LTC3625EDE#TRPBF

The LTC3625EDE#TRPBF is a high-efficiency current-mode synchronous buck converter with an integrated high-side and low-side MOSFETs. It operates from 3.2V to 14V input and provides an adjustable output voltage from 0.6V to VIN. This converter includes new features of enhanced flexibiliy, low RDS(on) switches, and the advantages of existing current mode control ICs. The LTC3625EDE#TRPBF is capable of delivering up to 6A of continuous output current.

The LTC3625EDE#TRPBF is designed for applications where high power density, low noise and high efficiency are required. It can be used in a wide array of applications, such as LED lighting, LED display, portable electronics, power over Ethernet (PoE) systems, and server redundant power supplies. It can also be used in DC/DC converter applications where an efficient power management solution is desired.

Application Field

The LTC3625EDE#TRPBF is designed for use in high-efficiency, low noise DC/DC converter systems. It is well suited for use as a pre-regulator in a number of power over Ethernet (PoE) systems, as well as in AC adapter, notebooks, flat panel display, TVs and other electronic products. Additionally, it can also be used in server redundant power supplies, where an efficient power management solution is required.

Most notably, the LTC3625EDE#TRPBF is well suited for LED lighting applications. The integrated high and low side MOSFETs allow for a high power density, while the low RDS(on) and fast transient response provide an efficient and reliable solution. Due to its low no-load current, the LTC3625EDE#TRPBF can provide excellent efficiency in low-power applications, such as LED lighting.

Working Principle

The LTC3625EDE#TRPBF operates in current-mode for fast transient response, high efficiency, and easy compensation. A 55V N-channel MOSFET is integrated on the low side and a 20V P-channel MOSFET is integrated on the high side to reduce component count, simplify designs and reduce cost. The current-mode control and OTP protection enhance the flexibility and reliability of the LTC3625EDE#TRPBF.

The LTC3625EDE#TRPBF has an input voltage range from 3.2V to 14V and is capable of delivering up to 6A of continuous output current. The output voltage can be adjusted with an external resistor divider or applied directly to the VIN pin. The output voltage can also be synchronized to an external clock with the SYNC pin.

The LTC3625EDE#TRPBF also contains Thermal Shutdown and Over-Current Protection (OCP) features. The OCP can be set by an external resistor and the rise-time and fall-time can be adjusted with external components. The LTC3625EDE#TRPBF features an input undervoltage lockout to ensure that the input voltage is sufficient to maintain accurate regulation.

The LTC3625EDE#TRPBF also contains a wide range of features specifically designed to improve dynamic performance and reduce noise. Frequency jitter filters, pulse-skipping and Soft-Start functions all help reduce noise and eliminate switching MHz ringing. The LTC3625EDE#TRPBF also has an innovative feature called Power Path Control (PPC) which allows for seamless transition between the output voltage and input voltage.

Conclusion

The LTC3625EDE#TRPBF is a high-efficiency current-mode synchronous buck converter with integrated high-side and low-side MOSFETs. It provides an adjustable output voltage from 0.6V to VIN and can deliver up to 6A of continuous output current.

The LTC3625EDE#TRPBF is ideal for use in LED lighting, LED display, portable electronics, power over Ethernet (PoE) systems, server redundant power supplies and other DC/DC converter applications requiring an efficient power management solution. The current-mode control and OTP protection make it a reliable solution, while its low RDS(on), fast transient response, low no-load current, frequency jitter filters, pulse-skipping and Soft-Start functions all help to reduce noise and improve dynamic performance.