ISL8845A Intersil Corporation, ISL8845A Datasheet - Page 7

• Manufacturer Part Number: ISL8845A
• Description: (ISL8840A - ISL8845A) High Performance Industry Standard Single-Ended Current Mode PWM Controller
• Manufacturer: Intersil Corporation

Electrical Specifications
NOTES:
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
(ISL8840A, ISL8842A, ISL8843A)
Maximum Duty Cycle
(ISL8841A, ISL8844A, ISL8845A)
Minimum Duty Cycle
3. Specifications at -40°C and +105°C are guaranteed by +25°C test with margin limits.
4. This is the V
5. These parameters, although guaranteed, are not 100% tested in production.
6. Adjust V
CS
= ΔV
DD
above the start threshold and then lower to 15V.
COMP
DD
PARAMETER
current consumed when the device is active but not switching. Does not include gate drive current.
/ΔV
ISL8840A, ISL8841A, ISL8842A, ISL8843A, ISL8844A, ISL8845A
CS
DD
7
ISL884xAA -
Typical Application schematic onpage 3 and page 4. V
(Note 3). Typical values are at T
Recommended operating conditions unless otherwise noted. Refer to Block Diagram and
(Note 5)
(Note 5)
V
V
V
Static Test
Static Test
C
COMP = GND
0 < V
V
V
V
Frequency = 120Hz, V
30V (Note 5)
Initial, T
T
(Note 5)
RTCT = 2.0V
V
OUT to GND, I
C
C
VDD = 5V, I
COMP = VREF
COMP = VREF
A
FB
FB
COMP
COMP
FB
FB
DD
OUT
OUT
OUT
= +25°C, (f
= V
= 0V
= 2.3V
= 2.7V
to OUT, I
CS
= 1nF (Note 5)
= 1nF (Note 5)
= 1nF (Note 5)
TEST CONDITIONS
A
COMP
= 1.5V, V
= 1.5V, V
< 910mV, V
= +25°C
A
LOAD
30V
= +25°C (Continued)
OUT
OUT
FB
FB
- f
= 1mA
= -200mA
10V
= 200mA
FB
= 2.7V
= 2.3V
DD
)/f
= 0V
30V
= 12V to
DD
= 15V, R
2.475
0.97
4.80
94.0
47.0
MIN
-1.0
-0.4
1.0
2.5
1.0
0.4
6.5
60
60
48
-
-
-
-
-
-
-
-
-
-
-
-
T
= 10kΩ, C
2.500
TYP
1.00
1.75
96.0
48.0
-0.2
3.0
1.5
0.2
1.0
7.8
1.0
1.0
1.0
35
90
80
51
20
20
-
-
-
-
-
-
-
T
= 3.3nF, T
VREF
2.530
MAX
1.03
3.5
1.0
1.0
1.0
8.5
2.0
2.0
1.2
55
53
40
40
5
0
-
-
-
-
-
-
-
-
-
-
A
= -40 to +105°C
UNITS
MHz
April 18, 2007
kHz
V/V
mA
mA
mA
dB
μA
dB
ns
ns
ns
%
%
%
%
%
V
V
V
V
V
V
V
V
A
V
FN6320.3