SGM61280.pdf• 8A Output Current
• Fixed Output Voltages
• Wide Input Voltage Range:
4.5V to 23V Input Range for SGM61280-3.3
5.1V to 23V Input Range for SGM61280-5.1
• Constant On-Time (COT) Control
• Low RDSON MOSFET Switches (22mΩ/7mΩ)
• Fast Transient Response, Accurate Regulation
• Supports All Low ESR MLCC Output Capacitors
• Fixed Switching Frequency
• LDO Output Voltage
• Internal Soft-Start
• Integrated Output Discharge Resistance
• Cycle-by-Cycle Valley Over-Current Protection
• Input Under-Voltage Lockout
• Thermal Shutdown Protection
• Output Over/Under-Voltage Protection
• Audio Avoid Mode (AAM) to Avoid PFM Acoustic Noise
• Available in a Green UTQFN-3×3-12AL Package
• 4.5V to 23V (RT6258B) and 5.1V to 23V (RT6258C)
Input Voltage Range 8A Output Current
• ACOTTM Mode Performs Fast Transient Response
• ACOTTM Architecture to Enable All MLCC Output
Capacitor Usage
• Fixed 750kHz (RT6258C) and 500kHz (RT6258B)
Switching Frequency
• High Efficient Internal Power MOSFET Switch-
20mΩ (High-Side) and 10mΩ (Low-Side)
• Fixed 3.3V (RT6258B) and 5V (RT6258C) LDOs
Output Supply 100mA
• Pre-biased Soft-Start
• Cycle-by-Cycle Over-Current Protection
• Input Under-Voltage Lockout
• Thermal Shutdown Protection
• Output Over-/Under-Voltage Protection
• Ultrasonic Mode (USM)
