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ISL65426 Datasheet(PDF) 7 Page - Intersil Corporation

Part No. ISL65426
Description  6A Dual Synchronous Buck Regulator with Integrated MOSFETs
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Maker  INTERSIL [Intersil Corporation]
Homepage  http://www.intersil.com/cda/home
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ISL65426 Datasheet(HTML) 7 Page - Intersil Corporation

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7
FN6340.2
February 21, 2007
Absolute Maximum Ratings
Thermal Information
VCC, PVINx, LXx . . . . . . . . . . . . . . . . . . . . . . . . . GND -0.3V to +6V
FBx, ENx, VxSETx, ISETx, PGOODx . . . . . . . . -0.3V to VCC+0.3V
ESD Classification
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2kV
Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200V
Recommended Operating Input Range
VCC, PVINx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.375V to +5.5V
Thermal Resistance
θJA (°C/W) θJC (°C/W)
QFN Package (Notes 1, 2). . . . . . . . . .
23
2.5
Maximum Junction Temperature (Plastic Package) . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . . -65°C to +150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . +260°C
Ambient Temperature Range (ISL65426HRZ). . . . . -10°C to +100°C
Ambient Temperature Range (ISL65426IRZA) . . . . . -40°C to +85°C
Operating Junction Temperature Range . . . . . . . . . -10°C to +125°C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
150°C max junction temperature is intended for short periods of time to prevent shortening the lifetime. Operation close to 150°C junction may trigger the shutdown of
the device even before 150°C, since this number is specified as typical.
NOTES:
1.
θJA 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 for details.
2. For
θJC, the “case temp” location is the center of the exposed metal pad on the package underside. See Tech Brief TB379 for details.
Electrical Specifications
Recommended operating conditions unless otherwise noted. VCC = PVIN = 5.0V,
TA = -10°C to +100°C for ISL65426HRZ and TA = -40°C to +85°C for ISL65426IRZA. (Note 2)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
POWER SUPPLY
Quiescent Supply Current
EN1 = EN2 = EN = VCC = 5V, IOUT1 = IOUT2 = 0mA
30
mA
Shutdown Supply Current
EN1 = EN2 = EN = GND, VCC = PVIN = 5.5V
5.4
7
mA
EN1 = EN2 = EN = GND, VCC = PVIN = 3.3V
2.8
3.2
mA
EN1 = EN2 = EN = GND, VCC = PVIN = 2.375V
1.7
mA
PHASE CONFIGURATION
LX Pull Down
LX1,LX3, LX4, LX5, LX6 Only - Configuration Only
1
mA
LX Output Leakage
Low Level, Single LX output
-5
5
μA
High Level, Single LX output
-5
5
μA
Minimum Controllable ON time
(Note 3)
125
ns
OUTPUT VOLTAGE TOLERANCE
Reference Voltage Tolerance
TJ = -40°C to +100°C
0.594
0.6
0.606
V
TJ = 100°C to +125°C
0.591
0.6
0.609
V
Programmed Output Voltage Tolerance
TJ = -40°C to +125°C
2
2
%
OSCILLATOR
Accuracy
0.85
1
1.15
MHz
Maximum LX Pulse Width
950
ns
Minimum LX Pulse Width
50
ns
OUTPUT VOLTAGE SELECTION
VxSETx Input High Threshold
0.4
1.2
1.5
V
VxSETx Pull Down
710
15
μA
POWER BLOCKS
ISETx Input High Threshold
0.4
1.2
1.5
V
ISETx Pull Up
710
15
μA
ISL65426


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