ISL6334ACRZ-T Datasheet, PDF (10/31 Pages) Intersil Corporation – VR11.1, 4-Phase PWM Controller with Light Load Efficiency Enhancement and Load Current Monitoring Features

ISL6334, ISL6334A
Electrical Specifications Operating Conditions: VCC = 5V, Unless Otherwise Specified. Boldface limits apply over the operating
temperature ranges, -40°C to +85°C or 0°C to +70°C. (Continued)
PARAMETER
TEST CONDITIONS
MIN
MAX
(Note 6) TYP (Note 6) UNITS
THERMAL MONITORING AND FAN CONTROL
TM Input Voltage for VR_FAN Trip
38.7 39.1 39.6 %VCC
TM Input Voltage for VR_FAN Reset
44.6 45.1 45.5 %VCC
TM Input Voltage for VR_HOT Trip
32.9 33.3 33.7 %VCC
TM Input Voltage for VR_HOT Reset
38.7 39.1 39.6 %VCC
Leakage Current of VR_FAN
With external pull-up resistor connected to VCC
-
-
5
µA
VR_FAN Low Voltage
Leakage Current of VR_HOT
With 1.24k resistor pull-up to VCC, I_{VR_FAN} = 4mA
-
With external pull-up resistor connected to VCC
-
-
0.3
V
-
5
µA
VR_HOT Low Voltage
VR READY AND PROTECTION MONITORS
With 1.24k resistor pull-up to VCC, I_{VR_HOT} = 4mA -
-
0.3
V
Leakage Current of VR_RDY
With pull-up resistor externally connected to VCC
-
-
5
µA
VR_RDY Low Voltage
Undervoltage Threshold
I_{VR_RDY} = 4mA
VDIFF Falling
-
-
0.3
V
48
50
52 %VID
VR_RDY Reset Voltage
VDIFF Rising
57
59.6
62
%VID
Overvoltage Protection Threshold
Before valid VID
1.250 1.273 1.300
V
After valid VID, the voltage above VID
158 175 190
mV
Overvoltage Protection Reset Hysteresis
-
100
-
mV
NOTES:
6. 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.
7. These parts are designed and adjusted for accuracy with all errors in the voltage loop included.
8. Limits should be considered typical and are not production tested.
9. During soft-start, VDAC rises from 0V to 1.1V first and then ramp to VID voltage after receiving valid VID.
10. Soft-start ramp rate is determined by the adjustable soft-start oscillator frequency at the speed of 6.25mV per cycle.
10
FN6482.2
February 1, 2013