LTC3615IUF#PBF

PMIC - Voltage Regulators - DC DC Switching Regulators

The LTC3615IUF#PBF is a high performance dual-input synchronous DC/DC step-down regulator with two independently functioning channels. This device comes packaged in a 16-lead 4mm × 5mm QFN package and provides a wide range of output current and voltage levels. The LTC3615IUF#PBF can directly accept an input voltage range of 4.5V to 20V and convert the voltage down to an output voltage range of 0.6V to 6V. This makes it an ideal solution for a variety of applications such as telecommunications, industrial and power conversion.

Application Field

The LTC3615IUF#PBF offers impressive performance with a wide array of features. It offers high output current in both synchronous and non-synchronous modes, a wide input voltage range, a low quiescent current, fast transient response, and adjustable output voltage. The LTC3615IUF#PBF is perfect for powering a wide range of applications such as cameras, portable and instrumentation systems, portable gaming and other multimedia devices, routers, gateways, servers, and automotive accessories.

Working Principle

The LTC3615IUF#PBF consists of two identical internal synchronous buck converters that each have an integrated high-side and low-side MOSFET. Both channels share a common ground, power supply, and current limit circuit. Additionally, each channel can be enabled or disabled independently. When enabled, the internal MOSFETs are switched at a fixed frequency, up to 2.5MHz, and the output of the LTC3615IUF#PBF is isolated from input voltage variations. During operation, the internal MOSFETs alternately switch to maintain the output voltage by controlling the duty cycle. When the input voltage is greater than the output voltage, energy is switched from the input to the output. When the input voltage is less than the desired output voltage, energy is switched from the output to the input.

Conclusion

The LTC3615IUF#PBF is a high performance dual-input synchronous DC/DC step-down regulator with integrated high-side and low-side MOSFETs. The device offers fast transient response and adjustable output voltage. It is suitable for a wide range of applications including telecommunications, industrial, and automotive electronics. The LTC3615IUF#PBF offers a wide input voltage range, low quiescent current, and high efficiency and is ideal for powering sophisticated systems.