ISL6840IUZ-T Datasheet, PDF (7/13 Pages) Intersil Corporation – Improved Industry Standard Single-Ended Current Mode PWM Controller

ISL6840, ISL6841, ISL6842, ISL6843, ISL6844, ISL6845
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to “Functional Block Diagram” and
“Typical Application” schematic on pages 3 and 4. V_DD = 15V (Note 12), R_t = 10kΩ, C_t = 3.3nF,
T_A = -40°C to +105°C (Industrial) or T_A = 0°C to +70°C (Commercial), Typical values are at T_A = +25°C.
Boldface limits apply over the operating temperature range, -40°C to +105°C or 0°C to +70°C. (Continued)
PARAMETER
TEST CONDITIONS
MIN
(Note 9) TYP
MAX
(Note 9) UNITS
Current Limit, Sourcing
-20
-
-
mA
Current Limit, Sinking
5
-
-
mA
CURRENT SENSE
Input Bias Current
CS Offset Voltage
COMP to PWM Comparator Offset Voltage
Input Signal, Maximum
V_CS = 1V
V_CS = 0V (Note 11)
V_CS = 0V (Note 11)
-1.0
-
1.0
µA
95
100
105
mV
0.80 1.15
1.30
V
0.91 0.97
1.03
V
Input Signal, Maximum (ISL6843C Only)
0.9 0.97
1.07
V
Gain, A_CS = ΔV_COMP/ΔV_CS
CS to OUT Delay
0 < V_CS < 910mV, V_FB = 0V (Note 11)
(Note 11)
2.5
3.0
3.5
V/V
-
25
40
ns
CS to OUT Delay (ISL6843C Only)
(Note 11)
70
ns
ERROR AMPLIFIER
Open Loop Voltage Gain
(Note 11)
60
90
-
dB
Open Loop Voltage Gain (ISL6843C Only)
(Note 11)
55
dB
Unity Gain Bandwidth
(Note 11)
3.5
5
-
MHz
Reference Voltage
FB Input Bias Current
COMP Sink Current
COMP Source Current
COMP VOH
COMP VOL
PSRR
OSCILLATOR
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 to 18V (Note 11)
60
80
-
dB
Frequency Accuracy
Frequency Variation with V_DD
Temperature Stability
Initial, T_J = +25°C
T = +25°C (f_18V - f_12V)/f_12V
(Note 11)
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 to OUT, I_OUT = -200mA
OUT to GND, I_OUT = 200mA
C_OUT = 1nF (Note 11)
C_OUT = 1nF (Note 11)
C_OUT = 1nF (Note 11)
-
1.0
2.0
V
-
1.0
2.0
V
-
1.0
-
A
-
20
40
ns
-
20
40
ns
7
FN9124.11
February 23, 2012