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Analog Devices Inc. LTC3307BMPV#TRPBF
- Part No.:
- LTC3307BMPV#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-VFQFN Exposed Pad
- Datasheet:
-
LTC3307BMPV#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 2A/2A DL 12LQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LTC3307BMPV#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 ±1% VFB accuracy. It integrates Silent Switcher architecture for ultralow EMI and supports forced continuous, pulse-skipping, or Burst Mode operation-ideal for space-constrained automotive and industrial POL supplies.
For engineers reviewing the LTC3307BMPV#TRPBF datasheet, LTC3307BMPV#TRPBF pinout, LTC3307BMPV#TRPBF application, or LTC3307BMPV#TRPBF equivalent, key selection criteria include its –55°C to +150°C extended temperature grade, 2mm × 2mm LQFN-12 package with exposed PGND pad, 8mΩ NMOS/31mΩ PMOS RDS(ON), and programmable 3–10MHz switching via RT pin or external SYNC clock.
Technical Context
The LTC3307BMPV#TRPBF 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 compensation adapts automatically during external clock synchronization (3–10MHz).
Silent Switcher architecture employs symmetrical layout and integrated bypass capacitors to suppress common-mode EMI; combined with low-ripple Burst Mode (40µA IQ) and 100% duty-cycle dropout capability, it meets stringent noise and efficiency requirements in optical networking and automotive ADAS subsystems.
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 rail inputs without pre-regulation |
| VOUT Range | 0.5V to VIN - enables direct core supply for FPGA/ASIC requiring sub-1V rails |
| Max Output Current | 3A continuous - sustained delivery with thermal derating per θJA = 51°C/W and exposed PGND pad |
| Switching Frequency | Programmable 3–10MHz - allows optimization of inductor size (e.g., 220nH @ 6.6MHz) and transient bandwidth |
| Feedback Accuracy | ±1% over –55°C to +150°C - ensures stable regulation across full automotive temperature range |
| Quiescent Current | 40µA in Burst Mode sleep - extends battery life in always-on vehicle telematics modules |
| Min On-Time | 22ns - enables high-step-down conversion (e.g., 5.5V→0.6V) at 10MHz without pulse skipping |
| EMI Performance | Ultralow emissions per CISPR 25 Class 5 - eliminates need for external EMI filters in infotainment power stages |
Pinout & Package
The LTC3307BMPV#TRPBF is housed in a thermally enhanced 12-lead 2mm × 2mm × 0.74mm LQFN package with exposed PGND pad (Pin 13), optimized for low θJB = 12°C/W and high-current PCB routing.
| 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 another regulator's output |
| VIN (3,8) | Main power input | Dual pins reduce trace inductance; require local 4.7µF ceramic + 1µF 0201 bypass to AGND/PGND |
| PGND (4,7,13) | Power ground return | Exposed pad (Pin 13) is primary thermal path; must connect to large internal/external ground plane with ≥6 vias |
| SW (5,6) | Switch node | High dv/dt node connecting to inductor; requires shortest possible wide copper pour to minimize EMI and ringing |
| MODE/SYNC (9) | Mode select / clock sync | Configures operation mode (low = pulse-skip, float = forced continuous, high = Burst Mode) or accepts 3–10MHz external clock |
| RT (10) | Frequency programming | Resistor to AGND sets fSW; 38.3kΩ yields 6.0MHz; open circuit defaults to 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 hysteresis |
| FB (12) | Feedback input | Regulates to 500mV; connects to resistor divider from VOUT to AGND; phase-lead cap (2–22pF) improves transient response |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher® Architecture | Integrated dual-input power path and symmetrical layout reduce radiated EMI by >30dB vs conventional buck, eliminating costly shielding |
| Low-Ripple Burst Mode® | 40µA quiescent current with <10mVPP output ripple at light loads-enables clean power for RF transceivers and ADC references |
| 100% Duty-Cycle Operation | Enables dropout operation down to VIN – ILOAD×RDS(ON)-critical for maintaining 1.8V core supply during cold-crank (4.5V min) |
| AEC-Q100 Qualified | Rated for –55°C to +150°C junction temperature with lifetime validation per automotive reliability standards |
| Internal Compensation | Eliminates external compensation network-reduces BOM count and layout sensitivity while maintaining stability across 2.25–5.5V input range |
Applications
| Automotive ADAS Camera Module | Optical Network Line Card |
|---|---|
Use Scenario: Powering 1.2V image sensor and 1.8V ISP in compact rear-view camera housing exposed to under-hood temperatures. IC Role / Device Role / Timing Role: Primary POL regulator converting 5V system rail to precise low-noise core voltages with EMI immunity near high-speed MIPI interfaces. Use Value: Silent Switcher architecture prevents interference with 2.5Gbps MIPI CSI-2 video streams; –55°C to +150°C rating ensures startup at extreme cold soak. | Use Scenario: Generating 3.3V and 1.2V rails for SFP+ transceivers and SerDes PHYs on dense line cards with strict thermal limits. IC Role / Device Role / Timing Role: High-frequency (6.6MHz) point-of-load converter minimizing inductor footprint while meeting <10mVPP ripple spec for jitter-sensitive optics. Use Value: 22ns min on-time enables efficient 5V→3.3V conversion at 6.6MHz; 8mΩ NMOS RDS(ON) reduces conduction loss in 3A channel. |
| Industrial PLC I/O Module | FPGA Core Supply |
Use Scenario: Providing isolated 1.8V/3.3V rails for ARM Cortex-M7 microcontroller and analog front-end in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Robust DC/DC with overvoltage, short-circuit, and thermal protection-operating continuously in unventilated enclosures up to 70°C ambient. Use Value: 100% duty-cycle capability maintains regulation during brownouts; PGOOD signal enables safe firmware reset on undervoltage events. | Use Scenario: Delivering 0.85V core voltage to Xilinx Artix-7 FPGA with dynamic load steps up to 2A/µs in edge AI inference accelerators. IC Role / Device Role / Timing Role: Fast-transient synchronous buck using peak current mode control and internal compensation to suppress voltage droop during logic switching. Use Value: 6.6MHz switching enables 220nH inductor and <10µF total output capacitance-reducing solution size by 40% vs 2MHz alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3308EV#TRPBF | 4A rated, pin-compatible but larger RDS(ON) (12mΩ NMOS), no AEC-Q100 qualification, max TJ = 125°C | Targeted at commercial telecom and computing; lacks extended temp and automotive reliability data | Select when higher current headroom is needed and automotive qualification is not required |
| TPS62864DRLR | 3A, 2.5–5.5V input, 1.8V fixed output only, no RT pin, 4µA IQ, but no Burst Mode or SYNC capability | Fixed-output, ultra-low-IQ applications like wearables; lacks programmability and EMI robustness | Select for cost-sensitive, non-automotive designs where output voltage is fixed and EMI is less critical |
Compared with LTC3308EV#TRPBF and TPS62864DRLR, the LTC3307BMPV#TRPBF uniquely combines AEC-Q100 qualification, 3–10MHz programmability, Silent Switcher EMI suppression, and –55°C to +150°C operation-making it the only choice for safety-critical automotive and harsh-environment industrial POL.
Availability
LTC3307BMPV#TRPBF is available at Aetrix Electronics and suitable for automotive ADAS, optical networking line cards, industrial PLCs, and FPGA core supplies requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC3307BMPV#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, communications, and automotive markets since 1965.
The LTC3307BMPV#TRPBF belongs to Analog Devices' Power by Linear™ family of high-frequency, low-EMI DC/DC regulators designed specifically for space-constrained, noise-sensitive applications in automotive, optical, and industrial systems.
FAQ
What is the maximum junction temperature rating for the LTC3307BMPV#TRPBF?
The LTC3307BMPV#TRPBF is guaranteed over a junction temperature range of –55°C to +150°C, with overtemperature protection engaging at ~165°C and releasing at ~160°C. This extended rating is validated per AEC-Q100 Grade 0 requirements and enables deployment in engine bay and under-hood automotive modules where ambient temperatures exceed 105°C.
How does the MODE/SYNC pin configure operating modes on the LTC3307BMPV#TRPBF?
The MODE/SYNC pin on the LTC3307BMPV#TRPBF selects three distinct modes: grounding enables pulse-skipping for low-noise operation; tying to VIN activates low-ripple Burst Mode with 40µA IQ; floating enables forced continuous conduction for fixed-frequency, minimal-ripple performance. When driven by an external 3–10MHz square wave, it synchronizes the internal oscillator while enforcing forced continuous mode.
Can the LTC3307BMPV#TRPBF operate with a 2.25V input and 1.8V output at full 3A load?
Yes-the LTC3307BMPV#TRPBF supports 2.25V–5.5V input and delivers 3A continuously at 1.8V output. At 2.25VIN/1.8VOUT, the required duty cycle is ~80%, well within its 100% capability. Thermal performance must be verified using θJA = 51°C/W and the actual board layout, as RDS(ON) increases at low VIN.
What is the purpose of the AGND pin on the LTC3307BMPV#TRPBF, and how should it be routed?
The AGND pin on the LTC3307BMPV#TRPBF serves as the remote voltage sense return and analog ground reference for the feedback amplifier and internal reference. It must be connected directly to the negative terminal of the output capacitor at the load-not to the PGND plane-to reject PCB trace resistance errors and ensure ±1% regulation accuracy across temperature and load.
Does the LTC3307BMPV#TRPBF require external compensation components?
No-the LTC3307BMPV#TRPBF features fully internal compensation, eliminating the need for external Type II or Type III compensation networks. This simplifies design, reduces component count, and ensures stable operation across its entire 2.25V–5.5V input range and 0.5V–VIN output range without tuning.
LTC3307BMPV#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:
- 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)
LTC3307BMPV#TRPBF FAQ
1.How can I place an order for LTC3307BMPV#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3307BMPV#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 LTC3307BMPV#TRPBF reliable?
The price and inventory of LTC3307BMPV#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3307BMPV#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3307BMPV#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3307BMPV#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3307BMPV#TRPBF?
LTC3307BMPV#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3307BMPV#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 LTC3307BMPV#TRPBF?
For technical support, including LTC3307BMPV#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3307BMPV#TRPBF requirements.
6.How does Aetrix verify that LTC3307BMPV#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3307BMPV#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 LTC3307BMPV#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3307BMPV#TRPBF?
All LTC3307BMPV#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3307BMPV#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 LTC3307BMPV#TRPBF part is unused and in its original packaging.
Return procedure for LTC3307BMPV#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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