ISL6232 Datasheet, PDF (3/25 Pages) Intersil Corporation – High Efficiency System Power Supply Controller for Notebook Computers

ISL6232
Absolute Maximum Ratings
SHDN#, VIN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +28V
BOOT3, BOOT5 to GND . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +33V
VCC, LDO3, LDO5, CS3, CS5, OUT3, OUT5, COMP3, COMP5,
FB3, FB5, SKIP#, FREQ, PGOOD, EN3, EN5, REF
to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
BOOT3 to PHASE3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
BOOT5 to PHASE5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
UGATE3 to PHASE3 . . . . . . . . . . . . . . . . . -0.3V to (BOOT3 + 0.3V)
UGATE5 to PHASE5 . . . . . . . . . . . . . . . . . -0.3V to (BOOT5 + 0.3V)
LGATE3 to GND . . . . . . . . . . . . . . . . . . . . . -0.3V to (LDO5 + 0.3V)
LGATE5 to PGND . . . . . . . . . . . . . . . . . . . . -0.3V to (LDO5 + 0.3V)
PHASE3 to PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-1V to 28V
PHASE5 to PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -1V to 28V
PGND to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 0.3V
Thermal Information
Thermal Resistance
θ_JA (°C/W)
28 Lead QSOP Package (Note 1) . . . . . . . . . . . . . .
77
Junction Temperature Range. . . . . . . . . . . . . . . . . .-55°C to +150°C
Operating Temperature Range . . . . . . . . . . . . . . . -10°C to +100°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
NOTE:
1. θ_JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
Electrical Specifications
VIN = 12V, SHDN# = EN3 = EN5 = VCC, SKIP# = FB3 = FB5 = 0V, I_LDO5 = 0mA, I_LDO3 = 0mA, C_REF = 0.22µF,
C_LDO3 = C_LDO5 = 4.7µF, T_A = -10°C to +100°C (Note 2). 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.
PARAMETER
TEST CONDITIONS
MIN
TYP MAX UNITS
SMPS CONTROLLER
VIN Voltage Range
(Note 3)
5.5
25
V
3.3V Fixed Output Voltage
VIN = 5.5V to 25V, FB3 = 0V, SKIP# = VCC
3.250 3.300 3.350
V
5.0V Fixed Output Voltage
VIN = 5.5V to 25V, FB5 = 0V, SKIP# = VCC
5.023 5.100 5.177
V
FB3/FB5 at Programmable Mode
VIN = 5.5V to 25V, SKIP# = VCC
0.788 0.800 0.812
V
FB3/FB5 Programmable Mode Threshold
Voltage
0.1
0.2
0.3
V
OUT3/OUT5 Voltage Range at Programmable (Note 3)
Mode
0.8
5.5
V
Line Regulation
VIN = 5.5V to 25V @ OUT3
VIN = 5.5V to 25V @ OUT5
0.005
%/V
SKIP# = VCC, IOUT = 0A to 5A
-0.1
Load Regulation
SKIP# = 0V, IOUT = 0A to 5A
-0.5
%
SKIP# = REF, IOUT = 0A to 5A
-0.5
OUT3/OUT5 Input Leakage Current
LDO5 = OUT = 5.5V, EN3 = EN5 = 0V
0.1
1
µA
CS3/CS5 Input Leakage Current
LDO5 = CS = 5.5V, EN3 = EN5 = 0V
0.1
1
µA
FB3/FB5 Input Bias Current
FB = 0.75V
0.01
0.1
µA
COMP3/COMP5 Trans-Conductance
COMP = 2.5V
50
100
150
µs
Positive Current Limit Threshold
CS-OUT
64
80
96
mV
Pulse Skipping Current Threshold
CS-OUT
3
13
26
mV
Zero Crossing Current Threshold
CS-OUT
6
mV
Negative Current Limit Threshold
CS-OUT
-20
mV
Operating Frequency
VIN = 5.5V to 25V
255
300
345
kHz
Maximum Duty Cycle
94
%
OUT3/OUT5 Soft-Start Period
EN = VCC
1.0
1.2
1.4
ms
3
FN9116.1
April 20, 2009