My Inquiry
My Account
Analog Devices Inc. LTC3310SEV#PBF
- Part No.:
- LTC3310SEV#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 18-TFQFN Exposed Pad
- Datasheet:
-
LTC3310SEV#PBF.pdf
- Description:
- IC REG BUCK ADJ 10A 18LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,829
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3310SEV#PBF 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 applications in FPGA core supplies.
For engineers reviewing the LTC3310SEV#PBF datasheet, LTC3310SEV#PBF pinout, LTC3310SEV#PBF application, or LTC3310SEV#PBF equivalent, key selection criteria include EMI performance (CISPR 25 Class 5 compliant), thermal monitoring via SSTT pin, programmable switching frequency up to 5MHz, and AEC-Q100 qualification for automotive use.
Technical Context
The LTC3310SEV#PBF employs constant-frequency peak current mode control with internal hot-loop bypass capacitors for ultralow EMI and high efficiency at up to 5MHz switching. Its dual MOSFET power stage integrates a 4.5mΩ NMOS and 16mΩ PMOS switch, enabling 100% duty cycle operation and safe inductor saturation tolerance during overload.
It features precision enable threshold (400mV), power-good signaling with 97–99% regulation window, die temperature monitoring via SSTT pin (4mV/°C slope), and configurable multiphase paralleling through MODE/SYNC pin-supporting both external clock sync and internal clock output modes.
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 pre-regulation. |
| VOUT Range | 0.5V to VIN - enables sub-1V FPGA/ASIC core supplies with adjustable output via FB divider. |
| Output Accuracy | ±1% with remote sense - maintains tight regulation despite PCB ground bounce up to ±100mV. |
| Switching Frequency | Programmable 0.5–5MHz via RT resistor - allows optimization of size vs. efficiency and EMI filtering requirements. |
| Top/Bottom RDS(ON) | 16mΩ / 4.5mΩ - minimizes conduction loss at 10A load, enabling >90% efficiency at 3.3V→1.2V conversion. |
| Shutdown Current | 1µA - ensures ultra-low system standby power in battery-backed or always-on applications. |
| Min On-Time | 35ns - supports high VIN-to-VOUT ratios (e.g., 5V→0.5V) without pulse skipping at light loads. |
Pinout & Package
Thermally enhanced 3mm × 3mm LQFN-18 package with exposed PGND pad (Pin 19) requiring solder connection to PCB ground plane for optimal thermal and EMI performance. θJCbottom = 9°C/W enables high-power density designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (1) | Enable input with precision threshold | 400mV rising threshold with 60mV hysteresis - enables accurate UVLO-based sequencing without external comparator. |
| AGND (2) | Remote sense ground reference | Kelvin connection point for FB divider low-side - rejects PCB IR drop to maintain ±1% VOUT accuracy at load. |
| VIN (3,4,11,12) | Main input power supply | Four parallel pins reduce trace inductance and distribute high di/dt current - critical for Silent Switcher 2 EMI performance. |
| PGND (5,10,19) | Power ground return path | Three dedicated pins + exposed pad form low-inductance return for bottom switch - essential for thermal dissipation and stability. |
| SW (6–9) | Switch node output | Four parallel SW pins connect directly to inductor - minimize loop area and parasitic inductance for fast edge control. |
| MODE/SYNC (13) | Multi-phase sync interface | Configurable as clock input (sync), clock output (master), or PWM mode select - enables seamless 2+ phase interleaving. |
| PGOOD (14) | Power-good open-drain output | Asserts when VOUT is within 97–99% of target - provides system-level fault detection with 100µs delay to reject transients. |
| RT (15) | Oscillator frequency set | Resistor-to-AGND sets fSW from 0.5–5MHz - enables EMI spread-spectrum tuning and layout-driven frequency selection. |
| SSTT (16) | Soft-start/track/temp monitor | 10µA current source for soft-start timing; voltage reflects die temp (4mV/°C) after startup - enables thermal derating and sequencing. |
| ITH (17) | Current limit compensation node | Connects external RC network to AGND - sets loop bandwidth and peak current limit response time. |
| FB/VOUT (18) | Feedback input or fixed 1V output | Regulates to 500mV (LTC3310S) or fixed 1.0V (LTC3310S-1) - Pin 18 functions as FB for adjustable version, VOUT for fixed version. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher 2 architecture | Integrated VIN–PGND and VIN–AGND bypass capacitors eliminate external high-frequency ceramic caps - reduces EMI radiated emissions by >20dB vs. SS1. |
| Programmable frequency up to 5MHz | Enables compact magnetics and capacitor selection while maintaining >85% efficiency at 4MHz - ideal for space-constrained POL designs. |
| 100% duty cycle operation | Supports dropout down to VIN = VOUT + IOUT × RDS(ON)PMOS - sustains regulation during brownout without external LDO assist. |
| Dual-mode PWM control | Pulse-skip mode maximizes light-load efficiency; forced continuous mode eliminates low-frequency ripple - selectable via MODE/SYNC pin voltage. |
| Output short-circuit recovery | Automatic soft-start re-initiation upon VOUT recovery - pulls SSTT to ~140mV above VFB to prevent inrush and ensure monotonic ramp-up. |
| AEC-Q100 qualified (Grade 1) | Rated for –40°C to +125°C junction temperature - validated for automotive infotainment, ADAS domain controllers, and body electronics. |
Applications
| Automotive Infotainment SoC Core Supply | FPGA-Based Industrial PLC I/O Module |
|---|---|
Use Scenario: Powering 0.85V/8A core rail for ARM-based infotainment processor under stop-start engine conditions with 6V–16V battery input. IC Role / Device Role / Timing Role: Primary POL regulator with VIN UVLO hysteresis (2.1V/150mV) and 100% duty cycle support to sustain operation during cold-crank dips. Use Value: Silent Switcher 2 EMI compliance eliminates need for ferrite beads or shielding cans - reduces BOM cost and board area in crowded head-unit layouts. |
Use Scenario: Generating 1.2V/10A supply for Xilinx Artix-7 FPGA in modular PLC backplane with strict thermal limits and hot-swap capability. IC Role / Device Role / Timing Role: High-current, thermally monitored POL stage with die temperature reporting via SSTT pin for dynamic fan control and derating. Use Value: 4.5mΩ NMOS + 16mΩ PMOS switches deliver >92% efficiency at full load - reduces heatsink requirement and enables convection-only cooling. |
| 5G Small Cell Baseband Processor | AI Edge Accelerator Card |
Use Scenario: Delivering 0.95V/9A to Qualcomm QDM5675 baseband SoC in outdoor small cell unit with ambient temperatures up to 85°C. IC Role / Device Role / Timing Role: Synchronized multi-phase controller using MODE/SYNC pin to align switching edges across two LTC3310SEV#PBF units - reduces input ripple current by 70%. Use Value: Programmable 2MHz default frequency (RT=274kΩ) matches optimal inductor size for 5G RF noise floor targets - avoids interference with adjacent 2.4GHz/5GHz bands. |
Use Scenario: Providing 0.75V/10A to NVIDIA Jetson Orin NX module in fanless edge inference appliance with strict acoustic and thermal constraints. IC Role / Device Role / Timing Role: Low-noise, high-efficiency POL regulator operating in forced continuous mode to eliminate audible coil whine during burst inference workloads. Use Value: 35ns minimum on-time supports direct 5V→0.75V conversion - eliminates intermediate 3.3V stage and associated losses, improving overall system efficiency by 3.2%. |
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 | Fixed 10A rating, 2.7–16V input, no remote sense, integrated inductor - lacks SSTT temp monitoring and Silent Switcher EMI performance. | Targeted at simpler, lower-cost consumer applications where thermal telemetry and CISPR 25 compliance are not required. | Select when board space is extremely constrained and integrated inductor simplifies layout - avoid for automotive or industrial EMI-sensitive environments. |
| TPS546D24A from Texas Instruments | 12A rating, 3–18V input, PMBus interface, digital loop compensation - adds telemetry and configurability but requires external MOSFETs and larger footprint. | Designed for server VR13/VR14 compliance with dynamic voltage scaling and telemetry logging requirements. | Choose for datacenter or telecom systems needing PMBus-based margining, fault logging, and adaptive loop tuning - not suitable for cost-sensitive automotive designs. |
Compared with MPM3695-100 and TPS546D24A, the LTC3310SEV#PBF delivers superior EMI performance in a smaller 3mm × 3mm package with analog simplicity, making it optimal for automotive and industrial POL where reliability, thermal visibility, and regulatory compliance outweigh digital configurability needs.
Availability
LTC3310SEV#PBF is available at Aetrix Electronics and suitable for automotive infotainment, FPGA core supplies, and 5G baseband power delivery requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.
Supply support for LTC3310SEV#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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC3310SEV#PBF belongs to Analog Devices' Silent Switcher family of high-efficiency, low-EMI DC/DC converters designed specifically for noise-sensitive applications in automotive ADAS, industrial automation, and high-speed computing.
FAQ
What is the maximum output current capability of the LTC3310SEV#PBF?
The LTC3310SEV#PBF delivers up to 10A continuous output current under typical thermal conditions (θJA = 42°C/W, 2-layer PCB). Its 4.5mΩ NMOS and 16mΩ PMOS switches, combined with the 3mm × 3mm LQFN package's 9°C/W θJCbottom, enable this rating without external heatsinking in forced-air environments. Derating is required above 85°C ambient or with reduced copper area.
Does the LTC3310SEV#PBF support remote voltage sensing?
Yes, the LTC3310SEV#PBF supports true remote voltage sensing via its dedicated AGND pin (Pin 2), which serves as the Kelvin return for the FB divider's low-side resistor. This configuration compensates for up to ±100mV PCB ground offset, ensuring ±1% output voltage accuracy at the load - critical for high-current FPGA and ASIC core supplies.
How does the MODE/SYNC pin function in the LTC3310SEV#PBF?
The MODE/SYNC pin (Pin 13) in the LTC3310SEV#PBF serves three roles: (1) accepts external clock for synchronization, (2) outputs clock signal when configured as master in multi-phase setups, and (3) selects PWM mode (pulse-skip vs. forced continuous) based on DC voltage level. Internal 200kΩ pull-up enables default 2MHz operation when left floating.
What thermal protection features does the LTC3310SEV#PBF include?
The LTC3310SEV#PBF includes overtemperature protection that disables switching when junction temperature exceeds ~150°C, plus a die temperature monitor accessible via the SSTT pin (4mV/°C slope). The SSTT voltage can be read externally to implement closed-loop thermal management - e.g., reducing fan speed or throttling downstream logic when die temp rises.
Is the LTC3310SEV#PBF qualified for automotive applications?
Yes, the LTC3310SEV#PBF is AEC-Q100 qualified for Grade 1 (–40°C to +125°C junction temperature) and manufactured under TS 16949-certified processes. Its Silent Switcher 2 architecture meets CISPR 25 Class 5 radiated emissions limits, making it suitable for automotive infotainment, ADAS camera modules, and gateway ECUs without additional EMI filtering.
LTC3310SEV#PBF 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-LQFN (3x3)
LTC3310SEV#PBF FAQ
1.How can I place an order for LTC3310SEV#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3310SEV#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 LTC3310SEV#PBF reliable?
The price and inventory of LTC3310SEV#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3310SEV#PBF is usually 5 days.
3.What payment methods are accepted for LTC3310SEV#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3310SEV#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3310SEV#PBF?
LTC3310SEV#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3310SEV#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 LTC3310SEV#PBF?
For technical support, including LTC3310SEV#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3310SEV#PBF requirements.
6.How does Aetrix verify that LTC3310SEV#PBF is sourced from the original manufacturer or authorized distributors?
All LTC3310SEV#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 LTC3310SEV#PBF meets industry standards.
7.What is the process for return or replacement of LTC3310SEV#PBF?
All LTC3310SEV#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3310SEV#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 LTC3310SEV#PBF part is unused and in its original packaging.
Return procedure for LTC3310SEV#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3310SEV#PBF 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…
