4
FN9238.2
September 14, 2015
Absolute Maximum Ratings Thermal Information
Supply Voltage, V
DD
. . . . . . . . . . . . . . . . . . . GND - 0.3V to +30.0V
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 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
Thermal Resistance (Typical, Note 1)
JA
(°C/W)
SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
MSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
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)
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.
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 ISL8843A - Recommended operating conditions unless otherwise noted. Refer to Block Diagram and
Typical Application schematic. V
DD
= 15V, RT = 10k, CT = 3.3nF, T
A
= -40 to 105°C (Note 3) Typical values
are at T
A
= 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
UNDERVOLTAGE LOCKOUT
START Threshold 8.0 8.4 9.0 V
STOP Threshold 7.3 7.6 8.0 V
Hysteresis -0.8- V
Startup Current, I
DD
V
DD
< START Threshold - 90 125 A
Operating Current, I
DD
(Note 4) - 2.9 4.0 mA
Operating Supply Current, I
D
Includes 1nF GATE loading - 4.75 5.5 mA
REFERENCE VOLTAGE
Overall Accuracy Over line (V
DD
= 12V to 18V), load,
temperature
4.925 5.000 5.050 V
Long Term Stability T
A
= 125°C, 1000 hours (Note 5) - 5 - mV
Current Limit, Sourcing -20 - - mA
Current Limit, Sinking 5--mA
CURRENT SENSE
Input Bias Current V
CS
= 1V -1.0 - 1.0 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 0.97 1.00 1.03 V
Gain, A
CS
= V
COMP
/V
CS
0 < V
CS
< 910mV, V
FB
= 0V 2.5 3.0 3.5 V/V
CS to OUT Delay -3555ns
ERROR AMPLIFIER
Open Loop Voltage Gain (Note 5) 60 90 - dB
Unity Gain Bandwidth (Note 5) 1.0 1.5 - MHz
Reference Voltage V
FB
= V
COMP
2.475 2.500 2.530 V
ISL8843
