ISL6256_14 Datasheet, PDF (7/26 Pages) Intersil Corporation – Highly Integrated Battery Charger with Automatic Power Source Selector for Notebook Computers

ISL6256, ISL6256A
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. Boldface limits apply over the
operating temperature range, -10°C to +100°C. (Continued)
PARAMETER
TEST CONDITIONS
MIN
MAX
(Note 8)
TYP
(Note 8)
UNITS
ACSET Input Bias Current
ACSET ≥ 1.26V
2.4
3.4
4.4
µA
ACSET Input Bias Current
ACSET < 1.26V
-1
0
1
µA
DCSET Threshold
1.24
1.26
1.28
V
DCSET Input Bias Current Hysteresis
2.4
3.4
4.4
µA
DCSET Input Bias Current
DCSET ≥ 1.26V
2.4
3.4
4.4
µA
DCSET Input Bias Current
DCSET < 1.26V
-1
0
1
µA
OSCILLATOR
Frequency
245
300
355
kHz
PWM Ramp Voltage (peak-to-peak)
CSIP = 18V
1.6
V
CSIP = 11V
1
V
SYNCHRONOUS BUCK REGULATOR
Maximum Duty Cycle
97
99
99.6
%
UGATE Pull-up Resistance
BOOT-PHASE = 5V, 500mA source current
1.8
3.0
Ω
UGATE Source Current
BOOT-PHASE = 5V, BOOT-UGATE = 2.5V
1.0
A
UGATE Pull-down Resistance
BOOT-PHASE = 5V, 500mA sink current
1.0
1.8
Ω
UGATE Sink Current
BOOT-PHASE = 5V, UGATE-PHASE = 2.5V
1.8
A
LGATE Pull-up Resistance
VDDP-PGND = 5V, 500mA source current
1.8
3.0
Ω
LGATE Source Current
VDDP-PGND = 5V, VDDP-LGATE = 2.5V
1.0
A
LGATE Pull-down Resistance
VDDP-PGND = 5V, 500mA sink current
1.0
1.8
Ω
LGATE Sink Current
VDDP-PGND = 5V, LGATE = 2.5V
1.8
A
Dead Time
Falling UGATE to rising LGATE or
10
falling LGATE to rising UGATE
30
ns
CHARGING CURRENT SENSING AMPLIFIER
Input Common-Mode Range
0
18
V
Input Bias Current at CSOP
5 < CSOP < 18V
0.25
2
µA
Input Bias Current at CSON
5 < CSON < 18V
75
100
µA
CHLIM Input Voltage Range
0
3.6
V
ISL6256
CSOP to CSON Full-Scale Current Sense
Voltage
ISL6256: CHLIM = 3.3V
ISL6256: CHLIM = 2.0V
ISL6256: CHLIM = 0.2V
160
165
170
mV
95
100
105
mV
5.0
10
15.0
mV
ISL6256A
CSOP to CSON Full-Scale Current Sense
Voltage
ISL6256A: CHLIM = 3.3V
ISL6256A: CHLIM = 2.0V
ISL6256A: CHLIM = 0.2V
161.7
165
168.3
mV
97
100
103
mV
7.5
10
12.5
mV
ISL6256 CSOP to CSON Full-Scale
Current Sense Voltage Formula
Charge current limit mode
0.2V < CHLIM < 3.3V
CHLIM*50
-5
CHLIM*50
mV
+5
ISL6256A CSOP to CSON Full-Scale
Current Sense Voltage Formula
Charge current limit mode
0.2V < CHLIM < 3.3V
CHLIM*49.72
-2.4
CHLIM*50.28 mV
+2.4
CHLIM Input Bias Current
CHLIM = GND or 3.3V, DCIN = 0V
-1
1
µA
7
FN6499.3
September 14, 2010