| Part Number | Status | No. of Outputs | Frequency(Max)(kHz) | A/D Channels | Analog Comparators | Communications | Compensator | DPWM Resolution(ps) | GPIOs | No. of Digital Power Peripheral feedback loops | Non-Volatile Memory | Processor | Rating |
| UCD3138RGC | ACTIVE | 8 | 2000 | 14 | 7 | 1 PMBUS, 2 UART | 2-pole/2-zero (PID hardware) | 250 | 30 | 3 | 32kB (Program), 2kB (Data) | 31.25MHz, 32-bit ARM7 | Catalog |
| UCD3138RMH | ACTIVE | 8 | 2000 | 7 | 6 | 1 PMBUS, 1 UART | 2-pole/2-zero (PID hardware) | 250 | 18 | 3 | 32kB (Program), 2kB (Data) | 31.25MHz, 32-bit ARM7 | Catalog |
| UCD3138RHA | ACTIVE | 8 | 2000 | 7 | 6 | 1 PMBUS, 1 UART | 2-pole/2-zero (PID hardware) | 250 | 18 | 3 | 32kB (Program), 2kB (Data) | 31.25MHz, 32-bit ARM7 | Catalog |
