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ISL6444 Datasheet(PDF) 4 Page - Intersil Corporation

Part # ISL6444
Description  Dual PWM Controller with DDR Memory Option for Gateway Applications
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL6444 Datasheet(HTML) 4 Page - Intersil Corporation

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4
FN9069.3
April 12, 2007
Absolute Maximum Ratings
Thermal Information
Bias Voltage, Vcc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+ 6.5V
Input Voltage, Vin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +27.0V
PHASE, BOOT, ISEN, UGATE . . . . . . . . . . . . . GND -0.3V to +33.0V
BOOT with respect to PHASE . . . . . . . . . . . . . . . . . . . . . . . . . .+ 6.5V
All Other Pins . . . . . . . . . . . . . . . . . . . . . . . GND -0.3V to Vcc + 0.3V
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class 2
Recommended Operating Conditions
Bias Voltage, Vcc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.0V ±5%
Input Voltage, Vin . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.0V to +24.0V
Ambient Temperature Range . . . . . . . . . . . . . . . . . . .-10°C to +85°C
Junction Temperature Range. . . . . . . . . . . . . . . . . .-10°C to +125°C
Thermal Resistance (Typical, Note 1)
θ
JA (°C/W)
QSOP Package. . . . . . . . . . . . . . . . . . . . . . . . . . . .
78
Maximum Junction Temperature (Plastic Package) . . . . . . . +125°C
Maximum Storage Temperature Range . . . . . . . . . . -65°C to +150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . +300°C
(QSOP - Lead Tips Only)
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.
NOTE:
1.
θJA 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
Recommended Operating Conditions, Unless Otherwise Noted.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
VCC SUPPLY
Bias Current
ICC
LGATEx, UGATEx Open, VSENx forced above
regulation point, DDR = 0, VIN > 5V
-2.2
3.2
mA
Shut-Down Current
ICCSN
--
30
μA
VCC UVLO
Rising VCC Threshold
VCCU
4.3
4.65
4.75
V
Falling VCC Threshold
VCCD
4.1
4.35
4.45
V
VIN
Input Voltage Pin Current (Sink)
IVIN
10
-
30
μA
Input Voltage Pin Current (Source)
IVINO
--15
-30
μA
Shut-Down Current
IVINS
--
1
μA
OSCILLATOR
PWM1 Oscillator Frequency
Fc
255
300
345
kHz
Ramp Amplitude, pk-pk
VR1
VIN = 16V, by characterization
-
2
-
V
Ramp Amplitude, pk-pk
VR2
VIN = 5V, by characterization
-
1.25
-
V
Ramp Offset
VROFF
By characterization
-
0.5
-
V
Ramp/VIN Gain
GRB1
VIN
≥ 3V, by characterization
-
125
-
mV/V
Ramp/VIN Gain
GRB2
1
≤ VIN ≤ 3V, by characterization
-
250
-
mV/V
REFERENCE AND SOFT START
Internal Reference Voltage
VREF
-0.9
-
V
Reference Voltage Accuracy
-1.0
-
+1.0
%
Soft-Start Current During Start-Up
ISOFT
--5
-
μA
Soft-Start Complete Threshold
VST
By characterization
-
1.5
-
V
PWM CONVERTERS
Load Regulation
0.0mA < IVOUT1 < 5.0A; 5.0V < VBATT < 24.0V
-2.0
-
+2.0
%
VSEN Pin Bias Current
IVSEN
By characterization
50
80
120
nA
VOUT Pin Input Impedance
IVOUT
VOUT = 5V
40
55
65
k
Ω
ISL6444


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