Analog Devices Inc. DC1053A-E

Overview

DC1053A-E from Analog Devices (formerly Linear Technology) is a demonstration circuit board for the LTC3526LEDC synchronous boost DC/DC converter, configured for 1MHz switching frequency, burst mode operation, and 4.7µH inductor. It supports input voltages from 0.8V to 5.5V and delivers regulated 1.8V, 3.3V, or 5V outputs with ±2.5% accuracy at up to 100mA load-ideal for low-power portable sensor node evaluation.

For engineers reviewing the DC1053A-E datasheet, DC1053A-E pinout, DC1053A-E application, or DC1053A-E equivalent, this board enables rapid validation of LTC3526L-based ultra-low-voltage boost conversion in space-constrained battery-powered systems requiring high light-load efficiency and output disconnect capability.

Technical Context

The DC1053A-E implements the LTC3526LEDC IC in a fixed-frequency + burst mode hybrid control scheme, supporting seamless transition between 1MHz PWM and pulse-skipping modes below ~1mA load. Its thermally enhanced 2×2 mm DFN package and integrated 550mA switches enable compact layout with minimal external components.

Input voltage can exceed output voltage while maintaining regulation-enabling buck-boost-like behavior-but with reduced efficiency and increased ripple when VIN is within 100–300mV below VOUT. Output disconnect prevents reverse current flow during shutdown.

Key Specifications

Availability

DC1053A-E is available at Aetrix Electronics and suitable for portable medical sensors, IoT edge nodes, and low-power industrial monitors requiring stable component supply, fast prototyping turnaround, and validated reference design fidelity.

Supply support for DC1053A-E 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 full technical and supply chain continuity for all LTC demonstration circuits and power management ICs.

The DC1053A-E belongs to the LTC3526L family of micropower synchronous boost converters, designed specifically for ultra-low-input-voltage applications where battery life, board area, and output regulation under variable load are critical.

FAQ

What is the primary function of the DC1053A-E demonstration circuit?

The DC1053A-E is a fully assembled evaluation board for the LTC3526LEDC synchronous boost converter IC. It provides immediate hardware validation of 1MHz burst-mode boost operation across 0.8V–5.5V input, with selectable 1.8V/3.3V/5V outputs. The DC1053A-E includes test points, jumpers, and thermal design features enabling direct measurement of efficiency, ripple, and load regulation without custom PCB development.

Which IC does the DC1053A-E evaluate, and what are its key electrical identifiers?

The DC1053A-E evaluates the LTC3526LEDC - a 1MHz, burst-mode, 2×2 mm DFN-packaged synchronous boost controller with integrated 550mA switches. Its part marking is "LCSS", and it uses a 4.7µH inductor. Unlike -2 variants, the DC1053A-E's target IC operates at 1MHz (not 2MHz) and supports output disconnect and input-over-voltage regulation capability.

How do I configure the DC1053A-E for different output voltages?

Use jumpers JP1, JP2, and JP3 on the DC1053A-E to select regulated output voltage: JP1 only = 1.8V; JP2 only = 3.3V; JP3 only = 5V. With no jumpers installed, the default output is 5V. All configurations retain the same LTC3526LEDC IC and 4.7µH inductor - no component changes required. JP4 enables shutdown control.

Does the DC1053A-E support output disconnect and short-circuit protection?

Yes - the DC1053A-E preserves the LTC3526LEDC's native output disconnect feature, which blocks reverse current flow during shutdown or input undervoltage. Short-circuit protection is also active by default. However, adding the optional Schottky diode (D1) on the backside disables both features, so D1 should only be used when efficiency gain outweighs protection requirements.

Can the DC1053A-E operate with input voltage higher than the selected output voltage?

Yes - the DC1053A-E supports input voltages exceeding the regulated output (e.g., 3.3V input to 1.8V output), maintaining regulation via internal switch control. Efficiency drops and output ripple increases when VIN is within 100–300mV below VOUT; increasing output capacitance mitigates this. This behavior is inherent to the LTC3526LEDC IC on the DC1053A-E and documented in its performance curves.