TMI3255S.pdf• 39mΩ/20mΩ Low RDS(ON) internal FETs
• High Efficiency Synchronous-Mode Operation
• Wide Input Range: 4.5V to 18V
• Feedback Voltage Accuracy 0.6V±1.5%
• 600kHz Switch Frequency Typical
• Up to 5A Output Current
• COT control to achieve fast transient responses
• Power Save Mode at Light Load
• Integrated internal compensation
• Stable with Low ESR Ceramic Output Capacitors
• Over Current Protection with Hiccup Mode
• Thermal Shutdown
• Inrush Current Limit and Soft Start
• Build in Input Over Voltage Protection
• Available in SOT23-6 Package
• Input Supply Voltage Range : 4.5V to 18V
• Output Current : 5A
• Advanced Constant On-Time (ACOTTM) Control for
Ultrafast Transient Response
• Steady Switching Frequency : 500kHz
Forced PWM Mode (RT6255B)
Pulse-Skipping Mode (PSM) at Light Load (RT6255A)
• Optimized for Low-ESR Ceramic Output Capacitors
• Programmable Output Voltage : 0.6V to 5V
• Internal 45mΩ Switch and 23mΩ Synchronous Rectifier
• Cycle-by-Cycle Current Limit Protection
• Internal Soft-Start (Typ 1.5ms) or Externally Adjustable,
Pre-biased Compatible Soft-Start
(Only for Option with SS Pin)
• Power Good Indicator (90%)
(Only for Option with PGOOD Pin)
• Output Under-Voltage Protection (UVP)
• Over-Temperature Protection (OTP)
• Input Under-Voltage Lockout (UVLO)
•Available in TSOT-23-6 (FC) and TSOT-23-8 (FC) Packages
