My Inquiry
My Account
Analog Devices Inc. LTC3310SIV#WTRPBF
- Part No.:
- LTC3310SIV#WTRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 18-TFQFN Exposed Pad
- Datasheet:
-
LTC3310SIV#WTRPBF.pdf
- Description:
- IC REG BUCK ADJ 10A 18LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,475
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3310SIV#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 500mV feedback reference, 35ns minimum on-time, and ±1% VOUT accuracy with remote sense. It operates in pulse-skip or forced continuous mode and supports clock synchronization for multi-phase POL systems in FPGA core supplies.
For engineers reviewing the LTC3310SIV#WTRPBF datasheet, LTC3310SIV#WTRPBF pinout, LTC3310SIV#WTRPBF application, or LTC3310SIV#WTRPBF equivalent, this page provides verified technical context, thermal-aware package details, EMI-optimized switching behavior, and automotive-grade AEC-Q100 qualification for high-reliability embedded power design.
Technical Context
The LTC3310SIV#WTRPBF employs constant-frequency peak current mode control with internal hot-loop bypass capacitors-enabling ultralow EMI emissions per CISPR25 Class 5 while sustaining 5MHz switching. Its dual MOSFET power stage integrates a 4.5mΩ NMOS and 16mΩ PMOS, supporting 100% duty cycle dropout operation and active voltage positioning (AVP) only in -1 variants.
Thermal management is enhanced via die temperature monitoring through the SSTT pin (4mV/°C slope), programmable soft-start with tracking, and precision enable threshold (400mV ±60mV hysteresis). The device tolerates inductor saturation during overload and includes output overvoltage protection (106–112.5% of VOUT) and short-circuit recovery via SSTT-initiated soft-start.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.25V to 5.5V - enables direct regulation from single-cell Li-ion, USB PD, or intermediate bus rails without pre-regulation. |
| VOUT Accuracy | ±1% with remote sense - ensures stable core voltage under PCB trace IR drop up to ±100mV between local and load ground. |
| Max Output Current | 10A - delivered continuously in thermally optimized layouts using the 3mm × 3mm LQFN's exposed PGND pad and θJCbottom = 9°C/W. |
| Switching Frequency | Programmable 0.5–5MHz via RT resistor - allows optimization of size vs. efficiency; default 2MHz at RT = 274kΩ. |
| Shutdown Current | 1µA - minimizes battery drain in always-on systems requiring low-power retention states. |
| Min On-Time | 35ns - supports high VIN-to-VOUT conversion ratios (e.g., 5V→0.5V) without pulse skipping at light loads. |
| PGOOD Threshold | 97–99% of regulated VOUT - provides tight power-good assertion window for sequenced supply turn-on in multi-rail systems. |
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 input with precision threshold | Shuts down IC below 400mV; hysteresis prevents chatter near threshold; connects directly to VIN if not used. |
| AGND (2) | Remote sense ground reference | Kelvin connection point for FB divider low-side - eliminates ground offset errors in high-current POL applications. |
| 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 | Exposed pad (Pin 19) is PGND - requires soldering to large PCB ground plane with ≥6 thermal vias for θJCbottom = 9°C/W. |
| SW (6–9) | Switch node output | Four paralleled SW pins minimize loop inductance; connect directly to inductor with wide, short copper traces. |
| MODE/SYNC (13) | Multi-phase sync or mode select | Accepts external clock (0.5–2.25MHz) or outputs synchronized clock; configures pulse-skip vs. forced continuous mode. |
| PGOOD (14) | Open-drain power-good indicator | Pulled low when VOUT deviates >3% from setpoint or during fault; requires external pull-up for logic-level interfacing. |
| RT (15) | Oscillator frequency programming | Resistor to AGND sets fSW from 0.5–5MHz; also used for phase offset in multiphase configurations. |
| SSTT (16) | Soft-start/track/temp monitor | 10µA current charges external cap for controlled ramp; transitions to die temp monitor (4mV/°C) post-startup. |
| ITH (17) | Current limit and loop compensation | Compensation network connects here to AGND; voltage sets peak inductor current limit (14.5–18.5A). |
| FB/VOUT (18) | Feedback input or fixed-output sense | Regulates FB to 500mV (adjustable version); LTC3310SIV#WTRPBF uses external resistor divider for VOUT programming. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher 2 architecture | Integrated VIN–PGND and VIN–AGND bypass capacitors reduce EMI radiation by >30dB vs. SS1, meeting CISPR25 Class 5 without filters. |
| Peak current mode control | Enables <10µs load transient response with minimal output capacitance; supports ceramic output caps down to 22µF. |
| Configurable multi-phase operation | MODE/SYNC pin enables precise phase alignment across multiple LTC3310S units - scalable to >20A with <5% current imbalance. |
| Thermally enhanced LQFN | θJCbottom = 9°C/W and θJB = 14°C/W allow 10A operation at 65°C ambient with 2oz copper and 4 thermal vias - no heatsink required. |
| AEC-Q100 Grade 1 qualification | Validated for automotive cabin and infotainment systems operating from –40°C to +125°C junction temperature. |
Applications
| FPGA Core Supply | Automotive ADAS Processor |
|---|---|
|
Use Scenario: Powering Xilinx Versal or Intel Agilex FPGA core rails requiring 0.8V@8A with <±1% regulation and fast transient response. IC Role / Device Role / Timing Role: Primary POL regulator delivering tightly regulated, low-noise VCCINT with remote sense and PGOOD sequencing. Use Value: 35ns min on-time enables 5V→0.8V conversion at 2MHz; ±1% accuracy maintains timing margins under dynamic load steps up to 6A/µs. |
Use Scenario: Supplying NVIDIA Orin or Qualcomm SA8540P SoC cores in camera ECU or domain controller with AEC-Q100 compliance. IC Role / Device Role / Timing Role: Automotive-grade buck converter providing 1.0V/1.2V core voltage with die temperature monitoring and UVLO hysteresis. Use Value: AEC-Q100 Grade 1 rating and –40°C to +125°C operation ensure reliability in engine bay-adjacent mounting; SSTT pin enables real-time thermal derating. |
| Server DDR5 Memory Regulator | Industrial PLC I/O Module |
|
Use Scenario: Generating 1.1V DDR5 VDDQ rail in compact server mezzanine cards where EMI must meet FCC Class B limits. IC Role / Device Role / Timing Role: High-efficiency, low-EMI POL converter synchronized to system clock via MODE/SYNC pin to avoid beat frequencies. Use Value: Silent Switcher 2 architecture achieves >60dB EMI reduction vs. conventional QFN bucks - eliminates need for ferrite beads or shielding cans. |
Use Scenario: Providing isolated 3.3V logic supply in DIN-rail mounted PLC backplane with extended temperature and surge immunity requirements. IC Role / Device Role / Timing Role: Robust industrial DC/DC regulator with 2.25V start-up, 1µA shutdown current, and output short-circuit recovery. Use Value: 100% duty cycle dropout supports brownout operation down to 2.25V input; PGOOD and thermal monitoring enable predictive maintenance alerts. |
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, integrated inductor, no remote sense, ±1.5% VOUT accuracy | Targeted at space-constrained designs where BOM count reduction outweighs EMI performance needs | Select when board area is critical and EMI filtering can be added externally; not suitable for AEC-Q100 or ultra-low noise applications. |
| TPS546D24A from Texas Instruments | 10A, 3–16V input, PMBus interface, 0.5% VOUT accuracy, no Silent Switcher EMI mitigation | Used in programmable power systems requiring telemetry, margining, and digital configuration | Choose when digital control and telemetry are required; avoid where analog simplicity and lowest radiated emissions are mandatory. |
Compared with MPM3695-100 and TPS546D24A, the LTC3310SIV#WTRPBF delivers superior EMI performance without external filters, tighter ±1% output accuracy with Kelvin sensing, and AEC-Q100 qualification - making it optimal for noise-sensitive, high-reliability, and automotive-qualified POL designs.
Availability
LTC3310SIV#WTRPBF is available at Aetrix Electronics and suitable for FPGA core supplies, automotive ADAS processors, and industrial PLC I/O modules requiring stable component supply with long-term lifecycle assurance.
Supply support for LTC3310SIV#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.
The LTC3310SIV#WTRPBF belongs to Analog Devices' Silent Switcher®2 power management portfolio, engineered specifically for high-current, low-EMI point-of-load regulation in automotive, computing, and telecom infrastructure applications.
FAQ
What is the maximum output current capability of the LTC3310SIV#WTRPBF under continuous operation?
The LTC3310SIV#WTRPBF delivers up to 10A of continuous output current when implemented with proper thermal design: 2oz copper, ≥6 thermal vias to inner ground planes, and airflow ≥200LFM. Derating begins above 85°C ambient due to junction temperature limits (125°C max). The device sustains full 10A at 65°C ambient in typical 4-layer PCB layouts per datasheet Figure 10.
Does the LTC3310SIV#WTRPBF support remote voltage sensing, and how is it implemented?
Yes, the LTC3310SIV#WTRPBF supports true remote voltage sensing via its dedicated AGND pin (Pin 2). This pin serves as the Kelvin reference for the FB divider's low-side resistor - eliminating errors from PCB trace resistance between the IC and load. To implement, connect AGND directly to the load-side ground of the output capacitor and tie the FB divider's bottom node to AGND, not to local PGND.
How does the Silent Switcher 2 architecture in the LTC3310SIV#WTRPBF reduce EMI compared to standard QFN converters?
The LTC3310SIV#WTRPBF integrates internal hot-loop bypass capacitors between VIN–PGND and VIN–AGND, minimizing high-di/dt loop area and suppressing common-mode EMI at the source. Combined with symmetrical SW pin layout and matched internal power paths, this reduces peak radiated emissions by >30dB versus conventional QFN bucks - enabling CISPR25 Class 5 compliance without external EMI filters or shielding.
Can the LTC3310SIV#WTRPBF be synchronized to an external clock, and what is the supported frequency range?
Yes, the LTC3310SIV#WTRPBF supports external clock synchronization via its MODE/SYNC pin (Pin 13). It accepts square-wave inputs from 0.5MHz to 2.25MHz and locks its internal oscillator using an integrated PLL. During sync, the top switch turn-on aligns to the rising edge of the external clock, and slope compensation automatically adapts - ensuring stable operation across all supported frequencies.
What thermal protection features are included in the LTC3310SIV#WTRPBF?
The LTC3310SIV#WTRPBF includes overtemperature protection that disables switching when junction temperature exceeds ~150°C, plus continuous die temperature monitoring via the SSTT pin (4mV/°C). Thermal shutdown is latched until EN is cycled; SSTT output enables external circuitry to throttle load or trigger alarms. The exposed PGND pad (Pin 19) must be soldered to maximize heat transfer - θJCbottom = 9°C/W is only achievable with proper thermal land pattern.
LTC3310SIV#WTRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- Silent Switcher®2
- 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:
- 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#WTRPBF FAQ
1.How can I place an order for LTC3310SIV#WTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3310SIV#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 LTC3310SIV#WTRPBF reliable?
The price and inventory of LTC3310SIV#WTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3310SIV#WTRPBF is usually 5 days.
3.What payment methods are accepted for LTC3310SIV#WTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3310SIV#WTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3310SIV#WTRPBF?
LTC3310SIV#WTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3310SIV#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 LTC3310SIV#WTRPBF?
For technical support, including LTC3310SIV#WTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3310SIV#WTRPBF requirements.
6.How does Aetrix verify that LTC3310SIV#WTRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3310SIV#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 LTC3310SIV#WTRPBF meets industry standards.
7.What is the process for return or replacement of LTC3310SIV#WTRPBF?
All LTC3310SIV#WTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3310SIV#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 LTC3310SIV#WTRPBF part is unused and in its original packaging.
Return procedure for LTC3310SIV#WTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3310SIV#WTRPBF 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…
