ACT8810
Active- Semi
Rev 4, 01-Oct-09
STEP-DOWN DC/DC CONVERTERS
TYPICAL PERFORMANCE CHARACTERISTICS
(ACT8810QJ343, VVP1 = VVP2 = 3.6V, L = 3.3µH, CVP1 = CVP2 = 4.7μF, COUT1 = 22µF, COUT2 = 10μF, TA = 25°C, unless otherwise specified.)
REG1 Efficiency vs. Load Current
REG2 Efficiency vs. Load Current
100
80
100
80
VVSYS = 3.6V
VVSYS = 3.6V
VVSYS = 5.2V
VVSYS = 4.6V
VVSYS = 5.2V
VVSYS = 4.2V
60
60
VVSYS = 4.6V
VVSYS = 4.2V
40
40
20
0
20
VOUT1 = 3.3V
VOUT2 = 1.2V
1000
0
200
1
10
100
2
20
2000
Load Current (mA)
Load Current (mA)
OUT2 Regulation Voltage vs. Temperature
OUT1 Regulation Voltage vs. Temperature
3.318
3.315
3.312
3.309
3.306
3.303
3.300
3.297
3.294
3.291
3.288
1.212
1.208
1.204
1.200
1.196
IOUT1 = 35mA
IOUT2 = 35mA
1.192
1.188
3.285
3.282
85
-40
-20
0
20
40
60
85
-40
-20
0
20
40
60
Temperature (°C)
Temperature (°C)
REG1 RDSON vs. VP1 Input Voltage
REG2 RDSON vs. VP2 Input Voltage
0.18
0.16
0.14
0.12
0.10
0.5
0.4
0.3
PMOS
NMOS
PMOS
0.08
0.06
0.2
0.1
0
NMOS
0.04
0.02
0
3.5
4.0
4.5
5.0
5.5
6.0
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
VP2 Input Voltage (V)
VP1 Input Voltage (V)
Innovative PowerTM
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