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Analog Devices Inc. LTC3307AMPV#TRPBF
- Part No.:
- LTC3307AMPV#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-VFQFN Exposed Pad
- Datasheet:
-
LTC3307AMPV#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 3A 12LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,825
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Product details
Overview
LTC3307AMPV#TRPBF from Analog Devices is a monolithic synchronous step-down DC/DC converter delivering up to 3A output current, operating from 2.25V to 5.5V input, regulating down to 0.5V with ±1% feedback accuracy, and featuring Silent Switcher® architecture for ultralow EMI in a thermally enhanced 12-lead 2mm × 2mm LQFN package - ideal for space-constrained, noise-sensitive FPGA core supplies and automotive infotainment power rails.
For engineers reviewing the LTC3307AMPV#TRPBF datasheet, LTC3307AMPV#TRPBF pinout, LTC3307AMPV#TRPBF application, or LTC3307AMPV#TRPBF equivalent, key selection criteria include its –55°C to +150°C extended temperature rating, 22ns minimum on-time for high VIN/VOUT ratios, forced continuous/pulse-skipping/Burst Mode™ operation flexibility, and integrated 8mΩ NMOS / 31mΩ PMOS power switches enabling high efficiency at light and full load.
Technical Context
The LTC3307AMPV#TRPBF uses constant-frequency peak current mode control with programmable switching frequency from 1MHz to 3MHz via RT resistor or external SYNC clock, and supports three distinct operating modes (forced continuous, pulse-skipping, Burst Mode) selected by MODE/SYNC pin voltage level. Its internal compensation eliminates need for external type-II/III networks.
It integrates overvoltage protection (107–114% VOUT threshold), short-circuit protection, thermal shutdown (165°C trip), and power good monitoring with 120µs delay and ±1.2%/±2.2% hysteresis. 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 PD, and 3.3V/5V intermediate bus rails without pre-regulation. |
| VOUT Range | 0.5V to VIN - enables direct regulation for sub-1V FPGA/ASIC cores and configurable I/O supplies. |
| Output Accuracy | ±1% over temperature - ensures stable logic supply margins across –55°C to +150°C industrial/automotive environments. |
| Switch RDS(ON) | 8mΩ (NMOS) / 31mΩ (PMOS) - minimizes conduction loss and thermal rise at 3A continuous load. |
| Min On-Time | 22ns - allows high step-down ratios (e.g., 5V→0.5V at 2MHz) without pulse skipping or instability. |
| Quiescent Current | 40µA in Burst Mode sleep - extends battery runtime in always-on sensor nodes and telematics modules. |
| Thermal Rating | –55°C to +150°C junction - qualified for under-hood automotive, avionics, and harsh-environment industrial control. |
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 ≥4 thermal vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND (Pin 1) | Analog ground reference | Remote sense return for FB divider; must connect directly to output capacitor negative terminal at load to reject PCB IR drop. |
| EN (Pin 2) | Enable control input | 400mV precision threshold with 50mV hysteresis; supports accurate power sequencing with resistor dividers from upstream rails. |
| VIN (Pins 3, 8) | Main input power supply | Dual high-current paths for internal circuitry and top switch; requires parallel low-ESR ceramic bypass capacitors near both pins. |
| PGND (Pins 4, 7, Exposed Pad 13) | Power ground return | Primary return for bottom switch and input capacitor; exposed pad is critical for thermal dissipation and EMI reduction. |
| SW (Pins 5, 6) | Switch node | High dv/dt node connecting internal FETs to external inductor; must use short, wide copper trace to minimize ringing and EMI. |
| MODE/SYNC (Pin 9) | Mode selection / clock sync | Configures operation mode (low = pulse-skip, float = forced continuous, high = Burst Mode) or accepts 1–3MHz external clock. |
| RT (Pin 10) | Frequency programming | Resistor-to-AGND sets switching frequency; open or tied to VIN selects default 2MHz oscillator. |
| PGOOD (Pin 11) | Power good indicator | Open-drain output pulled low if VOUT falls below 97% or exceeds 110% of target; includes 120µs filtering delay. |
| FB (Pin 12) | Feedback input | Regulates to 0.5V reference; connects to mid-point of resistor divider between VOUT and AGND to set output voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher® architecture | Reduces radiated EMI by >30dB vs conventional buck converters, eliminating need for metal shielding in compact layouts. |
| Low-ripple Burst Mode® operation | Delivers 40µA IQ at light load while maintaining <10mVpp output ripple - suitable for RF-sensitive analog and sensor subsystems. |
| 22ns minimum on-time | Enables stable 10:1 step-down (e.g., 5V→0.5V @ 2MHz) without requiring higher-frequency ICs or complex multi-stage designs. |
| Integrated 8mΩ/31mΩ MOSFETs | Eliminates external power switches and gate drivers, reducing BOM count and layout area while optimizing efficiency at 3A. |
| –55°C to +150°C operation | Qualified per extended temperature test flow - supports deployment in engine control units, radar modules, and downhole electronics. |
Applications
| FPGA Core Supply | Automotive Infotainment |
|---|---|
Use Scenario: Powering 0.75V–1.2V core rails of Xilinx Artix-7 or Intel Cyclone V FPGAs in compact edge AI gateways. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering regulated 1.0V @ 3A with fast transient response to logic switching currents. Use Value: 22ns min on-time and 2MHz switching enable small 470nH inductors and 10µF ceramic output caps, reducing board area by >40% vs legacy solutions. |
Use Scenario: Generating 1.8V and 3.3V supplies for display processors and audio codecs in head unit mainboards. IC Role / Device Role / Timing Role: Low-noise POL converter operating in forced continuous mode to suppress switching artifacts in audio signal paths. Use Value: Silent Switcher architecture meets CISPR-25 Class 5 radiated emissions limits without ferrite beads or shielded inductors. |
| Industrial PLC I/O Module | Battery-Powered Telematics |
Use Scenario: Providing isolated 5V and 3.3V rails for digital I/O conditioning circuits in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: High-reliability buck converter operating across –40°C to +85°C ambient with derated 150°C junction capability. Use Value: –55°C to +150°C qualification ensures robust startup at cold ambient and sustained operation during cabinet overheating events. |
Use Scenario: Powering LTE modem, GNSS receiver, and CAN transceiver in vehicle tracking devices powered by 3.7V Li-ion. IC Role / Device Role / Timing Role: Efficiency-optimized regulator using Burst Mode to extend standby time beyond 30 days on single charge. Use Value: 40µA quiescent current in sleep state reduces average system draw to <100µA, enabling multi-year battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2143GQ-Z | Fixed 2.2MHz frequency, no MODE/SYNC pin, 0.6V–5.5V VOUT range, 2A max output, –40°C to +125°C rating | Lacks Burst Mode and extended temperature support; simpler interface but less flexible for ultra-low-IQ or automotive use | Select when cost sensitivity outweighs need for 3A output, extended temp, or multi-mode optimization. |
| TPS6286418RRLR | 3A output, 2.7V–6V VIN, 0.6V–5.5V VOUT, 1.8V fixed output option, 1.8MHz default freq, –40°C to +125°C | No Silent Switcher EMI suppression; lacks RT programming and precise EN threshold; optimized for consumer portables | Prefer for non-EMI-critical, volume-sensitive applications where fixed 1.8V output suffices and AEC-Q100 is not required. |
Compared with MP2143GQ-Z and TPS6286418RRLR, the LTC3307AMPV#TRPBF uniquely combines –55°C to +150°C operation, 22ns min on-time, Silent Switcher EMI reduction, and selectable operating modes - making it the only choice for high-reliability, noise-sensitive, wide-temperature automotive and industrial POL designs.
Availability
LTC3307AMPV#TRPBF is available at Aetrix Electronics and suitable for FPGA core supplies, automotive infotainment systems, and industrial PLC I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC3307AMPV#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 precision instrumentation, communications, industrial automation, and automotive markets.
The LTC3307A product line delivers ultra-compact, low-EMI, high-efficiency synchronous buck regulators for space- and noise-constrained point-of-load applications - designed specifically for next-generation automotive ADAS, 5G infrastructure, and battery-powered edge computing.
FAQ
What is the operating temperature range of the LTC3307AMPV#TRPBF?
The LTC3307AMPV#TRPBF is rated for –55°C to +150°C junction temperature, verified per extended qualification testing. This makes it suitable for under-hood automotive applications, avionics power supplies, and industrial equipment deployed in extreme ambient conditions. Derating guidelines apply above 125°C ambient depending on PCB thermal design.
Does the LTC3307AMPV#TRPBF require external compensation components?
No, the LTC3307AMPV#TRPBF features fully internal compensation, eliminating the need for external type-II or type-III compensation networks. Only two external resistors (for FB divider) and standard input/output capacitors plus an inductor are required for basic operation - simplifying layout and reducing BOM count.
How does the MODE/SYNC pin configure operating modes on the LTC3307AMPV#TRPBF?
The MODE/SYNC pin selects among three modes: grounded → pulse-skipping; floating → forced continuous; tied to VIN → Burst Mode. It also accepts 1–3MHz external clocks for synchronization. Each mode offers distinct trade-offs in efficiency, ripple, and EMI - allowing dynamic optimization for varying load profiles in the same design.
Can the LTC3307AMPV#TRPBF be used in AEC-Q100 qualified automotive systems?
Yes - the LTC3307AMPV#TRPBF is explicitly qualified to AEC-Q100 Grade 1 (–40°C to +125°C) and extends to Grade 0 (–55°C to +150°C) per Analog Devices' automotive reliability program. It meets stringent automotive requirements for HTOL, TC, and ESD, and is supported by full automotive reliability reports upon request.
What is the minimum recommended output capacitance for stable operation of the LTC3307AMPV#TRPBF?
Analog Devices specifies a minimum 15µF total ceramic output capacitance (e.g., two 10µF 0603 X7R caps in parallel) for stable operation across all loads and modes. Lower values may cause instability in Burst Mode or poor transient response; higher values improve load step recovery but increase inrush current during soft-start.
LTC3307AMPV#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:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-LQFN (2x2)
LTC3307AMPV#TRPBF FAQ
1.How can I place an order for LTC3307AMPV#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3307AMPV#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 LTC3307AMPV#TRPBF reliable?
The price and inventory of LTC3307AMPV#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3307AMPV#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3307AMPV#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3307AMPV#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3307AMPV#TRPBF?
LTC3307AMPV#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3307AMPV#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 LTC3307AMPV#TRPBF?
For technical support, including LTC3307AMPV#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3307AMPV#TRPBF requirements.
6.How does Aetrix verify that LTC3307AMPV#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3307AMPV#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 LTC3307AMPV#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3307AMPV#TRPBF?
All LTC3307AMPV#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3307AMPV#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 LTC3307AMPV#TRPBF part is unused and in its original packaging.
Return procedure for LTC3307AMPV#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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