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ACT6357 Datasheet(PDF) 4 Page - Active-Semi, Inc

Part # ACT6357
Description  High-Efficiency, 40V Step-Up WLED Bias Supplies
PDF  10 Pages
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Manufacturer  ACTIVE-SEMI [Active-Semi, Inc]
Direct Link  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

ACT6357 Datasheet(HTML) 4 Page - Active-Semi, Inc

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ACT6357/ACT6358
Rev 1, 15-Nov-12
Innovative PowerTM
- 4 -
www.active-semi.com
Copyright © 2012 Active-Semi, Inc.
(VIN = VEN = 3.3V, TA = 25°C, unless otherwise specified.)
ELECTRICAL CHARACTERISTICS
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
Power Switch Voltage Rating
40
V
Input Voltage
2.6
5.5
V
Under Voltage Lockout Threshold
VIN Rising
2.1
2.25
2.45
V
Under Voltage Lockout Hysteresis
80
mV
Supply Current
Not Switching
0.1
0.25
mA
Switching
0.25
0.5
Supply Current in Shutdown
EN = G
0.1
10
µA
Maximum On Time
VIN = 3.3V
2.6
4.0
5.8
µs
Maximum On Time Constant (K)
K = tMAXON × VIN
13.2
µs × V
Minimum Off Time
220
320
450
ns
FB Feedback Voltage
VBC = 3.3V
275
290
305
mV
VBC = 1.25V
197
207
217
VBC = 0.625V
98
106
114
∆VFB/∆VBC Ratio
0.16
V/V
FB Input Current
VFB = 1V
0
200
nA
BC Input Impedance
VBC = 0 to 1.25V
400
kΩ
Switch Current Limit
ACT6357
320
500
750
mA
ACT6358
620
1000
1500
Switch On Resistance
VIN = 3.3V
0.55
0.9
Ω
Switch Leakage Current
VSW = 38V, EN = G
10
µA
Over Voltage Protection Threshold
VOV Rising
1.11
1.21
1.31
V
OV Input Current
VOV = 1.5V
0
200
nA
EN Logic High Threshold
1.4
V
EN Logic Low Threshold
0.4
V
EN Input Current
VEN = 0V or 5V
0
1
µA
Thermal Shutdown Temperature
160
°C
Thermal Shutdown Hysteresis
20
°C



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