TMI3253.pdf? 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
? 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
