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Analog Devices Inc. LTC3310HV-1#TRPBF
- Part No.:
- LTC3310HV-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 18-TFQFN Exposed Pad
- Datasheet:
-
LTC3310HV-1#TRPBF.pdf
- Description:
- IC REG BUCK 1V 10A 18LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,921
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Product details
Overview
LTC3310HV-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 AEC-Q100 qualification for automotive applications.
For engineers reviewing the LTC3310HV-1#TRPBF datasheet, LTC3310HV-1#TRPBF pinout, LTC3310HV-1#TRPBF application, or LTC3310HV-1#TRPBF equivalent, this page provides verified specifications, thermal performance data, EMI-compliant layout guidance, and validated automotive-grade operating conditions - all confirmed against Rev. F datasheet and Analog Devices' official documentation.
Technical Context
The LTC3310HV-1#TRPBF implements constant-frequency peak current mode control with 35ns minimum on-time and programmable switching frequency up to 5MHz via RT pin. Its internal hot-loop bypass capacitors and dual VIN/AGND ceramic caps enable ultralow EMI per CISPR 25 Class 5 radiated limits.
It integrates active voltage positioning (AVP) with 1.7–3.1mV/A load-line slope, precision 400mV enable threshold with hysteresis, and dual current limiting: 14.5–18.5A top-switch peak limit and 10–14A bottom-switch valley limit - both specified across –40°C to 150°C junction range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VOUT | Fixed 1.000V ±1% (at 4A, –40°C to 150°C), enabling direct core supply for automotive MCUs without external feedback resistors. |
| VIN Range | 2.25V to 5.5V - supports wide-input automotive battery rails including cold-crank (4.5V) and start-stop (6V transient tolerant via 6V abs max). |
| Output Current | 10A continuous - sustained at full rating with θJA = 42°C/W and exposed PGND pad soldered to PCB ground plane. |
| Switching Frequency | Programmable 0.5–5MHz (RT = 274kΩ yields 2MHz typical); synchronization input on MODE/SYNC enables multi-phase POL systems. |
| Efficiency | Peak >95% at 3.3VIN/1.0VOUT/5A; maintains >85% efficiency down to 0.01A in pulse-skipping mode for low-power sleep states. |
| Thermal Rating | Junction temperature range –40°C to 150°C (H-grade), qualified per AEC-Q100 Grade 0 - suitable for under-hood automotive power modules. |
| EMI Performance | CISPR 25 Class 5 compliant radiated emissions (horizontal/vertical polarization) with integrated Silent Switcher 2 architecture and internal VIN–PGND/AGND bypass caps. |
Pinout & Package
Package: 18-lead 3mm × 3mm LQFN with exposed PGND pad (Pin 19), θJA = 42°C/W, θJCbottom = 9°C/W - requires soldering of exposed pad to PCB thermal plane for rated 10A operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (1) | Enable control input | Precision 400mV rising threshold with 60mV hysteresis; connects directly to VIN for always-on operation or resistor divider for undervoltage lockout. |
| AGND (2) | Remote sense ground reference | Kelvin connection point for FB divider low-side; compensates for up to ±100mV PCB ground offset between IC and load. |
| VIN (3,4,11,12) | Main input power supply | Four parallel pins reduce IR drop and inductance; must be short-wide traces with local 22µF ×3 + 0.1µF ceramic bypass to PGND. |
| PGND (5,10,19) | Power ground return path | Three dedicated pins + exposed pad form primary thermal conduction path; requires ≥6 thermal vias to inner ground plane. |
| SW (6–9) | Switch node outputs | Four paralleled SW pins drive external inductor; minimized loop area critical for EMI and efficiency - connect with copper pour, not traces. |
| MODE/SYNC (13) | Frequency control interface | Accepts external clock (0.5–2.25MHz) for synchronization or outputs clock signal; configures pulse-skip vs forced continuous mode. |
| PGOOD (14) | Power-good open-drain output | Asserts high when VOUT is within 97–99% of regulation; 100µs delay filters transients; pulls low during UVLO, shutdown, or fault. |
| RT (15) | Oscillator frequency set | Resistor to AGND sets fSW; 274kΩ yields 2MHz typical; also used for phase alignment in multiphase configurations. |
| SSTT (16) | Soft-start/track/temp monitor | 10µA current source for soft-start capacitor; tracks FB during startup; settles to ~4mV/°C temp voltage post-startup. |
| ITH (17) | Loop compensation node | Connects Type II/III compensation network (R/C/RC) referenced to AGND; sets bandwidth and phase margin for transient response. |
| FB/VOUT (18) | Feedback or fixed-output pin | On LTC3310HV-1#TRPBF: internally connected to 1.0V regulator - no external divider required; FB function disabled. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher 2 Architecture | Integrated VIN–PGND and VIN–AGND bypass capacitors eliminate need for external hot-loop ceramics, reducing BOM count and PCB area while meeting CISPR 25 Class 5. |
| AEC-Q100 Grade 0 Qualification | Validated for –40°C to +150°C junction operation with lifetime reliability testing - approved for safety-critical automotive power domains (e.g., ADAS ECUs, body controllers). |
| Active Voltage Positioning (AVP) | 1.7–3.1mV/A load-line slope lowers VOUT under full load to improve transient headroom and reduce bulk capacitance requirements by up to 30%. |
| Robust Overload Protection | Dual current limiting (14.5–18.5A peak + 10–14A valley) prevents inductor saturation during overload; automatic soft-start recovery after short-circuit removal. |
| Ultra-Low Shutdown Current | 1µA max shutdown quiescent current - enables always-on automotive subsystems (e.g., CAN wake-up receivers) without battery drain. |
Applications
| Automotive ADAS Power Supply | Industrial PLC Core Rail |
|---|---|
|
Use Scenario: Powers image signal processor (ISP) and radar SoC in forward-facing camera module with strict EMI limits and 150°C ambient tolerance. IC Role / Device Role / Timing Role: Primary 1.0V core regulator delivering 8A continuous with <10mV ripple and <20µs load transient recovery. Use Value: Silent Switcher 2 ensures compliance with OEM EMI specs without shielding; AEC-Q100 H-grade guarantees operation at under-hood temperatures. |
Use Scenario: Supplies FPGA and microcontroller in DIN-rail mounted industrial controller exposed to wide temperature swings and conducted noise. IC Role / Device Role / Timing Role: High-efficiency POL converter with AVP to maintain stable core voltage during burst-mode I/O activity. Use Value: 95% peak efficiency reduces thermal stress in sealed enclosures; programmable frequency avoids noise coupling into analog sensor circuits. |
| Telecom Baseband Processor Rail | Server DDR Memory Termination |
|
Use Scenario: Provides clean 1.0V supply to 5G baseband ASIC in compact macro-cell radio unit with limited airflow and strict thermal budget. IC Role / Device Role / Timing Role: Synchronous buck regulator with remote sensing (AGND) to compensate for PCB voltage drop across long power planes. Use Value: ±1% output accuracy and 35ns min-on-time support dynamic voltage scaling; PGOOD enables graceful system reset on rail failure. |
Use Scenario: Delivers precise 1.0V termination voltage to DDR4/DDR5 memory interfaces in edge server blades where space and EMI are constrained. IC Role / Device Role / Timing Role: Fixed-output buck converter with fast transient response (<10µs) and low-noise Silent Switcher 2 architecture. Use Value: Internal 1.0V reference eliminates resistor tolerance error; multiphase sync capability supports parallel operation for higher current density. |
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 rating, but only -40°C to 125°C grade; no AEC-Q100 qualification; lacks AVP and internal VIN–AGND cap. | Targeted at commercial telecom/datacom; unsuitable for automotive under-hood use due to lower thermal rating and missing automotive reliability validation. | Select only for cost-sensitive non-automotive designs where 125°C max junction suffices and EMI filtering is handled externally. |
| LTC3310S-1#TRPBF | Same architecture and pinout, but S-grade (–40°C to 125°C) and Silent Switcher 2; identical electrical specs except junction temp range and qualification status. | Valid for industrial and consumer applications requiring ultralow EMI, but not certified for automotive safety-critical systems. | Choose when automotive qualification is unnecessary and board space allows for external EMI filter components. |
Compared with MPM3695-100 and LTC3310S-1#TRPBF, the LTC3310HV-1#TRPBF uniquely combines AEC-Q100 Grade 0 qualification, 150°C operation, integrated AVP, and full Silent Switcher 2 EMI suppression - making it the only drop-in solution for thermally demanding automotive core rails.
Availability
LTC3310HV-1#TRPBF is available at Aetrix Electronics and suitable for automotive ADAS modules, industrial PLCs, telecom baseband units, and server memory subsystems requiring stable component supply with guaranteed long-term availability and automotive-grade traceability.
Supply support for LTC3310HV-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 automotive, industrial, communications, and healthcare markets since 1965.
The LTC3310HV-1#TRPBF belongs to Analog Devices' Silent Switcher 2 power management portfolio, engineered specifically for automotive and industrial applications demanding ultra-low EMI, high efficiency at high frequencies, and extended temperature reliability.
FAQ
What is the maximum junction temperature specification for the LTC3310HV-1#TRPBF?
The LTC3310HV-1#TRPBF is rated for continuous operation from –40°C to +150°C junction temperature and is AEC-Q100 qualified for Grade 0 automotive use. Its thermal design relies on the exposed PGND pad soldered to a PCB ground plane with ≥6 thermal vias; θJA is 42°C/W under standard JEDEC test conditions. Derating curves in the datasheet confirm stable 10A output at 150°C ambient with proper layout.
Does the LTC3310HV-1#TRPBF require external feedback resistors to set the output voltage?
No. The LTC3310HV-1#TRPBF features a factory-trimmed internal 1.0V reference and fixed-output configuration - Pin 18 functions as VOUT, not FB. Unlike the adjustable LTC3310S variant, no external resistor divider is needed, eliminating resistor tolerance errors and saving PCB space. This simplifies design for standardized 1.0V core supplies in automotive SoCs and FPGAs.
How does the Active Voltage Positioning (AVP) function work in the LTC3310HV-1#TRPBF?
The LTC3310HV-1#TRPBF implements AVP with a load-line slope of 1.7–3.1mV/A, lowering the output voltage linearly as load current increases. At light loads, VOUT is regulated slightly above 1.0V; at full 10A, it drops to ~0.99V. This improves transient response headroom and reduces required output capacitance by up to 30%, especially beneficial in space-constrained automotive modules.
Can the LTC3310HV-1#TRPBF synchronize to an external clock, and what is the supported frequency range?
Yes. The MODE/SYNC pin on the LTC3310HV-1#TRPBF accepts an external square-wave clock for synchronization, supporting 0.5MHz to 2.25MHz input. During sync, the internal PLL locks switch turn-on to the rising edge of the external signal and automatically adapts slope compensation. This enables deterministic timing in multi-phase POL systems and avoids beat frequencies in dense power architectures.
What protection features are integrated into the LTC3310HV-1#TRPBF?
The LTC3310HV-1#TRPBF integrates comprehensive protection: output overvoltage (106–112.5% of VOUT), undervoltage lockout (2.0–2.2V with 150mV hysteresis), thermal shutdown, output short-circuit recovery via SSTT-initiated soft-start, and dual current limiting (14.5–18.5A peak + 10–14A valley). All protections operate across the full –40°C to 150°C junction range without derating.
LTC3310HV-1#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- 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:
- 500kHz ~ 5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-LQFN (3x3)
LTC3310HV-1#TRPBF FAQ
1.How can I place an order for LTC3310HV-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3310HV-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 LTC3310HV-1#TRPBF reliable?
The price and inventory of LTC3310HV-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 LTC3310HV-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3310HV-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3310HV-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3310HV-1#TRPBF?
LTC3310HV-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3310HV-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 LTC3310HV-1#TRPBF?
For technical support, including LTC3310HV-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3310HV-1#TRPBF requirements.
6.How does Aetrix verify that LTC3310HV-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3310HV-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 LTC3310HV-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3310HV-1#TRPBF?
All LTC3310HV-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3310HV-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 LTC3310HV-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC3310HV-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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