ISL6308ACRZ-T Intersil, ISL6308ACRZ-T Datasheet - Page 5

• Manufacturer Part Number: ISL6308ACRZ-T
• Description: IC CTRLR PWM BUCK 3PHASE 40-QFN
• Manufacturer: Intersil

Specifications of ISL6308ACRZ-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: 0°C ~ 70°C
• Package / Case: 40-VFQFN, 40-VFQFPN
• Frequency-max: 275kHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
Recommended Operating Conditions
VCC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5V ±5%
PVCC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . +5V to 12V ±5%
Ambient Temperature (ISL6308ACRZ) . . . . . . . . . . . . 0°C to +70°C
Ambient Temperature (ISL6308AIRZ) . . . . . . . . . . . .-40°C to +85°C
CAUTION: Stress above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational section of this specification is not implied.
NOTES:
Electrical Specifications
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)
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
- 3.5V (<100ns Pulse Width, 2µJ) to V
PHASE
PARAMETER
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
F
VCC Rising
VCC Falling
PVCC Rising
PVCC Falling
Fsw
V
ENLL = 1V
COMP Falling
DROOP connected to IREF
DROOP connected to IREF
REF pin input
VCC
PVCC
BOOT
BOOT
sw
P-P
= 250kHz
; ENLL = high
; ENLL = high; all gate outputs open,
+ 0.3V
+ 0.3V
= 12V)
ISL6308A
TEST CONDITIONS
Thermal Information
Thermal Resistance
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below
QFN Package (Notes 1, 2) . . . . . . . . . .
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
0.595
4.25
3.75
4.25
3.75
MIN
225
-0.5
-0.8
-0.5
0.4
0.1
0.8
12
28
-
-
-
-
0.630
TYP
4.38
3.88
4.38
3.88
1.50
66.6
0.25
-1.4
250
0.8
0.6
15
35
θ
-
-
-
-
JA
(°C/W)
32
0.670
MAX
4.47
4.00
4.47
4.00
-3.0
275
September 9, 2008
1.2
0.4
0.8
0.5
0.4
18
43
-
-
-
-
θ
JC
FN6669.0
3.5
UNITS
(°C/W)
kHz
mA
mA
mV
µA
%
%
%
V
V
V
V
V
V
V
V
V
V