ISL78215 Datasheet, PDF (7/11 Pages) Intersil Corporation – Improved Industry Standard Single-Ended Current Mode PWM Controller

ISL78215
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to “Functional Block
Diagram” on page 3 and “Typical Application” schematics on page 4 and 5. V_DD = 15V
(Note 10), R_t = 10kΩ, C_t = 3.3nF, T_A = -40 to +105°C, Typical values are at
T_A = +25°C. Boldface limits apply over the operating temperature range, -40°C to
+105°C. (Continued)
PARAMETER
TEST CONDITIONS
MIN
(Note 7)
TYP
MAX
(Note 7)
UNITS
CS to OUT Delay
(Note 9)
-
25
40
ns
ERROR AMPLIFIER
Open Loop Voltage Gain
(Note 9)
60
90
-
dB
Unity Gain Bandwidth
(Note 9)
3.5
5
-
MHz
Reference Voltage
FB Input Bias Current
COMP Sink Current
COMP Source Current
COMP VOH
COMP VOL
PSRR
V_FB = V_COMP
2.475
2.514
2.55
V
V_FB = 0V
-1.0
-0.2
1.0
µA
V_COMP = 1.5V, V_FB = 2.7V
1.0
-
-
mA
V_COMP = 1.5V, V_FB = 2.3V
-0.4
-
-
mA
V_FB = 2.3V
4.80
-
VREF
V
V_FB = 2.7V
0.4
-
1.0
V
Frequency = 120Hz, V_DD = 12V
60
80
-
dB
to 18V (Note 9)
OSCILLATOR
Frequency Accuracy
Frequency Variation with V_DD
Temperature Stability
Initial, T_J = +25°C
49
52
55
kHz
T = +25°C (f_18V - f_12V)/f_12V
-
0.2
1.0
%
(Note 9)
-
-
5
%
Amplitude, Peak-to-Peak
-
1.9
-
V
RTCT Discharge Voltage
-
0.7
-
V
Discharge Current
RTCT = 2.0V
7.2
8.4
9.5
mA
OUTPUT
Gate VOH
Gate VOL
Peak Output Current
Rise Time
Fall Time
PWM
V_DD to OUT, I_OUT = -200mA
-
1.0
2.0
V
OUT to GND, I_OUT = 200mA
-
1.0
2.0
V
C_OUT = 1nF (Note 9)
-
1.0
-
A
C_OUT = 1nF (Note 9)
-
20
40
ns
C_OUT = 1nF (Note 9)
-
20
40
ns
Maximum Duty Cycle
47
48
%
Minimum Duty Cycle
-
-
0
%
NOTES:
7. 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.
8. This is the V_DD current consumed when the device is active but not switching. Does not include gate drive current.
9. Limits established by characterization and are not production tested.
10. Adjust V_DD above the start threshold and then lower to 15V.
7
FN7673.0
August 16, 2010