STMST1845RKG

The ST1845HR ICs are radtolerant 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. Radiation hardness and hermetic packaging makes it an ideal choice for aerospace and other harsh environments.

• Oscillator frequency guaranteed at 250 kHz
• Trimmed oscillator for precise frequency control
• Current mode operation to 500 kHz automatic feed forward compensation
• Latching PWM for cycle-by-cycle current limiting
• Internally trimmed reference with undervoltage lockout
• High current totem pole output
• Undervoltage lockout with hysteresis
• Low start-up and operating current
• Hermetic package
• 50 and 100 krad (Si)
• SEL free @ 120 MeV/cm2/mg at 125°C