
ISL6442
Electrical Specifications
Operating Conditions Unless Otherwise Noted: VIN = 12V, or V CC = 5V ±10%, T A = -40°C to +85°C. Typical
values are at +25°C. 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. (Continued)
PARAMETER
Power-Good Lower Threshold
SYMBOL
PG_low 3
TEST CONDITIONS
LDO enabled, PGOOD for LDO;
MIN
TYP
75
MAX
UNITS
%
Ch1 and Ch2 disabled; (Note 3)
PGOOD Delay
PGOOD Leakage Current
PGOOD Voltage Low
t PGOOD
I PGOOD
V PG_low
(Note 3); F SW = 1.4MHz
V PULLUP = 5.5V
I PGOOD = -4mA
370
5
0.5
ms
μ A
V
THERMAL
Shutdown Temperature
Shutdown Hysteresis
(Note 4)
(Note 4)
150
20
°C
°C
NOTES:
3. Limits established by characterization and are not production tested.
4. Design guideline only; not production tested.
Typical Performance Curves
0.65
0.64
0.63
0.62
0.61
0.60
0.59
4.0
3.5
3.0
2.5
2.0
1.5
0.58
1.0
0.57
0.56
0.5
0.55
-40
-20
0 20 40
60
80
0.0
0
5
10
15
20
25
30
35
40
TEMPERATURE (°C)
FIGURE 3. REFERENCE VOLTAGE VARIATION OVER
TEMPERATURE
6
RT (k Ω )
FIGURE 4. FREQUENCY vs RT RESISTOR
FN9204.2
October 31, 2008