TMI5101

1.5MHz, 1A Synchronous Step-Down LED Driver

数据表

TMI5101_DS_EN_V1.1

产品详细信息

特性

说明

·1.5MHz Constant Frequency Operation

·1.0A Output Current  No Schottky Diode Required

·2.5V to 5.5V Input Voltage Range

·Feedback Voltage as Low as 0.1V

·100% Duty Cycle in Dropout

·Low Quiescent Current: 50µA

·Short Circuit Protection

·Thermal Fault Protection

·Input over voltage protection (OVP)

·<1µA Shutdown Current

·SOT23-5 Package

The TMI5101 is a constant frequency, current mode PWM step-down LED driver with 1A output current and 1.5MHz switch frequency. The device integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. This device offers two operation modes, PWM control and PFM Mode switching control, which allows a high efficiency over the wider range of the LED current. The feedback voltage is 0.1V typically. The device also integrates many protection features included input OVP, cycle-by-cycle current limit, over temperature protection.