SP6659_06 Datasheet, PDF (4/11 Pages) Sipex Corporation – 1.5MHz, 600mA Synchronous Buck Regulator

TYPICAL PERFORMANCE CHARACTERISTICS
Refer to the typical application schematic, V_OUT = 1.8V, T_AMB= +27°C
100
1.8Vout Efficiency Vs Output
90
80
1.830
1.820
1.8Vout Load Regulation
Vin=4.2V
Vin=3.3V
Vin=2.7V
70
1.810
60
50
40
1
10
100
Output Current (mA)
Vin=2.7V
Vin=3.3V
Vin=4.2 V
1000
Figure 7: Efficiency Vs. Load Current, Vout =1.8V
1.800
1.790
0
100 200 300 400 500 600 700
Output Current (mA)
Figure 8: Load Regulation Vout =1.8V
100
95
90
85
80
75
70
65
60
55
50
2
1.8Vout Efficiency vs Input voltage
Iout=600mA
Iout=100mA
Iout=10mA
3
4
5
6
Input Voltage (V)
Figure 9: 1.8Vout Efficiency vs. Input Voltage
1.850
1.840
1.830
1.820
1.810
1.800
1.790
1.780
1.770
1.760
1.750
0
Output Voltage vs Load Current
Vin=3.3V
200 400 600 800 1000 1200
Load Current (mA)
Figure 10: Output Voltage vs. Load Current
Supply Current vs Supply Voltage
400
380
360
340
320
300
280
260
240
Vo=1.8V
Iload=0A
220
200
2
3
4
5
6
Input Voltage (V)
Figure 11: Supply Current vs. Supply Voltage
Oscillator Frequency vs Supply Voltage
1.6
1.5
1.4
1.3
Vo=1.8V
Iload=600mA
1.2
2
3
4
5
6
Input Voltage (V)
Figure 12: Oscillator Frequency vs. Supply Voltage
Date: 9/25/06 Rev C
SP6659 1.5MHz, 600mA Synchronous Buck Regulator
4
© 2006 Sipex Corporation