ISL6744A_14 Datasheet, PDF (5/18 Pages) Intersil Corporation – Intermediate Bus PWM Controller

ISL6744A
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application
schematic. 9V < V_D < 16V, R_TD = 51.1kΩ, C_T = 470pF, T_A = -40°C to +105°C (Note 3), Typical values are at
T_A = +25°C (Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
OSCILLATOR
Charge Current
143
156
170
μA
R_TD Voltage
Discharge Current Gain
1.925
2
2.075
V
45
-
65
μA/μA
C_T Valley Voltage
C_T Peak Voltage
SOFT-START
0.75
0.8
0.85
V
2.70
2.80
2.90
V
Charging Current
45
-
68
µA
SS Clamp Voltage
3.8
4.0
4.2
V
Overcurrent Shutdown Threshold Voltage
(Note 4)
-
3.9
-
V
Overcurrent Discharge Current
12
15
23
μA
Reset Threshold Voltage
(Note 4)
0.25
0.27
0.30
V
OUTPUT
High Level Output Voltage (VOH)
Low Level Output Voltage (VOL)
Rise Time
Fall Time
THERMAL PROTECTION
V_DD - V_OUTA or V_OUTB,
I_OUT = -100mA
I_OUT = 100mA
C_GATE = 1nF, V_DD = 12V
C_GATE = 1nF, V_DD = 12V
-
0.5
2.0
V
-
0.5
1.0
V
-
17
60
ns
-
20
60
ns
Thermal Shutdown
(Note 4)
-
145
-
°C
Thermal Shutdown Clear
(Note 4)
-
130
-
°C
Hysteresis, Internal Protection
(Note 4)
-
15
-
°C
NOTES:
3. Specifications at -40°C and +105°C are guaranteed by +25°C test with margin limits.
4. Limits established by characterization and are not production tested.
5
FN6554.0
October 8, 2007