With a 40-V rated integrated switch FET, the TPS61165-Q1 device is a boost converter that drives LEDs in series. The boost converter runs at a 1.2-MHz fixed switching frequency with 1.2-A switch current limit, and allows for the use of a high brightness LED in general lighting.
●The default white LED current is set with the external sensor resistor Rset, and the feedback voltage is regulated to 200 mV, as shown in the _Typical Application_ section. During the operation, the LED current can be controlled using the 1-wire digital interface (EasyScale™ protocol) through the CTRL pin. Alternatively, a pulse width modulation (PWM) signal can be applied to the CTRL pin through which the duty cycle determines the feedback reference voltage. In either digital or PWM mode, the TPS61165-Q1 device does not burst the LED current; therefore, the device does not generate audible noises on the output capacitor. For maximum protection, the TPS61165-Q1 device features integrated open LED protection that disables it to prevent the output from exceeding its absolute maximum voltage ratings during open LED conditions.
●The TPS61165-Q1 device is available in a SOT-23 package.
● Qualified for Automotive Applications
● 40-V Maximum Breakdown Voltage of Internal
●MOSFET
● 38-V Open LED Protection
● 200-mV Reference Voltage With 2% Accuracy
● 1.2-A Switch FET With 1.2-MHz Switching
●Frequency
● Flexible 1-Wire Digital and PWM Brightness
●Control
● Built-in Soft Start
● Up to 90% Efficiency
● SOT-23 Package
