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Analog Devices Inc. LTC3307BIV#TRPBF
- Part No.:
- LTC3307BIV#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-VFQFN Exposed Pad
- Datasheet:
-
LTC3307BIV#TRPBF.pdf
- Description:
- IC REG BUCK 3A
- Quantity:
- Payment:
- Shipping:
Inventory:2,631
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Product details
Overview
LTC3307BIV#TRPBF from Analog Devices is a monolithic synchronous 3A step-down DC/DC converter operating from 2.25V to 5.5V input, delivering regulated output as low as 0.5V with ±1% accuracy, 6.6MHz default switching frequency, and Silent Switcher architecture for ultralow EMI-used in FPGA core supplies and automotive infotainment power rails.
For engineers reviewing the LTC3307BIV#TRPBF datasheet, LTC3307BIV#TRPBF pinout, LTC3307BIV#TRPBF application, or LTC3307BIV#TRPBF equivalent, key selection criteria include its 22ns minimum on-time, forced continuous/Burst Mode/pulse-skipping mode flexibility, 8mΩ NMOS/31mΩ PMOS RDS(ON), thermal shutdown, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The LTC3307BIV#TRPBF uses constant-frequency peak current mode control with programmable 3MHz–10MHz switching via RT resistor or external SYNC clock, enabling fast transient response and stable regulation across wide VIN/VOUT ratios. Its 22ns minimum on-time supports high step-down ratios (e.g., 5.5V→0.5V at 10MHz) without pulse skipping.
Silent Switcher architecture employs symmetrical layout and integrated bypass capacitors to suppress common-mode EMI; Burst Mode operation achieves 40µA quiescent current while maintaining low output ripple, and internal compensation eliminates external type-II/III networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.25V to 5.5V - supports single-cell Li-ion, USB PD, and automotive 3.3V/5V rails without pre-regulation |
| IOUT Max | 3A continuous - sufficient for FPGA I/O banks or dual-core microprocessor cores |
| VOUT Accuracy | ±1% over temperature - ensures stable logic supply under thermal cycling in industrial environments |
| fSW Range | 3MHz to 10MHz - enables <1µH inductors and 10µF ceramic output caps for ultra-compact POL designs |
| tON,min | 22ns - allows 5.5V→0.5V conversion at 10MHz without duty-cycle limitation |
| RDS(ON) | 8mΩ (NMOS), 31mΩ (PMOS) - minimizes conduction loss at 3A, yielding >90% efficiency at 1.8V/2A |
| Quiescent Current | 40µA in Burst Mode - extends battery life in always-on telematics modules |
| Thermal Range | –40°C to +125°C junction - qualified per AEC-Q100 Grade I for under-hood automotive use |
Pinout & Package
The LTC3307BIV#TRPBF is housed in a thermally enhanced 12-lead 2mm × 2mm × 0.74mm LQFN package with exposed PGND pad (Pin 13) requiring soldering to PCB ground plane for optimal thermal resistance (θJA = 51°C/W).
| 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 PCB IR drop |
| EN (2) | Enable control input | 400mV precision threshold with hysteresis; ties to upstream rail for sequenced power-up |
| VIN (3,8) | Main power input | Dual pins reduce trace inductance; bypass separately to PGND and AGND with 1µF 0201 ceramics |
| PGND (4,7,13) | Power ground return | Exposes thermal pad (Pin 13); requires ≥6 vias to inner ground plane for <12°C/W θJB |
| SW (5,6) | Switch node output | Connects to inductor; shared routing minimizes loop area to suppress EMI |
| MODE/SYNC (9) | Mode selection & clock sync | Ground = pulse-skip; float = forced continuous; VIN = Burst Mode; external 3–10MHz square wave = synchronized |
| RT (10) | Frequency programming | Resistor to AGND sets fSW (3–10MHz); open = 6.6MHz default; driven by SYNC overrides RT |
| PGOOD (11) | Open-drain status flag | Pulls low if VOUT <97% or >110% of setpoint, during UVLO, or thermal shutdown; 120µs delay filters noise |
| FB (12) | Feedback voltage sense | Regulates to 500mV; resistor divider from VOUT sets output; phase-lead cap (2–22pF) improves transient response |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher® architecture | Reduces radiated EMI by >30dB vs conventional buck, eliminating need for metal shielding in space-constrained modules |
| Low-ripple Burst Mode® | Maintains <10mVPP output ripple at light loads while drawing only 40µA, critical for noise-sensitive RF power supplies |
| 100% duty-cycle operation | Enables dropout operation down to VIN – ILOAD×RDS(ON), supporting 3.3V→3.0V core rails with minimal headroom loss |
| Internal compensation | Eliminates external compensation network, reducing BOM count and layout sensitivity for rapid design-in |
| AEC-Q100 Grade I qualification | Validated for automotive applications including infotainment, ADAS camera power, and body control modules |
| Output overvoltage protection | Shuts off top switch if FB exceeds 110% of target, preventing damage to downstream 1.8V/2.5V logic |
Applications
| Automotive Infotainment Power | FPGA Core Supply |
|---|---|
Use Scenario: Powers ARM-based SoC and display interface in vehicle head units with strict CISPR-25 Class 5 EMI limits. IC Role / Device Role / Timing Role: Primary 1.2V/3A POL regulator delivering clean, low-noise supply with Burst Mode for standby audio decoding. Use Value: Silent Switcher architecture meets automotive EMI requirements without ferrite beads or shielded inductors, saving board area and cost. | Use Scenario: Supplies configurable logic fabric in Xilinx Artix-7 FPGA where dynamic load steps exceed 2A/µs. IC Role / Device Role / Timing Role: High-bandwidth synchronous buck providing 1.0V/3A with 22ns min on-time to sustain 10MHz switching during burst loads. Use Value: Peak current mode control and 6.6MHz fSW deliver <5µs transient recovery, preventing logic errors during configuration changes. |
| Optical Network Line Card | Industrial PLC I/O Module |
Use Scenario: Generates 3.3V/3A for SFP+ transceiver PHYs in telecom line cards operating at –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Input-capacitor–less step-down converter accepting 5V backplane input with forced continuous mode for low ripple. Use Value: 8mΩ NMOS RDS(ON) and 125°C junction rating ensure >92% efficiency and reliable operation in fanless enclosures. | Use Scenario: Powers isolated CAN and RS-485 transceivers in DIN-rail mounted controllers exposed to vibration and wide temperature swings. IC Role / Device Role / Timing Role: Robust 3A buck with thermal shutdown and short-circuit protection handling 24V field wiring faults. Use Value: AEC-Q100 qualification and –40°C to +125°C operation guarantee uptime in uncontrolled industrial environments. |
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 |
|---|---|---|---|
| TPS62097RRLR | 3A, 2.5V–6V input, 2.2MHz fixed fSW, no SYNC, 12µA IQ in DCM, QFN-11 (2.5×2.5mm) | Larger footprint, lower switching frequency limits inductor size reduction; lacks Burst Mode low-noise operation | Select when cost sensitivity outweighs EMI performance and compactness; not suitable for CISPR-25 or high-density POL. |
| MP2143GJ-Z | 3A, 2.5V–5.5V input, 1.5MHz/2.2MHz selectable fSW, 25µA IQ, QFN-10 (2×2mm), no Silent Switcher | No EMI-optimized layout; higher radiated emissions require filtering; no AEC-Q100 qualification | Choose for non-automotive consumer applications where EMI is less constrained and qualification is unnecessary. |
Compared with TPS62097RRLR and MP2143GJ-Z, the LTC3307BIV#TRPBF delivers superior EMI performance via Silent Switcher, wider 3–10MHz programmability for optimal size-efficiency trade-offs, and automotive qualification-making it the preferred choice for safety-critical and space-limited power delivery.
Availability
LTC3307BIV#TRPBF is available at Aetrix Electronics and suitable for automotive infotainment systems, FPGA power delivery, and optical networking equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC3307BIV#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and automotive markets.
The LTC3307BIV#TRPBF belongs to the Silent Switcher DC/DC converter product line, engineered specifically for ultra-low EMI power conversion in space-constrained, noise-sensitive applications such as automotive radar and high-speed datacom.
FAQ
What is the maximum supported switching frequency for LTC3307BIV#TRPBF?
The LTC3307BIV#TRPBF supports a programmable switching frequency range of 3MHz to 10MHz. This is achieved either by connecting an external resistor to the RT pin, using the default 6.6MHz oscillator, or synchronizing to an external 3–10MHz square wave applied to the MODE/SYNC pin. The 22ns minimum on-time enables stable operation at the full 10MHz upper limit even with high step-down ratios.
Does LTC3307BIV#TRPBF require external compensation components?
No, the LTC3307BIV#TRPBF features fully internal compensation, eliminating the need for external type-II or type-III compensation networks. This simplifies layout, reduces BOM count, and improves design robustness-especially in high-density applications where parasitic effects can destabilize externally compensated loops.
How does the Silent Switcher architecture in LTC3307BIV#TRPBF reduce EMI?
The LTC3307BIV#TRPBF implements Silent Switcher architecture through symmetrical, balanced power train layout and integrated input bypass capacitors that cancel magnetic field coupling. This reduces peak radiated emissions by >30dB compared to conventional buck converters, enabling compliance with stringent CISPR-25 Class 5 automotive EMI limits without added shielding or filtering components.
What protection features are integrated into LTC3307BIV#TRPBF?
The LTC3307BIV#TRPBF integrates output overvoltage protection (shuts off top switch if FB >110% of target), short-circuit protection (valley current limiting), thermal shutdown (165°C trip), input undervoltage lockout (2.1V rising threshold), and PGOOD fault reporting. These features ensure safe, autonomous operation in unattended systems like automotive ECUs and telecom line cards.
Is LTC3307BIV#TRPBF pin-compatible with other members of the LTC3307 family?
Yes, the LTC3307BIV#TRPBF shares identical pinout and package (12-lead 2mm×2mm LQFN) with all variants in the LTC3307B family-including LTC3307BEV#TRPBF, LTC3307BJV#TRPBF, and automotive-grade LTC3307BIV#WTRPBF-enabling drop-in replacement across temperature grades without PCB redesign.
LTC3307BIV#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:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-LQFN (2x2)
LTC3307BIV#TRPBF FAQ
1.How can I place an order for LTC3307BIV#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3307BIV#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 LTC3307BIV#TRPBF reliable?
The price and inventory of LTC3307BIV#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3307BIV#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3307BIV#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3307BIV#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3307BIV#TRPBF?
LTC3307BIV#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3307BIV#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 LTC3307BIV#TRPBF?
For technical support, including LTC3307BIV#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3307BIV#TRPBF requirements.
6.How does Aetrix verify that LTC3307BIV#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3307BIV#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 LTC3307BIV#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3307BIV#TRPBF?
All LTC3307BIV#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3307BIV#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 LTC3307BIV#TRPBF part is unused and in its original packaging.
Return procedure for LTC3307BIV#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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