ACT6390/ACT6391
Rev0, 13-May-08
ELECTRICAL CHARACTERISTICS
(V
IN
= V
EN
= 3V, V
FREQ
= 0V, T
A
= 25°C, unless otherwise specified.)
PARAMETER
Switch Voltage Rating
Input Voltage
Under Voltage Lockout Threshold
Under Voltage Lockout Hysteresis
V
IN
Rising
TEST CONDITIONS
MIN
TYP
MAX
12
UNIT
V
V
V
mV
2.7
2.2
2.35
65
V
FB
= 1.3V, Not Switching
0.2
ACT6390
ACT6391
1
1.4
0.1
490
900
80
700
1300
86
86
1.22
V
FB
= 1.27V
V
FB
from 2.6V to 5.5V
∆I
= 5µA
V
FB
= 1.15V and 1.35V, V
COMP
= 1.1V
V
FB
= 1V, Duty Cycle = 65%
ACT6390
ACT6391
V
SW
= 12V, EN = G
ACT6390
ACT6391
V
SS
= 1.2V
V
SS
= 1.2V, V
EN
= 0V
EN, FREQ
EN, FREQ
V
EN
= 0V or 5V
V
FREQ
= 3V
2.5
0
5.5
160
20
1.4
2
0.45
0.3
4.5
110
ACT6390
ACT6391
1.2
1.8
70
1.24
0
0.05
150
11
1.7
2.5
0.2
0.15
5.5
2.5
0.35
4
4
10
910
1700
92
µA
kHz
kHz
%
V
nA
%/V
µs
µA
2.3
3.4
0.4
0.3
15
A
mA
Quiescent Supply Current
V
FB
= 1.0V, Switching
EN = G
FREQ = G
FREQ = IN
FREQ = G
FREQ = IN
Supply Current in Shutdown
Switching Frequency
Maximum Duty Cycle
FB Feedback Voltage
FB Input Current
FB Voltage Line Regulation
Error Amplifier Trans-conductance
Error Amplifier Output Current
Switch Current Limit
1.26
80
0.15
240
Switch On Resistance
Switch Leakage Current
Current Sense Trans-resistance
Soft Start Pin Bias Current
Soft Start Reset Resistance
Logic High Threshold
Logic Low Threshold
EN Input Current
FREQ Pull-down Current
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
Ω
µA
V/A
7
220
µA
Ω
V
0.4
1
8.5
V
µA
µA
°C
°C
Innovative Power
TM
-4-
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