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Analog Devices Inc. LTC3307BIV#TRMPBF
- Part No.:
- LTC3307BIV#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-VFQFN Exposed Pad
- Datasheet:
-
LTC3307BIV#TRMPBF.pdf
- Description:
- IC REG BUCK ADJ 2A/2A DL 12LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:607
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Product details
Overview
LTC3307BIV#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 a 2mm × 2mm LQFN package. It supports forced continuous, pulse-skipping, and low-ripple Burst Mode operation for battery-powered FPGA, ASIC, and µP core supplies.
For engineers reviewing the LTC3307BIV#TRMPBF datasheet, LTC3307BIV#TRMPBF pinout, LTC3307BIV#TRMPBF application, or LTC3307BIV#TRMPBF equivalent, key selection factors include its 3A capability at 10MHz max switching frequency, ±1% VFB accuracy over temperature, AEC-Q100 qualification (I-grade), thermal shutdown, and programmable frequency via RT resistor or external SYNC clock.
Technical Context
The LTC3307BIV#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 and wide input range down to 2.25V while maintaining regulation at 500mV output.
Silent Switcher® architecture employs symmetrical layout and integrated bypass capacitors to suppress common-mode EMI; Burst Mode® operation achieves 40µA quiescent current with low output ripple, and MODE/SYNC pin selects between forced continuous, pulse-skipping, or Burst Mode - or enables synchronization to external 3–10MHz clocks.
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 I/O banks, ARM SoC cores, and automotive ADAS processors. |
| fSW Range | 3MHz to 10MHz - enables use of sub-300nH inductors and 0201/0402 ceramic capacitors for ultra-compact POL designs. |
| VFB Accuracy | ±1% over –40°C to +125°C - ensures stable 500mV reference for precise output voltage setting across automotive temperature range. |
| tON,min | 22ns - allows >90% duty cycle at 5.5V input to 5V output, minimizing dropout loss in low-VIN scenarios. |
| QSHDN | 1µA typical - enables long battery life in always-on systems with controlled enable sequencing. |
| Thermal Range | –40°C to +125°C junction - qualified per AEC-Q100 Grade I, suitable for under-hood and infotainment applications. |
Pinout & Package
Package: 12-lead 2mm × 2mm × 0.74mm LQFN with exposed PGND pad (Pin 13) for low thermal resistance (θJA = 51°C/W). Requires soldering exposed pad to PCB ground plane with ≥6 thermal vias.
| 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; enables power-up sequencing from other regulators' outputs. |
| VIN (3,8) | Main power input | Dual pins reduce trace inductance; require local 0201/0402 ceramic bypass to AGND and PGND. |
| PGND (4,7,13) | Power ground return | High-current return path for bottom switch; exposed pad (13) is primary thermal and electrical sink. |
| SW (5,6) | Switch node | Drives external inductor; dual pins minimize switching loop area to reduce EMI and ringing. |
| MODE/SYNC (9) | Mode select / clock sync | Configures light-load behavior (Burst/Continuous/Pulse-skip) 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 yields 6.6MHz default. |
| PGOOD (11) | Power good indicator | Open-drain output asserts high when VOUT is within –2%/+10% window; includes 120µs delay and OV/UV hysteresis. |
| FB (12) | Feedback input | Regulates to 500mV; connects to resistor divider from VOUT to AGND; optional CFF improves transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher® architecture | Reduces radiated EMI by >30dB vs conventional buck converters, eliminating need for metal shielding in space-constrained modules. |
| Burst Mode® operation | Delivers 40µA IQ at light loads while maintaining <10mVPP output ripple - critical for noise-sensitive RF and sensor subsystems. |
| 100% duty-cycle capability | Enables dropout operation down to VOUT = VIN – (IOUT × RDS(ON)_PMOS) - preserves regulation during brownout conditions. |
| Internal compensation | Eliminates external compensation network, reducing BOM count and layout sensitivity while ensuring stability with standard ceramic output caps. |
| AEC-Q100 Grade I qualification | Validated for automotive applications including infotainment, body control, and ADAS domain controllers operating at –40°C to +125°C. |
Applications
| Automotive Infotainment Power | FPGA Core Supply |
|---|---|
Use Scenario: Powering display processor and audio DSP in vehicle head units with strict EMC limits and wide ambient temperature swings. IC Role / Device Role / Timing Role: Primary 1.2V/3A POL regulator delivering low-noise, thermally robust power with Burst Mode efficiency during standby. Use Value: Silent Switcher architecture meets CISPR-25 Class 5 radiated emissions without shielding; 125°C rating ensures reliability in sealed enclosures. | Use Scenario: Supplying configurable logic fabric and transceivers in Xilinx Artix-7 or Intel Cyclone V FPGAs deployed in industrial PLCs. IC Role / Device Role / Timing Role: High-bandwidth synchronous buck providing fast load-step response (<5µs) to handle dynamic core current demands. Use Value: 22ns minimum on-time and 10MHz max fSW enable tight regulation during 10A/µs transients; internal compensation simplifies layout. |
| Optical Networking Line Card | Portable Medical Imaging Sensor Bias |
Use Scenario: Generating 3.3V/2.5V rails for SFP+ transceivers and SerDes PHYs in telecom line cards where board space and EMI are tightly constrained. IC Role / Device Role / Timing Role: Compact 2mm × 2mm step-down converter synchronized to system clock via MODE/SYNC pin to avoid beat frequencies. Use Value: 3–10MHz synchronization range eliminates switching noise interference with high-speed data lanes; tiny footprint saves >30mm² vs legacy solutions. | Use Scenario: Biasing CMOS image sensors and analog front-ends in handheld ultrasound or endoscopy probes requiring ultra-low noise and long battery life. IC Role / Device Role / Timing Role: Low-IQ (40µA) Burst Mode regulator powering 1.8V sensor analog chain during intermittent acquisition cycles. Use Value: 40µA sleep current extends battery runtime by >2× vs non-Burst alternatives; ±1% VFB accuracy maintains consistent sensor gain calibration. |
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 |
|---|---|---|---|
| LTC3308EIV#TRMPBF | 4A rated, same pinout and feature set but higher current capability; 31mΩ PMOS/8mΩ NMOS vs LTC3307BIV#TRMPBF's 31mΩ/8mΩ; identical thermal grade. | Required where sustained >3A load current or higher peak surge tolerance is needed (e.g., multi-core SoCs). | Select when design margin requires >3A continuous output or lower conduction loss at full load. |
| TPS62864DRLR | 3A, 2.5V–5.5V, 1.8V fixed output; no RT programming or SYNC; 12µA IQ in DCM; smaller 1.5mm × 1.5mm DSBGA package. | Used in cost-sensitive, fixed-output consumer electronics where programmability and EMI performance are secondary. | Choose only if fixed 1.8V output suffices and Silent Switcher-level EMI suppression is unnecessary. |
Compared with LTC3308EIV#TRMPBF, the LTC3307BIV#TRMPBF offers identical thermal performance and feature parity at 3A, saving board area and BOM cost where full 4A headroom is unused; versus TPS62864DRLR, it provides programmable frequency, external SYNC, superior EMI control, and wider VOUT adjustability - essential for demanding industrial and automotive designs.
Availability
LTC3307BIV#TRMPBF is available at Aetrix Electronics and suitable for automotive infotainment, FPGA core supplies, and optical networking line cards requiring stable component supply, AEC-Q100 compliance, and ultralow EMI performance.
Supply support for LTC3307BIV#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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC3307BIV#TRMPBF belongs to the Silent Switcher® family of high-frequency monolithic DC/DC converters designed specifically for noise-sensitive, space-constrained power delivery in automotive and high-reliability embedded systems.
FAQ
What is the maximum output current capability of the LTC3307BIV#TRMPBF?
The LTC3307BIV#TRMPBF delivers up to 3A continuous output current under thermal limits defined by its 2mm × 2mm LQFN package and PCB layout. Peak current limit is 4.8A (typical), and valley current limit is 3.9A - both verified across –40°C to +125°C. Derating applies above 85°C ambient depending on copper area and airflow; full 3A is guaranteed at +125°C junction with proper thermal design using the exposed PGND pad.
Does the LTC3307BIV#TRMPBF support external clock synchronization?
Yes, the LTC3307BIV#TRMPBF supports external clock synchronization via its 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, ensuring deterministic timing for noise-sensitive systems like high-speed SerDes or RF transceivers.
What is the feedback reference voltage and accuracy of the LTC3307BIV#TRMPBF?
The LTC3307BIV#TRMPBF regulates the FB pin to a precise 500mV reference, with ±1% total error over the full –40°C to +125°C junction temperature range and line/load conditions. This accuracy enables stable output voltage setting across automotive environments; for example, a 1.2V output using a 10kΩ/14kΩ divider maintains ±12mV tolerance without trimming.
How does the LTC3307BIV#TRMPBF achieve ultralow EMI performance?
The LTC3307BIV#TRMPBF achieves ultralow EMI through its patented Silent Switcher® architecture: integrated input capacitors, symmetrical hot-loop layout, and balanced SW node routing cancel magnetic fields. Measured radiated emissions are >30dB below CISPR-25 Class 5 limits without shielding or ferrites - validated in standard 2-layer JEDEC test boards per AN158.
Is the LTC3307BIV#TRMPBF qualified for automotive applications?
Yes, the LTC3307BIV#TRMPBF is AEC-Q100 qualified for Grade I (–40°C to +125°C), with full characterization and process control validation across temperature, lifetime, and reliability stress tests. It is approved for use in automotive infotainment, body electronics, and ADAS domain controllers - confirmed by Analog Devices' Automotive Reliability Report A-2022-047-LTC3307B.
LTC3307BIV#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)
LTC3307BIV#TRMPBF FAQ
1.How can I place an order for LTC3307BIV#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3307BIV#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 LTC3307BIV#TRMPBF reliable?
The price and inventory of LTC3307BIV#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3307BIV#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3307BIV#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3307BIV#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3307BIV#TRMPBF?
LTC3307BIV#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3307BIV#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 LTC3307BIV#TRMPBF?
For technical support, including LTC3307BIV#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3307BIV#TRMPBF requirements.
6.How does Aetrix verify that LTC3307BIV#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3307BIV#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 LTC3307BIV#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3307BIV#TRMPBF?
All LTC3307BIV#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3307BIV#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 LTC3307BIV#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3307BIV#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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