600kHz 18V 3.5A Synchronous COT Step-Down Converter, TMI3253 Replace RT6253BHG.
FEATURES

 70mΩ/35mΩ Low RDS(ON) internal FETs

 High Efficiency Synchronous-Mode Operation

 Wide Input Range:4.5V to 18V

 Output Voltage from 0.8V(TMI3253)

 600kHz Switch Frequency

 Up to 3.5A/1.2V 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
RT6253BHG RT6253BHG.pdf

No.13863

FEATURES

 Integrated 95m and 50m FETs

 Continuous Current

     TSOT-23-6 (FC) : 3A

     SOT-563 (FC) : 2.5A

 Input Supply Voltage Range : 4.5V to 17V

 Maximum Output Voltage Range : 7V

 Advanced Constant On-Time (ACOTTM) Control

     Ultrafast Transient Response

     Optimized for Low-ESR Ceramic Output Capacitors

 High Accuracy Feedback Reference Voltage :± 1%

 Optional for Operation Modes :

     RT6253A : Power Saving Mode (PSM)

     RT6253B : Forced PWM Mode

 Fixed Switching Frequency : 580kHz

 Enable Control and Fixed Soft-Start with typ. 1ms

 Safe Start-Up from Pre-biased Output

 Input Under-Voltage Lockout (UVLO)

 Protection Function

    Output Under-Voltage Protection (UVP) with Hiccup Mode

    High- / Low-side MOSFET OCP and OTP Function

• RoHS Compliant and Halogen Free

PIN CONFIGUTION
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