ISL6420B Intersil Corporation, ISL6420B Datasheet - Page 6

• Manufacturer Part Number: ISL6420B
• Description: Advanced Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
• Manufacturer: Intersil Corporation

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Absolute Maximum Ratings
Bias Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+30V
BOOT and UGATE Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +36V
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:
Electrical Specifications
VIN SUPPLY
Input Voltage Range
VIN SUPPLY CURRENT
Shutdown Current (Note 4)
Operating Current (Notes 4, 5)
VCC5 SUPPLY (Notes 5, 6)
Input Voltage Range
Output Voltage
Maximum Output Current
POWER-ON RESET
Rising V
Falling V
UVLO Threshold Hysteresis
PWM CONVERTERS
Maximum Duty Cycle
Minimum Duty Cycle
FB Pin Bias Current
Undervoltage Protection
Overvoltage Protection
OSCILLATOR
Free Running Frequency
Total Variation
Frequency Range (Set by RT)
Ramp Amplitude (Note 7)
1. All voltages are with respect to GND.
2. θ
3. For θ
Tech Brief TB379.
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
CC5
JC
CC5
, the “case temp” location is the center of the exposed metal pad on the package underside.
Threshold
Threshold
PARAMETER
6
limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
Operating Conditions: V
(Note 1)
SYMBOL
ΔV
V
V
OVP
OSC
UV
IN
ENSS = GND
VIN = VCC5 for 5V configuration
VIN = 5.6V to 28V, I
VIN = 12V
VIN connected to VCC5, 5V input
operation
f
f
Fraction of the set point; ~3µs noise filter
Fraction of the set point; ~1µs noise filter
RT = VCC5, T
T
by external resistor at RT
VIN = 12V
= 12V, PV
SW
SW
A
ISL6420B
= -40°C to +85°C, with frequency set
= 300kHz
= 300kHz
TEST CONDITIONS
CC
shorted with V
A
Thermal Information
Thermal Resistance (Typical)
Maximum Junction Temperature (Plastic Package) . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Ambient Temperature Range. . . . . . . . -40°C to +85°C (for “I” suffix)
Junction Temperature Range. . . . . . . . . . . . . . . . . .-40°C to +125°C
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below
= -40°C to +85°C
QFN Package (Notes 2, 3). . . . . . . . . .
QSOP Package (Note 2) . . . . . . . . . . .
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
L
= 3mA to 50mA
CC5
, T
A
= +25°C; Parameters with MIN and/or MAX
4.310
4.090
MIN
0.16
270
112
100
5.6
4.5
4.5
50
90
75
-
-
-
-
-
-
±10%
4.400
4.100
TYP
1.25
300
1.4
2.0
5.0
5.0
12
96
80
-
-
-
-
-
-
θ
JA
(°C/W)
47
90
4.475
4.250
MAX
1400
120
330
3.0
5.5
5.5
28
85
0
-
-
-
-
-
-
-
θ
April 27, 2009
JC
UNITS
V
FN6901.0
8.5
NA
(°C/W)
kHz
kHz
mA
mA
mA
nA
%
%
%
%
%
P-P
V
V
V
V
V
V