ISL6308IRZ-T Intersil, ISL6308IRZ-T Datasheet - Page 5

• Manufacturer Part Number: ISL6308IRZ-T
• Description: IC CTRLR PWM 3PHASE BUCK 40-QFN
• Manufacturer: Intersil

Specifications of ISL6308IRZ-T

• Pwm Type: Voltage Mode
• Number Of Outputs: 1
• Frequency - Max: 275kHz
• Duty Cycle: 66.6%
• Voltage - Supply: 4.75 V ~ 5.25 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-VFQFN, 40-VFQFPN
• Frequency-max: 275kHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Electrical Specifications
Absolute Maximum Ratings
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
Supply Voltage, PVCC . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +15V
Absolute Boot Voltage, V
Phase Voltage, V
Upper Gate Voltage, V
Lower Gate Voltage, V
Input, Output, or I/O Voltage . . . . . . . . . GND - 0.3V to VCC + 0.3V
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
NOTES:
BIAS SUPPLY AND INTERNAL OSCILLATOR
Input Bias Supply Current
Gate Drive Bias Current
VCC POR (Power-On Reset) Threshold
PVCC POR (Power-On Reset) Threshold
Oscillator Frequency
Oscillator Ramp Amplitude (Note 3)
Maximum Duty Cycle (Note 3)
CONTROL THRESHOLDS
ENLL Rising Threshold
ENLL Hysteresis
ENLL Pull-up current
COMP Shutdown Threshold
REFERENCE AND DAC
System Accuracy (DAC = 0.6V, 0.9V)
System Accuracy (DAC = 1.2V, 1.50V)
DAC Input Low Voltage (REF0, REF1)
DAC Input High Voltage (REF0, REF1)
Minimum External Reference (Note 4)
Maximum External Reference (Note 4)
OFS Sink Current Accuracy (Negative Offset)
OFS Source Current Accuracy (Positive Offset) R
1. θ
2. For θ
Tech Brief TB379.
GND - 8V (<400ns, 20µJ) to 24V (<200ns, V
JA
V
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
PHASE
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
GND - 5V (<100ns Pulse Width, 2µJ) to PVCC+ 0.3V
PARAMETER
- 3.5V (<100ns Pulse Width, 2µJ) to V
PHASE
UGATE
LGATE
BOOT
. . . . . . . . GND - 0.3V to 15V (PVCC = 12)
. . . . . . . . GND - 0.3V to PVCC + 0.3V
. . . . V
. . . . . . . . GND - 0.3V to GND + 36V
5
Recommended Operating Conditions, 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.
PHASE
- 0.3V to V
BOOT-PHASE
I
I
VCC Rising
VCC Falling
PVCC Rising
PVCC Falling
F
V
ENLL = 1V
COMP Falling
DROOP connected to IREF
DROOP connected to IREF
REF pin input
REF pin input
R
VCC
PVCC
SW
P-P
OFS
OFS
; ENLL = high
BOOT
BOOT
; ENLL = high; all gate outputs open, F
= 30kΩ from OFS to VCC
= 10kΩ from OFS to GND
+ 0.3V
+ 0.3V
= 12V)
ISL6308
TEST CONDITIONS
Thermal Information
Thermal Resistance (Typical Notes 1, 2)
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below
Recommended Operating Conditions
VCC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+5V ±5%
PVCC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . +5V to 12V ±5%
Ambient Temperature (ISL6308CRZ) . . . . . . . . . . . . . 0°C to +70°C
Ambient Temperature (ISL6308IRZ) . . . . . . . . . . . . .-40°C to +85°C
40 Ld QFN Package . . . . . . . . . . . . . .
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
sw
= 250kHz
0.595
4.25
3.75
4.25
3.75
47.5
47.5
MIN
225
-0.5
-0.8
-0.5
0.4
0.1
0.8
12
54
-
-
-
-
-
0.630
4.38
TYP
4.38
3.88
3.88
1.50
66.6
0.25
1.75
50.0
50.0
250
-1.4
θ
0.8
0.6
15
61
JA
-
-
-
-
(°C/W)
32
September 30, 2008
0.670
MAX
4.47
4.00
4.47
4.00
52.5
52.5
-3.0
275
1.2
0.4
0.8
0.5
0.4
18
68
-
-
-
-
-
θ
JC
FN9208.4
3.5
(°C/W)
UNITS
kHz
mA
mA
mV
µA
µA
µA
%
%
%
V
V
V
V
V
V
V
V
V
V
V