My Inquiry
My Account
Analog Devices Inc. LTC3310SIV#WPBF
- Part No.:
- LTC3310SIV#WPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 18-TFQFN Exposed Pad
- Datasheet:
-
LTC3310SIV#WPBF.pdf
- Description:
- IC REG BUCK ADJ 10A 18LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:624
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3310SIV#WPBF 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, featuring 500mV feedback reference, 35ns minimum on-time, and ±1% VOUT accuracy with remote sense. It operates in automotive-grade temperature range (–40°C to 125°C) and targets high-density POL applications such as FPGA core supplies.
For engineers reviewing the LTC3310SIV#WPBF datasheet, LTC3310SIV#WPBF pinout, LTC3310SIV#WPBF application, or LTC3310SIV#WPBF equivalent, key selection criteria include its 3mm × 3mm LQFN thermal performance, programmable 0.5–5MHz switching frequency, integrated hot-loop bypass capacitors for EMI reduction, and support for multiphase paralleling in high-power systems.
Technical Context
The LTC3310SIV#WPBF employs constant-frequency peak current mode control with internal 500mV reference and error amplifier transconductance of 400µS. Its Silent Switcher 2 architecture integrates VIN-to-PGND and VIN-to-AGND bypass capacitors, enabling ultralow EMI emissions while supporting 2.25V–5.5V input and 0.5V–VIN adjustable output.
It features dual current limiting (14.5A top switch, 12A bottom switch), 100% duty cycle dropout operation, and configurable modes via MODE/SYNC pin-including pulse-skipping for light-load efficiency and forced continuous conduction for low-noise regulation. Thermal shutdown, output overvoltage protection, and die temperature monitoring are embedded.
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 regulators. |
| VOUT Accuracy | ±1% with remote sense - ensures stable core voltage under load-induced ground offsets up to ±100mV. |
| Max Output Current | 10A - delivered continuously in thermally enhanced 3mm × 3mm LQFN with θJCbottom = 9°C/W. |
| Switching Frequency | Programmable 0.5–5MHz via RT resistor - enables compact magnetics and avoids AM band interference. |
| Min On-Time | 35ns - allows high step-down ratios (e.g., 5V→0.5V at 2MHz) without pulse skipping. |
| Shutdown Current | 1µA - minimizes battery drain in always-on subsystems. |
| EN Threshold | Precision 400mV rising threshold with 60mV hysteresis - enables accurate power sequencing with external resistive dividers. |
Pinout & Package
Package: 18-lead 3mm × 3mm LQFN with exposed PGND pad (Pin 19), rated for –40°C to 125°C junction temperature and qualified per AEC-Q100 Grade 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (1) | Enable control input | Activates regulator when voltage exceeds 400mV; hysteresis prevents chatter during brownout. |
| AGND (2) | Remote sense ground | Kelvin connection point for FB divider low-side - cancels PCB trace IR drop for ±1% accuracy. |
| VIN (3,4,11,12) | Main input power supply | Four parallel pins reduce impedance and distribute high di/dt current into internal hot loop. |
| PGND (5,10,19) | Power ground return | Exposed pad (Pin 19) must be soldered to large PCB ground plane for thermal and EMI performance. |
| SW (6–9) | Switch node outputs | Four paralleled SW pins connect directly to inductor - minimize parasitic inductance in high-dI/dt path. |
| MODE/SYNC (13) | Frequency control interface | Accepts external clock (0.5–2.25MHz) or outputs synchronized clock; selects pulse-skip vs forced CCM. |
| PGOOD (14) | Power-good open-drain flag | Asserts after 100µs delay when VOUT reaches 97–99% of target - enables safe system power-up sequencing. |
| RT (15) | Oscillator frequency set | Resistor to AGND programs fSW from 0.5–5MHz; also configures phase offset in multiphase setups. |
| SSTT (16) | Soft-start/track/temp monitor | 10µA current charges external cap for controlled ramp; later serves as die temp sensor (4mV/°C). |
| ITH (17) | Current limit compensation | Loop compensation node - connects RC network to AGND for stability across load/transient conditions. |
| FB/VOUT (18) | Feedback or fixed-output pin | FB mode: regulates to 500mV; VOUT mode (LTC3310S-1): fixed 1.0V - this part uses FB for adjustable output. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher 2 architecture | Integrated VIN–PGND and VIN–AGND bypass capacitors reduce radiated EMI by >30dB vs SS1, meeting CISPR 25 Class 5 limits. |
| 100% duty cycle operation | Enables ultra-low dropout (e.g., 2.5V→2.4V) without external body diode - critical for battery-powered brownout resilience. |
| Configurable multiphase support | MODE/SYNC pin enables precise phase alignment across multiple LTC3310S units - scales output current beyond 10A with <5% current imbalance. |
| Dual current limiting | Top switch limit (14.5–18.5A) and valley limit (10–14A) prevent inductor saturation and enable safe overload recovery. |
| Digital temperature monitoring | SSTT pin outputs 4mV/°C analog voltage - enables real-time thermal derating and predictive thermal management in firmware. |
Applications
| High-Density FPGA Core Supply | Automotive ADAS Domain Controller |
|---|---|
Use Scenario: Powering Xilinx Versal or Intel Agilex FPGA cores requiring 0.8V @ 8A with tight ripple (<15mVpp) and fast transient response. IC Role / Device Role / Timing Role: Primary POL regulator with remote sense, soft-start tracking, and PGOOD sequencing for multi-rail SoC startup. Use Value: 35ns min-on-time enables 0.8V output at 3MHz switching, reducing output capacitance by 40% vs legacy 500kHz converters. | Use Scenario: Providing 1.2V @ 10A to NVIDIA Orin-based vision processing units in ISO 26262-compliant ADAS ECUs. IC Role / Device Role / Timing Role: AEC-Q100 Grade 1 DC/DC converter with thermal monitoring, output short-circuit recovery, and EMI-hardened layout. Use Value: Integrated Silent Switcher 2 meets stringent automotive radiated emissions limits without external EMI filters, saving board space and BOM cost. |
| 5G Baseband Radio Unit (RU) | Industrial Edge AI Accelerator |
Use Scenario: Generating 1.8V @ 6A for O-RAN compliant massive MIMO RFICs operating in thermally constrained outdoor enclosures. IC Role / Device Role / Timing Role: High-efficiency, high-frequency buck converter with programmable frequency (2.2MHz) to avoid LTE/5G band interference. Use Value: 4.5mΩ NMOS + 16mΩ PMOS RDS(ON) delivers >94% efficiency at 6A, reducing heatsink requirements by 35%. | Use Scenario: Supplying 0.75V @ 9A to Google Edge TPU v4 accelerators in fanless industrial gateways with ambient temps up to 85°C. IC Role / Device Role / Timing Role: Thermally robust POL regulator with die temperature monitoring (SSTT pin) and 125°C junction rating. Use Value: Exposed PGND pad and θJCbottom = 9°C/W allow full 10A output without derating - eliminates need for airflow-dependent cooling. |
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 |
|---|---|---|---|
| MP2964GQVA-LF-Z | 40V max VIN, 12A output, no integrated hot-loop caps, requires external bootstrap diode | Better suited for higher-input industrial rails; lacks Silent Switcher EMI performance | Select when input exceeds 5.5V or when cost sensitivity outweighs EMI compliance needs |
| TPS546D24RQFT | 16A output, PMBus interface, 3.5mm × 4.5mm QFN, no SSTT temperature monitor | Targeted at digitally managed server VRMs; adds telemetry but increases complexity | Select when digital configuration, margining, or telemetry are required over analog simplicity |
Compared with MP2964GQVA-LF-Z and TPS546D24RQFT, the LTC3310SIV#WPBF offers superior EMI performance via integrated Silent Switcher 2 capacitors, smaller 3mm × 3mm footprint, and analog temperature monitoring - making it optimal for space-constrained, noise-sensitive automotive and communications designs where digital interfaces are unnecessary.
Availability
LTC3310SIV#WPBF is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, 5G radio unit power delivery, and FPGA core supplies requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.
Supply support for LTC3310SIV#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 precision instrumentation, communications, and automotive markets.
The LTC3310SIV#WPBF belongs to the Silent Switcher 2 DC/DC converter product line, engineered for ultra-low EMI and high efficiency in space-constrained, thermally demanding applications such as autonomous vehicle compute modules and 5G infrastructure.
FAQ
What is the maximum output current capability of the LTC3310SIV#WPBF under continuous operation?
The LTC3310SIV#WPBF delivers up to 10A continuous output current when mounted on a 4-layer PCB with 2oz copper and adequate thermal vias to the internal ground plane. Its 3mm × 3mm LQFN package achieves θJCbottom = 9°C/W, enabling full-rated current without derating at 125°C junction temperature. Peak current capability reaches 14.5A before top-switch limiting activates.
Does the LTC3310SIV#WPBF support remote voltage sensing, and how is it implemented?
Yes, the LTC3310SIV#WPBF supports true remote voltage sensing via its dedicated AGND pin (Pin 2). The feedback divider's low-side resistor connects directly to AGND - not local PGND - establishing a Kelvin sense path to the load. This compensates for up to ±100mV ground potential difference between IC and load, ensuring ±1% output accuracy even with high-current PCB traces.
How does the MODE/SYNC pin function in the LTC3310SIV#WPBF, and what are its operational modes?
The MODE/SYNC pin (Pin 13) in the LTC3310SIV#WPBF serves three roles: (1) accepts external clock signals (0.5–2.25MHz) for synchronization, (2) outputs a synchronized clock for multiphase setups, and (3) selects operating mode - pulse-skipping for light-load efficiency or forced continuous conduction for low-noise regulation. Internal 200kΩ pull-up enables default 2MHz operation when left floating.
What thermal protection mechanisms are built into the LTC3310SIV#WPBF?
The LTC3310SIV#WPBF includes overtemperature protection that disables switching when junction temperature exceeds ~150°C, plus a dedicated die temperature monitor on the SSTT pin (4mV/°C). Unlike basic thermal shutdown, this analog output allows real-time firmware monitoring and gradual derating before fault activation - critical for automotive ASIL-B system-level thermal management.
Can the LTC3310SIV#WPBF be used in parallel configurations, and what design considerations apply?
Yes, the LTC3310SIV#WPBF supports multiphase paralleling via the MODE/SYNC pin for precise phase interleaving. To ensure current sharing within 5%, match RT resistor values across units, use identical inductor DCRs, and route SW and PGND paths symmetrically. The internal current-mode architecture inherently balances load without external current-sharing circuitry.
LTC3310SIV#WPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- Silent Switcher®2
- 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:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-LQFN (3x3)
LTC3310SIV#WPBF FAQ
1.How can I place an order for LTC3310SIV#WPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3310SIV#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 LTC3310SIV#WPBF reliable?
The price and inventory of LTC3310SIV#WPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3310SIV#WPBF is usually 5 days.
3.What payment methods are accepted for LTC3310SIV#WPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3310SIV#WPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3310SIV#WPBF?
LTC3310SIV#WPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3310SIV#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 LTC3310SIV#WPBF?
For technical support, including LTC3310SIV#WPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3310SIV#WPBF requirements.
6.How does Aetrix verify that LTC3310SIV#WPBF is sourced from the original manufacturer or authorized distributors?
All LTC3310SIV#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 LTC3310SIV#WPBF meets industry standards.
7.What is the process for return or replacement of LTC3310SIV#WPBF?
All LTC3310SIV#WPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3310SIV#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 LTC3310SIV#WPBF part is unused and in its original packaging.
Return procedure for LTC3310SIV#WPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3310SIV#WPBF Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
