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Analog Devices Inc. LTC3307BEV#TRMPBF
- Part No.:
- LTC3307BEV#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-VFQFN Exposed Pad
- Datasheet:
-
LTC3307BEV#TRMPBF.pdf
- Description:
- IC REG BUCK ADJ 3A 12LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:800
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Product details
Overview
LTC3307BEV#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 - used in FPGA core supplies and compact POL systems.
For engineers reviewing the LTC3307BEV#TRMPBF datasheet, LTC3307BEV#TRMPBF pinout, LTC3307BEV#TRMPBF application, or LTC3307BEV#TRMPBF equivalent, key selection criteria include forced continuous/Burst Mode operation, ±1% VFB accuracy over temperature, 100% duty-cycle dropout capability, and thermal performance in the 2mm × 2mm LQFN package with exposed PGND pad.
Technical Context
The LTC3307BEV#TRMPBF uses constant-frequency peak current mode control with internal compensation, enabling fast transient response without external loop components. Its 22ns minimum on-time supports high VIN/VOUT ratios (e.g., 5.5V→1.8V at 6.6MHz), while slope-compensated PWM ensures stability across load and input variations.
Silent Switcher architecture employs dual, symmetrical power loops and integrated bypass capacitors to suppress common-mode EMI; Burst Mode operation achieves 40µA quiescent current with low-ripple regulation, and MODE/SYNC pin enables seamless transition between pulse-skipping, forced continuous, and synchronized modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.25V to 5.5V - supports single-cell Li-ion, USB PD, and intermediate bus rails without pre-regulation. |
| VOUT Range | 0.5V to VIN - enables direct 0.5V FPGA core supply or adjustable POL outputs down to sub-1V logic rails. |
| Max Output Current | 3A continuous - sustained delivery under thermal limits in 2mm × 2mm LQFN with θJA = 51°C/W. |
| Switching Frequency | 3MHz to 10MHz (RT-programmable) - allows <1µH inductors and <10µF ceramic output caps for ultra-compact layouts. |
| VFB Accuracy | ±1% over –40°C to +125°C - ensures tight output regulation across automotive and industrial ambient conditions. |
| Min On-Time | 22ns - enables high step-down ratios (e.g., 5.5V→0.8V) at 10MHz without pulse skipping. |
| Quiescent Current | 40µA in Burst Mode sleep - extends battery runtime in always-on sensor nodes and portable equipment. |
| Duty Cycle | Up to 100% - maintains regulation during deep dropout (e.g., VIN = VOUT + ILOAD × RDS(ON)). |
Pinout & Package
The LTC3307BEV#TRMPBF 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 and EMI performance.
| 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 reject layout-induced errors. |
| EN (2) | Enable control input | 400mV precision threshold with hysteresis; enables sequencing via resistor divider from upstream rail. |
| VIN (3,8) | Main power input | Dual pins reduce IR drop and parasitic inductance; require parallel low-ESR ceramic bypass to PGND/AGND. |
| PGND (4,7,13) | Power ground return | High-current return path for bottom switch; exposed pad (13) is primary thermal path - must be vias-to-plane. |
| SW (5,6) | Switch node | Drives external inductor; dual pins minimize voltage spikes and EMI; connect with short, wide copper. |
| MODE/SYNC (9) | Mode select & clock sync | Configures Burst/continuous/pulse-skip modes or accepts 3–10MHz external clock for system-wide timing alignment. |
| RT (10) | Frequency programming | Resistor to AGND sets fSW from 3–10MHz; open or tied to VIN selects default 6.6MHz. |
| PGOOD (11) | Power status indicator | Open-drain output asserts high when VOUT is within –2%/+10%; includes 120µs delay and OV/UV hysteresis. |
| FB (12) | Feedback input | Regulates to 500mV; connects to resistor divider from VOUT; phase-lead cap improves transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher® architecture | Reduces radiated EMI by >30dB vs conventional buck ICs - eliminates need for metal shields in space-constrained designs. |
| Burst Mode® operation | Delivers 90%+ efficiency at 1mA load with 40µA IQ - critical for battery-powered IoT endpoints and standby power compliance. |
| 100% duty-cycle capability | Enables dropout operation down to VOUT + ILOAD × (8mΩ PMOS + inductor DCR) - supports brownout resilience in automotive infotainment. |
| Internal compensation | Eliminates external compensation network - reduces BOM count and layout sensitivity while maintaining stability across 10:1 load steps. |
| AEC-Q100 qualified | Rated for automotive junction temperatures up to +125°C (LTC3307BE grade) - validated for engine control, ADAS camera modules, and body electronics. |
| Robust protection suite | Includes output overvoltage lockout, thermal shutdown, short-circuit valley-current limiting, and safe inductor saturation tolerance. |
Applications
| Optical Networking Power | FPGA Core Supply |
|---|---|
Use Scenario: Compact 3.3V-to-1.2V conversion for SFP+ transceiver ASICs in dense line cards with strict EMI limits. IC Role / Device Role / Timing Role: Primary POL regulator delivering clean, low-noise 1.2V at up to 3A with <120µs PGOOD assertion for hot-plug sequencing. Use Value: Silent Switcher architecture meets CISPR 32 Class B emissions without shielding, saving 3.5mm² board area per channel. | Use Scenario: Point-of-load supply for Xilinx Artix-7 FPGA core voltage in edge AI inference accelerators. IC Role / Device Role / Timing Role: High-bandwidth synchronous buck providing 0.85V/2.5A with 22ns min-on-time to support dynamic DVFS transitions. Use Value: 6.6MHz operation enables 0.47µH inductor and 2×22µF 0603 ceramics - reducing solution footprint to 24mm². |
| Automotive Camera Module | Industrial Sensor Node |
Use Scenario: Powering 1.8V image signal processor and 3.3V MIPI interface in AEC-Q100-compliant rear-view cameras. IC Role / Device Role / Timing Role: Dual-rail POL converter with independent EN control and PGOOD monitoring for ASIL-B functional safety diagnostics. Use Value: –40°C to +125°C guaranteed operation and 100% duty cycle enable cold-cranking survival and thermal derating margin. | Use Scenario: Battery-powered wireless vibration sensor with 10-year lifetime requirement and intermittent 500ms wake-up bursts. IC Role / Device Role / Timing Role: Ultra-low-IQ step-down regulator supplying 3.3V MCU and analog front-end from coin cell or energy harvester. Use Value: 40µA Burst Mode IQ extends shelf life beyond 12 years; soft-start prevents inrush-triggered brownout resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62097RWYR | 3A, 2.5–6V input, 2.5MHz max fSW, no Silent Switcher, 12µA IQ in DCS-Control™ eco-mode | Lacks ultralow EMI and 10MHz capability; better suited for cost-sensitive non-EMI-critical industrial controls | Select if EMI filtering budget is constrained but 2.5MHz switching suffices and lower IQ is prioritized over noise. |
| MP2166GQZ-P | 3A, 2.7–6V input, 1.5–4MHz fSW, 25µA IQ, no programmable frequency or Burst Mode | Fixed-frequency operation only; lacks MODE/SYNC flexibility and high-frequency transient response | Choose for simple, fixed-ratio POL where layout space permits larger inductors and EMI is managed externally. |
Compared with TPS62097RWYR and MP2166GQZ-P, the LTC3307BEV#TRMPBF provides superior EMI performance, wider frequency tuning (3–10MHz), and true low-ripple Burst Mode - making it optimal for space-constrained, noise-sensitive, and battery-life-critical designs where 2mm × 2mm size and automotive qualification matter.
Availability
LTC3307BEV#TRMPBF is available at Aetrix Electronics and suitable for FPGA core supplies, optical networking POL rails, and automotive camera modules requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.
Supply support for LTC3307BEV#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, communications, and industrial markets since 1965.
The LTC3307B product line delivers ultra-small, high-frequency, low-EMI synchronous buck regulators for space- and noise-constrained applications including telecom infrastructure, automotive ADAS, and portable medical devices.
FAQ
What is the maximum junction temperature rating for the LTC3307BEV#TRMPBF?
The LTC3307BEV#TRMPBF is rated for an operating junction temperature range of –40°C to +125°C. It incorporates thermal shutdown that activates at approximately 165°C (typical), returning to normal operation once die temperature falls to ~160°C. This grade is AEC-Q100 qualified for automotive under-hood applications where ambient extremes occur.
Can the LTC3307BEV#TRMPBF operate with a 2.25V input and 1.8V output at full 3A load?
Yes, the LTC3307BEV#TRMPBF supports 2.25V input down to 1.8V output at 3A in forced continuous mode. At this VIN/VOUT ratio, the required duty cycle is ~80%, well within its 100% capability. Efficiency exceeds 88% per typical curves (Figure G22), and thermal performance remains within spec using the recommended 2-layer JEDEC PCB layout with exposed PGND pad vias.
How does the MODE/SYNC pin configure Burst Mode versus forced continuous operation on the LTC3307BEV#TRMPBF?
On the LTC3307BEV#TRMPBF, tying MODE/SYNC to VIN enables low-ripple Burst Mode operation (IQ = 40µA); floating the pin selects forced continuous mode (fixed frequency, reverse inductor current allowed); grounding it selects pulse-skipping mode. No external components are needed - configuration is purely DC bias level, simplifying design and reducing BOM count.
Does the LTC3307BEV#TRMPBF require external compensation components?
No, the LTC3307BEV#TRMPBF features fully internal compensation. Its peak current mode architecture with built-in slope compensation eliminates the need for external Type II or Type III networks. Only the FB resistor divider and optional phase-lead capacitor (2–22pF) are required - significantly reducing design complexity and layout sensitivity.
What is the purpose of the AGND pin on the LTC3307BEV#TRMPBF, and how should it be routed?
The AGND pin on the LTC3307BEV#TRMPBF serves as the remote output voltage sense return and analog reference ground. It must be connected directly to the negative terminal of the output capacitor at the load point - not to the PGND plane - to reject PCB trace resistance errors. A dedicated low-inductance path to the FB divider and RT resistor is mandatory for ±1% regulation accuracy.
LTC3307BEV#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:
- 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:
- 3MHz ~ 10MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-LQFN (2x2)
LTC3307BEV#TRMPBF FAQ
1.How can I place an order for LTC3307BEV#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3307BEV#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 LTC3307BEV#TRMPBF reliable?
The price and inventory of LTC3307BEV#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3307BEV#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3307BEV#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3307BEV#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3307BEV#TRMPBF?
LTC3307BEV#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3307BEV#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 LTC3307BEV#TRMPBF?
For technical support, including LTC3307BEV#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3307BEV#TRMPBF requirements.
6.How does Aetrix verify that LTC3307BEV#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3307BEV#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 LTC3307BEV#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3307BEV#TRMPBF?
All LTC3307BEV#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3307BEV#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 LTC3307BEV#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3307BEV#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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