isl88731 Intersil Corporation, isl88731 Datasheet - Page 7
isl88731
Manufacturer Part Number
isl88731
Description
Smbus Level 2 Battery Charger
Manufacturer
Intersil Corporation
Datasheet
1.ISL88731.pdf
(22 pages)
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Typical Operating Performance
FIGURE 9. SWITCHING WAVEFORMS AT DIODE EMULATION
FIGURE 13. LOAD TRANSIENT RESPONSE
FIGURE 11. BATTERY REMOVAL
PHASE
ADAPTER
CURRENT
7
UGATE
CSON/
V BATTERY
BATTERY
CURRENT
INDUCTOR
CURRENT
BATTERY
VOLTAGE
CHARGE
CURRENT
DCIN = 20V, 3S2P Li-Battery, T
LGATE
SYSTEM
LOAD
ISL88731
100
FIGURE 14. EFFICIENCY vs CHARGE CURRENT AND
95
90
85
80
75
70
0
FIGURE 10. SWITCHING WAVEFORMS IN CC MODE
BATTERY
CURRENT
A
= +25°C, unless otherwise noted. (Continued)
BATTERY VOLTAGE (EFFICIENCY DCIN = 20V)
FIGURE 12. BATTERY INSERTION
PHASE
8.4V BATTERY
2
12.6V BATTERY
4.2V BATTERY
CHARGE CURRENT (A)
UGATE
16.8V BATTERY
INDUCTOR
CURRENT
4
LGATE
CSON/
V BATTERY
6
November 20, 2006
FN9258.0
8