| Barracuda 9LP Installation Guide, Rev. E | 17 | 
Table 2a. DC power requirements (Amps), single-ended 
| 
 | 
 | 
 | ST39173N/W/WC | ST34573N/W/WC | ||
| Voltage | +5V | +12V | +5V | +12V | ||
| Regulation [5] | ±5% | ±5%[2] | ±5% | ±5%[2] | ||
| Max. operating current | 
 | 
 | 
 | 
 | ||
| DC [1] | 1.15 | 0.95 | 1.15 | 0.95 | ||
| Avg. idle current | 
 | 
 | 
 | 
 | ||
| 
 | 
 | [1] | 0.75 | 0.5 | 0.75 | 0.5 | 
| DCX | ||||||
| Max. starting current | 
 | 
 | 
 | 
 | ||
| (peak DC) [3] | 1.2 | 1.7 | 1.2 | 1.7 | ||
| (peak AC) [3] | — | 2.9 | — | 2.9 | ||
| Delayed motor | 
 | 
 | 
 | 
 | ||
| start (max) [1][4] | 0.65 | 0.06 | 0.65 | 0.06 | ||
| Peak operating current | 
 | 
 | 
 | 
 | ||
| Typical DCX [1][6] | 1.05 | 0.9 | 1.05 | 0.9 | ||
| Maximum DC [1] | 1.15 | 0.95 | 1.15 | 0.95 | ||
| Maximum (peak) | 1.7 | 2.4 | 1.7 | 2.4 | ||
Notes for this table follows Table 2c.
