Richtek USA Inc. RT8250GSP

Description
The RT8250 is a high-efficiency synchronous step-down DC/DC converter that can deliver up to 3A output current from a 4.5V to 23V input supply. Its current mode architecture and external compensation allow for optimized transient response over a wide range of loads and output capacitors. Cycle-by-cycle current limit provides protection against shorted outputs, while soft-start eliminates input current surge during start-up. The RT8250 also features output under voltage protection and thermal shutdown protection. The low current (<3μA) shutdown mode provides output disconnection, enabling easy power management in battery-powered systems.

Features
Input voltage range: 4.5V to 23V
High accuracy feedback voltage: 1.5%
Output current: 3A
Integrated N-MOSFET switches
Current mode control
Fixed frequency operation: 340kHz
Output adjustable from 0.925V to 20V
Efficiency up to 95%
Programmable soft-start
Stable with low-ESR ceramic output capacitors
Cycle-by-cycle over current protection
Input under voltage lockout
Output under voltage protection
Thermal shutdown protection
Thermally enhanced SOP-8 (Exposed Pad) package
RoHS compliant and halogen-free

Applications
Industrial and commercial low power systems
Computer peripherals
LCD monitors and TVs
Green electronics/appliances
Point of load regulation of high-performance DSPs, FPGAs, and ASICs