ISL6257 Datasheet, PDF (5/22 Pages) Intersil Corporation – Highly Integrated Narrow VDC Battery Charger for Notebook Computers

ISL6257
Electrical Specifications
DCIN = CSIP = CSIN = 18V, CSOP = CSON = 12V, ACSET = DCSET = 1.5V, ACLIM = VREF,
VADJ = Floating, EN = VDD = 5V, BOOT - PHASE = 5.0V, GND = PGND = 0V, C_VDD = 1µF, I_VDD = 0mA,
T_A = -10°C to +100°C, T_J ≤ +125°C, unless otherwise noted. (Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
DCPRN Sink Current
DCPRN = 0.4V
3
8
11
mA
DCPRN Leakage Current
DCPRN = 5V
-0.5
0.5
µA
CSON to GND resistance
CSON = 12.6V
315
380
485
kΩ
Thermal Shutdown Temperature
150
°C
Thermal Shutdown Temperature Hysteresis
25
°C
NOTE:
4. This is the sum of currents in these pins (CSIP, CSIN, BGATE, BOOT, UGATE, PHASE, CSOP, CSON) all tied to 16.8V. No current in pins EN,
ACSET, DCSET, VADJ, CELLS, ACLIM, CHLIM.
Typical Operating Performance DCIN = 20V, 4S2P Li-Battery, T_A = +25°C, unless otherwise noted.
0.6
0.10
0.08
0.3
0.06
0.0
0.04
-0.3
0.02
-0.6
0
5
10
15
20
40
LOAD CURRENT (mA)
FIGURE 1. VDD LOAD REGULATION
0.00
0
100
200
300
400
LOAD CURRENT (μA)
FIGURE 2. VREF LOAD REGULATION
10
9
8
7
6
5
4
3
2
1
0
0
10 20 30 40 50 60 70 80 90 100
CSIP-CSIN (mV)
FIGURE 3. ACCURACY vs AC ADAPTER CURRENT
100
96
92
VCSON = 8.4V
2 CELLS
88
VCSON = 12.6V
3 CELLS
84
VCSON = 16.8V
4 CELLS
80
76
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
LOAD CURRENT (A)
FIGURE 4. SYSTEM EFFICIENCY vs CHARGE CURRENT
5
FN9288.2
January 17, 2007