ISL6306 Datasheet, PDF (9/33 Pages) Intersil Corporation – 4-Phase PWM Controller with 8-Bit DAC Code Capable of Precision rDS ON or DCR Differential Current Sensing

ISL6306
Electrical Specifications Operating Conditions: VCC = 5V, Unless Otherwise Specified (Continued)
PARAMETER
TEST CONDITIONS
DAC Source Current
DAC Sink Current
REF Source Current
REF Sink Current
PIN-ADJUSTABLE OFFSET
Voltage at OFS Pin of ISL6306CRZ
Offset resistor connected to ground
Voltage below VCC, offset resistor connected to VCC
Voltage at OFS Pin of ISL6306IRZ
Offset resistor connected to ground
Voltage below VCC, offset resistor connected to VCC
OSCILLATORS
Accuracy of Switching Frequency Setting R_T = 100kΩ
Adjustment Range of Switching Frequency (Note 4)
Soft-Start Ramp Rate
R_S = 100kΩ (Notes 5, 6)
Adjustment Range of Soft-start Ramp Rate (Note 4)
PWM GENERATOR
Sawtooth Amplitude
Max Duty Cycle
ERROR AMPLIFIER
Open-Loop Gain
Open-Loop Bandwidth
Slew Rate
Maximum Output Voltage
R_L = 10kΩ to ground (Note 4)
C_L = 100pF, R_L = 10kΩ to ground (Note 4)
C_L = 100pF
Output High Voltage @ 2mA
Output Low Voltage @ 2mA
REMOTE-SENSE AMPLIFIER
Bandwidth
(Note 4)
Output High Current
VSEN - RGND = 2.5V
Output High Current
VSEN - RGND = 0.6
PWM OUTPUT
PWM Output Voltage LOW Threshold
I_LOAD = ±500µA
PWM Output Voltage HIGH Threshold
I_LOAD = ±500µA
SENSE CURRENT OUTPUT (IDROOP and IOUT)
Sensed Current Tolerance
ISEN1 = ISEN2 = ISEN3 = ISEN4 = 80µA
Overcurrent Trip Level
Maximum Voltage at IDROOP Pin
THERMAL MONITORING AND FAN CONTROL
TM Input Voltage for VR_FAN Trip
TM Input Voltage for VR_FAN Reset
TM Input Voltage for VR_HOT Trip
TM Input Voltage for VR_HOT Reset
MIN TYP MAX UNITS
-
4
7
mA
-
-
300 µA
45 50 55
µA
45 50 55
µA
392 400 408 mV
1.568 1.600 1.632 V
388 400 412 mV
1.552 1.600 1.648 V
225 250
0.08 -
- 1.563
0.625 -
275
1.0
-
6.25
kHz
MHz
mV/µs
mV/µs
-
1.5
-
V
- 66.7 -
%
-
96
-
dB
-
20
-
MHz
-
9
-
V/µs
3.8 4.3 4.9
V
3.6
-
-
V
-
-
1.2
V
-
20
-500 -
-500 -
-
MHz
500 µA
500 µA
-
-
0.5
V
4.3
-
-
V
76 80 84
µA
90 100 110 µA
-
2
-
V
1.6 1.65 1.69 V
1.89 1.93 1.98 V
1.35 1.4 1.44 V
1.6 1.65 1.69 V
9
FN9226.1
May 5, 2008