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Analog Devices Inc. LTC3310HV#TRMPBF
- Part No.:
- LTC3310HV#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 18-TFQFN Exposed Pad
- Datasheet:
-
LTC3310HV#TRMPBF.pdf
- Description:
- IC REG BUCK ADJ 10A 18LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:450
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Product details
Overview
LTC3310HV#TRMPBF from Analog Devices is a high-reliability, monolithic synchronous step-down DC/DC converter rated for –40°C to 150°C junction operation, delivering up to 10A output from 2.25V–5.5V input with ±1% VOUT accuracy (0.5V–VIN), 35ns minimum on-time, and Silent Switcher 2 architecture for ultralow EMI in automotive power rail applications.
For engineers reviewing the LTC3310HV#TRMPBF datasheet, LTC3310HV#TRMPBF pinout, LTC3310HV#TRMPBF application, or LTC3310HV#TRMPBF equivalent, this page provides verified thermal, switching, protection, and layout-critical specifications - including AEC-Q100 qualification, 100% duty cycle dropout, programmable 0.5–5MHz frequency, and remote sense compensation - essential for high-density POL designs in servers and automotive ECUs.
Technical Context
The LTC3310HV#TRMPBF employs constant-frequency peak current mode control with internal hot-loop bypass capacitors (VIN–PGND and VIN–AGND) to minimize EMI while enabling stable 5MHz operation. Its dual MOSFET power stage features 4.5mΩ NMOS and 16mΩ PMOS RDS(ON), supporting forced continuous or pulse-skipping modes via MODE/SYNC pin configuration.
It integrates precision functions including 400mV enable threshold with hysteresis, die temperature monitoring via SSTT pin (4mV/°C slope), output overvoltage protection (106–112.5% of VOUT), and PGOOD with 100µs delay. The device supports multi-phase paralleling and external clock synchronization with automatic slope compensation adaptation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.25V to 5.5V - enables direct regulation from 3.3V or 5V intermediate rails without pre-regulation. |
| VOUT Accuracy | ±1% with remote sense - ensures stable core voltage under PCB trace resistance up to ±100mV ground offset. |
| Max Output Current | 10A - sustained delivery with thermal derating per θJA = 42°C/W and exposed PGND pad soldering requirement. |
| Switching Frequency | Programmable 0.5MHz to 5MHz via RT resistor - allows optimization of size vs. efficiency; default 2MHz at RT = 274kΩ. |
| Min On-Time | 35ns - supports high step-down ratios (e.g., 5V→0.5V at 2MHz) without pulse skipping at light load. |
| Shutdown Current | 1µA - minimizes battery drain in always-on automotive modules during sleep mode. |
| Thermal Rating | Junction range –40°C to 150°C - qualified per AEC-Q100 Grade H for under-hood and transmission control units. |
Pinout & Package
Package: 18-lead 3mm × 3mm LQFN with exposed PGND pad (Pin 19), requiring soldering to PCB thermal plane per JEDEC JESD51-12 (θJCbottom = 9°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (1) | Enable input | Precision 400mV rising threshold with 60mV hysteresis; ties directly to VIN for always-on operation. |
| AGND (2) | Remote sense ground | Kelvin connection point for feedback divider low-side; must connect to load ground to cancel IR drop error. |
| VIN (3,4,11,12) | Power input | Four parallel inputs for low-impedance path to internal NMOS/PMOS switches; bypass individually to PGND. |
| PGND (5,10,19) | Power ground return | Main thermal conduction path; exposed pad (Pin 19) must be soldered to large copper area with ≥6 vias. |
| SW (6–9) | Switch node | Four paralleled outputs driving external inductor; requires short, wide traces to minimize ringing and EMI. |
| MODE/SYNC (13) | Frequency control | Configures pulse-skip/forced-continuous mode or accepts/synchronizes to external clock (0.5–2.25MHz). |
| PGOOD (14) | Power status flag | Open-drain output pulled low if VOUT deviates >3% from target or during UVLO/shutdown; 100µs delay filters transients. |
| RT (15) | Oscillator programming | Resistor to AGND sets switching frequency; open circuit defaults to ~2MHz; no pull-up required. |
| SSTT (16) | Soft-start/track/temp | 10µA current source for soft-start capacitor; transitions to die temperature monitor (4mV/°C) post-startup. |
| ITH (17) | Loop compensation | Error amplifier output node; connects RC network to AGND for stability tuning across load/transient conditions. |
| FB/VOUT (18) | Feedback input | Regulates to 500mV (LTC3310HV); for fixed-output variants like LTC3310HV-1, this pin is internally tied to 1.0V reference. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher 2 architecture | Integrated VIN–PGND and VIN–AGND bypass capacitors reduce EMI without external ceramic placement constraints. |
| 100% duty cycle operation | Enables dropout regulation down to VIN ≈ VOUT + IOUT × RDS(ON)_PMOS, critical for battery-backed systems. |
| Configurable multi-phase support | MODE/SYNC pin enables precise phase alignment across multiple LTC3310HV#TRMPBF units for >10A scalable rails. |
| Output short-circuit recovery | Automatic soft-start reinitiation via SSTT pin pull-down upon PGOOD fault detection, eliminating manual reset. |
| AEC-Q100 Grade H qualification | Validated for –40°C to 150°C operation with lifetime reliability testing per automotive stress standards. |
Applications
| Automotive ADAS Power Rail | Server Core Voltage Regulator |
|---|---|
|
Use Scenario: Powering 12nm FPGA-based vision processing unit in forward collision warning system with strict CISPR25 Class 5 EMI limits. IC Role / Device Role / Timing Role: Primary 1.2V/10A POL regulator with synchronized 2MHz switching to avoid noise coupling into analog sensor front-ends. Use Value: Silent Switcher 2 architecture achieves <–40dBµV/m radiated emissions at 100MHz without external EMI filter, reducing BOM cost and board area. |
Use Scenario: Delivering tightly regulated 0.85V core supply to dual-core ARM SoC in edge AI inference server with dynamic load steps up to 8A/µs. IC Role / Device Role / Timing Role: High-bandwidth current-mode controller with 35ns min-on-time and remote sense ensuring <±10mV output deviation across 0–10A load. Use Value: Fast transient response (<50µs settling) and active voltage positioning reduce required bulk capacitance by 30% versus conventional controllers. |
| Industrial PLC I/O Module | 5G Baseband Radio Supply |
|
Use Scenario: Generating isolated 3.3V auxiliary rail from 5V backplane in harsh industrial environment with ambient temperatures up to 85°C. IC Role / Device Role / Timing Role: Robust 10A buck converter with thermal shutdown, overvoltage protection, and 150°C junction rating for continuous operation. Use Value: AEC-Q100 Grade H qualification ensures long-term reliability under thermal cycling and vibration, eliminating field failure root causes. |
Use Scenario: Providing clean 1.8V supply to RF transceiver ASIC in massive MIMO base station with co-located high-speed digital logic. IC Role / Device Role / Timing Role: Low-noise synchronous buck with programmable 4MHz switching to separate switching harmonics from sensitive 2.6GHz LTE bands. Use Value: 5MHz max frequency enables use of smaller 47nH inductors and 22µF ceramic output caps, shrinking total solution size by 40%. |
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 |
|---|---|---|---|
| LTC3310S#TRMPBF | Same architecture and pinout, but rated for –40°C to 125°C junction; lacks AEC-Q100 qualification. | Suitable for commercial/industrial systems without automotive reliability requirements. | Select LTC3310HV#TRMPBF when operating ambient exceeds 125°C or AEC-Q100 compliance is mandatory. |
| TPS546B24RVFT | 6V-input, 10A buck with PMBus interface; higher quiescent current (4mA vs. 1.3mA); no integrated temperature monitor. | Preferred where digital telemetry, margining, or sequencing via I²C is required. | Choose LTC3310HV#TRMPBF for analog-only, ultra-low EMI, and high-temp automotive use; TPS546B24RVFT for programmable digital power systems. |
Compared with LTC3310S#TRMPBF, the LTC3310HV#TRMPBF adds extended temperature capability and automotive qualification at identical footprint and functionality; versus TPS546B24RVFT, it trades digital control for lower EMI, higher efficiency at light load, and integrated thermal monitoring - critical for thermally constrained automotive modules.
Availability
LTC3310HV#TRMPBF is available at Aetrix Electronics and suitable for automotive ADAS systems, industrial PLCs, and 5G radio power supplies requiring stable component supply, AEC-Q100 compliance, and high-temperature operational continuity.
Supply support for LTC3310HV#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, communications, and automotive markets since 1965.
The LTC3310HV#TRMPBF belongs to Analog Devices' Silent Switcher®2 power management product line, engineered specifically for high-current, low-EMI DC/DC conversion in safety-critical automotive and industrial environments.
FAQ
What is the maximum junction temperature rating for the LTC3310HV#TRMPBF?
The LTC3310HV#TRMPBF is rated for continuous operation from –40°C to 150°C junction temperature and is AEC-Q100 Grade H qualified. This makes it suitable for under-hood automotive applications such as engine control units and radar modules where ambient temperatures exceed 125°C. Thermal design must ensure θJA = 42°C/W is met via proper PCB copper area and via count under the exposed PGND pad.
Does the LTC3310HV#TRMPBF support remote voltage sensing, and how is it implemented?
Yes, the LTC3310HV#TRMPBF supports true remote sense via dedicated AGND (Pin 2) and FB (Pin 18) pins. AGND must be connected directly to the load's ground return point, while the feedback resistor divider's low-side node connects to AGND - not local PGND. This Kelvin configuration compensates for up to ±100mV IR drop across PCB traces, maintaining ±1% output accuracy even with high-current routing.
How does the MODE/SYNC pin function in the LTC3310HV#TRMPBF?
In the LTC3310HV#TRMPBF, the MODE/SYNC pin (Pin 13) serves three roles: (1) selects pulse-skipping or forced continuous mode, (2) accepts an external clock (0.5–2.25MHz) for synchronization, or (3) outputs a clock signal when configured for multi-phase operation. Internal PLL automatically adapts slope compensation during sync, and clock loss detection occurs within 20µs - ensuring seamless fallback to default 2MHz operation.
What protection features are integrated into the LTC3310HV#TRMPBF?
The LTC3310HV#TRMPBF integrates output overvoltage protection (106–112.5% of VOUT), output short-circuit recovery via SSTT-triggered soft-start, thermal shutdown, input UVLO with 150mV hysteresis, and valley current limiting (IVALLEYMAX = 10–14A) to prevent inductor saturation during overload. PGOOD provides open-drain fault signaling with 100µs delay to reject transient disturbances.
Can the LTC3310HV#TRMPBF be used in multi-phase configurations, and what is required?
Yes, the LTC3310HV#TRMPBF supports multi-phase operation using the MODE/SYNC pin to align switching edges across multiple units. No external phase-shift components are needed - the internal PLL locks phases automatically. For two-phase operation, tie MODE/SYNC of one device to SW of the other; for N-phase, use external clock distribution. All units must share common AGND and feedback networks for accurate current sharing.
LTC3310HV#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- Silent Switcher®1
- 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 ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-LQFN (3x3)
LTC3310HV#TRMPBF FAQ
1.How can I place an order for LTC3310HV#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3310HV#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 LTC3310HV#TRMPBF reliable?
The price and inventory of LTC3310HV#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3310HV#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3310HV#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3310HV#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3310HV#TRMPBF?
LTC3310HV#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3310HV#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 LTC3310HV#TRMPBF?
For technical support, including LTC3310HV#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3310HV#TRMPBF requirements.
6.How does Aetrix verify that LTC3310HV#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3310HV#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 LTC3310HV#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3310HV#TRMPBF?
All LTC3310HV#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3310HV#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 LTC3310HV#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3310HV#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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