ISL6334 Datasheet, PDF (10/30 Pages) Intersil Corporation – VR11.1, 4-Phase PWM Controller with Light Load Efficiency Enhancement and Load Current Monitoring

ISL6334, ISL6334A
Electrical Specifications Operating Conditions: VCC = 5V, Unless Otherwise Specified. (Continued)
PARAMETER
TEST CONDITIONS
MIN
MAX
(Note 7) TYP (Note 7) 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:
3. These parts are designed and adjusted for accuracy with all errors in the voltage loop included.
4. Limits should be considered typical and are not production tested.
5. During soft-start, VDAC rises from 0V to 1.1V first and then ramp to VID voltage after receiving valid VID.
6. Soft-start ramp rate is determined by the adjustable soft-start oscillator frequency at the speed of 6.25mV per cycle.
7. Parts are 100% tested at +25°C. Temperature limits established by characterization and are not production tested.
10
FN6482.0
February 26, 2008