ISL8843 Intersil Corporation, ISL8843 Datasheet - Page 6

• Manufacturer Part Number: ISL8843
• Description: Industry Standard Single-Ended Current Mode PWM Controller
• Manufacturer: Intersil Corporation

Electrical Specifications
NOTES:
Long Term Stability
Current Limit, Sourcing
Current Limit, Sinking
CURRENT SENSE
Input Bias Current
CS Offset Voltage
COMP to PWM Comparator Offset Voltage
Input Signal, Maximum
Gain, A
CS to OUT Delay
ERROR AMPLIFIER
Open Loop Voltage Gain
Unity Gain Bandwidth
Reference Voltage
FB Input Bias Current
COMP Sink Current
COMP Source Current
COMP VOH
COMP VOL
PSRR
OSCILLATOR
Frequency Accuracy
Frequency Variation with V
Temperature Stability
Amplitude, Peak to Peak
RTCT Discharge Voltage (Valley Voltage)
Discharge Current
OUTPUT
Gate VOH
Gate VOL
Peak Output Current
Rise Time
Fall Time
GATE VOL UVLO Clamp Voltage
PWM
Maximum Duty Cycle
Minimum Duty Cycle
6. Specifications at -55°C and 125°C are guaranteed by 25°C test with margin limits.
7. This is the V
8. Guaranteed by design, not 100% tested in production.
CS
= ∆V
COMP
DD
PARAMETER
current consumed when the device is active but not switching. Does not include gate drive current.
/∆V
CS
DD
6
ISL8843M
Typical Application schematic. V
are at T
A
= 25°C (Continued)
- Recommended operating conditions unless otherwise noted. Refer to Block Diagram and
T
V
V
V
0 < V
(Note 8)
(Note 8)
V
V
V
V
V
V
Frequency = 120Hz, V
18V (Note 8)
Initial, T
T
(Note 8)
Static Test
Static Test
RTCT = 2.0V
V
OUT - GND, I
C
C
C
VDD = 5V, I
COMP = VREF
COMP = GND
A
A
CS
CS
CS
FB
FB
COMP
COMP
FB
FB
DD
OUT
OUT
OUT
= 125°C, 1000 hours (Note 8)
= 25°C, (F
= V
= 0V
= 2.3V
= 2.7V
= 1V
= 0V (Note 8)
= 0V (Note 8)
- OUT, I
CS
= 1nF (Note 8)
= 1nF (Note 8)
= 1nF (Note 8)
TEST CONDITIONS
A
COMP
= 1.5V, V
= 1.5V, V
< 910mV, V
= 25°C
ISL8843
LOAD
DD
OUT
30V
OUT
= 15V, RT = 10kΩ, CT = 3.3nF, T
FB
FB
= -200mA
- F
= 1mA
= 200mA
FB
= 2.7V
= 2.3V
9V
DD
)/F
= 0V
30V
= 12V to
2.460
MIN
0.80
0.97
4.80
93.5
-1.0
-1.0
-0.4
-20
2.5
1.0
1.0
0.4
6.2
95
60
60
48
5
-
-
-
-
-
-
-
-
-
-
-
-
-
A
= -55 to 125°C (Note 6), Typical values
2.500
TYP
1.15
1.00
1.75
-0.2
100
3.0
1.5
0.2
1.0
8.0
1.0
1.0
1.0
90
35
80
51
20
20
95
5
-
-
-
-
-
-
-
-
-
-
VREF
2.535
MAX
1.30
1.03
105
1.0
3.5
1.0
1.0
1.0
8.5
2.0
2.0
1.2
60
53
40
40
5
0
-
-
-
-
-
-
-
-
-
-
-
-
January 3, 2006
UNITS
MHz
kHz
mV
mA
mA
mV
V/V
mA
mA
mA
µA
dB
µA
dB
ns
ns
ns
%
%
%
%
FN9238.1
V
V
V
V
V
V
V
V
V
A
V