ISL6441 Datasheet, PDF (7/18 Pages) Intersil Corporation – 1.4MHz Dual, 180 Out-of-Phase, Step-Down PWM and Single Linear Controller

ISL6441
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to “Block Diagram” on page 3 and “Typical
Application Schematic” on page 4. V_IN = 5.6V to 24V, or VCC_5V = 5V ±10%, T_A = -40°C to +85°C, Typical
values are at T_A = +25°C. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise
specified. Temperature limits established by characterization and are not production tested. (Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
ISEN and CURRENT LIMIT
Full Scale Input Current (Note 9)
-
32
-
µA
Overcurrent Threshold (Note 9)
OCSET (Current Limit) Voltage
R_OCSET = 110kΩ
-
64
-
µA
-
1.75
-
V
SOFT-START
Soft-Start Current
-
5
-
µA
PROTECTION
Thermal Shutdown
Rising
-
150
-
°C
Hysteresis
-
20
-
°C
NOTES:
3. In normal operation, where the device is supplied with voltage on the V_IN pin, the VCC_5V pin provides a 5V output capable of 60mA (min).
When the VCC_5V pin is used as a 5V supply input, the internal LDO regulator is disabled and the V_IN input pin must be connected to the
VCC_5V pin. (Refer to the “Pin Descriptions” on page 10 for more details.)
4. This is the total shutdown current with VIN = VCC_5V = PVCC = 5V.
5. Operating current is the supply current consumed when the device is active but not switching. It does not include gate drive current.
6. The peak-to-peak sawtooth amplitude is production tested at 12V only
7. Limits should be considered typical and are not production tested.
8. Limits established by characterization and are not production tested.
9. Established by characterization. The full scale current of 32µA is recommended for optimum current sample and hold operation. See the
“Feedback Loop Compensation” on page 13.
7
FN9197.3
May 26, 2009