参数资料
型号: ISL6227CA
厂商: INTERSIL CORP
元件分类: 稳压器
英文描述: Dual Mobile-Friendly PWM Controller with DDR Option
中文描述: DUAL SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO28
封装: 0.150 INCH, PLASTIC, SSOP-28
文件页数: 21/27页
文件大小: 834K
代理商: ISL6227CA
3
FN9094.7
May 4, 2009
Absolute Maximum Ratings
Bias Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +6.5V
Input Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +28.0V
PHASE, UGATE . . . . . . . . . . . . . . . . . . . GND -5V (Note 1) to 33.0V
BOOT, ISEN . . . . . . . . . . . . . . . . . . . . . . . . . . GND -0.3V to +33.0V
BOOT with Respect to PHASE . . . . . . . . . . . . . . . . . . . . . . . . + 6.5V
All Other Pins . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VCC + 0.3V
Recommended Operating Conditions
Bias Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.0V ±5%
Input Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . .+5.0V to +28.0V
Ambient Temperature Range . . . . . . . . . . . . . . . . . -10°C to +100°C
Junction Temperature Range . . . . . . . . . . . . . . . . . -10°C to +125°C
Thermal Information
Thermal Resistance (Typical)
θ
JA (°C/W)
θ
JC (°C/W)
QSOP Package (Note 2) . . . . . . . . . . . . .
80
N/A
QFN Package (Notes 3, 4). . . . . . . . . . . .
36
6
Maximum Junction Temperature (Plastic Package). . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . . -65°C to +150°C
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below
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:
1. 250ns transient. See Confining The Negative Phase Node Voltage Swing in Application Information Section
2.
θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
3.
θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
4. For
θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
5. Limits established by characterization and are not production tested.
Electrical Specifications
Recommended Operating Conditions, Unless Otherwise Noted. 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.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
VCC SUPPLY
Bias Current
ICC
LGATEx, UGATEx Open, VSENx forced above
regulation point, VIN > 5V
-1.8
3.0
mA
Shut-down Current
ICCSN
--
1
A
VCC UVLO
Rising VCC Threshold
VCCU
4.3
4.45
4.5
V
Falling VCC Threshold
VCCD
44.14
4.34
V
VIN
Input Voltage Pin Current (Sink)
IVIN
--
35
A
Shut-Down Current
IVINS
--
1
A
OSCILLATOR
PWM1 Oscillator Frequency
fc
Commercial, ISL6227C
255
300
345
kHz
Industrial, ISL6227I
240
300
345
kHz
Ramp Amplitude, pk-pk
VR1
VIN = 16V (Note 5)
-
2
-
V
Ramp Amplitude, pk-pk
VR2
VIN = 5V (Note 5)
-
0.625
-
V
Ramp Offset
VROFF
(Note 5)
-
1
-
V
Ramp/VIN Gain
GRB1
VIN ≥ 4.2V (Note 5)
-
125
-
mV/V
Ramp/VIN Gain
GRB2
VIN ≤ 4.1V (Note 5)
-
250
-
mV/V
REFERENCE AND SOFT-START
Internal Reference Voltage
VREF
-0.9
-
V
Reference Voltage Accuracy
-1.0
-
+1.0
%
ISL6227
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