ISL6237 Datasheet, PDF (3/35 Pages) Intersil Corporation – High-Efficiency, Quad-Output, Main Power Supply Controllers for Notebook Computers

ISL6237
Absolute Voltage Ratings
VIN, EN_LDO to GND . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +27V
BOOT_ to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +33V
BOOT_ to PHASE_ . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
VCC, EN_, SKIP, TON,
PVCC, POK_ to GND . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
LDO, FB1, REFIN2, LDOREFIN to GND . . . -0.3V to (VCC + 0.3V)
OUT_, REF to GND . . . . . . . . . . . . . . . . . . . . -0.3V to (VCC + 0.3V
UGATE_ to PHASE_ . . . . . . . . . . . . . . . . . . -0.3V to (PVCC + 0.3V)
ILIM_ to GND . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (VCC + 0.3V)
LGATE_, BYP to GND . . . . . . . . . . . . . . . . . -0.3V to (PVCC + 0.3V)
PGND to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to + 0.3V
LDO, REF Short Circuit to GND . . . . . . . . . . . . . . . . . . . Continuous
VCC Short Circuit to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1s
LDO Current (Internal Regulator) Continuous . . . . . . . . . . . . 100mA
LDO Current (Switched Over to OUT1) Continuous . . . . . . +200mA
Thermal Information
Thermal Resistance (Typical)
θ_JA (°C/W) θ_JC (°CW)
32 Ld QFN (Notes 1, 2) . . . . . . . . . . . .
32
3.0
Operating Temperature Range . . . . . . . . . . . . . . . .-40°C to +100°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Storage Temperature Range . . . . . . . . . . . . . . . . . .-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.
NOTES:
1. θ_JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
2. For θ_JC, the “case temp” location is the center of the exposed metal pad on the package underside.
3. Limits established by characterization and are not production tested.
4. Parts are 100% tested at +25°C. Temperature limits established by characterization and are not production tested.
Electrical Specifications
PARAMETER
No load on LDO, OUT1, OUT2, and REF, V_IN = 12V, EN2 = EN1 = VCC, VBYP = 5V, PVCC = 5V,
V_{EN_LDO} = 5V, T_A = -40°C to +100°C, unless otherwise noted. Typical values are at T_A = +25°C.
CONDITIONS
MIN
(Note 4)
TYP
MAX
(Note 4) UNITS
MAIN SMPS CONTROLLERS
VIN Input Voltage Range
LDO in regulation
5.5
25
V
3.3V Output Voltage in Fixed Mode
1.05V Output Voltage in Fixed Mode
V_IN = LDO, V_OUT1 < 4.43V
V_IN = 5.5V to 25V, REFIN2 > (VCC - 1V), SKIP = 5V
V_IN= 5.5V to 25V, 3.0 < REFIN2 < (VCC - 1.1V),
SKIP = 5V
4.5
5.5
V
3.285 3.330 3.375
V
1.038
1.05
1.062
V
1.5V Output Voltage in Fixed Mode
5V Output Voltage in Fixed Mode
FB1 in Output Adjustable Mode
REFIN2 in Output Adjustable Mode
SMPS1 Output Voltage Adjust Range
V_IN = 5.5V to 25V, FB1 = VCC, SKIP = 5V
V_IN = 5.5V to 25V, FB1 = GND, SKIP = 5V
V_IN = 5.5V to 25V
V_IN = 5.5V to 25V
SMPS1
1.482 1.500 1.518
V
4.975 5.050 5.125
V
0.693 0.700 0.707
V
0.7
2.50
V
0.70
5.50
V
SMPS2 Output Voltage Adjust Range
SMPS2
0.50
2.50
V
SMPS2 Output Voltage Accuracy
(Referred for REFIN2)
REFIN2 = 0.7V to 2.5V, SKIP = VCC
-1.0
1.0
%
DC Load Regulation
Either SMPS, SKIP = VCC, 0 to 5A
-0.1
%
Either SMPS, SKIP = REF, 0 to 5A
-1.7
%
Either SMPS, SKIP = GND, 0 to 5A
-1.5
%
Line Regulation
Current-Limit Current Source
Either SMPS, 6V < V_IN < 24V
Temperature = +25°C
0.005
%/V
4.75
5
5.25
µA
ILIM_ Adjustment Range
0.2
2
V
Current-Limit Threshold (Positive, Default) ILIM_ = VCC, GND - PHASE_
(No temperature compensation)
93
100
107
mV
3
FN6418.4
March 18, 2008