TK8102 完美替代 MT8102

MT8102   Input 2A/2.5A(Peak) 2.5MHz Synchronous Step-Down Converter

DESCRIPTION
The MT8102 is a 2.5MHz, 2.5A Peak constant on-time (COT) controlled synchronous step-down converter. It can operate with input voltage from 2.7V to 6V and provide output range from 0.6V to input level, thanks to its 100% duty cycle operation. The constant on-time control scheme simplifies loop compensation and offers excellent load transient response. MT8102 consumes extremely low 25µA quiescent current hence achieves superior light load efficiency. The high gain error amplifier in the control loop provides excellent load and line regulation. Proprietary adaptive on-time helps MT8102 to achieve nearly constant switching frequency across load range. MT8102 has cycle-by-cycle current limit and hiccup mode to protect over-load or short circuit fault conditions.
MT8102 is available in (T)SOT23_5L and SOT23_6L and DFN2x2_6L package.

FEATURES
 Wide Input Range from 2.7V to 6V
 Proprietary Fast Transient Constant On Time,Architecture Stable with low ESR Ceramic Output Capacitors 

 +/- 1.5% 0.6V Feedback Voltage
 2.5MHz Switching Frequency
 28µA Low Quiescent Current
 2A Continuous and 2.5A Peak Output Current
 100% Duty Cycle Operation
 Built-in 135mΩ/95mΩ Power Switches
 Internal 0.8 msec (TYP) Soft-Start
 Cycle-by-cycle Current Limit Protection
 Over-Load and Short Circuit Hiccup Mode
 Input Under/Over Voltage Lockout
 Output Discharging Function in Shutdown
 Thermal Shutdown Protection
 Hiccup Mode for Short Circuit and Over-Load Protection

 Available in (T)SOT23_5L and SOT23_6L and DFN2x2_6L Package

 Pb-Free RoHS Compliant

APPLICATIONS
 Solid-State and Hard Disk Drives  WiFi RF Modules
 DC/DC Micro Modules
 Smart Phone and Tablets

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