isl6252a Intersil Corporation, isl6252a Datasheet - Page 9

• Manufacturer Part Number: isl6252a
• Description: Highly Integrated Battery Charger Controller For Notebook Computers
• Manufacturer: Intersil Corporation

Typical Operating Performance
FIGURE 6. ACCURACY vs AC ADAPTER CURRENT
10
-0.3
-0.6
0.6
0.3
0.0
9
8
7
6
5
4
3
2
1
0
0
FIGURE 8. AC AND DC ADAPTER DETECTION
0
10
FIGURE 4. VDD LOAD REGULATION
20
5
30
LOAD CURRENT (mA)
40
CSIP-CSIN (mV)
10
9
50
60
15
70
80
20
DCIN = 20V, 4S2P Li-Battery, T
ACSET
ACSET
1V/div
1V/div
DCSET
DCSET
1V/div
1V/div
90
DCIN
DCIN
10V/div
10V/div
DCPRN
DCPRN
5V/div
5V/div
ACPRN
ACPRN
5V/div
5V/div
ISL6252, ISL6252A
100
40
FIGURE 7. SYSTEM EFFICIENCY vs CHARGE CURRENT
0.02
0.10
0.08
0.06
0.04
0.00
100
A
96
92
88
84
80
76
= +25°C, Unless Otherwise Noted.
0
0
FIGURE 9. LOAD TRANSIENT RESPONSE
LOAD STEP: 0A TO 4A
LOAD STEP: 0-4A
CHARGE CURRENT: 3A
CHARGE CURRENT: 3A
AC ADAPTER CURRENT LIMIT: 5.15A
AC ADAPTER CURRENT LIMIT: 5.15A
FIGURE 5. VREF LOAD REGULATION
0.5
100
VCSON = 16.8V
1.0
4 CELLS
LOAD CURRENT (μA)
LOAD CURRENT (A)
1.5
VCSON = 12.6V
3 CELLS
2.0
200
2.5
VCSON = 8.4V
2 CELLS
3.0
300
3.5
BATTERY
VOLTAGE
2V/div
CHARGE
CURRENT
2A/div
ADAPTER
CURRENT
5A/div
LOAD
CURRENT
5A/div
July 19, 2007
FN6498.1
4.0
400