ACT6357(2007) 데이터 시트보기 (PDF) - Active-Semi, Inc

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ACT6357
(Rev.:2007)

High-Efficiency, 40V Step-Up WLED Bias Supplies

Active-Semi, Inc 

ACT6357/ACT6358

Rev PrB, 30-Aug-07

ELECTRICAL CHARACTERISTICS

(VIN = VEN = 3.3V, TA = 25°C, unless otherwise specified.)

PARAMETER

Power Switch Voltage Rating

Input Voltage

Under Voltage Lockout Threshold

Under Voltage Lockout Hysteresis

Supply Current

Supply Current in Shutdown

Maximum On Time

Maximum On Time Constant (K)

Minimum Off Time

FB Feedback Voltage

∆VFB/∆VBC Ratio

FB Input Current

BC Input Impedance

Switch Current Limit

Switch On Resistance

Switch Leakage Current

Over Voltage Protection Threshold

OV Input Current

EN Logic High Threshold

EN Logic Low Threshold

EN Input Current

Thermal Shutdown Temperature

Thermal Shutdown Hysteresis

TEST CONDITIONS

VIN Rising

Not Switching

Switching

EN = G

VIN = 3.3V

K = tMAXON × VIN

VBC = 3.3V

VBC = 1.25V

VBC = 0.625V

VFB = 1V

VBC = 0 to 1.25V

ACT6357

ACT6358

VIN = 3.3V

VSW = 38V, EN = G

VOV Rising

VOV = 1.5V

VEN = 0V or 5V

MIN

2.6

2.1

2.6

220

275

197

98

320

620

1.11

1.4

TYP MAX UNIT

40

V

5.5

V

2.25 2.45 V

80

mV

0.1 0.25

mA

0.25 0.5

0.1 10

µA

4.0 5.8

µs

13.2

µs × V

320 450 ns

290 305

207 217 mV

106 114

0.16

V/V

0 200 nA

400

kΩ

500 750

mA

1000 1500

0.55 0.9

Ω

10

µA

1.21 1.31 V

0 200 nA

V

0.4

V

0

1

µA

160

°C

20

°C

Innovative Products. Active Solutions.

-4-

www.active-semi.com

Copyright © 2007 Active-Semi, Inc.

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