ISL6273 Datasheet, PDF (5/12 Pages) Intersil Corporation – 1.2A Low Quiescent Current 1.5MHz High Efficiency Synchronous Buck Regulator

ISL6273
Typical Operating Performance (Continued)
1.605
1.6
1.595
1.59
1.585
1.58
1.575
1.57
2.7
3.2
3.7
4.2
4.7
5.2
V_IN (V)
FIGURE 7. SWITCHING FREQUENCY vs V_IN
1.61
1.608
1.606
1.604
1.602
1.6
2.7
3.7
4.7
V_IN (V)
FIGURE 8. LINE REGULATION (I_O = 1A)
1.61
1.605
1.6
1.595
1.59
0
200
400
600
800
1000
I_O (mA)
FIGURE 9. LOAD REGULATION (V_IN = 3.6V IN PWM MODE)
FIGURE 10. SOFT-START
FIGURE 11. PFM MODE (V_IN = 3V; V_O = 1.6V; I_O = 50mA)
5
FIGURE 12. STEADY-STATE IN PWM MODE (V_IN = 3.6V;
V_O = 1.6V; I_O = 1A)
FN9256.0
March 7, 2006