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ISL65426 Datasheet(PDF) 8 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) 8 Page - Intersil Corporation

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8
FN6340.2
February 21, 2007
Maximum Output Current
Per Block; VCC = PVIN = 5.0V; VOUT = 1.8V (Note 3)
1.0
A
Per Block; VCC = PVIN = 2.375V; VOUT = 1.2V
(Note 3)
1.0
A
Peak Output Current Limit
Per Block
2.0
A
Upper Device rDS(ON)
0.4A Per Block, VCC = PVIN = 3.3V, VOUT = 1.8V
60
100
140
m
Ω
Lower Device rDS(ON)
0.4A Per Block, VCC = PVIN = 3.3V, VOUT = 1.8V
30
55
85
m
Ω
Efficiency
0.5A Per Block, VCC = PVIN = 3.3V, VOUT = 1.1V
90
%
0.5A Per Block, VCC = PVIN = 5V, VOUT = 2.5V
95
%
POWER-ON RESET AND ENABLE PINS
VCC POR Threshold
VCC Rising
2.15
2.25
2.35
V
VCC Falling
2.05
2.15
2.25
V
PVIN POR Threshold
PVIN Rising; Configuration 5:1
1.9
2.05
2.15
V
PVIN Falling; Configuration 5:1
1.75
1.90
2.00
V
PVIN Bias Output Voltage Enable Threshold
VOUT2 = 3.3V; VCC = PVIN
4.1
4.3
4.5
V
VOUT2 = 2.5V; VCC = PVIN
2.8
2.9
3.0
V
EN1/EN2 Threshold
Rising Threshold; VCC = 5V
1.0
1.2
1.45
V
Hysteresis
280
mV
Rising Threshold; VCC = 3.3V
0.75
0.98
1.20
V
Hysteresis
200
mV
Rising Threshold; VCC = 2.375V
0.55
0.82
1.05
V
Hysteresis
185
mV
EN1/EN2 Pull Up
710
15
μA
EN Threshold
0.57
0.6
0.63
V
EN Sink Current
EN = GND
7
11
15
μA
Soft-Start Time
4ms
POWER GOOD SIGNAL
Rising Threshold
As % of VREF; VOUT1 = 1.8V; VOUT2 = 3.3V
110
115
120
%
Rising Hysteresis
As % of VREF; VOUT1 = 1.8V; VOUT2 = 3.3V
5
7
9
%
Falling Threshold
As % of VREF; VOUT1 = 1.8V; VOUT2 = 3.3V
80
85
90
%
Falling Hysteresis
As % of VREF; VOUT1 = 1.8V; VOUT2 = 3.3V
4
7
9
%
Power Good Drive
VCC = 5V; PG1 = PG2 = 0.4V
1
mA
Power Good Leakage
1
μA
PROTECTION FEATURES
Undervoltage Monitor
Undervoltage Trip Threshold
As % of VREF
70
75
80
%
Undervoltage Recovery Threshold
As % of VREF
82
89
95
%
THERMAL MONITOR
Thermal Shutdown Temperature (Note 3)
150
°C
NOTE:
3. Not production tested.
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) (Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
ISL65426


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