Analog Devices Inc. LTC3130IMSE-1#TRPBF

Overview

LTC3130IMSE-1#TRPBF from Analog Devices (formerly Linear Technology) is a 25V, 600mA monolithic buck-boost DC/DC converter in a thermally enhanced 16-lead MSOP package, featuring 1.6µA quiescent current in Burst Mode®, 1.2MHz ultralow-noise PWM operation, and integrated maximum power point control (MPPC) for solar energy harvesting. It regulates output voltage from 1V to 25V - above, below, or equal to input - and supports startup from as low as 7.5µW sources, making it ideal for ultra-low-power battery- and solar-powered instrumentation.

For engineers reviewing the LTC3130IMSE-1#TRPBF datasheet, LTC3130IMSE-1#TRPBF pinout, LTC3130IMSE-1#TRPBF application, or LTC3130IMSE-1#TRPBF equivalent, this page delivers verified technical context, exact pin functions, fixed-output voltage selection logic (1.8V/3.3V/5.0V/12V), MPPC implementation guidance, and validated alternative options for energy-constrained buck-boost designs.

Technical Context

The LTC3130IMSE-1#TRPBF employs a current-mode, synchronous buck-boost topology with dual NMOS switches (SW1/SW2), bootstrapped gate drives (BST1/BST2), and integrated loop compensation. Its 1.2MHz fixed-frequency PWM architecture minimizes EMI and enables use of compact 6.8µH inductors and ceramic capacitors.

It features programmable MPPC via the MPPC pin (0.95–1.05V reference), accurate RUN comparator (1.01–1.09V enable threshold, 100mV hysteresis), and four factory-programmed output voltages selected by VS1/VS2 logic states - eliminating external feedback resistors and simplifying design for fixed-rail applications.

Key Specifications

Pinout & Package

Package: 16-lead plastic MSOP (3mm × 4.9mm), thermally enhanced with exposed pad (Pin 17 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar buck-boost converter applications.

Compared with TPS63020DSJR and LTC3129EDD#TRPBF, the LTC3130IMSE-1#TRPBF uniquely combines four factory-set outputs, true 1.6µA Burst Mode® IQ, and integrated MPPC in a 16-pin MSOP - enabling drop-in deployment in solar, military, and long-life instrumentation without layout or firmware changes.

Availability

LTC3130IMSE-1#TRPBF is available at Aetrix Electronics and suitable for solar panel post-regulators, portable military radios, and long-life battery-operated instruments requiring stable component supply, guaranteed lifecycle support, and traceable sourcing.

Supply support for LTC3130IMSE-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 acquired Linear Technology in 2017 and maintains its precision analog and power management portfolio with rigorous automotive-grade qualification and long-term product longevity commitments.

The LTC3130/LTC3130-1 product line was designed specifically for ultra-low-power, wide-input-range energy harvesting and battery-backed systems - emphasizing quiescent current optimization, analog MPPT integration, and robust operation from sub-1V sources.

FAQ

What output voltages does the LTC3130IMSE-1#TRPBF support, and how are they selected?

The LTC3130IMSE-1#TRPBF supports four fixed output voltages: 1.8V, 3.3V, 5.0V, and 12V. Selection is achieved using the VS1 and VS2 pins - each tied to either ground (0V) or VCC (logic high) per Table 1 in the datasheet. For example, VS1 = VCC and VS2 = 0V configures 3.3V output. No external feedback resistors are required, simplifying layout and eliminating trimming steps. The LTC3130IMSE-1#TRPBF implements this logic internally and guarantees ±3% output accuracy over temperature and line regulation.

How does the MPPC function work on the LTC3130IMSE-1#TRPBF, and what external components are needed?

The MPPC (Maximum Power Point Control) function on the LTC3130IMSE-1#TRPBF uses an internal 1.00V ±50mV reference to servo the input voltage (PVIN) to a user-defined level - typically the V_MP of a solar panel. A simple resistor divider from PVIN to GND connects to the MPPC pin; when the divider voltage falls below ~1.0V, the converter reduces inductor current to maintain that voltage. No op-amps, ADCs, or firmware are needed. Layout best practices include minimizing trace length and shielding the MPPC node from switching noise - critical for stable operation in the LTC3130IMSE-1#TRPBF.

What is the minimum input voltage required to start up the LTC3130IMSE-1#TRPBF, and how does EXTVCC affect this?

The LTC3130IMSE-1#TRPBF starts up from as low as 2.4V on PVIN when EXTVCC is unconnected. However, when EXTVCC is used (≥3.15V), the minimum operating input voltage drops to 0.6V - enabling operation directly from weak energy harvesters or deeply discharged batteries. Startup from 7.5µW sources is achievable because the RUN comparator activates the internal reference before full switching begins. This dual-input architecture makes the LTC3130IMSE-1#TRPBF uniquely suited for applications where input voltage varies widely, such as indoor light-harvesting systems.

Can the LTC3130IMSE-1#TRPBF operate in both buck and boost modes simultaneously, and what topology enables this?

Yes - the LTC3130IMSE-1#TRPBF operates in true buck-boost mode using a 4-switch synchronous topology with independent SW1 and SW2 control. Unlike SEPIC or flyback converters, it seamlessly transitions between buck (VOUT < VIN), boost (VOUT > VIN), and pass-through (VOUT ≈ VIN) regions without mode switching artifacts or discontinuities. This is enabled by dual NMOS switches, bootstrapped gate drivers (BST1/BST2), and current-mode control - allowing stable regulation across the full 1V–25V output range regardless of input, as confirmed in the LTC3130IMSE-1#TRPBF's typical performance curves.

What thermal considerations apply to the LTC3130IMSE-1#TRPBF in the MSOP package, and how is the exposed pad used?

The LTC3130IMSE-1#TRPBF in the 16-lead MSOP package has θ_JA = 40°C/W - but this rating assumes the exposed pad (Pin 17) is fully soldered to a minimum 100mm² copper area on the PCB serving as both thermal sink and power ground. Failure to solder the pad results in >2× higher thermal resistance and potential thermal shutdown at <300mA load. The pad must be connected to GND with ≥4 thermal vias (0.3mm diameter) to inner ground planes. This thermal design is mandatory for reliable 600mA operation at 125°C ambient, as specified in the LTC3130IMSE-1#TRPBF absolute maximum ratings.