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Analog Devices Inc. LTC3310JV#WTRPBF
- Part No.:
- LTC3310JV#WTRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 18-TFQFN Exposed Pad
- Datasheet:
-
LTC3310JV#WTRPBF.pdf
- Description:
- IC REG BUCK ADJ 10A 18LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,052
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Product details
Overview
LTC3310JV#WTRPBF 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 AEC-Q100 qualification for automotive applications. It operates in pulse-skip or forced continuous mode and supports clock synchronization up to 5MHz.
For engineers reviewing the LTC3310JV#WTRPBF datasheet, LTC3310JV#WTRPBF pinout, LTC3310JV#WTRPBF application, or LTC3310JV#WTRPBF equivalent, key selection criteria include its 150°C junction temperature rating, integrated hot-loop bypass capacitors for ultralow EMI, 4.5mΩ NMOS/16mΩ PMOS RDS(ON), programmable switching frequency, and support for multiphase paralleling in high-power POL systems.
Technical Context
The LTC3310JV#WTRPBF employs constant-frequency peak current mode control with internal 500mV reference and error amplifier transconductance of 400µS (LTC3310S) or 800µS (LTC3310S-1). Its Silent Switcher 2 architecture integrates VIN-to-PGND and VIN-to-AGND bypass capacitors, enabling clean 2MHz–5MHz operation with minimal external filtering.
It features dual overcurrent protection: top-switch peak limit (14.5–18.5A) and bottom-switch valley limit (10–14A), plus output overvoltage protection (106–112.5% of VOUT), power good monitoring with 100µs delay, and die temperature sensing via SSTT pin (4mV/°C slope).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.25V to 5.5V - supports wide-input battery and intermediate bus rails including 3.3V and 5V systems. |
| VOUT Accuracy | ±1% with remote sense - ensures stable core voltage under load-induced ground offsets up to ±100mV. |
| Max Output Current | 10A - delivers high current in compact 3mm × 3mm LQFN without external current-sense resistors. |
| Switching Frequency | 0.5MHz to 5MHz (RT-programmable) - enables optimization of size vs. efficiency; default 2MHz at RT = 274kΩ. |
| Junction Temp Range | –40°C to +150°C - qualified per AEC-Q100 Grade 1, suitable for under-hood automotive and industrial environments. |
| Top/Bottom RDS(ON) | 16mΩ / 4.5mΩ - low conduction loss improves full-load efficiency and thermal performance at 10A. |
| Shutdown Current | 1µA - enables ultra-low power state for battery-backed or always-on subsystems. |
Pinout & Package
Package: 18-lead 3mm × 3mm LQFN with exposed PGND pad (Pin 19), θJCbottom = 9°C/W, thermally enhanced for 10A operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (1) | Enable input with precision threshold | 400mV rising threshold with 60mV hysteresis; direct VIN tie disables shutdown; enables controlled power sequencing. |
| AGND (2) | Remote sense ground reference | Kelvin connection point for FB divider low-side; rejects PCB ground bounce up to ±100mV for accurate regulation at load. |
| VIN (3,4,11,12) | Main input power supply | Four parallel pins reduce IR drop and inductance; must be shorted and locally bypassed to PGND with low-ESR ceramics. |
| PGND (5,10,19) | Power ground return path | Three dedicated pins + exposed pad form primary thermal and current return path; requires large copper pour and multiple vias. |
| SW (6–9) | Switch node outputs | Four paralleled SW pins minimize loop inductance; connect directly to inductor with wide, short traces to suppress ringing. |
| MODE/SYNC (13) | Mode control & clock I/O | Configures pulse-skip/forced-continuous mode or synchronizes to external clock (0.5–2.25MHz); also outputs clock when master. |
| PGOOD (14) | Open-drain power-good indicator | Asserts high when VOUT is within 97–99% of target; 100µs delay filters transients; pulls low during fault or shutdown. |
| RT (15) | Oscillator frequency set | Resistor to AGND programs fSW from 0.5–5MHz; also sets phase offset in multiphase configurations. |
| SSTT (16) | Soft-start, tracking, temp monitor | 10µA current charges external cap for controlled ramp; tracks FB during startup; settles to 4mV/°C voltage post-startup. |
| ITH (17) | Current limit and loop compensation | Compensation node referenced to AGND; voltage sets peak inductor current; connects to RC network for stability tuning. |
| FB (18) | Feedback input (LTC3310JV) | Regulates to 500mV; connects to resistor divider from VOUT; supports remote sensing via AGND-referenced divider. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher 2 Architecture | Integrated VIN–PGND and VIN–AGND bypass capacitors reduce EMI emissions without external ferrite beads or complex layout. |
| 100% Duty Cycle Operation | Enables dropout regulation down to VIN ≈ VOUT; maintains regulation even as input sags near output voltage in battery systems. |
| Configurable Multiphase Support | MODE/SYNC pin enables precise phase alignment across multiple LTC3310JV#WTRPBF units for >10A scalable power delivery. |
| Dual Overcurrent Protection | Peak (14.5–18.5A) and valley (10–14A) current limits prevent MOSFET damage during overload and short-circuit conditions. |
| Active Voltage Positioning (AVP) | Only on LTC3310-1 variants - not applicable to LTC3310JV#WTRPBF; this part uses fixed 500mV reference and standard regulation. |
| Die Temperature Monitoring | SSTT pin provides real-time junction temperature readout (4mV/°C) for thermal management and derating in sealed enclosures. |
Applications
| Automotive ADAS Power Supply | Industrial FPGA Core Rail |
|---|---|
|
Use Scenario: Powers image signal processor (ISP) and radar SoC in automotive camera module with strict CISPR25 Class 5 EMI limits. IC Role / Device Role / Timing Role: Primary 1.2V/10A POL regulator with Silent Switcher 2 EMI suppression and AEC-Q100 Grade 1 qualification. Use Value: Meets automotive radiated emissions without external EMI filters, reducing BOM cost and board area while maintaining 150°C operation. |
Use Scenario: Supplies configurable logic core voltage for Xilinx Kintex Ultrascale+ FPGA in factory automation controller. IC Role / Device Role / Timing Role: High-current, fast-transient step-down converter with remote sense and programmable soft-start for reliable configuration sequencing. Use Value: ±1% VOUT accuracy with Kelvin sensing ensures stable core voltage despite PCB trace resistance; 35ns min-on-time supports low-VOUT scaling. |
| 5G Baseband Radio PSU | Server Memory Buffer Rail |
|
Use Scenario: Delivers 1.8V/8A to RF transceiver ASIC in massive MIMO active antenna unit with tight thermal constraints. IC Role / Device Role / Timing Role: High-efficiency, thermally robust DC/DC with 4.5mΩ NMOS switch and 9°C/W θJCbottom for conduction-cooled modules. Use Value: 150°C max junction rating and low RDS(ON) enable continuous 8A operation in sealed, fanless enclosures without thermal throttling. |
Use Scenario: Provides 1.2V DDR5 memory buffer supply in edge server with dynamic load steps up to 6A/µs. IC Role / Device Role / Timing Role: Fast transient response converter using peak current mode control and 500mV reference for tight voltage tolerance. Use Value: 10A capability and <40µs load transient recovery (1A→9A) maintain VDDQ stability during burst memory access, preventing data corruption. |
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 |
|---|---|---|---|
| MPM3695-100 from Monolithic Power Systems | 10A rated, 2.7–16V input, 3mm × 4mm QFN, no integrated hot-loop caps, higher quiescent current (15µA) | Broader VIN range but lacks AEC-Q100 qualification and Silent Switcher EMI performance | Choose for non-automotive 12V intermediate bus applications where size is secondary to input flexibility. |
| TPS546D24A from Texas Instruments | 10A, 3–18V input, 4mm × 5mm QFN, PMBus interface, 0.5% VOUT accuracy, no integrated bypass caps | Offers digital telemetry and margining but larger footprint, higher complexity, and no AEC-Q100 automotive grade | Prefer for programmable, monitored POL in telecom/datacom where digital control justifies added design overhead. |
Compared with MPM3695-100 and TPS546D24A, the LTC3310JV#WTRPBF uniquely combines AEC-Q100 Grade 1 qualification, integrated Silent Switcher 2 capacitors for Class 5 EMI compliance, and 3mm × 3mm footprint - making it optimal for space-constrained, safety-critical automotive and industrial POL designs requiring zero external EMI filtering.
Availability
LTC3310JV#WTRPBF is available at Aetrix Electronics and suitable for automotive ADAS modules, industrial FPGA power supplies, 5G radio front-ends, and server memory buffer rails requiring stable component supply with guaranteed long-term availability and automotive-grade reliability.
Supply support for LTC3310JV#WTRPBF 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 precision instrumentation, industrial automation, communications, and automotive markets.
The LTC3310 series belongs to Analog Devices' Power by Linear™ portfolio, designed specifically for high-efficiency, low-EMI, high-current point-of-load regulation in demanding automotive, industrial, and infrastructure applications.
FAQ
What is the maximum junction temperature rating for the LTC3310JV#WTRPBF?
The LTC3310JV#WTRPBF is rated for operation from –40°C to +150°C junction temperature and is qualified per AEC-Q100 Grade 1. This makes it suitable for under-hood automotive applications and high-ambient industrial environments where thermal headroom is critical. The device includes thermal shutdown and die temperature monitoring via the SSTT pin to support safe operation at its maximum rating.
Does the LTC3310JV#WTRPBF support remote voltage sensing?
Yes, the LTC3310JV#WTRPBF supports true remote voltage sensing using the AGND pin as a Kelvin return for the feedback divider. Connecting AGND directly to the load-side ground enables compensation for up to ±100mV of PCB ground potential difference, ensuring ±1% output voltage accuracy at the point of load - essential for FPGA and ASIC core rails.
Can the LTC3310JV#WTRPBF be synchronized to an external clock?
Yes, the LTC3310JV#WTRPBF supports external clock synchronization via the MODE/SYNC pin, accepting input frequencies from 0.5MHz to 2.25MHz. During synchronization, the internal PLL locks to the external clock's rising edge, automatically adapting slope compensation and operating in pulse-skip mode - ideal for noise-sensitive systems requiring deterministic switching timing.
What is the purpose of the SSTT pin on the LTC3310JV#WTRPBF?
The SSTT pin on the LTC3310JV#WTRPBF serves three functions: (1) soft-start timing via external capacitor charge, (2) voltage tracking during startup for supply sequencing, and (3) die temperature monitoring (4mV/°C) after startup. During faults like output short-circuit, SSTT is pulled low to initiate automatic soft-start recovery - a key reliability feature in the LTC3310JV#WTRPBF.
How does the Silent Switcher 2 architecture improve EMI performance in the LTC3310JV#WTRPBF?
The LTC3310JV#WTRPBF implements Silent Switcher 2 with integrated VIN-to-PGND and VIN-to-AGND bypass capacitors, minimizing high-di/dt loop area and eliminating layout-dependent EMI. This allows the LTC3310JV#WTRPBF to meet CISPR25 Class 5 radiated emissions limits without external ferrite beads or shielding - verified on the DC2629A demo board at 7.5A/1.2V output.
LTC3310JV#WTRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 18-TFQFN 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:
- 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#WTRPBF FAQ
1.How can I place an order for LTC3310JV#WTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3310JV#WTRPBF 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#WTRPBF reliable?
The price and inventory of LTC3310JV#WTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3310JV#WTRPBF is usually 5 days.
3.What payment methods are accepted for LTC3310JV#WTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3310JV#WTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3310JV#WTRPBF?
LTC3310JV#WTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3310JV#WTRPBF 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#WTRPBF?
For technical support, including LTC3310JV#WTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3310JV#WTRPBF requirements.
6.How does Aetrix verify that LTC3310JV#WTRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3310JV#WTRPBF 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#WTRPBF meets industry standards.
7.What is the process for return or replacement of LTC3310JV#WTRPBF?
All LTC3310JV#WTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3310JV#WTRPBF, 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#WTRPBF part is unused and in its original packaging.
Return procedure for LTC3310JV#WTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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