XRP7713
Three Channel Digital PWM Step Down Controller
TYPICAL PERFORMANCE CHARACTERISTICS
All data taken at T
J
= T
A
= 25°C, unless otherwise specified - Schematic and BOM from Application Information section of
this datasheet.
Fig. 4: 12Vin Efficiency: Single Channel
300kHz - Channels not in use are disabled
FET: Si4944; Inductor: 744314xxx 7x7x5mm
100%
Fig. 4: 12Vin Efficiency: Single Channel
300kHz - Channels not in use are disabled
FET: FDS8984; Inductor: 744310200 7x7x3mm
2.5V
90%
1.8V
1.2V
1.0V
Efficiancy
80%
70%
60%
50%
0
1
2
3
4
5
Output Current (Amps)
Fig. 5: 5Vin Efficiency: Single Channel
300kHz - Channels not in use are disabled
FET: Si4944; Inductor: 744314xxx 7x7x5mm
Fig. 6: 5Vin Efficiency: Single Channel
300kHz - Channels not in use are disabled
FET: FDS8984; Inductor: 744314xxx 7x7x3mm
Fig. 7: Combined Efficiency: 3V3 1V8 & 1V0
300 kHz FET: FDS8984; Inductor: 744314xxx 7x7x3mm
Fig. 8: 12Vin Efficiency: Single Channel
1MHz - Channels not in use are disabled
FET: FDS8984; Inductor:744310200 7x7x3mm
© 2010 Exar Corporation
8/29
Rev. 1.1.1
EXAR [ EXAR CORPORATION ]
