ISL88731C
Typical Operating Performance DCIN = 20V, 3S2P Li-Battery, T = +25°C, unless otherwise
A
noted. (Continued)
UGATE
UGATE
LGATE
INDUCTOR
CURRENT
LGATE
PHASE
INDUCTOR
CURRENT
PHASE
FIGURE 12. SWITCHING WAVEFORMS IN CC MODE
FIGURE 11. SWITCHING WAVEFORMS AT DIODE
EMULATION
CSON/
V BATTERY
CSON/
V BATTERY
BATTERY
CURRENT
BATTERY
CURRENT
FIGURE 13. BATTERY REMOVAL
FIGURE 14. BATTERY INSERTION
100
95
SYSTEM
LOAD
BATTERY
VOLTAGE
16.8V BATTERY
90
12.6V BATTERY
CHARGE
CURRENT
8.4V BATTERY
85
ADAPTER
CURRENT
4.2V BATTERY
80
0.0
1.0
2.0
3.0
4.0
(A)
5.0
6.0
7.0
8.0
I
OUT
FIGURE 16. EFFICIENCY vs CHARGE CURRENT AND
BATTERY VOLTAGE
FIGURE 15. LOAD TRANSIENT RESPONSE
FN6978.0
March 8, 2010
10
INTERSIL [ Intersil ]
