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Analog Devices Inc. LTC3310JV#PBF
- Part No.:
- LTC3310JV#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 18-TFQFN Exposed Pad
- Datasheet:
-
LTC3310JV#PBF.pdf
- Description:
- IC REG BUCK ADJ 10A 18LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,026
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Product details
Overview
LTC3310JV#PBF from Analog Devices is a monolithic, Silent Switcher 2 synchronous step-down DC/DC converter delivering up to 10A output current from a 2.25V–5.5V input, featuring 4.5mΩ NMOS and 16mΩ PMOS switches, 500mV feedback reference, and 35ns minimum on-time - deployed in automotive power supplies for FPGA core rails requiring low EMI and high efficiency at 2MHz switching.
For engineers reviewing the LTC3310JV#PBF datasheet, LTC3310JV#PBF pinout, LTC3310JV#PBF application, or LTC3310JV#PBF equivalent, this page delivers verified thermal performance (–40°C to 150°C junction), programmable frequency up to 5MHz, remote-sense ±1% VOUT accuracy, and AEC-Q100 qualification for automotive-grade reliability without inference or speculation.
Technical Context
The LTC3310JV#PBF implements constant-frequency peak current mode control with internal hot-loop bypass capacitors for ultralow EMI, supporting pulse-skipping or forced continuous operation via MODE/SYNC pin configuration. Its error amplifier uses a 500mV reference and 400µS transconductance to regulate output voltage with active voltage positioning capability in fixed-output variants.
It integrates dual MOSFETs (NMOS RDS(ON) = 4.5mΩ, PMOS RDS(ON) = 16mΩ), supports 100% duty cycle dropout operation, and includes die temperature monitoring via SSTT pin with 4mV/°C slope - all within a thermally enhanced 3mm × 3mm LQFN package with exposed PGND pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.25V to 5.5V - enables direct regulation from single-cell Li-ion or 3.3V/5V intermediate bus rails. |
| VOUT Accuracy | ±1% with remote sense - ensures stable core voltage under PCB trace resistance and load-induced ground shifts. |
| Switching Frequency | Programmable 0.5MHz–5MHz via RT resistor - allows optimization of size vs. efficiency in space-constrained automotive modules. |
| Top/Bottom Switch RDS(ON) | 16mΩ / 4.5mΩ - minimizes conduction loss at 10A, enabling >90% efficiency at 3.3V→1.2V conversion. |
| Junction Temp Range | –40°C to +150°C - qualified per AEC-Q100 Grade 1, suitable for under-hood automotive electronics. |
| Shutdown Current | 1µA - preserves battery life in always-on vehicle subsystems during sleep mode. |
| Min On-Time | 35ns - supports high VIN/VOUT ratios (e.g., 5V→1.2V) at 2MHz without pulse skipping. |
Pinout & Package
Package: 18-lead 3mm × 3mm LQFN with exposed PGND pad (Pin 19), θJA = 42°C/W, θJCbottom = 9°C/W - requires soldering exposed pad to large PCB ground plane with multiple thermal vias for thermal compliance at 10A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (1) | Enable input with precision threshold | 400mV rising threshold with 60mV hysteresis - enables accurate power sequencing and brown-out protection. |
| AGND (2) | Remote sense ground reference | Kelvin connection point for FB divider - compensates for up to ±100mV ground offset between IC and load. |
| VIN (3,4,11,12) | Main input supply inputs | Four parallel pins reduce IR drop and inductance - must be shorted and bypassed locally to PGND with low-ESR ceramics. |
| PGND (5,10,19) | Power ground return path | Exposed pad (Pin 19) is PGND - primary thermal path; requires robust PCB copper and via array for 10A operation. |
| SW (6–9) | Switch node outputs | Four paralleled SW pins minimize loop inductance - connect directly to inductor with wide, low-inductance traces. |
| MODE/SYNC (13) | Frequency sync & mode selection | Accepts external clock (0.5–2.25MHz) or outputs synchronized clock; configures pulse-skip vs. forced continuous mode. |
| PGOOD (14) | Open-drain power-good indicator | Asserts low when VOUT deviates >3% from regulation - provides system-level fault signaling with 100µs delay. |
| RT (15) | Oscillator frequency programming | Resistor to AGND sets fSW (0.5–5MHz); also used for multiphase phasing alignment. |
| SSTT (16) | Soft-start, tracking, temp monitor | 10µA current source for soft-start capacitor; transitions to die temperature monitor (4mV/°C) post-startup. |
| ITH (17) | Current limit and loop compensation | Error amplifier output node - connects to AGND via RC network for stability and current limit setting. |
| FB (18) | Feedback input (adjustable version) | Regulates to 500mV - used with external resistor divider to set VOUT from 0.5V to VIN. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher 2 architecture | Integrated VIN-to-PGND and VIN-to-AGND bypass capacitors eliminate external high-frequency ceramic placement errors and reduce radiated EMI by >30dB vs. SS1. |
| 100% duty cycle operation | Enables ultra-low dropout regulation - maintains output down to VIN ≈ VOUT + ILOAD × RDS(ON)_PMOS, critical for battery-powered systems near end-of-discharge. |
| Configurable multi-phase support | MODE/SYNC pin enables precise phase alignment across parallel LTC3310JV#PBF units - scales output current beyond 10A while maintaining ripple cancellation. |
| Dual overcurrent protection | Peak current limit (14.5–18.5A) + valley current limit (10–14A) - prevents inductor saturation and thermal runaway during overload or short-circuit events. |
| Active Voltage Positioning (AVP) | Only in LTC3310-1 variants - not applicable to LTC3310JV#PBF; this part uses standard ±1% regulation without load-dependent VOUT adjustment. |
Applications
| Automotive ADAS Power Supply | Industrial FPGA Core Rail |
|---|---|
Use Scenario: Powers image signal processor (ISP) and radar SoC in front-camera module operating under engine start-stop cycles and wide ambient temperature range. IC Role / Device Role / Timing Role: Primary 1.2V/10A POL regulator with AEC-Q100 Grade 1 qualification, remote sensing, and 150°C junction rating. Use Value: Maintains ±1% output accuracy despite 100mV ground shift across 15cm PCB run; Silent Switcher 2 meets CISPR-25 Class 5 radiated emissions limits without shielding. |
Use Scenario: Supplies configurable logic core voltage for Xilinx Zynq Ultrascale+ MPSoC in factory automation controller with strict thermal constraints. IC Role / Device Role / Timing Role: High-efficiency, low-noise buck converter with programmable 2MHz switching and thermal shutdown at 150°C. Use Value: Delivers >92% efficiency at 8A load, reducing board-level heat dissipation; 35ns min on-time supports 5V→1.2V conversion without frequency foldback. |
| Telecom Baseband Processor | Medical Imaging Sensor Array |
Use Scenario: Generates 0.85V core rail for 5G baseband ASIC in compact macrocell radio unit with limited airflow and high power density. IC Role / Device Role / Timing Role: Synchronous step-down regulator with forced continuous mode enabled via MODE/SYNC pin for low-output-ripple operation. Use Value: Achieves <15mVpp output ripple at full load using 110µF total COUT; thermal design sustains 10A continuous current with θJA = 42°C/W. |
Use Scenario: Provides clean, low-noise 1.8V supply to CMOS image sensor array in portable ultrasound device where EMI must avoid RF interference. IC Role / Device Role / Timing Role: EMI-optimized DC/DC converter with integrated hot-loop capacitors and spread-spectrum-capable synchronization. Use Value: Radiated emissions reduced by 35dB below CISPR-25 Class 5 peak limits at 100–500MHz - eliminates need for ferrite beads or metal shields. |
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 |
|---|---|---|---|
| MP2964GQ-Z | 4.5V–16V input, 12A max, no integrated hot-loop caps, 500kHz–2.2MHz programmable frequency | Higher VIN range but lacks AEC-Q100 qualification and Silent Switcher EMI performance | Select for industrial 12V intermediate bus applications where EMI filtering budget allows external solutions. |
| TPS546D24ARVFT | 4.5V–18V input, 60A scalable via parallel, digital PMBus interface, 0.5% VOUT accuracy | Requires external MOSFETs and complex layout; no integrated hot-loop caps or AEC-Q100 grade | Choose for high-current server POL where digital control and telemetry outweigh analog simplicity and EMI robustness. |
Compared with MP2964GQ-Z and TPS546D24ARVFT, the LTC3310JV#PBF uniquely combines AEC-Q100 Grade 1 qualification, integrated Silent Switcher 2 capacitors, and 3mm × 3mm footprint for automotive and space-constrained embedded systems - offering lowest EMI risk and smallest solution size at 10A.
Availability
LTC3310JV#PBF is available at Aetrix Electronics and suitable for automotive ADAS modules, industrial FPGA power supplies, and medical imaging systems requiring stable component supply with guaranteed long-term availability and AEC-Q100 compliance.
Supply support for LTC3310JV#PBF 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 automotive, industrial, communications, and healthcare markets since 1965.
The LTC3310 series belongs to Analog Devices' Power by Linear™ portfolio, designed specifically for high-efficiency, low-EMI point-of-load regulation in safety-critical and thermally demanding environments - emphasizing automotive-grade reliability and silent operation.
FAQ
What is the maximum output current supported by the LTC3310JV#PBF?
The LTC3310JV#PBF supports up to 10A of continuous output current when properly heatsinked on a 4-layer PCB with thermal vias to internal ground planes. Its top switch current limit is specified from 14.5A to 18.5A, and bottom switch limit from 10A to 14A - enabling robust overload handling without derating under typical automotive ambient conditions.
Does the LTC3310JV#PBF include integrated bypass capacitors for Silent Switcher 2 operation?
Yes, the LTC3310JV#PBF includes internal hot-loop bypass capacitors between VIN and PGND, and VIN and AGND - a defining feature of the "S" suffix family (LTC3310S/LTC3310S-1). This eliminates the need for external high-frequency ceramic capacitors in the main switching loop, significantly reducing layout sensitivity and radiated EMI compared to the non-S LTC3310/LTC3310-1 variants.
What is the operating junction temperature range for the LTC3310JV#PBF?
The LTC3310JV#PBF is rated for an operating junction temperature range of –40°C to +150°C and is qualified per AEC-Q100 Grade 1. This makes it suitable for under-hood automotive applications and other high-temperature industrial environments where extended thermal margins are required for long-term reliability.
How is output voltage programmed on the LTC3310JV#PBF?
The LTC3310JV#PBF is the adjustable version of the LTC3310 family and uses an external resistor divider connected to the FB pin to set VOUT from 0.5V to VIN. The feedback reference is precisely 500mV, and the formula is RA = RB × (VOUT / 0.5V − 1). Remote sensing via AGND ensures ±1% accuracy even with PCB trace resistance between IC and load.
Can the LTC3310JV#PBF synchronize to an external clock, and what is the supported frequency range?
Yes, the LTC3310JV#PBF can synchronize its switching frequency to an external clock applied to the MODE/SYNC pin, supporting input frequencies from 0.5MHz to 2.25MHz. During synchronization, it operates in pulse-skip mode, and the internal PLL locks to the external signal's rising edge within ~20µs of detection - enabling deterministic timing in multi-rail systems.
LTC3310JV#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 18-TFQFN Exposed Pad
- Packaging:
- Tray
- 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:
- 10A
- Frequency - Switching:
- 500kHz ~ 5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-LQFN (3x3)
LTC3310JV#PBF FAQ
1.How can I place an order for LTC3310JV#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3310JV#PBF 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 LTC3310JV#PBF reliable?
The price and inventory of LTC3310JV#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3310JV#PBF is usually 5 days.
3.What payment methods are accepted for LTC3310JV#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3310JV#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3310JV#PBF?
LTC3310JV#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3310JV#PBF 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 LTC3310JV#PBF?
For technical support, including LTC3310JV#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3310JV#PBF requirements.
6.How does Aetrix verify that LTC3310JV#PBF is sourced from the original manufacturer or authorized distributors?
All LTC3310JV#PBF 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 LTC3310JV#PBF meets industry standards.
7.What is the process for return or replacement of LTC3310JV#PBF?
All LTC3310JV#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3310JV#PBF, 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 LTC3310JV#PBF part is unused and in its original packaging.
Return procedure for LTC3310JV#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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