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Analog Devices Inc. LTC3307BEV#TRPBF
- Part No.:
- LTC3307BEV#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-VFQFN Exposed Pad
- Datasheet:
-
LTC3307BEV#TRPBF.pdf
- Description:
- IC REG BUCK 3A
- Quantity:
- Payment:
- Shipping:
Inventory:1,393
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Product details
Overview
LTC3307BEV#TRPBF 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 a 2mm × 2mm LQFN package. It serves as a high-density POL regulator for FPGA core supplies and battery-powered telecom systems.
For engineers reviewing the LTC3307BEV#TRPBF datasheet, LTC3307BEV#TRPBF pinout, LTC3307BEV#TRPBF application, or LTC3307BEV#TRPBF equivalent, key selection criteria include its 3A continuous output capability, ±1% VFB accuracy over temperature, forced continuous/Burst Mode/pulse-skipping mode flexibility, AEC-Q100 qualification (E-grade), and thermal performance enabled by exposed PGND pad.
Technical Context
The LTC3307BEV#TRPBF uses constant-frequency peak current mode control with internal compensation, supporting programmable switching frequencies from 3MHz to 10MHz via RT resistor or external clock synchronization on MODE/SYNC. Its architecture integrates 8mΩ NMOS and 31mΩ PMOS power switches, enabling fast transient response and dropout operation down to 100% duty cycle.
It implements three selectable operating modes: forced continuous (MODE/SYNC floating), pulse-skipping (MODE/SYNC grounded), and low-ripple Burst Mode® (MODE/SYNC tied to VIN), each with distinct trade-offs in light-load efficiency, output ripple, and EMI. Output regulation is referenced to a precision 500mV FB threshold with ±1% accuracy across –40°C to +125°C.
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. |
| IOUT Max | 3A continuous - sufficient for FPGA core, ASIC I/O, or microprocessor VDD domains. |
| fSW Default | 6.6MHz - enables use of sub-μH inductors (e.g., 220nH) and 0201/0402 capacitors for ultra-compact layouts. |
| VFB Accuracy | ±1% over –40°C to +125°C - ensures stable 0.5V–5.5V output regulation without external trimming. |
| tON,min | 22ns - allows high step-down ratios (e.g., 5.5V→0.5V) at 10MHz without pulse skipping. |
| Quiescent IQ | 40µA in Burst Mode sleep - extends battery runtime in always-on IoT and automotive infotainment modules. |
| Thermal Rating | Junction temp range –40°C to +125°C - qualified per AEC-Q100 Grade E for under-hood and ADAS applications. |
Pinout & Package
The LTC3307BEV#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 (θJB = 12°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND (1) | Analog ground reference | Remote output voltage sense return; must connect directly to output capacitor negative terminal to reject PCB IR drop. |
| EN (2) | Enable control input | 400mV precision threshold with hysteresis; enables power-up sequencing from another rail via resistor divider. |
| VIN (3,8) | Main power input | Dual pins reduce trace inductance; bypass separately to PGND and AGND with low-ESR ceramics placed adjacent to pins. |
| PGND (4,7,13) | Power ground return | Primary thermal and electrical path for bottom switch; exposed pad (13) must be connected to large PCB ground plane with ≥6 vias. |
| SW (5,6) | Switch node | High dv/dt node connecting internal MOSFETs to inductor; requires short, wide copper pour to minimize EMI and ringing. |
| MODE/SYNC (9) | Mode select / clock sync | Configures operating mode (Burst/continuous/pulse-skip) or accepts 3–10MHz external clock for system-level timing alignment. |
| RT (10) | Frequency programming | Sets fSW from 3–10MHz via resistor to AGND; open or tied to VIN selects default 6.6MHz. |
| PGOOD (11) | Power good indicator | Open-drain output asserting high when VOUT is within –2%/+10% window; includes 120µs delay and OV/UV fault detection. |
| FB (12) | Feedback input | Regulates VOUT by holding voltage at 500mV; connects to resistor divider between VOUT and AGND. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher® architecture | Minimizes EMI emissions via integrated magnetic field cancellation, eliminating need for external EMI filters in sensitive RF or medical designs. |
| Low-ripple Burst Mode® | Delivers 40µA quiescent current with <10mVPP output ripple at light loads-ideal for noise-sensitive analog and sensor subsystems. |
| 100% duty-cycle operation | Enables dropout regulation down to VIN – ILOAD × RDS(ON), supporting brownout resilience in automotive cold-crank scenarios. |
| Internal compensation | Eliminates external compensation network, reducing BOM count and layout sensitivity while maintaining stability across 1–10MHz fSW. |
| AEC-Q100 Grade E | Qualified for automotive applications including body control modules and ADAS domain controllers with full reliability test reports available. |
Applications
| Optical Networking Power Supply | FPGA Core Voltage Regulation |
|---|---|
Use Scenario: Providing clean, compact 1.2V/3A supply to SFP+ transceiver ASICs in 1RU optical line cards with strict EMI limits. IC Role / Device Role / Timing Role: Primary POL regulator with integrated Silent Switcher® to meet CISPR 22 Class B radiated emissions without shielding. Use Value: Enables 2mm × 2mm solution size and eliminates discrete EMI filter components, saving >12mm² PCB area versus legacy 3MHz converters. | Use Scenario: Delivering dynamically scaled core voltage (0.75V–1.2V) to Xilinx Artix-7 FPGA in industrial PLC with rapid load transients. IC Role / Device Role / Timing Role: High-bandwidth buck controller using 6.6MHz fSW and 22ns tON,min to maintain regulation during 2A/µs load steps. Use Value: Achieves <15mV undershoot on 0–3A load step without external compensation, reducing need for bulk output capacitance. |
| Automotive Infotainment SoC Supply | Portable Medical Sensor Hub |
Use Scenario: Generating 1.8V/3A for ARM Cortex-A53 application processor in head unit with AEC-Q100 compliance and thermal derating. IC Role / Device Role / Timing Role: Automotive-grade DC/DC with –40°C to +125°C operation, thermal shutdown at 165°C, and EN sequencing from MCU-controlled 3.3V rail. Use Value: Meets ASIL-B functional safety requirements via built-in OVP, SCP, and PGOOD reporting-reducing system-level diagnostic overhead. | Use Scenario: Powering low-noise analog front-end (AFE) and Bluetooth LE SoC in handheld ECG monitor with 24-hour battery life. IC Role / Device Role / Timing Role: Dual-mode regulator operating in Burst Mode during standby (40µA IQ) and forced continuous during signal acquisition. Use Value: Extends coin-cell battery life by 3.2× versus fixed-frequency operation while maintaining <20µVRMS output noise in active mode. |
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 |
|---|---|---|---|
| LTC3308EDE#TRPBF | 4A rated, same pinout and feature set but higher current capability; 12mΩ/35mΩ RDS(ON); slightly larger 3mm × 3mm DFN package. | Better suited for higher-current FPGA I/O banks or dual-core processors requiring >3A. | Select when design margin demands >3A continuous output or future-proofing for higher-power derivatives. |
| TPS62864DLCR | 3A, 2.5V–5.5V input, 1.8V–3.3V fixed-output variants only; no RT programming; 4µA IQ in DCM but lacks Burst Mode ripple control. | Targeted at cost-sensitive consumer electronics where fixed VOUT and minimal BOM are priorities over programmability. | Choose for non-adjustable outputs and lowest possible quiescent current, accepting trade-off in EMI performance and mode flexibility. |
Compared with LTC3308EDE#TRPBF and TPS62864DLCR, the LTC3307BEV#TRPBF uniquely balances ultra-small footprint (2mm × 2mm), programmable 3–10MHz fSW, and low-ripple Burst Mode-making it optimal for space-constrained, noise-sensitive, and thermally demanding applications where 3A suffices.
Availability
LTC3307BEV#TRPBF is available at Aetrix Electronics and suitable for optical networking, automotive infotainment, and portable medical device designs requiring stable component supply, AEC-Q100 qualification, and ultralow EMI performance.
Supply support for LTC3307BEV#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 LTC3307B product line delivers ultra-compact, high-frequency synchronous buck regulators optimized for point-of-load applications demanding minimal PCB area, low EMI, and robust operation across extended temperature ranges.
FAQ
What is the maximum output current capability of the LTC3307BEV#TRPBF?
The LTC3307BEV#TRPBF delivers up to 3A continuous output current under typical thermal conditions (θJA = 51°C/W, TA = 25°C). Peak current limit is 4.8A (typical), and valley current limit is 3.9A, ensuring safe operation during transient overload events without latch-off. Derating applies above 85°C ambient.
Does the LTC3307BEV#TRPBF support external frequency synchronization?
Yes, the LTC3307BEV#TRPBF supports external clock synchronization via the MODE/SYNC pin. Applying a 3MHz–10MHz square wave (≥1.2V high, ≤0.4V low, ≥40ns pulse width) locks the internal oscillator to the external source while automatically adapting slope compensation. During sync, the device operates exclusively in forced continuous mode.
How does the LTC3307BEV#TRPBF achieve ultralow EMI performance?
The LTC3307BEV#TRPBF achieves ultralow EMI through its patented Silent Switcher® architecture, which integrates complementary power switches and symmetrical hot-loop layout to cancel magnetic fields. This reduces radiated emissions by >20dB compared to conventional buck regulators-enabling compliance with CISPR 22 Class B without ferrite beads or metal shielding.
What is the minimum output voltage supported by the LTC3307BEV#TRPBF?
The LTC3307BEV#TRPBF supports output voltages as low as 500mV, regulated via the feedback pin (FB) referenced to an internal 500mV precision bandgap. With appropriate resistor divider selection (e.g., RB = 100kΩ, RA = 100kΩ for 1.0V), it maintains ±1% accuracy across –40°C to +125°C junction temperature.
Is the LTC3307BEV#TRPBF qualified for automotive applications?
Yes, the LTC3307BEV#TRPBF is AEC-Q100 qualified for automotive applications (Grade E, –40°C to +125°C). It undergoes stress testing per automotive reliability standards and includes features critical for vehicle systems: output overvoltage protection, short-circuit protection, thermal shutdown at 165°C, and PGOOD fault reporting with 120µs delay.
LTC3307BEV#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)
LTC3307BEV#TRPBF FAQ
1.How can I place an order for LTC3307BEV#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3307BEV#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 LTC3307BEV#TRPBF reliable?
The price and inventory of LTC3307BEV#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3307BEV#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3307BEV#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3307BEV#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3307BEV#TRPBF?
LTC3307BEV#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3307BEV#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 LTC3307BEV#TRPBF?
For technical support, including LTC3307BEV#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3307BEV#TRPBF requirements.
6.How does Aetrix verify that LTC3307BEV#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3307BEV#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 LTC3307BEV#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3307BEV#TRPBF?
All LTC3307BEV#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3307BEV#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 LTC3307BEV#TRPBF part is unused and in its original packaging.
Return procedure for LTC3307BEV#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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