ISL6721A_14 Datasheet, PDF (6/24 Pages) Intersil Corporation – Flexible Single-ended Current Mode PWM Controller

ISL6721A
Absolute Maximum Ratings
Supply Voltage, V_CC, V_C . . . . . . . . . . . . . . . . . GND -0.3V to +20.0V
GATE . . . . . . . . . . . . . . . . GND - 0.3V to Gate Output Limit Voltage
PGND to LGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.3V
VREF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 5.3V
Signal Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VREF
Peak GATE Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1A
Operating Conditions
Temperature Range
ISL6721Axx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +105°C
Supply Voltage Range (Typical, Note 4) . . . . . . . . 9VDC to 18VDC
Thermal Information
Thermal Resistance (Typical)
θ_JA (°C/W) θ_JC (°C/W)
16 Ld QFN (Notes 5, 6) . . . . . . . . . . . .
44
4
16 Ld TSSOP (Notes 7, 8) . . . . . . . . . . 105
33
Maximum Junction Temperature . . . . . . . . . . . . . . .-55°C to +150°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
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:
4. All voltages are with respect to GND.
5. 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.
6. For θ_JC, the “case temp” location is the center of the exposed metal pad on the package underside.
7. θ_JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
8. For θ_JC, the “case temp” location is taken at the package top center.
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application
schematic on page 3 and page 4. 9V < V_CC = V_C < 20V, RT = 11kΩ, CT = 330 pF. Typical values are at
T_A = +25°C. Boldface limits apply over the operating temperature range, -40°C to +105°C.
PARAMETER
TEST CONDITIONS
MIN
MAX
(Note 9)
TYP
(Note 9)
UNITS
UNDERVOLTAGE LOCKOUT
START Threshold
6.40
6.80
6.90
V
STOP Threshold
5.85
6.20
6.30
V
Hysteresis
0.50
0.60
1.00
V
Start-Up Current, I_CC
OC/OV Fault Operating Current, I_CC
Operating Current, I_CC
Operating Supply Current, I_C
REFERENCE VOLTAGE
V_CC < START Threshold
(Note 11)
Includes 1nF GATE loading
-
100
175
µA
-
200
300
µA
-
4.5
10.0
mA
-
8.0
12.0
mA
Overall Accuracy
Line, load, 0°C to +105°C
4.95
5.00
5.05
V
Line, load, -40°C to +105°C
4.90
5.00
5.05
V
Long Term Stability
Fault Voltage
T_A = +125°C, 1000 hours (Note 10)
-
5
-
mV
4.50
4.65
4.75
V
VREF Good Voltage
4.65
4.80
4.95
V
Hysteresis
75
165
250
mV
Operational Current
-10
-
-
mA
Current Limit
-20
-
-
mA
CURRENT SENSE
Input Impedance
-
5
-
kΩ
Offset Voltage
0.08
0.10
0.11
V
Input Voltage Range
0
-
1.5
V
6
FN6797.0
August 23, 2011