dc2116a-a DC2116A-A LTC4234 Demo Board | 20A Guaranteed SOA Hot Swap Controller DC2116A-A Demonstration circuit 2116A features the LTC4233/LTC4234 10A/20A Guaranteed SOA Hot Swap™ Controllers. The LTC4233 and LTC4234 are ideally suited for compact power distribution control in 2.9V to 15V applications for hot board insertion protection, high side power switching, and electronic circuit breaker functions.