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ACT4514 Arkusz danych(PDF) 4 Page - Active-Semi, Inc

Numer części ACT4514
Szczegółowy opis  Wide-Input Sensorless CC/CV Step-Down DC/DC Converter
PDF  16 Pages
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Producent  ACTIVE-SEMI [Active-Semi, Inc]
Strona internetowa  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

ACT4514 Arkusz danych(HTML) 4 Page - Active-Semi, Inc

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ACT4514
Rev 1, 21-Jul-11
Active-Semi
Innovative Power
TM
- 4 -
www.active-semi.com
Copyright © 2011 Active-Semi, Inc.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Input Voltage
10
40
V
VIN UVLO Turn-On Voltage
Input Voltage Rising
9.05
9.35
9.65
V
VIN UVLO Hysteresis
Input Voltage Falling
1.1
V
VIN OVP Turn-Off Voltage
Input Voltage Rising
32.5
34.5
36.5
V
VIN OVP Hysteresis
Input Voltage Falling
1.75
V
Standby Supply Current
VEN = 3V, VFB = 1V
1.0
mA
VEN = 3V, VO = 5V, No load
2.5
mA
Shutdown Supply Current
VEN = 0V
75
100
µA
Feedback Voltage
792
808
824
mV
Internal Soft-Start Time
400
µs
Error Amplifier Transconductance
VFB = VCOMP = 0.8V, ∆ICOMP = ± 10µA
650
µA/V
Error Amplifier DC Gain
4000
V/V
Switching Frequency
VFB = 0.808V
190
210
240
kHz
Foldback Switching Frequency
VFB = 0V
30
kHz
Maximum Duty Cycle
82
85
88
%
Minimum On-Time
200
ns
COMP to Current Limit Transconductance VCOMP = 1.2V
1.75
A/V
Switch Current Limit
Duty = 50%
1.8
A
Slope Compensation
Duty = DMAX
0.75
A
ISET Voltage
1
V
ISET to IOUT DC Room Temp Current
Gain
IOUT / ISET
25000
A/A
EN Threshold Voltage
EN Pin Rising
0.75
0.8
0.85
V
EN Hysteresis
EN Pin Falling
80
mV
EN Internal Pull-up Current
4
µA
High-Side Switch ON-Resistance
0.3
Ω
SW Off Leakage Current
VEN = VSW = 0V
1
10
µA
Thermal Shutdown Temperature
Temperature Rising
155
°C
ELECTRICAL CHARACTERISTICS
(VIN = 14V, TA = 25°C, unless otherwise specified.)



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