ISL8843
Absolute Maximum Ratings
Thermal Information
Thermal Resistance (Typical, Note 1)
SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Junction Temperature . . . . . . . . . . . . . . . .-55°C to 150°C
Maximum Storage Temperature Range. . . . . . . . . . .-65°C to 150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300°C
(SOIC, MSOP - Lead Tips Only)
Supply Voltage, V
. . . . . . . . . . . . . . . . . . . GND - 0.3V to +30.0V
θ
(°C/W)
JA
100
130
DD
OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GND - 0.3V to V
+ 0.3V
DD
Signal Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 6.0V
Peak GATE Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1A
ESD Classification
Human Body Model (Per JESD22-A114C.01) . . . . . . . . . . .2000V
Machine Model (Per EIA/JESD22-A115-A) . . . . . . . . . . . . . .200V
Charged Device Model (Per JESD22-C191-A) . . . . . . . . . .1000V
Operating Conditions
Temperature Range
ISL8843AxZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to 105°C
ISL8843MxZ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-55°C to 125°C
Supply Voltage Range (Typical)
ISL8843 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9V - 30V
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 is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
JA
2. All voltages are with respect to GND.
Electrical Specifications ISL8843A - Recommended operating conditions unless otherwise noted. Refer to Block Diagram and
Typical Application schematic. V
= 15V, RT = 10kΩ, CT = 3.3nF, T = -40 to 105°C (Note 3) Typical values
A
DD
are at T = 25°C
A
PARAMETER
UNDERVOLTAGE LOCKOUT
START Threshold
TEST CONDITIONS
MIN
TYP
MAX
UNITS
8.0
8.4
7.6
0.8
90
9.0
8.0
-
V
V
STOP Threshold
7.3
Hysteresis
-
-
-
-
V
Startup Current, I
DD
V
< START Threshold
125
4.0
5.5
µA
mA
mA
DD
Operating Current, I
(Note 4)
2.9
4.75
DD
Operating Supply Current, I
REFERENCE VOLTAGE
Overall Accuracy
Includes 1nF GATE loading
D
Over line (V
= 12V to 18V), load,
4.925
5.000
5.050
V
DD
temperature
Long Term Stability
Current Limit, Sourcing
Current Limit, Sinking
CURRENT SENSE
Input Bias Current
CS Offset Voltage
T
= 125°C, 1000 hours (Note 5)
-
-20
5
5
-
-
-
-
mV
mA
mA
A
-
V
V
V
= 1V
-1.0
95
-
1.0
105
1.30
1.03
3.5
µA
mV
V
CS
CS
CS
= 0V (Note 5)
= 0V (Note 5)
100
1.15
1.00
3.0
COMP to PWM Comparator Offset Voltage
Input Signal, Maximum
0.80
0.97
2.5
-
V
Gain, A
= ∆V
/∆V
0 < V < 910mV, V = 0V
CS FB
V/V
ns
CS
COMP
CS
CS to OUT Delay
35
55
ERROR AMPLIFIER
Open Loop Voltage Gain
Unity Gain Bandwidth
Reference Voltage
(Note 5)
(Note 5)
60
1.0
90
1.5
-
-
dB
MHz
V
V
= V
2.475
2.500
2.530
FB
COMP
FN9238.0
October 19, 2005
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