The ST1843 and ST1845 are rad-tolerant current mode PWM controllers providing an industry standard solution for the implementation of provides the off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Its radiation hardness and hermetic packaging makes it an ideal choice for aerospace and other harsh environments.
The document provides technical specifications for the ST1843HR and ST1845HR integrated circuits. These are radiation-hardened, current-mode pulse-width modulation (PWM) controllers intended for off-line or DC-to-DC fixed frequency control schemes. They feature an industry-standard solution with a minimal external parts count.
| Maximum output current | +/- 1 A |
|---|
The maximum duty cycle for the ST1843 is 50%.
The maximum duty cycle for the ST1845 is 100%.
The junction operating temperature range is -40 to 150 °C.