600kHz, 18V, 5A Synchronous COT Step-Down Converter, TMI3255S Replace RT6255.
FEATURES

 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






PIN CONFIGUTION
CROSS
RT6255 RT6255.pdf

No.13865

FEATURES

• 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

PIN CONFIGUTION
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