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Analog Devices Inc. LTC3310SEV-1#TRMPBF
- Part No.:
- LTC3310SEV-1#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 18-TFQFN Exposed Pad
- Datasheet:
-
LTC3310SEV-1#TRMPBF.pdf
- Description:
- IC REG BUCK 1V 10A 18LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,986
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Product details
Overview
LTC3310SEV-1#TRMPBF 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 integrates internal hot-loop bypass capacitors for ultralow EMI and supports multi-phase parallel operation in high-power POL systems.
For engineers reviewing the LTC3310SEV-1#TRMPBF datasheet, LTC3310SEV-1#TRMPBF pinout, LTC3310SEV-1#TRMPBF application, or LTC3310SEV-1#TRMPBF equivalent, key selection criteria include its AEC-Q100 qualification, 18-lead 3mm × 3mm LQFN package with exposed PGND pad, programmable 0.5–5MHz switching frequency, and integrated output short-circuit and thermal protection.
Technical Context
The LTC3310SEV-1#TRMPBF employs constant-frequency peak current mode control with a 500mV internal reference (adjusted to 1.0V via internal resistor divider), enabling fast transient response and stable regulation across load steps from 1A to 9A. Its Silent Switcher 2 architecture embeds VIN-to-PGND and VIN-to-AGND bypass capacitors to minimize loop area and suppress radiated EMI without external filters.
It supports three operating modes via MODE/SYNC: pulse-skipping for light-load efficiency, forced continuous conduction for low-noise ripple, and synchronization to external clocks up to 2.25MHz. The device implements active voltage positioning (AVP) with 1.7–3.1mV/A droop slope and includes die temperature monitoring via the SSTT pin with 4mV/°C linear output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VOUT | Fixed 1.000V ±1% with remote sense - ensures precise core supply for FPGA/ASIC under ±100mV ground offset. |
| IOUT Max | 10A continuous - supports high-current point-of-load applications without external current sharing. |
| VIN Range | 2.25V to 5.5V - enables direct regulation from single-cell Li-ion, 3.3V, or 5V rails with 100% duty cycle dropout capability. |
| fSW Range | 0.5MHz to 5MHz (RT-programmable) - allows optimization of size vs. efficiency; default 2MHz at RT = 274kΩ. |
| RDS(ON) | 4.5mΩ (NMOS), 16mΩ (PMOS) - minimizes conduction loss at 10A, enabling >90% efficiency at 3.3V→1.0V/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 systems during deep sleep states. |
Pinout & Package
Package: 18-lead 3mm × 3mm LQFN with exposed PGND pad (Pin 19), θJA = 42°C/W, thermally enhanced for 10A operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (1) | Enable input | Precision 400mV threshold with hysteresis - enables reliable power sequencing and brown-out protection. |
| AGND (2) | Remote sense ground | Kelvin connection point for feedback divider - rejects up to ±100mV PCB ground bounce for accurate VOUT. |
| VIN (3,4,11,12) | Main input supply | Four parallel pins reduce impedance and distribute high di/dt current - critical for Silent Switcher 2 EMI performance. |
| PGND (5,10,19) | Power ground return | Three dedicated pins + exposed pad form low-inductance path for bottom switch current - primary thermal conduction path. |
| SW (6–9) | Switch node | Four paralleled SW outputs connect directly to inductor - minimize trace inductance and ringing in high-dV/dt switching. |
| MODE/SYNC (13) | Mode control / clock I/O | Configures pulse-skip vs. forced CCM or synchronizes to external clock - enables deterministic timing in multi-rail systems. |
| PGOOD (14) | Power good indicator | Open-drain output with 97–99% VOUT rising threshold and 100µs delay - provides clean system reset signaling. |
| RT (15) | Oscillator programming | Resistor-to-AGND sets fSW from 0.5–5MHz - enables layout-optimized frequency selection without crystal. |
| SSTT (16) | Soft-start / track / temp monitor | 10µA current source for soft-start ramp; transitions to 4mV/°C die temp readout post-startup - enables thermal derating. |
| ITH (17) | Loop compensation | Transconductance error amp output node - connects RC network to AGND for stability tuning across load/transient conditions. |
| FB/VOUT (18) | Feedback / fixed output | On LTC3310SEV-1#TRMPBF: internally connected to 1.0V divider - eliminates external resistors, reduces BOM count and layout sensitivity. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher 2 architecture | Integrated VIN-to-PGND and VIN-to-AGND bypass capacitors eliminate need for external high-frequency ceramics - reduces EMI by >30dB vs. SS1 in CISPR25 Class 5 testing. |
| AEC-Q100 Grade E qualification | Rated for –40°C to +125°C junction temperature - validated for automotive infotainment, ADAS camera modules, and body electronics. |
| Active Voltage Positioning (AVP) | 1.7–3.1mV/A load-line droop - improves transient response by pre-biasing output voltage, reducing required bulk capacitance by up to 40%. |
| Configurable multi-phase support | MODE/SYNC pin enables phase interleaving with <10ns skew - allows seamless scaling to 20A+ using two LTC3310SEV-1#TRMPBF in parallel. |
| Robust fault protection | Combined top-switch current limit (14.5–18.5A), valley-current limiting (10–14A), output OVP (106–112.5% VOUT), and thermal shutdown - prevents damage during overload, short, or thermal runaway. |
Applications
| Automotive Camera Power | FPGA Core Supply |
|---|---|
|
Use Scenario: Powers 5MP image sensor and ISP in rear-view camera module with strict CISPR25 EMI limits. IC Role / Device Role / Timing Role: Primary 1.0V POL regulator with Silent Switcher 2 EMI suppression and AEC-Q100 reliability. Use Value: Meets Class 5 radiated emissions without ferrite beads or shielding - reduces BOM cost and board area by 35%. |
Use Scenario: Delivers 10A at 1.0V to Xilinx Artix-7 FPGA core rail with tight 30mV ripple and fast load-step response. IC Role / Device Role / Timing Role: High-bandwidth current-mode buck controller with 35ns min on-time and AVP for dynamic load handling. Use Value: Achieves <50µs recovery from 1A→9A load step while maintaining <±15mV deviation - eliminates need for additional ceramic caps. |
| Industrial PLC I/O Module | 5G Small Cell Baseband |
|
Use Scenario: Supplies isolated 1.0V rail to ARM Cortex-M7 microcontroller and ADC in harsh factory environments. IC Role / Device Role / Timing Role: Robust DC/DC with thermal monitoring, UVLO hysteresis, and 1µA shutdown for energy harvesting compatibility. Use Value: Sustains operation down to 2.25V input and survives 150°C junction temperature - extends field lifetime beyond 10 years. |
Use Scenario: Powers baseband ASIC in outdoor 5G small cell requiring high efficiency at partial load and low thermal footprint. IC Role / Device Role / Timing Role: Pulse-skipping mode enabled via MODE/SYNC pin for >85% efficiency at 100mA load. Use Value: Reduces no-load power dissipation by 60% vs. forced CCM - cuts annual energy use by 2.1kWh per unit. |
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 |
|---|---|---|---|
| TPS546B24RVFT | 6V max VIN, 12A rating, PMBus interface, no integrated AVP - requires external telemetry components. | Targets datacenter VR13/VR14 compliance with digital control; lacks AEC-Q100 qualification. | Choose for systems needing telemetry, margining, or multi-rail coordination via PMBus - not for automotive or space-constrained designs. |
| MPM3695-100 | Integrated inductor, 10A rating, 2.7–16V VIN, no Silent Switcher EMI mitigation - higher radiated emissions above 30MHz. | Optimized for rapid prototyping and low-layout-risk designs; not qualified for automotive or industrial temperature grades. | Choose when board space is paramount and EMI filtering can be added externally - avoid where CISPR25 or AEC-Q100 are mandatory. |
Compared with TPS546B24RVFT and MPM3695-100, the LTC3310SEV-1#TRMPBF delivers superior EMI performance in a smaller footprint, automotive-grade reliability without digital overhead, and analog-optimized AVP for transient-critical loads - making it ideal for safety- and noise-sensitive embedded systems.
Availability
LTC3310SEV-1#TRMPBF is available at Aetrix Electronics and suitable for automotive camera modules, FPGA core supplies, industrial PLCs, 5G baseband units, and telecom POL systems requiring stable component supply, long lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LTC3310SEV-1#TRMPBF 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, industrial automation, communications, and automotive markets.
The LTC3310SEV-1#TRMPBF belongs to the Silent Switcher 2 power management product line, engineered specifically for ultra-low EMI, high-efficiency DC/DC conversion in space-constrained, noise-sensitive applications such as ADAS, medical imaging, and high-speed data converters.
FAQ
What is the output voltage tolerance of the LTC3310SEV-1#TRMPBF over temperature and line/load conditions?
The LTC3310SEV-1#TRMPBF guarantees ±1% output voltage accuracy over the full –40°C to +125°C junction temperature range, with remote sensing. This includes line regulation of 0.025%/V and load regulation of 1.7–3.1mV/A (AVP slope), ensuring stable 1.000V ±10mV delivery under all specified operating conditions.
Does the LTC3310SEV-1#TRMPBF require external feedback resistors to set the output voltage?
No. The LTC3310SEV-1#TRMPBF features an internal resistor divider that fixes the output to 1.000V - eliminating external FB resistors, reducing BOM count, and removing layout sensitivity associated with high-impedance feedback nodes. The FB pin (Pin 18) is internally connected to this divider.
How does the Silent Switcher 2 architecture in the LTC3310SEV-1#TRMPBF reduce EMI compared to standard buck converters?
The LTC3310SEV-1#TRMPBF integrates internal hot-loop bypass capacitors between VIN–PGND and VIN–AGND, minimizing high-di/dt loop area. Combined with symmetrical SW pin layout and optimized internal routing, this achieves >30dB lower radiated emissions than Silent Switcher 1 parts - meeting CISPR25 Class 5 limits without external filters.
Can the LTC3310SEV-1#TRMPBF be synchronized to an external clock, and what is the supported frequency range?
Yes. The MODE/SYNC pin accepts an external square wave clock for synchronization. The LTC3310SEV-1#TRMPBF supports synchronization from 0.5MHz to 2.25MHz, with automatic slope compensation adaptation. When no external clock is present, it defaults to RT-programmed frequency (e.g., 2MHz at RT = 274kΩ).
What thermal management features does the LTC3310SEV-1#TRMPBF provide for high-current operation?
The LTC3310SEV-1#TRMPBF includes die temperature monitoring via the SSTT pin (4mV/°C), thermal shutdown at ~150°C, and a thermally enhanced 3mm × 3mm LQFN package with exposed PGND pad. Its θJA = 42°C/W enables 10A operation at +85°C ambient with minimal heatsinking.
LTC3310SEV-1#TRMPBF 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)
LTC3310SEV-1#TRMPBF FAQ
1.How can I place an order for LTC3310SEV-1#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3310SEV-1#TRMPBF 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-1#TRMPBF reliable?
The price and inventory of LTC3310SEV-1#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3310SEV-1#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3310SEV-1#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3310SEV-1#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3310SEV-1#TRMPBF?
LTC3310SEV-1#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3310SEV-1#TRMPBF 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-1#TRMPBF?
For technical support, including LTC3310SEV-1#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3310SEV-1#TRMPBF requirements.
6.How does Aetrix verify that LTC3310SEV-1#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3310SEV-1#TRMPBF 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-1#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3310SEV-1#TRMPBF?
All LTC3310SEV-1#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3310SEV-1#TRMPBF, 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-1#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3310SEV-1#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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