isl88731 Intersil Corporation, isl88731 Datasheet - Page 6

• Manufacturer Part Number: isl88731
• Description: Smbus Level 2 Battery Charger
• Manufacturer: Intersil Corporation

Typical Operating Performance
5.15
5.10
5.05
5.00
4.95
4.90
4.85
-10%
-15%
FIGURE 5. ICM ACCURACY vs AC ADAPTER CURRENT
15%
10%
-5%
5%
0%
0
1
FIGURE 3. VDD LOAD REGULATION
2
20
FIGURE 7. CHARGE ENABLE
CURRENT
CHARGE
VDDP LOAD CURRENT (mA)
3
ADAPTER CURRENT (A)
40
4
6
5
60
6
80
INDUCTOR
CURRENT
7
DCIN = 20V, 3S2P Li-Battery, T
VCOMP
ICOMP
100
8
ISL88731
FIGURE 6. TYPICAL CHARGING VOLTAGE AND CURRENT
3.23
3.22
3.21
3.20
3.19
3.18
3.17
13.0
12.5
12.0
11.5
11.0
10.5
10.0
0
0
A
= +25°C, unless otherwise noted.
FIGURE 4. VREF LOAD REGULATION
20
FIGURE 8. CHARGE DISABLE
VCOMP
INDUCTOR
CURRENT
ICOMP
ICHG (A)
50
40
TIME (MINUTES)
60
I VREF (µA)
100
80
100
VCHG (V)
CURRENT
CHARGE
150
120
140
November 20, 2006
200
160
1.0%
0.5%
0.0%
-0.5%
-1.0%
FN9258.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0