TMI3408

1.5MHz, 1.2A Synchronous Step-Down Converter

数据表

TMI3408_D_DS_EN_V2.9

产品详细信息

特性

说明

· High Efficiency: Up to 96%(@3.3V)

· 1.5MHz Constant Frequency Operation

· 1.2A Output Current

· No Schottky Diode Required

· 2.5V to 5.5V Input Voltage Range

· Output Voltage as Low as 0.6V

· 100% Duty Cycle in Dropout

· Low Quiescent Current: 40µA

· Slope Compensated Current Mode Control for Excellent Line and Load Transient Response

· Soft Start time for 1ms

· Short Circuit Protection with Frequency reduction mode

· Thermal Fault Protection

· Inrush Current Limit and Soft Start

· Input over voltage protection (OVP)

· <1µA Shutdown Current

· Available SOT23-5 and DFN2x2-6 Packages

The TMI3408 are 1.5MHz constant frequency, current mode step-down converters. The devices integrate a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. It is ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+) battery. The output voltage can be regulated as low as 0.6V. The TMI3408 can also run at 100% duty cycle for low dropout operation, extending battery life in portable system. The devices offer two operation modes, PWM control and PFM Mode switching control, which allows a high efficiency over the wider range of the load.