ISL6722A_15 Datasheet, PDF (9/26 Pages) Intersil Corporation – Flexible Single Ended Current Mode PWM Controllers

ISL6722A, ISL6723A
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application
schematic. 9V < V_CC = V_C < 20V, Rt = 11k, Ct = 330pF, T_A = -40°C to +105°C (Note 4),
Typical values are at T_A = +25°C (Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
SYNCHRONIZATION (ISL6723A)
Input High Threshold
-
-
2.5
V
Input Pulse Width
25
-
-
ns
Input Frequency Range
(Note 6)
0.65 x Free
-
Running
1.0
MHz
Input Impedance
-
4.5
-
k
VOH
R_LOAD = 4.5k
2.5
-
-
V
VOL
R_LOAD = open
-
-
0.1
V
SYNC Advance
SYNC rising edge to GATE falling
-
edge, C_GATE = C_SYNC = 100pF
25
55
ns
Output Pulse Width
C_SYNC = 100pF
50
-
-
ns
NOTES:
4. Specifications at -40°C and +105°C are guaranteed by +25°C test with margin limits.
5. This is the V_CC current consumed when the device is active but not switching. Does not include gate drive current.
6. Limits should be considered typical and are not production tested.
7. This is the maximum duty cycle achievable using the specified values of RT and CT. Larger or smaller maximum duty cycles may be obtained
using other values for RT and CT. See Equations 1 through 4.
Typical Performance Curves
1.002
1.000
0.998
0.995
0.993
0.991
-40
-10
20
50
80
110
TEMPERATURE (°C)
FIGURE 1. EA REFERENCE VOLTAGE vs TEMPERATURE
1.002
0.996
0.989
0.983
0.976
0.970
-40
-10
20
50
80
110
TEMPERATURE (°C)
FIGURE 3. OSCILLATOR FREQUENCY vs TEMPERATURE
1.002
1.000
0.998
0.995
0.993
0.991
-40
-10
20
50
80
110
TEMPERATURE (°C)
FIGURE 2. V_REF REFERENCE VOLTAGE vs TEMPERATURE
1000
CT = 220pF
CT = 680pF
CT = 100pF
CT = 330pF
CT = 470pF
100
CT = 2200pF
CT = 1000pF
10
10 20 30 40 50 60 70 80 90 100
RT (k)
FIGURE 4. CAPACITANCE vs FREQUENCY
9
FN9237.2
September 29, 2015