Analog Devices Inc. LTC3310JV-1#TRMPBF

Overview

LTC3310JV-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 –40°C to 150°C junction temperature, and integrated hot-loop bypass capacitors for ultralow EMI in automotive power systems.

For engineers reviewing the LTC3310JV-1#TRMPBF datasheet, LTC3310JV-1#TRMPBF pinout, LTC3310JV-1#TRMPBF application, or LTC3310JV-1#TRMPBF equivalent, this page provides verified thermal performance (150°C max junction), AEC-Q100 qualification, fixed-output configuration, and real-world EMI test data per CISPR25 Class 5 - critical for ADAS, infotainment, and engine control unit designs.

Technical Context

The LTC3310JV-1#TRMPBF implements constant-frequency peak current mode control with internal 500mV reference and fixed 1.0V output via on-die resistor divider. It uses dual MOSFETs (4.5mΩ NMOS / 16mΩ PMOS) and supports forced continuous or pulse-skipping operation via MODE/SYNC pin.

Its Silent Switcher 2 architecture integrates VIN-to-PGND and VIN-to-AGND bypass capacitors, enabling clean 2MHz switching (RT = 274kΩ) with <35ns minimum on-time and 100% duty cycle dropout capability - essential for low-voltage automotive rail regulation under cold-crank conditions.

Key Specifications

Pinout & Package

Thermally enhanced 18-lead 3mm × 3mm LQFN package with exposed PGND pad (Pin 19), rated θ_JA = 42°C/W. All VIN (Pins 3,4,11,12), PGND (Pins 5,10,19), and SW (Pins 6–9) pins are multiplexed for low-impedance, high-current routing.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down converter applications.

Compared with TPS546B24RVFT and MAX20406AATP/VY+, the LTC3310JV-1#TRMPBF uniquely combines AEC-Q100 Grade 1, fixed 1.0V output, Silent Switcher 2 EMI performance, and AVP in a 3mm × 3mm package - enabling single-chip compliance for demanding automotive core rails without layout compromises.

Availability

LTC3310JV-1#TRMPBF is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment SoC core supplies, and engine control unit sensor interfaces requiring stable component supply across extended temperature and long production lifecycles.

Supply support for LTC3310JV-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 automotive, industrial, communications, and healthcare markets with precision power, signal chain, and RF solutions.

The LTC3310 family is designed specifically for high-density, low-EMI automotive and industrial DC/DC conversion - emphasizing AEC-Q100 reliability, Silent Switcher 2 integration, and robust operation across extreme temperature and input voltage ranges.

FAQ

What is the maximum output current capability of the LTC3310JV-1#TRMPBF?

The LTC3310JV-1#TRMPBF delivers up to 10A continuous output current under typical thermal conditions (θ_JA = 42°C/W, 2-layer PCB). Its 150°C maximum junction temperature and thermally enhanced LQFN package enable sustained 10A operation in automotive under-hood environments when properly heatsinked to a 4-layer board with 2oz copper and ≥6 thermal vias under the exposed pad.

Does the LTC3310JV-1#TRMPBF require external feedback resistors to set the output voltage?

No. The LTC3310JV-1#TRMPBF features an internal resistor divider that fixes the output voltage to 1.000V ±1%. Pin 18 functions as VOUT (not FB), eliminating the need for external resistors - simplifying layout, improving accuracy, and removing drift sources associated with external component tolerances and temperature coefficients.

How does the Silent Switcher 2 architecture in the LTC3310JV-1#TRMPBF reduce EMI compared to standard buck converters?

The LTC3310JV-1#TRMPBF integrates dedicated ceramic bypass capacitors between VIN and PGND, and VIN and AGND, minimizing high-di/dt loop area. This, combined with symmetrical copper layout and differential SW node routing, reduces magnetic field coupling and achieves CISPR25 Class 5 radiated emissions without external filters - unlike conventional buck ICs requiring ferrite beads, common-mode chokes, or shielded inductors.

Can the LTC3310JV-1#TRMPBF operate during automotive cold-crank conditions?

Yes. The LTC3310JV-1#TRMPBF operates down to 2.25V input and includes undervoltage lockout with 150mV hysteresis. During cold-crank (e.g., 2.2V battery), it maintains regulation via 100% duty cycle operation - delivering 1.0V output as long as V_IN ≥ V_OUT + I_LOAD × R_{DS(ON)_PMOS} (≤2.5V at 10A), validated across –40°C to 150°C.

What thermal derating guidance applies to the LTC3310JV-1#TRMPBF at 150°C junction temperature?

At 150°C junction temperature, the LTC3310JV-1#TRMPBF remains fully functional with all specifications guaranteed per AEC-Q100 Grade 1. However, continuous operation at max T_J reduces lifetime; Analog Devices recommends maintaining T_J ≤135°C for >10-year reliability. Derating curves in the datasheet show 10A output sustainable up to 125°C ambient on a 4-layer board with 2oz copper and 10 thermal vias.