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Analog Devices Inc. LTC3307AEV#TRPBF
- Part No.:
- LTC3307AEV#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-VFQFN Exposed Pad
- Datasheet:
-
LTC3307AEV#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 3A 12LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,266
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Product details
Overview
LTC3307AEV#TRPBF from Analog Devices is a monolithic synchronous step-down DC/DC converter delivering up to 3A output at 0.5V–VIN from a 2.25V–5.5V input, featuring Silent Switcher® architecture, 22ns minimum on-time, and ±1% VFB accuracy over temperature. It operates in forced continuous, pulse-skipping, or low-ripple Burst Mode® for battery-powered FPGA core supplies and POL applications.
For engineers reviewing the LTC3307AEV#TRPBF datasheet, LTC3307AEV#TRPBF pinout, LTC3307AEV#TRPBF application, or LTC3307AEV#TRPBF equivalent, key selection criteria include its 2mm × 2mm LQFN package with exposed PGND pad, programmable 1MHz–3MHz switching frequency via RT pin, and integrated overvoltage/short-circuit/thermal protection with PGOOD indicator.
Technical Context
The LTC3307AEV#TRPBF uses constant-frequency peak current mode control with internal compensation and supports three operating modes-forced continuous (low ripple), pulse-skipping (low noise), and Burst Mode® (40µA IQ at light load). Its 8mΩ NMOS and 31mΩ PMOS switches enable high efficiency across 0.5V–5.5V output range.
Silent Switcher® architecture minimizes EMI emissions without external shielding, while MODE/SYNC pin enables mode selection or external clock synchronization (1MHz–3MHz). The device tolerates inductor saturation during overload and supports up to 100% duty cycle for low-dropout operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.25V to 5.5V - supports single-cell Li-ion, USB, and intermediate bus rails |
| VOUT Range | 0.5V to VIN - enables direct regulation for sub-1V FPGA/ASIC cores |
| Output Current | 3A continuous - sufficient for high-performance µP and SoC core supplies |
| Switching Frequency | 1MHz to 3MHz (RT-programmable) - allows compact 470nH inductors and small ceramic capacitors |
| Minimum On-Time | 22ns - enables high step-down ratios (e.g., 5V→0.5V at 2MHz) without pulse skipping |
| Feedback Accuracy | ±1% over –40°C to +125°C - ensures stable voltage regulation under thermal stress |
| Quiescent Current | 40µA in Burst Mode sleep - extends battery life in always-on IoT and portable systems |
Pinout & Package
The LTC3307AEV#TRPBF is housed in a thermally enhanced 12-lead 2mm × 2mm × 0.74mm LQFN package with exposed PGND pad (Pin 13) requiring solder connection to PCB ground plane for optimal thermal performance (θJA = 51°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND (Pin 1) | Analog ground reference | Remote sense return for FB; must connect directly to output capacitor negative terminal at load |
| EN (Pin 2) | Enable control input | 400mV precision threshold with hysteresis; enables power-up sequencing with resistor dividers |
| VIN (Pins 3, 8) | Main power input | Dual high-current paths for internal circuitry and top switch; requires parallel low-ESR bypassing to PGND/AGND |
| PGND (Pins 4, 7, Exposed Pad 13) | Power ground return | Primary return path for bottom switch; exposed pad must be soldered to large PCB ground plane with multiple vias |
| SW (Pins 5, 6) | Switch node | High-frequency switching output connected to inductor; requires short, wide trace routing |
| MODE/SYNC (Pin 9) | Mode selection & sync input | Configures Burst Mode® (high), pulse-skipping (low), or forced continuous (float); accepts 1MHz–3MHz external clock |
| RT (Pin 10) | Frequency programming | Resistor-to-AGND sets switching frequency; ignored when external clock applied to MODE/SYNC |
| PGOOD (Pin 11) | Power good indicator | Open-drain output pulled low if VOUT < 97% or > 110% of setpoint, or during fault conditions |
| FB (Pin 12) | Feedback input | Regulates VOUT by sensing 0.5V reference; connects to resistor divider between VOUT and AGND |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher® architecture | Reduces EMI emissions to meet CISPR 22 Class B limits without shielding or ferrites |
| Low-ripple Burst Mode® operation | Delivers 40µA quiescent current with <10mVPP output ripple at light loads |
| 22ns minimum on-time | Enables 5V→0.5V conversion at 2MHz without frequency foldback or instability |
| Integrated protection suite | Includes output overvoltage lockout, short-circuit shutdown, thermal shutdown, and reverse current limiting |
| Thermally optimized LQFN | Exposed PGND pad and low θJA (51°C/W) support 3A continuous operation in compact layouts |
Applications
| FPGA Core Supply | Automotive ADAS Camera Module |
|---|---|
Use Scenario: Powering 0.8V–1.2V core rails of Xilinx Artix-7 or Intel Cyclone V FPGAs in industrial controllers. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering tightly regulated 3A output with fast transient response to handle logic switching currents. Use Value: 22ns minimum on-time and 100% duty cycle capability maintain regulation during deep input droops common in 12V automotive-derived 5V rails. |
Use Scenario: Supplying image sensor and ISP in rear-view or surround-view camera modules operating from 5V vehicle bus. IC Role / Device Role / Timing Role: High-efficiency, low-noise buck converter enabling clean analog supply for CMOS image sensors. Use Value: Silent Switcher® architecture eliminates need for EMI filters, reducing BOM cost and board area in space-constrained camera housings. |
| Portable Medical Monitor | Optical Networking Line Card |
Use Scenario: Generating 1.8V and 3.3V rails for ARM Cortex-M7-based patient monitoring units powered by Li-poly batteries. IC Role / Device Role / Timing Role: Dual-mode regulator operating in Burst Mode® during standby and forced continuous during data acquisition bursts. Use Value: 40µA IQ in Burst Mode® extends battery runtime; ±1% VFB accuracy ensures reliable ADC reference stability. |
Use Scenario: Providing 1.2V core supply to 10G/25G Ethernet PHYs and SerDes on telecom line cards with strict EMI requirements. IC Role / Device Role / Timing Role: Low-noise, synchronized POL converter locked to system clock to avoid beat frequencies. Use Value: MODE/SYNC pin enables external clock synchronization (1MHz–3MHz), eliminating switching noise interference with high-speed serial links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2143GQ-Z | 4A rating, 2.5V–5.5V input, fixed 2.2MHz fSW, no SYNC pin, lower thermal performance (θJA ≈ 65°C/W) | Lacks Burst Mode® and Silent Switcher®; higher EMI requires filtering in sensitive RF environments | Choose MP2143GQ-Z only when higher output current is required and EMI constraints are relaxed. |
| TPS6286418RRLR | 3A rating, 2.7V–6V input, 1.8V fixed output, 2.25MHz fSW, integrated inductor option available | Fixed-output variant; no adjustable VOUT or RT programming; limited to 1.8V applications | Select TPS6286418RRLR only for space-constrained designs where 1.8V fixed output suffices and inductor integration is prioritized. |
Compared with MP2143GQ-Z and TPS6286418RRLR, the LTC3307AEV#TRPBF offers superior EMI performance, wider input/output flexibility, and true programmability-making it optimal for noise-sensitive, multi-rail, and thermally constrained applications where layout space and regulatory compliance are critical.
Availability
LTC3307AEV#TRPBF is available at Aetrix Electronics and suitable for FPGA core supplies, automotive ADAS camera modules, and optical networking line cards requiring stable component supply, long-term manufacturability, and AEC-Q100-aligned reliability.
Supply support for LTC3307AEV#TRPBF 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC3307A product line delivers ultra-small, high-efficiency, low-EMI synchronous buck regulators for space-constrained, noise-sensitive point-of-load applications in portable, automotive, and infrastructure equipment.
FAQ
What is the maximum output current capability of the LTC3307AEV#TRPBF?
The LTC3307AEV#TRPBF delivers up to 3A continuous output current under typical thermal conditions with adequate PCB copper and airflow. Its top switch current limit is 4.5A (typ), and bottom switch valley limit is 3.9A (typ), allowing robust handling of transient overloads without shutdown. Derating applies above +85°C ambient or with insufficient thermal design.
Does the LTC3307AEV#TRPBF support external clock synchronization?
Yes, the LTC3307AEV#TRPBF supports external clock synchronization via the MODE/SYNC pin, accepting square-wave inputs from 1MHz to 3MHz. When synchronized, the device operates in forced continuous mode with automatic slope compensation adaptation, ensuring stable regulation and eliminating beat frequencies in multi-rail systems.
What package type and thermal characteristics does the LTC3307AEV#TRPBF use?
The LTC3307AEV#TRPBF uses a 12-lead 2mm × 2mm × 0.74mm LQFN package with an exposed PGND pad (Pin 13). Its thermal resistance is θJA = 51°C/W on a JEDEC 2S2P PCB. The exposed pad must be soldered to a large PCB ground plane with ≥6 thermal vias to achieve rated performance and prevent thermal shutdown at full load.
How does the LTC3307AEV#TRPBF manage light-load efficiency?
The LTC3307AEV#TRPBF offers three selectable light-load modes via the MODE/SYNC pin: Burst Mode® (40µA IQ, low ripple), pulse-skipping (low noise), or forced continuous (fixed frequency, minimal ripple). Burst Mode® dynamically disables switching circuitry during idle periods, significantly reducing power loss in battery-powered standby applications.
Can the LTC3307AEV#TRPBF operate with a 0.5V output voltage?
Yes, the LTC3307AEV#TRPBF regulates output voltages as low as 0.5V using the FB pin referenced to a precise 0.5V internal bandgap. With standard resistor dividers (e.g., 100kΩ/100kΩ for 1V), it achieves ±1% accuracy across –40°C to +125°C, making it suitable for advanced logic cores requiring sub-1V supplies.
LTC3307AEV#TRPBF 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:
- 1
- Voltage - Input (Min):
- 2.25V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 3A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-LQFN (2x2)
LTC3307AEV#TRPBF FAQ
1.How can I place an order for LTC3307AEV#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3307AEV#TRPBF 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 LTC3307AEV#TRPBF reliable?
The price and inventory of LTC3307AEV#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3307AEV#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3307AEV#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3307AEV#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3307AEV#TRPBF?
LTC3307AEV#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3307AEV#TRPBF 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 LTC3307AEV#TRPBF?
For technical support, including LTC3307AEV#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3307AEV#TRPBF requirements.
6.How does Aetrix verify that LTC3307AEV#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3307AEV#TRPBF 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 LTC3307AEV#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3307AEV#TRPBF?
All LTC3307AEV#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3307AEV#TRPBF, 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 LTC3307AEV#TRPBF part is unused and in its original packaging.
Return procedure for LTC3307AEV#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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