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Analog Devices Inc. LTC3310JV-1#PBF
- Part No.:
- LTC3310JV-1#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 18-TFQFN Exposed Pad
- Datasheet:
-
LTC3310JV-1#PBF.pdf
- Description:
- IC REG BUCK 1V 10A 18LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:624
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Product details
Overview
LTC3310JV-1#PBF from Analog Devices is a monolithic, Silent Switcher 2 synchronous step-down DC/DC converter delivering up to 10A output current from 2.25V–5.5V input, with fixed 1.0V output, ±1% accuracy over temperature, and AEC-Q100 qualification for automotive junction temperatures up to 150°C. It integrates internal hot-loop bypass capacitors, supports 0.5–5MHz programmable switching frequency, and enables multi-phase parallel operation in high-power POL systems.
For engineers reviewing the LTC3310JV-1#PBF datasheet, LTC3310JV-1#PBF pinout, LTC3310JV-1#PBF application, or LTC3310JV-1#PBF equivalent, key selection criteria include its fixed 1V output with active voltage positioning (AVP), 35ns minimum on-time, 1µA shutdown current, thermal monitoring via SSTT pin, and compatibility with low-ESR ceramic output capacitors in space-constrained automotive and industrial power rails.
Technical Context
The LTC3310JV-1#PBF employs constant-frequency peak current mode control with an internal 500mV reference (adjusted to 1.0V output via integrated resistor divider), enabling fast transient response and stable regulation under dynamic load steps. Its Silent Switcher 2 architecture embeds VIN-to-PGND and VIN-to-AGND bypass capacitors to minimize EMI without external layout compromises.
It features dual current limiting: top-switch limit of 14.5–18.5A and bottom-switch valley limit of 10–14A, plus output short-circuit recovery via SSTT-triggered soft-start, die temperature monitoring (4mV/°C slope), and configurable pulse-skipping or forced continuous mode via MODE/SYNC pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VOUT | Fixed 1.000V ±1% with remote sense - ensures precise core rail regulation for automotive MCUs and FPGAs. |
| IOUT Max | 10A continuous - supports high-current point-of-load applications without external current sharing. |
| VIN Range | 2.25V to 5.5V - compatible with 3.3V and 5V intermediate bus architectures and battery-backed systems. |
| fSW Range | 0.5MHz to 5MHz (RT-programmable) - enables optimization of size vs. efficiency; default 2MHz at RT = 274kΩ. |
| RDS(ON) | Top switch: 16mΩ, Bottom switch: 4.5mΩ - minimizes conduction loss at full load, critical for >90% efficiency at 10A. |
| Min On-Time | 35ns - supports high step-down ratios (e.g., 5V→1V at 2MHz) without pulse skipping instability. |
| Shutdown IQ | 1µA - preserves battery life in always-on automotive modules during sleep mode. |
| Junction Temp | –40°C to +150°C (AEC-Q100 qualified) - validated for under-hood and engine-control unit environments. |
Pinout & Package
Package: 18-lead 3mm × 3mm LQFN with exposed PGND pad (pin 19), θJA = 42°C/W, thermally enhanced for high-power density mounting.
| 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 feedback divider - compensates for PCB trace resistance up to ±100mV offset. |
| VIN (3,4,11,12) | Main input supply inputs | Four parallel pins reduce impedance and AC loop area - critical for low-noise Silent Switcher 2 operation. |
| PGND (5,10,19) | Power ground return path | Three dedicated pins + exposed pad - forms primary thermal and current return path; must be soldered to large copper plane. |
| SW (6–9) | Switch node outputs | Four paralleled SW pins - distribute high di/dt current, minimize parasitic inductance in inductor connection. |
| MODE/SYNC (13) | Multi-phase sync & mode control | Accepts external clock or outputs synchronized signal; selects pulse-skip vs. forced continuous mode. |
| PGOOD (14) | Open-drain power-good indicator | Asserts when VOUT is within 97–99% of nominal - provides system-level fault detection with 100µs delay. |
| RT (15) | Oscillator frequency set | Resistor-to-AGND sets fSW; also configures phase offset in multi-phase setups. |
| SSTT (16) | Soft-start/track/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 | Internal error amplifier output - connects to AGND-referenced RC network for stability tuning. |
| FB/VOUT (18) | Feedback input / fixed-output sense | On LTC3310JV-1#PBF: internally connected to 1.0V divider - no external resistors required; FB pin unused. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher 2 architecture | Integrated VIN-to-PGND and VIN-to-AGND bypass capacitors eliminate external high-frequency caps and reduce EMI radiated emissions by >20dB vs. SS1. |
| Active Voltage Positioning (AVP) | Output drops linearly with load (1.7–3.1mV/A) - improves transient response and reduces required bulk capacitance for FPGA core supplies. |
| Thermal monitoring via SSTT | 4mV/°C analog voltage output - enables real-time die temperature readback without external sensors for thermal throttling. |
| Robust short-circuit recovery | SSTT pin pulled low during fault triggers automatic soft-start re-initiation - prevents latch-up and enables autonomous recovery. |
| 100% duty cycle operation | Enables ultra-low dropout (VIN – VOUT ≈ ILOAD × RDS(ON)_PMOS) - sustains regulation down to VIN = VOUT + ~45mV at 10A. |
| AEC-Q100 Grade J qualification | Validated for –40°C to +150°C junction operation - meets automotive reliability requirements for engine control, ADAS, and infotainment systems. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Powering 32-bit ARM-based microcontroller core requiring stable 1.0V @ 8A with tight ripple and thermal constraints in under-hood environment. IC Role / Device Role / Timing Role: Primary synchronous buck regulator with integrated AVP and thermal monitoring, replacing discrete controller + MOSFET solution. Use Value: Eliminates external feedback resistors and compensating components; AEC-Q100 qualification avoids additional qualification effort; 150°C rating enables direct placement near MCU. |
Use Scenario: Generating isolated 1.0V rail for high-speed digital I/O ASIC in modular automation controller with strict EMI limits. IC Role / Device Role / Timing Role: Low-EMI POL converter synchronized to system clock via MODE/SYNC pin to avoid beat frequencies. Use Value: Silent Switcher 2 compliance meets CISPR-25 Class 5 radiated limits without shielding; 35ns min on-time supports 2MHz operation with small inductors. |
| FPGA Core Supply (Data Center Accelerator) | Telecom Baseband Processor |
Use Scenario: Delivering 1.0V/10A to Xilinx Versal FPGA core with rapid load transients (1A/µs) and <10mV droop requirement. IC Role / Device Role / Timing Role: High-bandwidth current-mode regulator with 500mV reference and 16mΩ/4.5mΩ switches for minimal IR drop. Use Value: Peak current mode control + AVP reduces output capacitor count by 30%; PGOOD enables FPGA configuration lockstep. |
Use Scenario: Powering 5G baseband SoC requiring clean 1.0V supply with low noise and support for dynamic voltage scaling. IC Role / Device Role / Timing Role: Programmable-frequency buck converter synchronized to baseband clock tree to suppress switching noise coupling. Use Value: RT-programmable fSW allows noise spectrum placement away from sensitive RF bands; 1µA shutdown enables deep-sleep modes. |
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 |
|---|---|---|---|
| LTC3310S-1#PBF | Same architecture and pinout, but rated for –40°C to +125°C (not 150°C); uses same 1.0V fixed output and AVP. | Targeted at industrial/commercial systems without automotive thermal stress; lacks AEC-Q100 validation. | Select LTC3310JV-1#PBF for under-hood or engine bay use; LTC3310S-1#PBF suffices for ambient-temperature industrial enclosures. |
| TPS546D24RSAR | 6V-input, 10A PMBus-enabled buck with 0.6V–3.3V adjustable output; no integrated AVP or Silent Switcher EMI reduction. | Requires external feedback resistors and compensation; supports digital telemetry but adds firmware complexity. | Choose TPS546D24RSAR only if PMBus telemetry, voltage margining, or wider VOUT range are mandatory; LTC3310JV-1#PBF offers lower EMI and simpler analog design. |
Compared with LTC3310S-1#PBF, LTC3310JV-1#PBF delivers guaranteed 150°C operation and AEC-Q100 compliance for automotive deployment, while TPS546D24RSAR trades analog simplicity for digital configurability and lacks integrated EMI mitigation - making LTC3310JV-1#PBF optimal for high-reliability, low-noise 1V POL rails.
Availability
LTC3310JV-1#PBF is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC I/O modules, and telecom baseband processors requiring stable component supply with long-term lifecycle assurance and AEC-Q100 traceability.
Supply support for LTC3310JV-1#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 power management semiconductors, serving automotive, industrial, and communications markets with robust, application-optimized ICs.
The LTC3310 family is designed specifically for high-efficiency, low-EMI point-of-load conversion in space- and noise-constrained environments - emphasizing thermal resilience, fast transient response, and automotive-grade reliability.
FAQ
What is the output voltage tolerance of the LTC3310JV-1#PBF over temperature and line?
The LTC3310JV-1#PBF delivers a fixed 1.000V output with ±1% accuracy over its full operating junction temperature range of –40°C to +150°C and input voltage range of 2.25V to 5.5V. This specification includes initial tolerance, line regulation (≤0.025%/V), and load regulation effects - verified per Analog Devices' AEC-Q100 test reports for the J-grade variant.
Does the LTC3310JV-1#PBF require external feedback resistors?
No. The LTC3310JV-1#PBF integrates the feedback resistor divider for its fixed 1.0V output. Pin 18 functions as VOUT (not FB), eliminating the need for external RA/RB resistors. This simplifies layout, improves accuracy by removing resistor tolerance errors, and reduces bill-of-materials cost compared to adjustable variants like LTC3310S.
How does the Active Voltage Positioning (AVP) function in the LTC3310JV-1#PBF?
The LTC3310JV-1#PBF implements AVP with a slope of 1.7–3.1mV/A, causing the output voltage to decrease linearly with increasing load current. At light loads, VOUT is slightly above 1.0V; at full 10A, it settles below 1.0V. This intentional droop improves transient response and reduces required output capacitance for FPGA and ASIC core supplies.
Can the LTC3310JV-1#PBF be synchronized to an external clock?
Yes. The MODE/SYNC pin (pin 13) accepts an external square-wave clock from 0.5MHz to 2.25MHz, locking the internal oscillator's rising edge to the input signal. During synchronization, the LTC3310JV-1#PBF operates in pulse-skip mode and automatically adapts slope compensation - enabling noise-sensitive systems to avoid beat frequencies.
What thermal considerations apply to the LTC3310JV-1#PBF at maximum load?
At 10A output and worst-case 5.5V input, the LTC3310JV-1#PBF dissipates ~0.7W. With θJA = 42°C/W and a 4-layer PCB with 2oz copper and 6+ thermal vias to inner ground planes, junction temperature rise is ~30°C above ambient. For 150°C max junction, ambient must remain ≤120°C - validated per AEC-Q100 thermal testing for the J-grade package.
LTC3310JV-1#PBF 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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.25V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- -
- Current - Output:
- 10A
- 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)
LTC3310JV-1#PBF FAQ
1.How can I place an order for LTC3310JV-1#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3310JV-1#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-1#PBF reliable?
The price and inventory of LTC3310JV-1#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-1#PBF is usually 5 days.
3.What payment methods are accepted for LTC3310JV-1#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3310JV-1#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3310JV-1#PBF?
LTC3310JV-1#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3310JV-1#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-1#PBF?
For technical support, including LTC3310JV-1#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3310JV-1#PBF requirements.
6.How does Aetrix verify that LTC3310JV-1#PBF is sourced from the original manufacturer or authorized distributors?
All LTC3310JV-1#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-1#PBF meets industry standards.
7.What is the process for return or replacement of LTC3310JV-1#PBF?
All LTC3310JV-1#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3310JV-1#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-1#PBF part is unused and in its original packaging.
Return procedure for LTC3310JV-1#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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