SC284ULTRT

The SC284 is a dual channel 1.8A synchronous step-down regulator designed to operate with an input voltage range of 2.9 to 5.5 Volts. Each channel offers fifteen pre-determined output voltages via four control pins programmable from 0.8 to 3.3 Volts. The control pins allow for on-the-fly voltage changes, enabling system designers to implement dynamic power savings. The SC284 is also capable of adjusting the output voltage via an external resistor divider.The device operates with a fixed 2.5MHz oscillator frequency, allowing the use of small surface mount external components.Connecting Ctl0 - Ctl3 to logic low forces the device into shutdown mode reducing the supply current to less than 1µA. Connecting any of the control pins to logic high enables the converter and sets the output voltage. Other features include under voltage lockout, soft-start to limit inrush current, and over-temperature protection.The SC284 is available in a 3 x 3 x 0.6 (mm) MLPQ-UT20 package and has a rated temperature range of -40 to+85°C.

• Vin Range - 2.9 - 5.5V
• Vout Selectable - 0.8 - 3.3V
• Up to 1.8A Output Current for Each Channel
• Ultra-Small Footprint, <1mm Height Solution
• Switching Frequency - 2.5MHz
• Efficiency Up to 94%
• Excellent Light Load Efficiency
• Low Output Noise Across Load Range
• Excellent Transient Response
• Start Up into Pre-Bias Output
• 100% Duty-Cycle Low Dropout Operation
• Shutdown Current - <1µA
• Internal Soft Start
• Input Under-Voltage Lockout
• Output Over-Voltage, Current Limit Protection
• Over-Temperature Protection
• Adjustable Output Voltage
• Package - 3 x 3 x 0.6(mm) UT20
• Temperature Range - -40 to +85°C
• Lead-free, halogen-free, and RoHS/WEEE compliant