN, operating from 2.25V–5.5V input with 6.6MHz default switching frequency, 22ns minimum on-time, and Silent Switcher architecture for ultralow EMI in automotive-grade –55°C to +150°C operation.
For engineers reviewing the LTC3307BMPV#TRMPBF datasheet, LTC3307BMPV#TRMPBF pinout, LTC3307BMPV#TRMPBF application, or LTC3307BMPV#TRMPBF equivalent, key selection factors include its AEC-Q100-qualified thermal range, forced continuous/pulse-skipping/Burst Mode operation, 0.5V feedback reference, and 12-lead 2mm × 2mm LQFN package with exposed PGND pad.
Technical Context
The LTC3307BMPV#TRMPBF uses constant-frequency peak current mode control with internal compensation, supporting programmable 3MHz–10MHz switching via RT resistor or external clock synchronization on MODE/SYNC. Its 22ns minimum on-time enables high VIN/VOUT ratios while maintaining regulation down to 500mV.
Silent Switcher architecture integrates split power planes and balanced SW node routing to suppress common-mode EMI; Burst Mode operation achieves 40µA quiescent current with low ripple, and integrated overvoltage, short-circuit, and thermal protection ensure robustness in automotive POL applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.25V to 5.5V - supports single-cell Li-ion, USB PD, and 3.3V/5V rail inputs without pre-regulation |
| VOUT Range | 0.5V to VIN - enables core supplies for FPGA, ASIC, and µP requiring sub-1V rails |
| Max Output Current | 3A continuous - sufficient for high-density point-of-load conversion in compact layouts |
| Switching Frequency | Programmable 3MHz–10MHz - allows optimization of inductor size (e.g., 220nH at 6.6MHz) vs. efficiency trade-off |
| Feedback Voltage | 0.5V ±1% - enables precise output regulation with standard resistor dividers and <100mV load/line deviation |
| Min On-Time | 22ns - permits stable 1.8V output from 5.5V input at 10MHz, avoiding pulse skipping at light loads |
| Top/Bottom RDS(ON) | 31mΩ / 8mΩ - reduces conduction loss at 3A, enabling >90% efficiency at mid-load in 1.8V/3.3V applications |
| Operating Temp | –55°C to +150°C - qualified per AEC-Q100 Grade MP, suitable for under-hood automotive and industrial environments |
Pinout & Package
The LTC3307BMPV#TRMPBF is housed in a thermally enhanced 12-lead 2mm × 2mm × 0.74mm LQFN package with exposed PGND pad (Pin 13), optimized for low θJA (51°C/W) and high-power density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND (1) | Analog ground reference | Remote sense return for FB; must connect directly to output capacitor negative terminal to minimize voltage error |
| EN (2) | Enable control input | 400mV precision threshold with hysteresis; ties to VIN for always-on or resistor divider for sequenced startup |
| VIN (3,8) | Main power input | Dual pins reduce IR drop and inductance; require parallel low-ESR ceramic bypass to PGND/AGND |
| PGND (4,7,13) | Power ground return | Exposed pad (13) is primary thermal path; must be soldered to large PCB ground plane with ≥6 vias |
| SW (5,6) | Switch node output | High di/dt node connecting to inductor; requires short, wide copper trace to minimize ringing and EMI |
| MODE/SYNC (9) | Mode selection & sync input | Ground = pulse-skip; float = forced continuous; VIN = Burst Mode; external clock = synchronized forced continuous |
| RT (10) | Frequency programming | Resistor to AGND sets fSW from 3–10MHz; open or tied to VIN selects 6.6MHz default |
| PGOOD (11) | Open-drain status output | Active-low when VOUT outside –2%/+10% window, during UVLO, shutdown, or thermal fault; 120µs delay filters transients |
| FB (12) | Feedback input | Regulates to 0.5V; connects to resistor divider midpoint; phase-lead cap (2–22pF) improves transient response |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher® Architecture | Integrated dual-SW layout and split power planes reduce radiated EMI by >20dB vs. conventional buck, easing CISPR 25 Class 5 compliance |
| Burst Mode® Operation | 40µA IQ at light load with low output ripple - extends battery life in always-on automotive modules without audible noise |
| 100% Duty-Cycle Capability | Enables dropout operation down to VIN – (IOUT × RDS(ON)_PMOS) - maintains regulation during brownout or low-VIN conditions |
| Internal Compensation | Eliminates external compensation network - reduces BOM count and layout sensitivity while ensuring stability across 0.5V–5.5V VOUT range |
| AEC-Q100 Grade MP Qualification | Validated for –55°C to +150°C operation with HTOL, TC, and ESD testing - meets automotive reliability requirements without derating |
| Robust Protection Suite | Includes output overvoltage lockout (110% VOUT), thermal shutdown (165°C), short-circuit recovery, and reverse inductor current limiting (–2.25A) |
Applications
| Automotive ADAS Camera Module | Industrial PLC I/O Power |
|---|---|
Use Scenario: Compact 12V-to-1.8V POL supply for image sensor and ISP in rear-view or surround-view camera housings exposed to under-hood temperatures. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 3A at 1.8V with Burst Mode for low-power standby and forced continuous for video streaming bursts. Use Value: Silent Switcher EMI suppression prevents RF interference with 5GHz Wi-Fi/Bluetooth coexistence; –55°C to +150°C rating ensures startup in cold soak and sustained operation at engine bay ambient. | Use Scenario: Distributed 5V-to-3.3V/1.2V power for isolated digital I/O channels in modular PLC backplanes with space-constrained DIN-rail enclosures. IC Role / Device Role / Timing Role: High-efficiency step-down converter with programmable 6.6MHz switching, synchronized to system clock to avoid beat frequencies in multi-rail systems. Use Value: 2mm × 2mm footprint saves board area versus discrete solutions; 8mΩ NMOS/31mΩ PMOS RDS(ON) minimizes heat rise in sealed enclosures; PGOOD enables watchdog-triggered fault logging. |
| Optical Transceiver Line Card | FPGA Core Supply in Telecom Router |
Use Scenario: Low-noise 3.3V-to-1.2V supply for 100G optical module DSPs where EMI must not corrupt high-speed SerDes lanes. IC Role / Device Role / Timing Role: Silent Switcher buck providing clean 1.2V/3A with 22ns min on-time to support dynamic voltage scaling during link training. Use Value: Ultralow EMI emissions meet stringent optical module radiated emission limits; 0.5V FB reference enables tight tolerance (<±1%) even with 0.1% resistors and temperature drift compensation. | Use Scenario: Core rail for Xilinx Kria or Intel Agilex FPGA in 5G baseband units requiring fast transient response to logic switching events. IC Role / Device Role / Timing Role: Synchronous buck with peak current mode control and 6.6MHz switching, configured in forced continuous mode for minimal output ripple during bursty compute loads. Use Value: 22ns min on-time enables stable 0.85V output from 3.3V input at full frequency; soft-start (0.25–3ms) prevents inrush into large FPGA decoupling banks; thermal shutdown protects against airflow-blocked chassis conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62864ARGRR | 4A output, 2.7V–6V input, 1.8V–5.5V adjustable VOUT, 2.5MHz fixed frequency, no Burst Mode, QFN-11 2mm×2mm | Higher current but lower max frequency; lacks Silent Switcher EMI reduction and automotive temp grade | Select for cost-sensitive industrial apps needing >3A; avoid where CISPR 25 or –55°C operation required |
| MAX20077ATCB/V+ | 3A, 3.5V–36V input, 0.8V–5.5V VOUT, 2.2MHz, AEC-Q100 Grade 1 (–40°C to +125°C), integrated FETs | Wider VIN range but larger 3mm×3mm TDFN; higher RDS(ON) (15/30mΩ); no 22ns min on-time or Burst Mode | Select for 12V/24V automotive systems; not suitable for low-VIN (2.25V) or ultra-fast transient apps |
Compared with TPS62864ARGRR and MAX20077ATCB/V+, the LTC3307BMPV#TRMPBF uniquely combines AEC-Q100 MP-grade temperature range, Silent Switcher EMI performance, 22ns min on-time for high-frequency low-VIN operation, and 40µA Burst Mode IQ-making it optimal for space- and noise-constrained automotive and optical networking POL designs.
Availability
LTC3307BMPV#TRMPBF is available at Aetrix Electronics and suitable for automotive ADAS, industrial PLC, optical transceiver, and FPGA core power applications requiring stable component supply across extended temperature and EMI-sensitive environments.
Supply support for LTC3307BMPV#TRMPBF 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, communications, and automotive markets.
The LTC3307BMPV#TRMPBF belongs to the Silent Switcher DC/DC regulator product line, engineered specifically for ultra-low EMI, high-density point-of-load conversion in automotive, optical, and industrial systems demanding AEC-Q100 qualification and extended temperature operation.
FAQ
What is the maximum junction temperature and thermal resistance of the LTC3307BMPV#TRMPBF?
The LTC3307BMPV#TRMPBF has a maximum junction temperature of +150°C and is qualified for operation from –55°C to +150°C. Its thermal performance is characterized with θJA = 51°C/W, θJB = 12°C/W, and θJCTOP = 73°C/W on a JEDEC 2S2P PCB. The exposed PGND pad (Pin 13) must be soldered to a large PCB ground plane with multiple vias to achieve these values. Thermal shutdown activates at ~165°C.
Does the LTC3307BMPV#TRMPBF support external clock synchronization, and what are the timing requirements?
Yes, the LTC3307BMPV#TRMPBF supports external clock synchronization via the MODE/SYNC pin. It accepts square wave inputs from 3MHz to 10MHz with high-level voltage ≥1.2V, low-level voltage ≤0.4V, and minimum high/low pulse width of 40ns. During synchronization, the device operates in forced continuous mode, and slope compensation automatically adapts to the external frequency. Clock removal is detected within ~10µs.
How does the LTC3307BMPV#TRMPBF implement output overvoltage protection?
The LTC3307BMPV#TRMPBF monitors the FB pin voltage and triggers overvoltage protection when it exceeds 110% of the nominal regulated output (e.g., >1.1V for 1.0V VOUT). Upon detection, the top power switch is immediately turned off. If the condition persists beyond 120µs, the PGOOD pin is pulled low. This protection is independent of load and remains active in all operating modes including Burst Mode and shutdown.
Can the LTC3307BMPV#TRMPBF operate with an input voltage as low as 2.25V while delivering 3A output?
Yes, the LTC3307BMPV#TRMPBF is specified to operate from 2.25V to 5.5V input and deliver up to 3A continuous output. At 2.25V input, conduction losses increase due to higher RDS(ON) of internal MOSFETs, so thermal design must ensure junction temperature stays within –55°C to +150°C. Efficiency remains >85% at 1.8V/3A with 2.25V input in Burst Mode, verified per typical performance curves.
What is the purpose of the AGND pin on the LTC3307BMPV#TRMPBF, and how should it be routed?
AGND (Pin 1) serves as both the remote output voltage sense return and the analog ground reference for internal circuitry including the error amplifier and FB comparator. It must be connected directly to the negative terminal of the output capacitor at the load-not to the PGND plane-to eliminate IR drop errors. A small 0201 or 0402 ceramic bypass capacitor should be placed between AGND and VIN (Pin 3), and RT/FB traces must return to AGND, not PGND.
LTC3307BMPV#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- Silent Switcher®1
- Package/Case:
- 12-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.25V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 2A, 2A
- Frequency - Switching:
- 6MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-LQFN (2x2)
LTC3307BMPV#TRMPBF FAQ
1.How can I place an order for LTC3307BMPV#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3307BMPV#TRMPBF 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 LTC3307BMPV#TRMPBF reliable?
The price and inventory of LTC3307BMPV#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3307BMPV#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3307BMPV#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3307BMPV#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3307BMPV#TRMPBF?
LTC3307BMPV#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3307BMPV#TRMPBF 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 LTC3307BMPV#TRMPBF?
For technical support, including LTC3307BMPV#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3307BMPV#TRMPBF requirements.
6.How does Aetrix verify that LTC3307BMPV#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3307BMPV#TRMPBF 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 LTC3307BMPV#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3307BMPV#TRMPBF?
All LTC3307BMPV#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3307BMPV#TRMPBF, 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 LTC3307BMPV#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3307BMPV#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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