LTC1628IG-PG#TR - High Efficiency, Dual Step-Down Switching Regulator

The LTC1628IG-PG#TR is a high-performance dual step-down switching regulator integrated circuit designed and manufactured by Linear Technology, now part of Analog Devices. This robust power management component is engineered to deliver high efficiency and reliable performance for a wide range of applications requiring precise voltage regulation.

Featuring a wide input voltage range from 2.25V to 5.5V, the LTC1628IG-PG#TR is suitable for systems powered from Li-Ion/Polymer or NiMH/NiCd batteries, as well as from fixed 3.3V or 5V power sources. Its dual-channel architecture allows for independent control of two output voltages, which can be as low as 0.8V with a high accuracy of ±1% over temperature.

The LTC1628IG-PG#TR utilizes a constant-frequency, current mode architecture with a high switching frequency of up to 550kHz per channel, which allows the use of small, low-cost inductors and capacitors. This results in compact and cost-effective power supply designs. Additionally, the device features internal synchronous rectification, which enhances efficiency by reducing power loss associated with diode drops.

Protection features are a key aspect of the LTC1628IG-PG#TR, offering overcurrent and overtemperature protection to safeguard the system under extreme conditions. Furthermore, the power good output indicators provide real-time feedback on the status of each channel, ensuring reliable operation.

The LTC1628IG-PG#TR also supports selectable Burst Mode® operation, which enhances efficiency at light loads by reducing quiescent current. This feature is particularly beneficial for battery-powered devices, where extending battery life is of paramount importance.

Available in a compact 28-lead SSOP package, the LTC1628IG-PG#TR is designed for surface-mount technology, facilitating integration into a variety of circuit board layouts. Its thermally enhanced package ensures efficient heat dissipation, contributing to the device's performance stability across different operating conditions.

In summary, the LTC1628IG-PG#TR from Linear Technology is a versatile and efficient solution for dual-channel voltage regulation requirements. Its combination of high efficiency, compact design, and comprehensive protection features makes it an ideal choice for sophisticated electronic systems.