ISL6336 Datasheet, PDF (9/31 Pages) Intersil Corporation – 6-Phase PWM Controller with Light Load Efficiency Enhancement and Current Monitoring

ISL6336, ISL6336A
Electrical Specifications
Operating Conditions: VCC = 5V, Unless Otherwise Specified. 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
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 1.24kΩ 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 1.24kΩ resistor pull-up to VCC, I_{VR_HOT} = 4mA
-
-
0.3
V
Leakage Current of VR_RDY
With external pull-up resistor 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
138 170 195
mV
Overvoltage Protection Reset Hysteresis
-
100
-
mV
OVP Output Low Voltage
IOVP = 4mA
- 0.106 0.16
V
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 0 to 1.1V first and then ramp to VID voltage after receiving valid VID input.
6. Soft-start ramp rate is determined by the adjustable soft-start oscillator frequency at the speed of 6.25mV per cycle.
9
FN6504.1
May 28, 2009