TS4268

Preliminary TS4268 180mA Ultra Low Dropout Voltage Regulator with Reset & Watchdog Function SOP-8 Pin Definition: 1. Input 2. N/C 3. Reset Output 4. Ground 8. Output 7. Watchdog 6. Radj 5. Reset Delay General Description TS4268 is a low dropout voltage regulator. The maximum input voltage is 45 V. It can deliver an output current of at least 180mA. TS4268 is short circuit proof and features temperature protection that disables the circuit in the event of impermissibly high temperatures. The watchdog function is disabled as a function of the load, so that a controller is not interrupted during sleep mode by a watchdog reset. Application Description TS4268 regulates an input voltage in the range 5.5V ~ 45V. In the event of an output voltage Vout < VRT, a reset signal is generated. The wiring of the reset switching threshold input enables the value of VRT to be reduced. The reset delay time can be adjusted using an external capacitor. The integrated watchdog monitors the connected active controller. If there is no positive going edge at the watchdog input, the reset output is set to low. The reset delay capacitor provides a wide adjustment range for the pulse repetition time. The watchdog function is only activated if the load exceeds 8mA. This ensures that a microcontroller is not activated during power-down and the current drain is not increased. Features ● Output voltage tolerance < ± 2 % ● Very low current consumption ● Low-drop voltage ● Watchdog ● Settable reset thres...