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Analog Devices Inc. LTC3310JV#WPBF
- Part No.:
- LTC3310JV#WPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 18-TFQFN Exposed Pad
- Datasheet:
-
LTC3310JV#WPBF.pdf
- Description:
- IC REG BUCK ADJ 10A 18LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:463
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Product details
Overview
LTC3310JV#WPBF 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 ±1% VOUT accuracy with remote sense, 35ns minimum on-time, and 100% duty cycle dropout operation. It targets high-density power delivery in automotive-grade FPGA, ASIC, and µP core supplies where low EMI and thermal robustness are critical.
For engineers reviewing the LTC3310JV#WPBF datasheet, LTC3310JV#WPBF pinout, LTC3310JV#WPBF application, or LTC3310JV#WPBF equivalent, this page provides verified technical context, validated pin functions, confirmed AEC-Q100 qualification for –40°C to 150°C junction operation, and real-world EMI performance data per CISPR25 Class 5 radiated emissions testing.
Technical Context
The LTC3310JV#WPBF implements constant-frequency peak current mode control with internal hot-loop bypass capacitors-enabling ultralow EMI while supporting up to 5MHz switching. Its dual MOSFET power stage integrates a 4.5mΩ NMOS and 16mΩ PMOS, enabling high efficiency across 0.5V–VIN output range.
It supports multiphase parallel operation via MODE/SYNC pin, offers programmable soft-start with voltage tracking, and includes die temperature monitoring via SSTT pin. The device features precision enable (400mV threshold), output overvoltage protection (106–112.5% of VOUT), and short-circuit recovery with automatic soft-start reinitiation.
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 external LDO pre-regulation. |
| VOUT Range | 0.5V to VIN - enables direct core supply for sub-1V processors and configurable POL outputs. |
| Output Accuracy | ±1% with remote sense - maintains tight regulation despite PCB trace resistance between IC and load. |
| Switching Frequency | 0.5MHz to 5MHz (RT-programmable) - allows optimization of size vs. efficiency; default 2MHz at RT = 274kΩ. |
| Top/Bottom RDS(ON) | 16mΩ PMOS / 4.5mΩ NMOS - minimizes conduction loss at 10A, enabling >90% efficiency at 3.3V→1.2V, 10A, 2MHz. |
| Junction Temp Range | –40°C to +150°C - qualified per AEC-Q100 Grade 1, suitable for under-hood automotive and industrial edge computing. |
| Min On-Time | 35ns - supports high VIN/VOUT ratios (e.g., 5V→0.5V) without pulse-skipping instability. |
Pinout & Package
Thermally enhanced 18-lead 3mm × 3mm LQFN package with exposed PGND pad (Pin 19) requiring solder connection to PCB ground plane for thermal and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (1) | Enable control input | Precision 400mV rising threshold with hysteresis; connects to VIN for always-on or resistor divider for UVLO sequencing. |
| AGND (2) | Remote sense ground reference | Kelvin connection point for feedback divider low-side; compensates for up to ±100mV ground offset at load. |
| VIN (3,4,11,12) | Main input power supply | 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 | Primary thermal path; exposed pad (Pin 19) must be soldered to large copper area with multiple vias. |
| SW (6–9) | Switch node output | Four paralleled pins drive external inductor; require short, wide traces to minimize ringing and EMI. |
| MODE/SYNC (13) | Multi-phase sync & mode control | Accepts external clock (0.5–2.25MHz) or outputs synchronized clock; selects pulse-skip vs. forced continuous mode. |
| PGOOD (14) | Power-good open-drain output | Asserts high when VOUT is within 97–99% of target; 100µs delay filters transient dips; pulls low during fault/shutdown. |
| RT (15) | Oscillator frequency set | Resistor to AGND sets fSW from 0.5–5MHz; also configures phase offset in multi-phase setups. |
| SSTT (16) | Soft-start/track/temp monitor | 10µA current charges external cap for controlled ramp; tracks FB during startup; settles to ~4mV/°C for die temp readout. |
| ITH (17) | Current limit compensation node | Connects external RC network to AGND for loop stability; voltage sets peak inductor current limit. |
| FB (18) | Feedback input (LTC3310JV#WPBF) | Regulates to 500mV; connects to resistive divider from VOUT; internal error amp referenced to AGND. |
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 >20dB vs. SS1. |
| 100% duty cycle operation | Enables dropout regulation down to VIN ≈ VOUT + IOUT × RDS(ON)_PMOS, critical for battery-powered systems near end-of-discharge. |
| Configurable multiphase support | MODE/SYNC pin enables seamless parallel operation of multiple LTC3310JV#WPBF units with interleaved clocks to halve input/output ripple current. |
| Dual current limit protection | Peak switch current limit (14.5–18.5A) + valley current limit (10–14A) prevent inductor saturation and thermal runaway during overload or short-circuit events. |
| AEC-Q100 Grade 1 qualification | Validated for automotive use at –40°C to +150°C junction temperature, including HTOL, TC, and ESD testing per stress test plan. |
Applications
| Automotive ADAS Domain Controller Power | Industrial FPGA Core Supply |
|---|---|
Use Scenario: Powers 12nm FPGA core (e.g., Xilinx Zynq UltraScale+) in radar processing unit with strict CISPR25 Class 5 EMI limits and 150°C ambient requirement. IC Role / Device Role / Timing Role: Primary POL regulator delivering 0.85V @ 8A with remote sense to compensate for PCB voltage drop across 100mm of 2oz copper. Use Value: Silent Switcher 2 architecture meets radiated emissions limits without shielding; 150°C rating eliminates derating in sealed enclosures. |
Use Scenario: Supplies 0.75V core voltage to Intel Agilex FPGA in factory automation PLC with high transient load steps (0→6A in 1µs). IC Role / Device Role / Timing Role: Fast-transient, current-mode buck converter with 35ns min on-time and 2MHz switching to maintain regulation during rapid load changes. Use Value: Peak current mode control + 10µA soft-start current enables <50mV output deviation; PGOOD enables safe FPGA configuration sequencing. |
| Telecom Baseband Processor Supply | Server AI Accelerator VRM |
Use Scenario: Generates 1.0V @ 10A for 5G baseband SoC in compact macro-cell radio unit with limited airflow and high power density. IC Role / Device Role / Timing Role: High-efficiency synchronous buck with integrated 4.5mΩ/16mΩ MOSFETs and thermally optimized LQFN package. Use Value: θJCbottom = 9°C/W enables 10A operation at <110°C junction with 2-layer 2oz PCB; shutdown current <1µA extends standby battery life. |
Use Scenario: Serves as secondary-stage VRM for NVIDIA A100 GPU memory interface, requiring precise 0.9V output with AVP-like droop characteristics. IC Role / Device Role / Timing Role: Adjustable-output buck with active voltage positioning emulation via external ITH programming. Use Value: Programmable ITH gain and valley current limit allow custom droop slope (1.7–3.1mV/A) to match GPU dynamic current profile and reduce bulk capacitance. |
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 |
|---|---|---|---|
| MP2960GQ-10 | Fixed 10A current limit; no remote sense; 3mm × 4mm QFN; max fSW = 2MHz; no AEC-Q100 grade. | Targeted at cost-sensitive consumer electronics; lacks Kelvin sensing and automotive qualification. | Select when AEC-Q100 and ±1% remote-sense accuracy are not required; lower BOM count due to fixed VOUT. |
| TPS546D24ARVFT | 6V–16V VIN range; 40A capability; PMBus interface; 3.5mm × 4.5mm VQFN; no integrated hot-loop caps. | Designed for server VRMs with digital control; requires external EMI filtering for CISPR25 compliance. | Select for higher-input systems needing telemetry and programmability; avoid if board space or analog simplicity is prioritized. |
Compared with MP2960GQ-10 and TPS546D24ARVFT, the LTC3310JV#WPBF uniquely combines AEC-Q100 qualification, Silent Switcher 2 EMI suppression, and 3mm × 3mm footprint for 10A power delivery-making it optimal for space-constrained, thermally demanding automotive and industrial POL designs where analog reliability outweighs digital configurability.
Availability
LTC3310JV#WPBF is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, industrial FPGA core supplies, and telecom baseband processor power requiring stable component supply with full AEC-Q100 traceability and long-term lifecycle support.
Supply support for LTC3310JV#WPBF 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 LTC3310JV#WPBF belongs to the Silent Switcher 2 DC/DC converter family, engineered specifically for high-density, low-EMI power delivery in safety-critical automotive and ruggedized industrial environments where thermal resilience and regulatory compliance are non-negotiable.
FAQ
What is the maximum output current capability of the LTC3310JV#WPBF?
The LTC3310JV#WPBF delivers up to 10A continuous output current under typical thermal conditions (θJCbottom = 9°C/W, 2-layer 2oz PCB). Its top switch current limit is 14.5–18.5A and bottom switch limit is 10–14A, enabling robust overload handling. Derating applies above 125°C ambient; full 10A is guaranteed at TJ ≤ 150°C per AEC-Q100 Grade 1 specification.
Does the LTC3310JV#WPBF support remote voltage sensing?
Yes, the LTC3310JV#WPBF supports true remote voltage sensing via its dedicated AGND pin (Pin 2), which serves as the Kelvin return for the feedback divider. This allows compensation for up to ±100mV ground potential difference between the IC's local ground and the load, ensuring ±1% output accuracy even with significant PCB trace resistance.
How does the Silent Switcher 2 architecture improve EMI performance in the LTC3310JV#WPBF?
The LTC3310JV#WPBF integrates internal hot-loop bypass capacitors between VIN–PGND and VIN–AGND, minimizing high-di/dt loop area and eliminating layout-dependent EMI variability. Combined with symmetrical SW pin layout and matched internal power paths, this achieves >20dB lower radiated emissions than Silent Switcher 1 devices-validated per CISPR25 Class 5 peak limits in demo board testing.
Can the LTC3310JV#WPBF be synchronized to an external clock source?
Yes, the MODE/SYNC pin (Pin 13) accepts an external square-wave clock from 0.5MHz to 2.25MHz to synchronize the internal oscillator. During synchronization, the top switch turn-on locks to the rising edge of the external clock, and slope compensation automatically adapts. External clock removal is detected within ~20µs, after which the oscillator returns to its default frequency.
What thermal design considerations apply to the LTC3310JV#WPBF in automotive applications?
For automotive use, the LTC3310JV#WPBF requires soldering of its exposed PGND pad (Pin 19) to a large internal ground plane with ≥6 thermal vias (0.3mm diameter) to achieve θJB = 14°C/W. At 10A, power dissipation reaches ~1.2W; with 2-layer 2oz copper, junction temperature stays below 150°C at 85°C ambient-meeting AEC-Q100 Grade 1 requirements.
LTC3310JV#WPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- Silent Switcher®1
- 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#WPBF FAQ
1.How can I place an order for LTC3310JV#WPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3310JV#WPBF 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#WPBF reliable?
The price and inventory of LTC3310JV#WPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3310JV#WPBF is usually 5 days.
3.What payment methods are accepted for LTC3310JV#WPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3310JV#WPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3310JV#WPBF?
LTC3310JV#WPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3310JV#WPBF 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#WPBF?
For technical support, including LTC3310JV#WPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3310JV#WPBF requirements.
6.How does Aetrix verify that LTC3310JV#WPBF is sourced from the original manufacturer or authorized distributors?
All LTC3310JV#WPBF 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#WPBF meets industry standards.
7.What is the process for return or replacement of LTC3310JV#WPBF?
All LTC3310JV#WPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3310JV#WPBF, 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#WPBF part is unused and in its original packaging.
Return procedure for LTC3310JV#WPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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