ISL65426 Datasheet, PDF (7/22 Pages) Intersil Corporation – 6A Dual Synchronous Buck Regulator with Integrated MOSFETs

ISL65426
Absolute Maximum Ratings
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 Information
Thermal Resistance
θ_JA (°C/W) θ_JC (°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. . . . . . . . . . . . . . . . . .-10°C to +100°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. 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 for details.
2. For θ_JC, the “case temp” location is the center of the exposed metal pad on the package underside. See Tech Brief TB379 for details.
Electrical Specifications
PARAMETER
Recommended operating conditions unless otherwise noted. VCC = PVIN = 5.0V,
T_A = -10°C to +100°C. (Note 2)
TEST CONDITIONS
MIN TYP
POWER SUPPLY
Quiescent Supply Current
Shutdown Supply Current
EN1 = EN2 = EN = VCC = 5V, I_OUT1 = I_OUT2 = 0mA
30
EN1 = EN2 = EN = GND, VCC = PVIN = 5.5V
5.4
EN1 = EN2 = EN = GND, VCC = PVIN = 3.3V
2.8
EN1 = EN2 = EN = GND, VCC = PVIN = 2.375V
1.7
PHASE CONFIGURATION
LX Pull Down
LX1,LX3, LX4, LX5, LX6 Only - Configuration Only
1
LX Output Leakage
Low Level, Single LX output
-5
High Level, Single LX output
-5
Minimum Controllable ON time
(Note 3)
125
OUTPUT VOLTAGE TOLERANCE
Reference Voltage Tolerance
Programmed Output Voltage Tolerance
OSCILLATOR
T_J = -40°C to +100°C
T_J = 100°C to +125°C
T_J = -40°C to +125°C
0.594 0.6
0.591 0.6
2
Accuracy
0.85
1
Maximum LX Pulse Width
950
Minimum LX Pulse Width
50
OUTPUT VOLTAGE SELECTION
VxSETx Input High Threshold
0.4
1.2
VxSETx Pull Down
7
10
POWER BLOCKS
ISETx Input High Threshold
0.4
1.2
ISETx Pull Up
7
10
Maximum Output Current
Per Block; VCC = PVIN = 5.0V; VOUT = 1.8V (Note 3)
1.0
Per Block; VCC = PVIN = 2.375V; VOUT = 1.2V
1.0
(Note 3)
MAX UNITS
mA
7
mA
3.2
mA
mA
mA
5
μA
5
μA
ns
0.606
V
0.609
V
2
%
1.15 MHz
ns
ns
1.5
V
15
μA
1.5
V
15
μA
A
A
7
FN6340.1
November 14, 2006