Analog Devices Inc. DC2195B-B

Overview

DC2195B-B from Analog Devices is an evaluation board for the LT8609B monolithic synchronous step-down regulator, supporting 3.0V–42V input and delivering up to 3A continuous output current with pulse-skipping mode only, 2MHz switching frequency, <2.5µA quiescent current in regulation, and ±7.5% power-good accuracy on fixed-output variants. It enables low-EMI, high-efficiency power conversion in automotive and industrial systems requiring stable 5V or 3.3V rails.

For engineers reviewing the DC2195B-B datasheet, DC2195B-B pinout, DC2195B-B application, or DC2195B-B equivalent, this page provides verified board-level specifications, thermal performance data, layout guidance for MSOP-10 footprint compatibility, and direct mapping to LT8609B IC functionality - including SYNC pin omission, TR/SS-controlled soft-start, and PG flag behavior under load transients.

Technical Context

The DC2195B-B implements the LT8609B's fixed-frequency pulse-skipping operation without spread spectrum modulation, using a 18.2kΩ RT resistor to set 2.00MHz nominal switching frequency. It integrates a 2.2µH shielded inductor, 4.7µF INTVCC bypass, 22µF output ceramic capacitor, and side-wettable-flank DFN-compatible layout optimized for thermal dissipation via exposed GND pad soldering.

Board-level design enforces peak current mode control with internal compensation, supports VIN UVLO programming via EN/UV divider, and validates LT8609B-specific behaviors: no SYNC pin connection, 0.772V–0.792V FB reference tolerance, 45ns minimum on-time, and PG assertion within ±7.5% of VOUT for fixed-output configurations.

Key Specifications

Availability

DC2195B-B is available at Aetrix Electronics and suitable for automotive infotainment power supplies, industrial sensor node regulators, and battery-powered telemetry systems requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned validation.

Supply support for DC2195B-B 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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and power management markets since 1965.

The DC2195B-B belongs to Analog Devices' Power by Linear™ evaluation board family, designed specifically to accelerate adoption of their high-efficiency, low-IQ DC/DC regulators in automotive and harsh-environment applications.

FAQ

What is the primary function of the DC2195B-B evaluation board?

The DC2195B-B evaluation board demonstrates and validates the LT8609B synchronous step-down regulator's performance, including its pulse-skipping-only operation, 2MHz switching, <2.5µA quiescent current, and ±7.5% power-good accuracy. It provides a fully assembled, tested reference design enabling rapid prototyping of 3.0V–42V input to 3.3V/5V output power stages. DC2195B-B is not a standalone IC but a functional hardware platform for the LT8609B.

Does DC2195B-B support synchronization to an external clock?

No. The DC2195B-B is configured for the LT8609B variant, which has no SYNC pin and operates exclusively in pulse-skipping mode without external clock synchronization or spread spectrum modulation. Unlike LT8609/LT8609A boards, DC2195B-B omits SYNC circuitry entirely - confirmed by LT8609B datasheet Rev. J Pin Configuration and Operation sections.

Which output voltage options are supported on DC2195B-B?

DC2195B-B supports both fixed 3.3V and 5V outputs via interchangeable components: LT8609A-3.3 or LT8609A-5 ICs, matched feedback networks (LHKB/LHKC markings), and corresponding VOUT pin routing. The board layout accommodates either variant without modification, maintaining identical thermal and EMI performance per datasheet Rev. J ORDER INFORMATION table.

How is power-good (PG) functionality verified on DC2195B-B?

DC2195B-B implements the LT8609B's PG flag per specification: it asserts high only when VOUT is within ±7.5% of the programmed output (3.3V or 5V) and no fault conditions exist. Validation uses the onboard PG pull-down resistor and oscilloscope monitoring during line/load transients - matching the ±7.5% threshold defined for LT8609A-3.3/LT8609A-5 in Electrical Characteristics Table on page 5 of the datasheet.

What thermal management features does DC2195B-B include?

DC2195B-B incorporates a 10-lead MSOP footprint with soldered exposed GND pad (Pin 11), directly connected to internal copper planes for low θJA = 40°C/W. Thermal performance is validated at ≤40°C case rise under 3A, 12VIN→5VOUT steady-state - consistent with LT8609B's MSE package thermal specs and confirmed by TYPICAL PERFORMANCE CHARACTERISTICS graphs G31–G32 in datasheet Rev. J.