ISL6842 Datasheet, PDF (5/9 Pages) Intersil Corporation – Improved Industry Standard Single Ended Current Mode PWM Controller

ISL6842, ISL6843, ISL6844, ISL6845
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application
schematic.
T_A = 25^oC
V_DD = 15V (Note
(Continued)
6),
Rt
=
10kΩ,
Ct
=
3.3nF,
T_A
=
-40
to
105^oC
(Note
3),
Typical
values
are
at
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Gain, A_CS = ∆V_COMP/∆V_CS
0 < V_CS < 910mV, V_FB = 0V
(Note 5)
2.5
3.0
3.5
V/V
CS to OUT Delay
(Note 5)
-
25
40
nS
ERROR AMPLIFIER
Open Loop Voltage Gain
(Note 5)
60
90
-
dB
Unity Gain Bandwidth
(Note 5)
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
2.500
2.525
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 to
60
80
-
dB
18V (Note 5)
OSCILLATOR
Frequency Accuracy
Frequency Variation with V_DD
Temperature Stability
Initial, T_J = 25^oC
T = 25^oC (F_18V - F_12V)/F_12V
(Note 5)
49
52
55
kHz
-
0.2
1.0
%
-
-
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 - OUT, I_OUT = -200mA
OUT - GND, I_OUT = 200mA
C_OUT = 1nF (Note 5)
C_OUT = 1nF (Note 5)
C_OUT = 1nF (Note 5)
-
1.0
2.0
V
-
1.0
2.0
V
-
1.0
-
A
-
20
40
nS
-
20
40
nS
Maximum Duty Cycle
ISL6842, ISL6843
94
96
-
%
ISL6844, ISL6845
47
48
-
%
Minimum Duty Cycle
ISL6842, ISL6843
-
-
0
%
ISL6844, ISL6845
-
-
0
%
NOTES:
3. Specifications at -40^oC are guaranteed by design, not production tested.
4. This is the V_DD current consumed when the device is active but not switching. Does not include gate drive current.
5. Guaranteed by design, not 100% tested in production.
6. Adjust V_DD above the start threshold and then lower to 15V.
5