Analog Devices Inc. LTC3588EMSE-1#TRPBF

Overview

LTC3588EMSE-1#TRPBF from Analog Devices (formerly Linear Technology) is a nanopower energy harvesting power supply IC integrating a low-loss full-wave bridge rectifier and a hysteretic synchronous buck regulator. It targets high-impedance AC sources (e.g., piezoelectric transducers), operates from 2.7V–20V input, delivers up to 100mA at pin-selectable outputs (1.8V/2.5V/3.3V/3.6V), and features 450nA UVLO quiescent current - enabling efficient energy accumulation in wireless sensor nodes.

For engineers reviewing the LTC3588EMSE-1#TRPBF datasheet, LTC3588EMSE-1#TRPBF pinout, LTC3588EMSE-1#TRPBF application, or LTC3588EMSE-1#TRPBF equivalent, this page provides verified technical context, validated pin functions, confirmed output voltage selection logic, real-world efficiency curves across load and input voltage, and two rigorously cross-referenced alternative parts for energy harvesting designs.

Technical Context

The LTC3588EMSE-1#TRPBF implements a dual-rail internal gate drive architecture: CAP (VIN – 4.8V) drives the PMOS high-side switch, while VIN2 (regulated 4.8V above GND) powers the NMOS low-side switch and serves as logic-high reference for D0/D1. Its ultralow-quiescent-current UVLO (450nA typ.) uses a wide hysteresis window (~1V) to prevent short-cycling during intermittent energy harvesting.

Buck regulation employs a hysteretic control loop with sleep/wake thresholds ±12mV around the selected VOUT; during sleep, both input and output quiescent currents are minimized (950nA IVIN, ≤89nA IVOUT). The integrated 20V shunt (25mA max) protects against overvoltage on VIN, allowing higher energy storage per unit capacitance.

Key Specifications

Pinout & Package

Package: 10-Lead Plastic eMSOP (MSE), exposed pad (Pin 11) = GND, requires soldering to PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar energy harvesting power management applications.

Compared with ADP5090ACPZ-1-R7 and BQ25504RGTT, the LTC3588EMSE-1#TRPBF uniquely integrates a full-wave bridge and 20V shunt, making it the only option that natively supports high-VOC piezoelectric sources without external diodes or voltage clamping - critical for robust, miniaturized industrial sensor designs.

Availability

LTC3588EMSE-1#TRPBF is available at Aetrix Electronics and suitable for wireless sensor networks, industrial condition monitoring, and batteryless IoT edge devices requiring stable component supply across extended product lifecycles.

Supply support for LTC3588EMSE-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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and communications markets.

The LTC3588-1 belongs to Linear's nanopower energy harvesting product line, designed specifically to replace batteries in maintenance-free wireless sensors by efficiently converting microwatt-level ambient mechanical, thermal, or light energy into regulated DC power.

FAQ

What is the maximum input voltage the LTC3588EMSE-1#TRPBF can handle?

The LTC3588EMSE-1#TRPBF features an internal 20V shunt regulator on the VIN pin, with absolute maximum rating of 20V for low-impedance sources. For current-fed inputs (e.g., piezo), the device tolerates up to 25mA pulsed current at VIN ≥20V. This allows safe energy storage on input capacitors charged to near 20V, maximizing energy density (E ∝ V²) without external clamping components - a key advantage for piezoelectric harvesters with high open-circuit voltage.

How does the LTC3588EMSE-1#TRPBF achieve ultralow quiescent current in UVLO mode?

The LTC3588EMSE-1#TRPBF achieves 450nA typical input quiescent current in UVLO mode through a dedicated low-power comparator circuit with optimized biasing and hysteresis control. During UVLO, the buck converter and internal rail generators (CAP/VIN2) are fully disabled, leaving only the UVLO comparator and shunt active. This architecture enables multi-hour energy accumulation from µA-level piezo sources - essential for applications where ambient energy is infrequent or low amplitude.

Can the output voltage of the LTC3588EMSE-1#TRPBF be changed dynamically during operation?

Yes, the LTC3588EMSE-1#TRPBF supports dynamic output voltage reconfiguration via D0 and D1 pins while in regulation. As shown in Figure 3 of the datasheet, switching D0/D1 logic levels changes VOUT within milliseconds. If transitioning to a higher output voltage, PGOOD will go low until the new regulation point is reached; if transitioning lower, PGOOD remains asserted. This enables firmware-controlled power scaling - for example, dropping from 3.3V to 1.8V during deep sleep to reduce system leakage.

What is the role of the CAP and VIN2 pins on the LTC3588EMSE-1#TRPBF?

CAP and VIN2 are internally generated gate-drive rails: CAP is regulated at VIN – 4.8V and drives the PMOS high-side switch; VIN2 is regulated at 4.8V above GND and drives the NMOS low-side switch plus serves as logic-high reference for D0/D1. Both require local bypass capacitors (1µF on CAP–VIN, 4.7µF on VIN2–GND) and are not intended for external system use - their sole purpose is to enable efficient synchronous buck operation without external charge pumps or level shifters.

Does the LTC3588EMSE-1#TRPBF require external compensation components?

No, the LTC3588EMSE-1#TRPBF uses a hysteretic control architecture with internal compensation - no external RC networks or compensation capacitors are required. The feedback is taken directly from the VOUT pin, and regulation stability is inherent to the hysteretic loop design. This simplifies layout, reduces BOM count, and eliminates tuning effort - especially valuable in high-volume, space-constrained energy harvesting modules where design cycle time and reliability are critical.