ISL6273 Datasheet, PDF (4/12 Pages) Intersil Corporation – 1.2A Low Quiescent Current 1.5MHz High Efficiency Synchronous Buck Regulator

Typical Operating Performance
ISL6273
100
V_O = 2.8V
90
V_O = 1.2V
V_O = 2.5V
80
70
60
50
40
0.1
1
10
100
LOAD CURRENT (mA)
1000
FIGURE 1. EFFICIENY vs LOAD CURRENT (V_IN = 3.6V)
3.37
3.36
3.35
3.34
3.33
V_IN = 3.6V
3.32
3.31
3.3
0.1
1
10
100
LOAD CURRENT (mA)
1000
FIGURE 2. V_OUT vs LOAD CURRENT (V_IN = 3.6V)
100
90
80
V_IN = 2.7V
70
60
50
40
0.1
1
10
100
LOAD CURRENT (mA)
1000
FIGURE 3. EFFICIENCY vs LOAD CURRENT (V_O = 1.8V)
1.84
1.82
1.8
V_IN = 2.7V
1.78
1.76
1.74
0.1
1
10
100
LOAD CURRENT (mA)
1000
FIGURE 4. V_OUT vs LOAD CURRENT (V_IN = 2.7V)
0.07
INPUT CURRENT IN PFM MODE OF 2.8V
0.06
0.05
0.04
0.03
0.02
0.01
0
2.9
3.4
3.9
4.4
4.9
5.4
V_IN VOLTAGE RANGE (2.9V-5.5V)
FIGURE 5. I_Q vs V_IN (PFM)
4
7
INPUT CURRENT IN PWM MODE OF 2.8V
6
5
4
3
2
1
0
2.9
3.4
3.9
4.4
4.9
5.4
V_IN VOLTAGE RANGE (2.9V-5.5V)
FIGURE 6. I_Q vs V_IN (PWM)
FN9256.0
March 7, 2006