RT9725A

RT9725A/B Express Card Power Interface Switch General Description The RT9725A/B power distribution switches are designed to fulfill power management requirements of Express Card specification. The RT9725A/B supports systems with single slot ExpressCard|34 and ExpressCard|54 socket. The device distributes 3.3V, AUX and 1.5V to the Express Card socket. Each power rail is protected with current limit circuitry when output load exceeds over-current threshold or short-circuits occurs. A thermal protection circuit turns off switches to prevent the device from damage when power dissipation is increased by continuous heavy overloads or short-circuits in the switches. The RT9725A/B is available in WQFN-20L 3x3 package. Features z Meets Express Card Standard (ExpressCard|34 and ExpressCard|54) z Compliant with the Express Card Compliance Check Lists, Compliance ID : EC100328 z Fully Satisfy the Express Card Implementation Guidelines z Supports Systems with WAKE Function z TTL-Logic Compatible Input z Under-Voltage Lockout Protection z Over Current Protection z Over Temperature Protection z RoHS Compliant and Halogen Free Ordering Information Applications RT9725A/B z PCs Package Type QW : WQFN-20L 3x3 (W-Type) z PDAs z Digital Cameras Lead Plating System z TV and Set Top Boxes G : Green (Halogen Free and Pb Free) Note : SYSRST Pull High Resistor A : With Internal Resistor B : Without Internal Resistor Pin Configurations (TOP VIEW) SHDN FLG RCLKEN AUXIN NC Richtek produ...