isl88731a Intersil Corporation, isl88731a Datasheet - Page 7

• Manufacturer Part Number: isl88731a
• Description: Smbus Level 2 Battery Charger
• Manufacturer: Intersil Corporation

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
ISL88731A
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 DC
FIGURE 12. BATTERY INSERTION
PHASE
8.4V
2
12.6V
4.2V
BATTERY
CHARGE CURRENT (A)
BATTERY
BATTERY
UGATE
16.8V
INDUCTOR
CURRENT
BATTERY
4
LGATE
CSON/
V
BATTERY
6
IN
January 7, 2009
= 20V)
FN6738.1
8