Richtek RT8298A

Description

The RT8298A is a synchronous step-down DC/DC converter with an integrated high side internal power MOSFET and a gate driver for a low side external power MOSFET. It can deliver up to 6A output current from a 4.5V to 24V input supply. The RT8298A's current mode architecture allows the transient response to be optimized over a wider input voltage and load range. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. The RT8298A is synchronizable to an external clock with frequency ranging from 300kHz to 1.5MHz. The RT8298A is available in SOP-8 (Exposed Pad) packages.

Features

• 4.5V to 24V Input Voltage Range
• 6A Output Current
• 45m Internal High Side N- MOSFET
• Current Mode Control
• 600kHz Switching Frequency
• Adjustable Output from 0.8V to 15V
• Up to 95% Efficiency
• Internal Compensation
• Stable with Ceramic Capacitors
• Synchronous External Clock : 300kHz to 1.5MHz
• Cycle- by- Cycle Current Limit
• Input Under Voltage Lockout
• Output Under Voltage Protection
• Power Good Indicator
• Thermal Shutdown Protection
• Force PWM Turn On
• RoHS Compliant and Halogen Free

Typical applications

• Point of Load Regulator in Distributed Power System
• Broadband Communications
• Digital Set top Boxes / Personal Digital Recorders / Flat Panel TVs and Monitors

More information

• Datasheet
• IC product information