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.
View datasheet View product folder