ISL6336B Datasheet, PDF (9/31 Pages) Intersil Corporation – 6-Phase PWM Controller with Light Load Efficiency Enhancement and Current Monitoring

ISL6336B
Electrical Specifications Operating Conditions: VCC = 5V, Unless Otherwise Specified. (Continued)
PARAMETER
TEST CONDITIONS
MIN
MAX
(Note 7) TYP (Note 7) UNITS
Peak Current Limit for Individual Channel
115 129 146
µA
IMON Voltage Clamp and OCP Trip Level
1.085 1.11 1.14
V
THERMAL MONITORING AND FAN CONTROL
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_HOT
With external pull-up resistor connected to VCC
-
-
5
µA
VR_HOT Low Voltage
With 1.24kΩ resistor pull-up to VCC, I_{VR_HOT} = 4mA
VR READY AND PROTECTION MONITORS
-
-
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
158 175 190
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 are established by characterization 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.
7. 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.
9
FN6696.2
August 31, 2010