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Analog Devices Inc. LTC3313JV#TRPBF
- Part No.:
- LTC3313JV#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 18-PowerTFQFN
- Datasheet:
-
LTC3313JV#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 15A 18LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,116
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Product details
Overview
LTC3313JV#TRPBF from Analog Devices is a monolithic, Silent Switcher® step-down DC/DC converter delivering up to 15A output current from 2.25V–5.5V input, featuring 500mV feedback reference, 35ns minimum on-time, and ±1% VOUT accuracy with remote sense. It operates in automotive-grade junction temperature range (–40°C to 150°C) and targets FPGA, ASIC, and µP core supplies.
For engineers reviewing the LTC3313JV#TRPBF datasheet, LTC3313JV#TRPBF pinout, LTC3313JV#TRPBF application, or LTC3313JV#TRPBF equivalent, key selection criteria include its 15A capability in 3mm × 3mm LQFN, programmable 0.5–5MHz switching frequency, peak current mode control, AEC-Q100 qualification, and multiphase paralleling support for high-power POL systems.
Technical Context
The LTC3313JV#TRPBF employs constant-frequency peak current mode control with internal 500mV reference and 35ns minimum on-time, enabling fast transient response and stable regulation down to 0.5V output. Its dual MOSFET power stage features 3mΩ NMOS and 8mΩ PMOS RDS(ON), supporting 100% duty cycle operation for low-dropout performance.
Silent Switcher® architecture minimizes EMI via symmetric layout and integrated input capacitors, while MODE/SYNC pin enables synchronization to external clocks (0.5–2.25MHz) or multiphase configuration. Thermal shutdown, output overvoltage protection, and die temperature monitoring via SSTT pin provide robust system-level protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.25V to 5.5V - supports wide-input battery and intermediate bus applications including 3.3V and 5V rails. |
| VOUT Range | 0.5V to VIN - enables direct core supply for modern low-voltage processors and FPGAs. |
| Output Current | Up to 15A - delivers high current in compact 3mm × 3mm LQFN without external drivers or controllers. |
| Switching Frequency | Programmable 0.5MHz to 5MHz - balances size (smaller L/C) vs. efficiency and enables EMI shaping. |
| Feedback Accuracy | ±1% with remote sense - maintains tight regulation despite PCB trace resistance between IC and load. |
| Min On-Time | 35ns - allows high VIN/VOUT ratios (e.g., 5V→1.2V at 2MHz) without pulse skipping instability. |
| Junction Temp Range | –40°C to 150°C - qualified per AEC-Q100 Grade 1, suitable for under-hood automotive and industrial environments. |
Pinout & Package
Package: 18-pin 3mm × 3mm × 0.95mm LQFN with exposed thermal pad (Pin 19 = PGND), θJA = 39.6°C/W, requiring soldered thermal connection to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (1) | Enable control input | Precision 400mV threshold with hysteresis; direct tie to VIN enables device; resistor divider enables undervoltage turn-on control. |
| AGND (2) | Remote sense ground | Kelvin connection point for FB divider low-side; rejects up to ±100mV ground offset between IC and load. |
| VIN (3,4,11,12) | Main power input | Four parallel pins reduce IR drop and inductance; must be short-traced and locally bypassed to PGND. |
| PGND (5,10,19) | Power ground return | Three dedicated pins + exposed pad form primary thermal and current return path; requires multiple vias to inner ground plane. |
| SW (6–9) | Switch node outputs | Four paralleled SW pins minimize loop inductance for Silent Switcher EMI performance and high di/dt handling. |
| MODE/SYNC (13) | Frequency control interface | Configures pulse-skipping vs. forced continuous mode or synchronizes to external clock (0.5–2.25MHz). |
| PGOOD (14) | Power status indicator | Open-drain output asserts high when VOUT is within ±3% of target; includes 125µs delay to reject transients. |
| RT (15) | Oscillator programming | Resistor to AGND sets switching frequency from 0.5MHz to 5MHz (e.g., 274kΩ = 2MHz typical). |
| SSTT (16) | Soft-start/track/temp monitor | Charges external capacitor for controlled VOUT ramp; tracks FB during startup; settles to ~4mV/°C for die temp readback. |
| ITH (17) | Loop compensation node | Connects RC network to AGND to stabilize voltage-mode error amplifier; sets crossover frequency and phase margin. |
| FB (18) | Feedback input | Regulated to 500mV; connects to resistive divider from VOUT; accepts phase-lead cap to VOUT for improved transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher® Architecture | Reduces radiated EMI by >20dB vs. conventional buck converters, eliminating need for metal shielding in space-constrained designs. |
| Ultralow Minimum On-Time (35ns) | Enables high-frequency operation at high VIN/VOUT ratios (e.g., 5V→1.2V @ 2MHz) without loss of regulation or forced discontinuous mode. |
| Configurable Multiphase Support | Multiple LTC3313JV#TRPBF units can be synchronized and interleaved via MODE/SYNC to scale output current beyond 15A with reduced input/output ripple. |
| AEC-Q100 Qualified (Grade 1) | Validated for automotive applications including infotainment, ADAS domain controllers, and body electronics with full temperature and reliability testing. |
| Dual-MOSFET Power Stage (3mΩ/8mΩ) | Low RDS(ON) NMOS and PMOS switches minimize conduction losses, achieving >90% efficiency at 15A/1.2V with 3.3V input and 2MHz switching. |
Applications
| FPGA Core Supply | Automotive ADAS Domain Controller |
|---|---|
Use Scenario: Powering Xilinx Versal or Intel Agilex FPGA core rails requiring tightly regulated 0.75–1.2V at up to 12A with fast load transient response. IC Role / Device Role / Timing Role: Primary synchronous buck regulator with remote sense, soft-start tracking, and PGOOD sequencing signal for FPGA configuration. Use Value: ±1% output accuracy ensures reliable logic operation; 35ns min on-time prevents dropout during voltage scaling; SSTT pin enables precise power-up sequencing with other rails. | Use Scenario: Providing 1.8V/10A supply to NVIDIA Orin or TI Jacinto 7 SoC in camera radar fusion ECUs operating in under-hood environments. IC Role / Device Role / Timing Role: AEC-Q100 qualified POL converter with die temperature monitoring and overvoltage protection for functional safety-critical subsystems. Use Value: 150°C junction rating and thermal shutdown prevent failure during thermal overload; PGOOD and fault reporting support ISO 26262 diagnostic coverage. |
| Industrial PLC CPU Module | 5G Baseband Radio Unit (RU) |
Use Scenario: Delivering 1.0V/15A to ARM Cortex-A72-based controller in DIN-rail mounted PLC with wide ambient temperature range (–40°C to +85°C). IC Role / Device Role / Timing Role: High-current, thermally robust step-down regulator with multiphase capability to meet dynamic current demands of real-time OS execution. Use Value: 3mm × 3mm footprint saves board space; paralleling two units scales to 30A; RT-programmable frequency avoids sensitive RF bands. | Use Scenario: Generating 0.85V/12A for Xilinx RFSoC ZU49DR in massive MIMO radio units requiring ultra-low noise and EMI compliance in dense RF layouts. IC Role / Device Role / Timing Role: Silent Switcher® POL converter synchronized to system clock to eliminate beat frequencies and meet EN 55032 Class B emissions limits. Use Value: Integrated EMI reduction eliminates external filters; MODE/SYNC pin enables deterministic jitter-free clock alignment across multiple power rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3695-100 | 100A-rated module with integrated inductor; larger 10.5mm × 11.2mm package; fixed 500kHz–2MHz frequency; no remote sense. | Better for space-constrained designs where board area is less critical than layout simplicity; lacks AEC-Q100 qualification. | Select MPM3695-100 when system-level integration (inductor + controller) outweighs need for remote sensing or automotive qualification. |
| TPS546D24 | 12A max output; 3.5mm × 3.5mm QFN; supports PMBus; 0.6V reference; no Silent Switcher EMI advantage; lower RDS(ON) (1.2mΩ/2.2mΩ). | Preferred for digital power management ecosystems requiring telemetry, margining, and fault logging via PMBus interface. | Select TPS546D24 when telemetry, programmability, and multi-rail coordination via PMBus are required over ultralow EMI or AEC-Q100 compliance. |
Compared with MPM3695-100 and TPS546D24, the LTC3313JV#TRPBF uniquely combines AEC-Q100 qualification, 15A capability in 3mm × 3mm, Silent Switcher EMI performance, and true remote sense accuracy-making it optimal for automotive and high-density industrial POL where precision, reliability, and spectral cleanliness are non-negotiable.
Availability
LTC3313JV#TRPBF is available at Aetrix Electronics and suitable for FPGA core supplies, automotive ADAS domain controllers, and industrial PLC CPU modules requiring stable component supply across extended temperature and long production lifecycles.
Supply support for LTC3313JV#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 industrial, automotive, communications, and healthcare markets.
The LTC3313JV#TRPBF belongs to Analog Devices' Power by Linear™ family of high-efficiency, low-EMI DC/DC regulators designed specifically for demanding point-of-load applications in automotive, computing, and infrastructure systems.
FAQ
What is the maximum output current capability of the LTC3313JV#TRPBF?
The LTC3313JV#TRPBF delivers up to 15A of continuous output current when properly heatsinked on a 4-layer PCB with 2oz copper and thermal vias to internal ground planes. This rating assumes VIN = 3.3V, VOUT = 1.2V, fSW = 2MHz, and ambient temperature ≤85°C. Derating applies at higher ambient or lower input voltages due to increased conduction losses in the 8mΩ PMOS switch.
Does the LTC3313JV#TRPBF support remote voltage sensing, and how is it implemented?
Yes, the LTC3313JV#TRPBF supports true remote voltage sensing using the AGND pin. Connect AGND directly to the negative terminal of the output capacitor at the load, and tie the bottom resistor of the FB divider to AGND-not to the IC's local PGND. This Kelvin connection compensates for up to ±100mV of IR drop between the IC and load, ensuring ±1% output accuracy regardless of PCB trace resistance.
How does the MODE/SYNC pin function in the LTC3313JV#TRPBF?
The MODE/SYNC pin on the LTC3313JV#TRPBF serves three roles: (1) selects pulse-skipping or forced continuous mode, (2) accepts an external clock (0.5–2.25MHz) to synchronize switching, or (3) outputs a clock signal when configured for multiphase operation. During synchronization, the device operates in forced continuous mode and automatically adjusts slope compensation to match the external frequency.
What thermal protection features does the LTC3313JV#TRPBF include?
The LTC3313JV#TRPBF integrates thermal shutdown that disables switching when junction temperature exceeds ~165°C, plus a die temperature monitor accessible via the SSTT pin (4mV/°C). It also includes overcurrent protection with dual thresholds: peak switch current limit (up to 24A) and valley inductor current limit (up to 19A), preventing damage during sustained overload or short-circuit conditions.
Can multiple LTC3313JV#TRPBF devices be paralleled, and what is required for stable operation?
Yes, multiple LTC3313JV#TRPBF devices can be stably paralleled using the MODE/SYNC pin for interleaved multiphase operation. Connect all MODE/SYNC pins together and configure one device as master (RT-connected) while others operate in slave mode (RT open). Ensure matched input/output LC components and identical feedback dividers. PGOOD pins must be wire-OR'd to ensure system-level power-good assertion only when all rails are in regulation.
LTC3313JV#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 18-PowerTFQFN
- 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:
- 15A
- Frequency - Switching:
- 500kHz ~ 5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-LQFN (3x3)
LTC3313JV#TRPBF FAQ
1.How can I place an order for LTC3313JV#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3313JV#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 LTC3313JV#TRPBF reliable?
The price and inventory of LTC3313JV#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3313JV#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3313JV#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3313JV#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3313JV#TRPBF?
LTC3313JV#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3313JV#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 LTC3313JV#TRPBF?
For technical support, including LTC3313JV#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3313JV#TRPBF requirements.
6.How does Aetrix verify that LTC3313JV#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3313JV#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 LTC3313JV#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3313JV#TRPBF?
All LTC3313JV#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3313JV#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 LTC3313JV#TRPBF part is unused and in its original packaging.
Return procedure for LTC3313JV#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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