ISL6253 Datasheet, PDF (6/22 Pages) Intersil Corporation – Highly Integrated Battery Charger for Notebook Computers

ISL6253
Typical Operating Performance
Circuit of Figure 18, VDCIN = 20V, 4S2P Li-Ion Battery, T_A = 25°C, unless otherwise noted.
0.1
0.01
VDCIN = 20V
0
VDD = 5.075V
EN = 0
0
-0.1
VDD =5.075V
IVDD = 0mA
-0.2
-0.01
-0.3
-0.4
-0.02
-0.5
-0.03
-0.6
-0.7
0
5
10
15
20
25
30
LOAD CURRENT (mA)
FIGURE 1. VDD LOAD REGULATION
-0.04
5
10
15
20
25
INPUT VOLTAGE VDCIN (V)
FIGURE 2. VDD LINE REGULATION
5.0
17.0
4.0
16.0
3.0
15.0
2.0
14.0
1.0
13.0
0.0
12.0
0
26
50
75
99
TIME (MINUTE)
FIGURE 3. BATTERY CHARGE V-I CHARACTERISTICS
INDUCTOR
CURRENT
1A/DIV
VDCIN
10V/DIV
BATTERY
VOLTAGE
10V/DIV
CHARGE
CURRENT
1A/DIV
t: 10ms/DIV
CHARGE CURRENT: 2.6A
INPUT VOLTAGE STEP: 18.0V TO 25V
LOAD CURRENT: 1A
FIGURE 5. LINE TRANSIENT RESPONSE
6
LOAD
CURRENT
5A/DIV
ADAPTER
CURRENT
5A/DIV
CHARGE
CURRENT
2A/DIV
BATTERY
VOLTAGE
2V/DIV
t: 1ms/DIV, CHLIM = ACLIM = VREF
LOAD STEP: 0A TO 4A
CHARGE CURRENT = 3A
AC ADAPTER CURRENT LIMIT = 5A
FIGURE 4. LOAD TRANSIENT RESPONSE
5
EN=0
0
-5
-10
-15
-20
0
1
2
3
4
5
AC ADAPTER CURRENT (A)
FIGURE 6. ICM ACCURACY vs AC ADAPTER CURRENT