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參數(shù)資料
| 型號： | ISL6845IRZ-T |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Improved Industry Standard Single-Ended Current Mode PWM Controller |
| 中文描述： | 1 A SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 2 X 3 MM, ROHS COMPLIANT, PLASTIC, DFN-8 |
| 文件頁數(shù)： | 4/9頁 |
| 文件大小： | 264K |
| 代理商： | ISL6845IRZ-T |
4
Absolute Maximum Ratings
Thermal Information
Supply Voltage, V
DD
. . . . . . . . . . . . . . . . . . . GND - 0.3V to +20.0V
OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GND - 0.3V to V
DD
+ 0.3V
Signal Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 6.0V
Peak GATE Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1A
ESD Classification
Human Body Model (Per MIL-STD-883 Method 3015.7). . .2000V
Charged Device Model (Per EOS/ESD DS5.3, 4/14/93) . . .1000V
Operating Conditions
Temperature Range
ISL684xIx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40
o
C to 105
o
C
Supply Voltage Range (Typical)
ISL6843/5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9V-16V
ISL6842/4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15V-18V
Thermal Resistance (Typical, Note 1)
SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Junction Temperature. . . . . . . . . . . . . . . -55
o
C to 150
o
C
Maximum Storage Temperature Range . . . . . . . . . -65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s). . . . . . . . . . . . .300
o
C
(SOIC- Lead Tips Only)
θ
JA
(
o
C/W)
100
130
CAUTION: Stresses 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 sections of this specification is not implied.
NOTES:
1.
θ
JA
is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
2. All voltages are with respect to GND.
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application
schematic. V
DD
= 15V (Note 6), Rt = 10k
, Ct = 3.3nF, T
A
= -40 to 105
o
C (Note 3), Typical values are at
T
A
= 25
o
C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
UNDERVOLTAGE LOCKOUT
START Threshold (ISL6843, ISL6845)
7.8
8.4
9.0
V
START Threshold (ISL6842, ISL6844)
13.3
14.3
15.3
V
STOP Threshold (ISL6843, ISL6845)
6.7
7.2
7.7
STOP Threshold (ISL6842, ISL6844)
8.0
8.8
9.6
V
Hysteresis (ISL6843, ISL6845)
-
0.8
-
V
Hysteresis (ISL6842, ISL6844)
-
5.4
-
V
Start-Up Current, I
DD
V
DD
< START Threshold
-
60
100
μ
A
Operating Current, I
DD
(Note 4)
-
3.3
4.0
mA
Operating Supply Current, I
D
Includes 1nF GATE loading
-
4.1
5.5
mA
REFERENCE VOLTAGE
Overall Accuracy
Over line (V
DD
= 12V to 18V), load,
temp
4.925
5.000
5.050
V
Long Term Stability
T
A
= 125
o
C, 1000 hours (Note 5)
-
5
-
mV
Fault Voltage
4.40
4.65
4.85
V
VREF Good Voltage
4.60
4.80
VREF-0.05
V
Hysteresis
50
165
250
mV
Current Limit, Sourcing
-20
-
-
mA
Current Limit, Sinking
5
-
-
mA
CURRENT SENSE
Input Bias Current
V
CS
= 1V
-1.0
-
1.0
μ
A
CS Offset Voltage
V
CS
= 0V (Note 5)
95
100
105
mV
COMP to PWM Comparator Offset Voltage
V
CS
= 0V (Note 5)
0.80
1.15
1.30
V
Input Signal, Maximum
0.91
0.97
1.03
V
ISL6842, ISL6843, ISL6844, ISL6845
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