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:
4. Absolute maximum voltage rating is defined as the voltage applied for a lifetime average duty cycle above 6V of 1%.
5.
JA
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.
6. For
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
7. Electromigration specification defined as lifetime average junction temperature of +110°C where maximum rated DC current = lifetime average
current.
8. The recommended operating condition for V
IN
relative to GND is 1.8V to 6V for a junction temperature range of 0°C to +125°C. The recommended
operating condition for V
IN
relative to GND is 2.2V to 6V for a junction temperature range of -40°C to +125°C.
Unless otherwise noted, 1.8V < V
IN
< 6V, V
OUT
= 0.5V, T
J
= +25°C. Applications must follow thermal
guidelines of the package to determine worst case junction temperature. Please refer to
“Applications Information” on page 10
and Tech Brief
TB379.
Boldface limits apply across the operating temperature range, -40°C to +125°C.
PARAMETER
DC CHARACTERISTICS
Input Voltage
V
IN
0°C < T
J
< +125°C
-40°C < T
J
< +125°C
Feedback Pin Voltage
Feedback Input Current
Line Regulation
(V
OUT(LOW LINE) -
V
OUT(HIGH LINE)
)/
V
OUT(LOW LINE)
(V
OUT(NO LOAD) -
V
OUT(FULL LOAD)
)/
V
OUT(NO LOAD)
I
Q
V
FB
1.8V < V
IN
< 6V; 0A < I
LOAD
< 500mA
V
FB
= 0.5V
V
IN
= 1.8V to 6V; I
LOAD
= 100mA
-0.9
1.8
2.2
491
500
0.01
6.0
6.0
509
1
0.9
V
V
mV
µA
%
SYMBOL
TEST CONDITIONS
MIN
(Note
9)
TYP
MAX
(Note
9)
UNIT
Electrical Specifications
Load Regulation
V
IN
= 2.2V; I
LOAD
= 0A to 500mA
-0.7
0.7
%
Ground Pin Current
I
LOAD
= 0A, 1.8V < V
IN
< 6V
I
LOAD
= 500mA, 1.8V < V
IN
< 6V
2.2
2.8
0.2
45
0.75
1.2
160
30
4.6
5.7
12
90
1.5
mA
mA
µA
mV
A
°C
°C
Ground Pin Current in Shutdown
Dropout Voltage (
Note 10
)
Output Short-Circuit Current
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
I
SHDN
V
DO
OCP
TSD
TSDn
ENABLE pin = 0V, V
IN
= 6V
I
LOAD
= 500mA, V
OUT
= 2.5V
V
OUT
= 0V
FN8770 Rev 1.00
November 10, 2016
Page 4 of 13
ISL80505
Unless otherwise noted, 1.8V < V
IN
< 6V, V
OUT
= 0.5V, T
J
= +25°C. Applications must follow thermal
guidelines of the package to determine worst case junction temperature. Please refer to
“Applications Information” on page 10
and Tech Brief
TB379.
Boldface limits apply across the operating temperature range, -40°C to +125°C. (Continued)
PARAMETER
AC CHARACTERISTICS
Input Supply Ripple Rejection
PSRR
f = 1kHz, I
LOAD
= 500mA; V
IN
= 2.2V;
V
OUT
= 1.8V
f = 120Hz, I
LOAD
= 500mA; V
IN
= 2.2V;
V
OUT
= 1.8V
Output Noise Voltage
ENABLE PIN CHARACTERISTICS
Turn-On Threshold
Hysteresis
ENABLE Pin Turn-On Delay
ENABLE Pin Leakage Current
SOFT-START CHARACTERISTICS
SS Pin Currents (Note
11)
I
PD
I
CHG
NOTES:
9. 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.
10. Dropout is defined as the difference in supply V
IN
and V
OUT
when the output is below its nominal regulation.
11. I
PD
is the internal pull-down current that discharges the external SS capacitor on disable. I
CHG
is the current from the SS pin that charges the external
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