ISL6442 Datasheet, PDF (6/16 Pages) Intersil Corporation – Dual (180° Out-of-Phase) PWM and Linear Controller

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
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Power-Good Lower Threshold
PG_low₃ LDO enabled, PGOOD for LDO;
Ch1 and Ch2 disabled; (Note 3)
75
%
PGOOD Delay
PGOOD Leakage Current
PGOOD Voltage Low
THERMAL
t_PGOOD
I_PGOOD
V_{PG_low}
(Note 3); F_SW = 1.4MHz
V_PULLUP = 5.5V
I_PGOOD = -4mA
370
ms
5
µA
0.5
V
Shutdown Temperature
(Note 4)
150
°C
Shutdown Hysteresis
(Note 4)
20
°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
0.58
0.57
0.56
0.55
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
FIGURE 3. REFERENCE VOLTAGE VARIATION OVER
TEMPERATURE
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
5
10 15 20 25 30 35 40
RT (kΩ)
FIGURE 4. FREQUENCY vs RT RESISTOR
6
FN9204.2
October 31, 2008