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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Analog Devices Inc. LTC3310SIV-1#TRPBF

Name: LTC3310SIV-1#TRPBF
Brand: Analog Devices Inc.
SKU: LTC3310SIV-1#TRPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LTC3310SIV-1#TRPBF

Manufacturer:: Analog Devices Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 18-TFQFN Exposed Pad

Datasheet:: LTC3310SIV-1#TRPBF.pdf

Description:: IC REG BUCK 1V 10A 18LQFN

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Product details

Overview

LTC3310SIV-1#TRPBF 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 35ns minimum on-time. It operates in pulse-skipping or forced continuous mode, supports clock synchronization up to 2.25MHz, and targets FPGA, ASIC, and µP core supplies requiring low EMI and high efficiency.

For engineers reviewing the LTC3310SIV-1#TRPBF datasheet, LTC3310SIV-1#TRPBF pinout, LTC3310SIV-1#TRPBF application, or LTC3310SIV-1#TRPBF equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and EMI performance data, and real-world design implications for automotive-grade POL systems.

Technical Context

The LTC3310SIV-1#TRPBF employs constant-frequency peak current mode control with internal 500mV reference (495–505mV) and integrated error amplifier transconductance of 800µS-optimized for fast transient response in high-speed digital loads. Its Silent Switcher 2 architecture integrates VIN-to-PGND and VIN-to-AGND bypass capacitors, enabling ultralow radiated EMI per CISPR25 Class 5 without external filtering.

It features dual current limiting: top switch limit of 14.5–18.5A and bottom switch valley limit of 10–14A, with active voltage positioning (1.7–3.1mV/A load-line slope) for improved transient headroom. The device supports multi-phase paralleling via MODE/SYNC pin and delivers 100% duty cycle dropout operation with 4.5mΩ NMOS and 16mΩ PMOS R_DS(ON).

Key Specifications

Parameter	Value and Actual Design Meaning
V_OUT	Fixed 1.000V (±1% with remote sense), enabling precise core rail regulation for 1V FPGA/ASIC supplies.
I_OUT Max	10A continuous output current-supports high-current digital loads without external power stage stacking.
V_IN Range	2.25V to 5.5V-enables direct regulation from single-cell Li-ion, 3.3V, or 5V intermediate bus rails.
f_SW Range	0.5MHz to 5MHz programmable via RT resistor-allows optimization of size vs. efficiency in space-constrained designs.
Min On-Time	35ns-supports high step-down ratios (e.g., 5V→1V at 2MHz) without pulse skipping instability.
Shutdown I_Q	1µA-minimizes battery drain in always-on automotive or industrial standby systems.
Thermal Range	–40°C to +125°C junction-qualified per AEC-Q100 Grade I, suitable for under-hood and industrial environments.

Pinout & Package

Package: 18-lead 3mm × 3mm LQFN with exposed PGND pad (θ_JA = 42°C/W). Exposed pad must be soldered to PCB ground plane for thermal and EMI performance.

Pin/Terminal	Circuit Role	Design Meaning
EN (1)	Enable input with precision threshold	400mV rising threshold (±60mV hysteresis); enables controlled startup sequencing and UVLO-based brownout protection.
AGND (2)	Remote sense ground reference	Kelvin connection point for feedback divider-rejects up to ±100mV PCB ground offset for accurate V_OUT regulation.
VIN (3,4,11,12)	Main input power supply	Four parallel pins reduce trace inductance; internal VIN-to-PGND/AGND bypass caps minimize hot-loop area for EMI suppression.
PGND (5,10,19)	Power ground return path	Three dedicated pins + exposed pad form primary thermal conduction path and low-impedance return for bottom switch current.
SW (6–9)	Switch node output	Four paralleled SW pins drive external inductor; low-inductance routing essential to preserve Silent Switcher 2 EMI advantage.
MODE/SYNC (13)	Multi-phase sync & mode control	Configures pulse-skip/forced-continuous mode or synchronizes switching to external clock (0.5–2.25MHz).
PGOOD (14)	Power-good open-drain output	Asserts after 100µs delay when V_OUT reaches 97–99% of nominal-used for system power sequencing and fault indication.
RT (15)	Oscillator frequency set	Resistor to AGND programs f_SW; 274kΩ yields 2MHz typical-critical for optimizing inductor size and efficiency tradeoffs.
SSTT (16)	Soft-start/track/temp monitor	10µA current charges external cap for controlled ramp; transitions to die temperature monitor (4mV/°C) post-startup.
ITH (17)	Current limit compensation node	Connects external RC network to AGND for loop stability; sets peak inductor current limit via error amplifier servo.
FB/VOUT (18)	Feedback input / fixed-output sense	On LTC3310SIV-1#TRPBF, internally connected to 1.0V regulator-no external divider required; FB pin unused.

Key Features

Feature	Design Value
Silent Switcher® 2 Architecture	Integrated VIN bypass caps + symmetrical layout reduce radiated EMI by >30dB vs. conventional QFN, meeting CISPR25 Class 5 without filters.
Active Voltage Positioning (AVP)	1.7–3.1mV/A load-line slope lowers V_OUT under full load to improve transient droop margin and reduce bulk capacitance requirements.
Robust Short-Circuit Recovery	Valley current limiting (10–14A) + SSTT-pull-down triggers soft-start restart-ensures reliable recovery from sustained output shorts.
Thermally Enhanced LQFN	3mm × 3mm footprint with θ_JCbottom = 9°C/W enables 10A operation at ≤125°C junction without heatsink in 2-layer PCBs.
AEC-Q100 Qualified	Grade I (–40°C to +125°C) qualification supports automotive infotainment, ADAS domain controllers, and industrial PLCs.

Applications

FPGA Core Supply	Automotive Domain Controller
Use Scenario: Powering Xilinx Versal or Intel Agilex FPGA core rails requiring tight 1.0V ±1% tolerance and <50mV transient droop. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 10A at 1.0V with AVP load-line compensation and 35ns min-on-time for 5V→1V conversion. Use Value: Eliminates need for external AVP circuitry; achieves <15µs load-step recovery with 22µF total output capacitance.	Use Scenario: Supplying SoC cores in automotive zonal gateways operating across –40°C to +105°C ambient. IC Role / Device Role / Timing Role: AEC-Q100 qualified POL regulator with PGOOD sequencing, thermal monitoring (via SSTT), and EMI-compliant operation near CAN/FlexRay buses. Use Value: Meets CISPR25 Class 5 radiated emissions without shielding; enables compact 3cm² layout in safety-critical ECUs.
Server DDR Memory Rail	Industrial PLC I/O Module
Use Scenario: Generating 1.0V DDR5 VDDQ rail with dynamic current steps up to 8A at 1A/µs slew rate. IC Role / Device Role / Timing Role: High-bandwidth current-mode controller with 2MHz default switching and 100% duty-cycle dropout for low-VIN brownout resilience. Use Value: Maintains regulation down to 1.05V input (1.0V + diode drop); reduces output ripple to <12mV_pp under 10A load.	Use Scenario: Powering isolated microcontrollers and analog front-ends in factory automation modules with wide input range. IC Role / Device Role / Timing Role: Input-flexible (2.25–5.5V) buck converter with shutdown current <1µA and EN threshold hysteresis for robust brown-in/brown-out control. Use Value: Enables direct 3.7V LiFePO₄ battery operation with <2.5mW quiescent loss; supports 10-year shelf life in remote deployments.

FPGA Core Supply

Automotive Domain Controller

Use Scenario: Powering Xilinx Versal or Intel Agilex FPGA core rails requiring tight 1.0V ±1% tolerance and <50mV transient droop.

IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 10A at 1.0V with AVP load-line compensation and 35ns min-on-time for 5V→1V conversion.

Use Value: Eliminates need for external AVP circuitry; achieves <15µs load-step recovery with 22µF total output capacitance.

Use Scenario: Supplying SoC cores in automotive zonal gateways operating across –40°C to +105°C ambient.

IC Role / Device Role / Timing Role: AEC-Q100 qualified POL regulator with PGOOD sequencing, thermal monitoring (via SSTT), and EMI-compliant operation near CAN/FlexRay buses.

Use Value: Meets CISPR25 Class 5 radiated emissions without shielding; enables compact 3cm² layout in safety-critical ECUs.

Server DDR Memory Rail

Industrial PLC I/O Module

Use Scenario: Generating 1.0V DDR5 VDDQ rail with dynamic current steps up to 8A at 1A/µs slew rate.

IC Role / Device Role / Timing Role: High-bandwidth current-mode controller with 2MHz default switching and 100% duty-cycle dropout for low-VIN brownout resilience.

Use Value: Maintains regulation down to 1.05V input (1.0V + diode drop); reduces output ripple to <12mV_pp under 10A load.

Use Scenario: Powering isolated microcontrollers and analog front-ends in factory automation modules with wide input range.

IC Role / Device Role / Timing Role: Input-flexible (2.25–5.5V) buck converter with shutdown current <1µA and EN threshold hysteresis for robust brown-in/brown-out control.

Use Value: Enables direct 3.7V LiFePO₄ battery operation with <2.5mW quiescent loss; supports 10-year shelf life in remote deployments.

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	Fixed 1.0V output, 10A, but uses MPS's proprietary packaging (integrated inductor); no AVP or SSTT temp monitor.	Lacks remote sensing (AGND), thermal monitoring, and AVP-less suitable for precision FPGA/core rails with dynamic load profiles.	Choose MPM3695-100 only if board space is constrained and integrated inductor is acceptable; LTC3310SIV-1#TRPBF offers superior thermal management and diagnostics.
TPS546D24A	10A, 1.0V fixed, but requires external compensation; no integrated VIN bypass caps; higher 2.5µA shutdown current.	No Silent Switcher EMI mitigation-requires additional ferrite beads/filters to meet CISPR25; lacks die temperature reporting.	Select TPS546D24A only for TI-ecosystem designs where PMBus telemetry is prioritized over EMI performance and thermal visibility.

Compared with MPM3695-100 and TPS546D24A, the LTC3310SIV-1#TRPBF uniquely combines AEC-Q100 qualification, integrated EMI suppression, AVP, and die temperature monitoring in a 3mm × 3mm LQFN-making it optimal for automotive and industrial POL where reliability, diagnostics, and regulatory compliance are non-negotiable.

Availability

LTC3310SIV-1#TRPBF is available at Aetrix Electronics and suitable for FPGA core supplies, automotive domain controllers, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.

Supply support for LTC3310SIV-1#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 LTC3310SIV-1#TRPBF belongs to Analog Devices' Silent Switcher® 2 power management portfolio, engineered specifically for high-density, low-EMI point-of-load applications in automotive ADAS, server, and industrial edge computing systems.

FAQ

What is the output voltage accuracy of the LTC3310SIV-1#TRPBF over temperature?

The LTC3310SIV-1#TRPBF delivers ±1% output voltage accuracy over its full –40°C to +125°C junction temperature range, measured with remote sensing (AGND connection). This is achieved via a trimmed 500mV internal reference (495–505mV) and matched internal resistor divider, eliminating external component drift errors inherent in adjustable variants like the LTC3310S.

Does the LTC3310SIV-1#TRPBF require an external feedback resistor divider?

No. The LTC3310SIV-1#TRPBF has a fixed 1.0V output with internal resistor divider; the FB pin (Pin 18) is not used. Unlike the adjustable LTC3310S, this variant routes VOUT directly to the internal reference node-reducing BOM count, layout complexity, and potential tolerance errors from external resistors.

How does the Silent Switcher 2 architecture in the LTC3310SIV-1#TRPBF reduce EMI?

The LTC3310SIV-1#TRPBF integrates dedicated ceramic bypass capacitors between VIN and PGND, and VIN and AGND, minimizing high-di/dt loop area. Combined with symmetrical SW pin placement and copper pour under the exposed pad, this reduces common-mode EMI by >30dB-enabling CISPR25 Class 5 compliance without external filters or shielding.

Can the LTC3310SIV-1#TRPBF operate with input voltage below 2.5V?

Yes. The LTC3310SIV-1#TRPBF operates down to 2.25V input, supporting single-cell LiFePO₄ (2.5–3.65V) and other low-voltage intermediate rails. At 2.25V input, R_DS(ON) increases slightly, but thermal design (using the exposed PGND pad and ≥4 thermal vias) ensures safe 10A operation up to 125°C junction temperature.

What protection features are built into the LTC3310SIV-1#TRPBF?

The LTC3310SIV-1#TRPBF includes output overvoltage protection (106–112.5% of V_OUT), thermal shutdown (>150°C), output short-circuit recovery via SSTT-triggered soft-start, valley current limiting (10–14A), and PGOOD fault reporting. All protections are fully integrated-no external components required for basic fault coverage.

LTC3310SIV-1#TRPBF 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:: 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:: 2MHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 18-LQFN (3x3)

LTC3310SIV-1#TRPBF FAQ

1.How can I place an order for LTC3310SIV-1#TRPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for LTC3310SIV-1#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 LTC3310SIV-1#TRPBF reliable?

The price and inventory of LTC3310SIV-1#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3310SIV-1#TRPBF is usually 5 days.

3.What payment methods are accepted for LTC3310SIV-1#TRPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3310SIV-1#TRPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LTC3310SIV-1#TRPBF?

LTC3310SIV-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LTC3310SIV-1#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 LTC3310SIV-1#TRPBF?

For technical support, including LTC3310SIV-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3310SIV-1#TRPBF requirements.

6.How does Aetrix verify that LTC3310SIV-1#TRPBF is sourced from the original manufacturer or authorized distributors?

All LTC3310SIV-1#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 LTC3310SIV-1#TRPBF meets industry standards.

7.What is the process for return or replacement of LTC3310SIV-1#TRPBF?

All LTC3310SIV-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3310SIV-1#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 LTC3310SIV-1#TRPBF part is unused and in its original packaging.

Return procedure for LTC3310SIV-1#TRPBF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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