ISL62381 Datasheet, PDF (4/23 Pages) Intersil Corporation – High-Efficiency, Quad or Triple-Output System Power Supply Controller for Notebook Computers

ISL62381, ISL62382, ISL62383
Electrical Specifications
These specifications apply for T_A = -10°C to +100°C, unless otherwise noted. Typical values are at T_A = +25°C,
VIN = 12V; Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified.
Temperature limits established by characterization and are not production tested (Continued)
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
VCC
VCC Input Bias Current (Note 3)
EN1 = EN2 = VCC1, FB1 = FB2 = 0.65V
-
2
-
mA
VCC2 POR Threshold
Rising edge
4.35
4.45
4.55
V
Falling edge
4.10
4.20
4.30
V
PWM
Reference Voltage (Note 3)
-
0.6
-
V
Regulation Accuracy
VOUT regulated to 0.6V
-1
-
1
%
FB Input Bias Current
FB = 0.6V
-10
-
30
nA
Frequency Range
200
-
600
kHz
Frequency Set Accuracy (Note 4)
VOUT Voltage Regulation Range
F_SW = 300kHz
VIN > 6V for VOUT = 5.5V
-12
-
12
%
0.6
-
5.5
V
VOUT Soft-Discharge Resistance
-
14
50
Ω
POWER-GOOD
PGOOD Pull-Down Impedance
PGOOD Leakage Current
Soft-start, I_{_PGOOD} = 5mA sinking
UVP, I_{_PGOOD} = 5mA sinking
OVP, I_{_PGOOD} = 5mA sinking
OCP, I_{_PGOOD} = 5mA sinking
PGOOD = VCC1
-
32
100
Ω
-
95
200
Ω
-
63
150
Ω
-
32
100
Ω
-
0
1
µA
Maximum PGOOD Sink Current (Note 3)
-
5
-
mA
PGOOD Soft-start Delay
From EN high to PGOOD high (for one SMPS
2.20
2.75
3.70
ms
channel)
EN2(1) = Floating, from EN1(2) high to
PGOOD2(1) high
4.50
5.60
7.50
ms
GATE DRIVER
UGATE Pull-Up ON-Resistance (Note 3)
200mA source current
-
1.0
1.5
Ω
UGATE Source Current (Note 3)
UGATE-PHASE = 2.5V
-
2.0
-
A
UGATE Pull-Down ON-Resistance (Note 3)
250mA source current
-
1.0
1.5
Ω
UGATE Sink Current (Note 3)
UGATE-PHASE = 2.5V
-
2.0
-
A
LGATE Pull-Up ON-Resistance (Note3)
250mA source current
-
1.0
1.5
Ω
LGATE Source Current (Note3)
LGATE-PGND = 2.5V
-
2.0
-
A
LGATE Pull-Down ON-Resistance (Note 3)
250mA source current
-
0.5
0.9
Ω
LGATE Sink Current (Note 3)
LGATE-PGND = 2.5V
-
4.0
-
A
UGATE to LGATE Deadtime (Note 3)
UG falling to LG rising, no load
-
21
-
ns
LGATE to UGATE Deadtime (Note 3)
LG falling to UG rising, no load
-
21
-
ns
Bootstrap Diode Forward Voltage (Note 3)
2mA forward diode current
-
0.58
-
V
Bootstrap Diode Reverse Leakage Current
V_R = 25V
-
0.2
1
µA
4
FN6665.4
August 7, 2008