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Analog Devices Inc. LTC3307AHV#TRMPBF
- Part No.:
- LTC3307AHV#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-VFQFN Exposed Pad
- Datasheet:
-
LTC3307AHV#TRMPBF.pdf
- Description:
- IC REG BUCK ADJ 3A 12LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,193
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Product details
Overview
LTC3307AHV#TRMPBF 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 automotive-grade (–40°C to +150°C) 2mm × 2mm LQFN packaging.
For engineers reviewing the LTC3307AHV#TRMPBF datasheet, LTC3307AHV#TRMPBF pinout, LTC3307AHV#TRMPBF application, or LTC3307AHV#TRMPBF equivalent, key selection criteria include its 22ns minimum on-time, programmable 1–3MHz switching frequency, forced continuous/pulse-skipping/Burst Mode operation, and AEC-Q100 qualification for high-reliability power delivery in constrained spaces.
Technical Context
The LTC3307AHV#TRMPBF uses peak current mode control with internal compensation and a 0.5V reference, enabling stable regulation across wide VIN–VOUT differentials. Its integrated 8mΩ NMOS and 31mΩ PMOS switches support high efficiency at light and full load, while the 22ns minimum on-time enables high step-down ratios at 2MHz switching.
Operation modes are selected via MODE/SYNC pin voltage: floating for forced continuous (fixed-frequency, low-ripple), grounded for pulse-skipping (low-noise), or tied to VIN for Burst Mode (40µA IQ, ideal for battery systems). Clock synchronization (1–3MHz) and RT-resistor programmability provide precise timing control without external components.
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 FPGAs, ASICs, and µPs requiring sub-1V rails. |
| Output Accuracy | ±1% over temperature - ensures tight regulation under thermal stress in automotive under-hood environments. |
| Switching Frequency | 1MHz to 3MHz (RT-programmable or SYNC) - allows small external inductors (e.g., 470nH) and capacitors for space-constrained POL designs. |
| Min On-Time | 22ns - enables 0.5V output from 3.3V input at 2MHz, critical for high-ratio step-down without frequency reduction. |
| Efficiency IQ | 40µA in Burst Mode sleep - extends battery life in always-on IoT and telematics modules. |
| Thermal Rating | –40°C to +150°C junction - qualified per AEC-Q100 Grade H, suitable for engine control units and ADAS power stages. |
Pinout & Package
Package: 12-lead 2mm × 2mm × 0.74mm LQFN with exposed PGND pad (Pin 13) for low thermal resistance (θJA = 51°C/W).
| 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 to reject PCB IR drop. |
| EN (Pin 2) | Enable control input | 400mV precision threshold with hysteresis; supports accurate power sequencing via resistor divider from upstream rail. |
| VIN (Pins 3, 8) | Main power input | Dual high-current paths reduce trace inductance; requires local 1µF 0201 ceramic bypass to AGND and PGND. |
| PGND (Pins 4, 7, Exposed Pad 13) | Power ground return | Main thermal and electrical path for bottom switch; exposed pad must be soldered to large PCB ground plane with ≥6 vias. |
| SW (Pins 5, 6) | Switch node output | Connects to inductor; short, wide copper pour minimizes ringing and EMI in Silent Switcher layout. |
| MODE/SYNC (Pin 9) | Mode selection / clock sync | Configures operation mode (Burst/FC/Pulse-skip) or accepts 1–3MHz external clock for system-wide timing alignment. |
| RT (Pin 10) | Frequency set resistor | Resistor to AGND sets switching frequency; open or tied to VIN selects default 2MHz oscillator. |
| PGOOD (Pin 11) | Open-drain power-good flag | Signals valid VOUT (97–99% of target) after 120µs delay; pulled low during UVLO, shutdown, or thermal fault. |
| FB (Pin 12) | Feedback input | Regulates to 0.5V reference; connects to resistor divider between VOUT and AGND; phase-lead cap optional for transient optimization. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher® architecture | Ultralow EMI emissions via balanced SW node layout and integrated input caps - meets CISPR 22 Class B without shielding. |
| 100% duty cycle operation | Enables dropout regulation down to VIN – VDS(ON) - maintains output during brownout when input drops near VOUT. |
| Inductor saturation tolerance | Safe operation even if inductor saturates during overload - prevents catastrophic failure in transient fault conditions. |
| Internal compensation | Reduces BOM count and layout sensitivity - eliminates need for external compensation network in standard applications. |
| Overvoltage protection | Shuts off top switch if FB exceeds 110% VOUT - protects downstream logic from destructive overvoltage events. |
Applications
| Automotive ADAS Camera Module | FPGA Core Supply (POL) |
|---|---|
Use Scenario: Powering image sensor and SerDes in compact rear-view camera housing exposed to under-hood temperatures. IC Role / Device Role / Timing Role: Primary 1.2V/3A core regulator with AEC-Q100 H-grade qualification and 150°C operation. Use Value: Silent Switcher EMI suppression avoids interference with 5GHz wireless video transmission; 22ns min on-time enables clean 1.2V from 3.3V domain. |
Use Scenario: Point-of-load regulation for Xilinx Artix-7 FPGA core rail in industrial control gateway. IC Role / Device Role / Timing Role: High-bandwidth, low-noise buck delivering fast transient response to dynamic logic loads. Use Value: Forced continuous mode provides <50mV ripple at 3A; 2MHz switching allows tiny 470nH inductor and 10µF ceramic output cap. |
| Battery-Powered Telematics Unit | Optical Networking Line Card |
Use Scenario: Always-on GNSS + LTE module requiring ultra-low quiescent current during sleep cycles. IC Role / Device Role / Timing Role: Main system regulator operating in Burst Mode with 40µA IQ and fast wake-up from sleep. Use Value: Extends coin-cell or supercap backup runtime by >3× vs. conventional buck; PGOOD enables safe firmware boot sequencing. |
Use Scenario: Compact 5G fronthaul card needing multiple isolated 1.8V/1.2V rails in tight thermal envelope. IC Role / Device Role / Timing Role: High-efficiency, thermally robust POL converter synchronized to system clock for jitter-sensitive SerDes. Use Value: SYNC pin locks switching to 2.5GHz reference clock, eliminating beat frequencies; LQFN package enables 1.2W dissipation at 85°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6286418RTER | 3A, 2.7–6V input, 1.8V fixed output; no RT programming; 1.8MHz fixed freq; QFN-11 package. | Fixed-output only; lacks Burst Mode and Silent Switcher EMI performance; not AEC-Q100 qualified. | Select when board space is tighter and only 1.8V output is needed; avoid for automotive or noise-sensitive analog systems. |
| MAX20404ATCA/VY+ | 4A, 2.5–5.5V input, 0.5–5.5V adjustable; 2.2MHz; integrated inductor option; WLP-16 package. | Higher current but larger footprint; no AEC-Q100 grade; lower efficiency at light load (no Burst Mode). | Prefer for prototyping with integrated inductor; choose LTC3307AHV#TRMPBF instead for production automotive use or EMI-critical layouts. |
Compared with TPS6286418RTER and MAX20404ATCA/VY+, the LTC3307AHV#TRMPBF uniquely combines AEC-Q100 H-grade reliability, Silent Switcher EMI suppression, 22ns min on-time for high-ratio conversion, and 40µA Burst Mode IQ - making it the only choice for thermally demanding, safety-critical, or RF-cohabitant automotive and optical networking applications.
Availability
LTC3307AHV#TRMPBF is available at Aetrix Electronics and suitable for automotive ADAS, FPGA core supplies, battery-powered telematics, and optical networking line cards requiring stable component supply with guaranteed long-term availability and automotive-grade traceability.
Supply support for LTC3307AHV#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 LTC3307A product line delivers ultra-small, high-efficiency, low-EMI synchronous buck converters for space- and noise-constrained point-of-load applications in automotive, telecom, and computing infrastructure.
FAQ
What is the maximum junction temperature rating for LTC3307AHV#TRMPBF?
The LTC3307AHV#TRMPBF is rated for operation up to +150°C junction temperature and is qualified per AEC-Q100 Grade H. This makes LTC3307AHV#TRMPBF suitable for under-hood automotive applications where ambient temperatures exceed 105°C and thermal derating must be minimized.
Does LTC3307AHV#TRMPBF support synchronization to an external clock?
Yes, LTC3307AHV#TRMPBF supports clock synchronization via the MODE/SYNC pin, accepting 1MHz to 3MHz square-wave inputs. During synchronization, LTC3307AHV#TRMPBF operates in forced continuous mode with automatically adapted slope compensation - essential for noise-sensitive systems like SerDes or ADC clocks.
What is the minimum output voltage achievable with LTC3307AHV#TRMPBF?
LTC3307AHV#TRMPBF regulates output voltages as low as 0.5V, based on its 0.5V internal feedback reference and ±1% accuracy. This enables direct core supply for modern low-voltage FPGAs and microprocessors without external amplification or level-shifting circuitry.
How does LTC3307AHV#TRMPBF achieve ultralow EMI performance?
LTC3307AHV#TRMPBF achieves ultralow EMI through Silent Switcher® architecture: symmetrical, opposing SW node layout cancels magnetic fields, and integrated input capacitors minimize high-di/dt loop area. This allows LTC3307AHV#TRMPBF to meet CISPR 22 Class B without ferrite beads or metal shields in typical layouts.
Is LTC3307AHV#TRMPBF pin-compatible with other members of the LTC3307 family?
Yes, LTC3307AHV#TRMPBF shares identical pinout and footprint with all LQFN-packaged LTC3307A variants (e.g., LTC3307AEV#TRMPBF, LTC3307AJV#TRMPBF), enabling drop-in replacement across temperature grades without PCB redesign - provided thermal and reliability requirements align with the chosen grade.
LTC3307AHV#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:
- 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:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-LQFN (2x2)
LTC3307AHV#TRMPBF FAQ
1.How can I place an order for LTC3307AHV#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3307AHV#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 LTC3307AHV#TRMPBF reliable?
The price and inventory of LTC3307AHV#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3307AHV#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3307AHV#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3307AHV#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3307AHV#TRMPBF?
LTC3307AHV#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3307AHV#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 LTC3307AHV#TRMPBF?
For technical support, including LTC3307AHV#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3307AHV#TRMPBF requirements.
6.How does Aetrix verify that LTC3307AHV#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3307AHV#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 LTC3307AHV#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3307AHV#TRMPBF?
All LTC3307AHV#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3307AHV#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 LTC3307AHV#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3307AHV#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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