ACT4523(2011) Ver la hoja de datos (PDF) - Active-Semi, Inc
Número de pieza
componentes Descripción
Lista de partido
ACT4523 Datasheet PDF : 15 Pages
| |||
Active-Semi
ELECTRICAL CHARACTERISTICS
(VIN = 20V, TA = 25°C, unless otherwise specified.)
PARAMETER
Input Voltage
Input Voltage Surge
VIN UVLO Turn-On Voltage
VIN UVLO Hysteresis
Standby Supply Current
Shutdown Supply Current
Feedback Voltage
Internal Soft-Start Time
Error Amplifier Transconductance
Error Amplifier DC Gain
Switching Frequency
Foldback Switching Frequency
Maximum Duty Cycle
Minimum On-Time
COMP to Current Limit Transconductance
Secondary Cycle-by-Cycle Current Limit
Slope Compensation
ISET Voltage
TEST CONDITIONS
Input Voltage Rising
Input Voltage Falling
VEN = 3V, VFB = 1V
VEN = 3V, VOUT = 5V, No load
VEN = 0V
VFB = VCOMP = 0.8V,
∆ICOMP = ± 10µA
VFB = 0.808V
VFB = 0V
VCOMP = 1.2V
Duty = DMAX
Duty = DMAX
ISET to IOUT DC Room Temp Current Gain IOUT / ISET, RISET = 19.6kΩ
CC Controller DC Accuracy
EN Threshold Voltage
EN Hysteresis
EN Internal Pull-up Current
High-Side Switch ON-Resistance
SW Off Leakage Current
Thermal Shutdown Temperature
RISET = 19.6kΩ, VOUT = 3.5V
Open-Loop DC Test
EN Pin Rising
EN Pin Falling
VEN = VSW = 0V
Temperature Rising
Thermal Shutdown Temperature Hysteresis Temperature Falling
ACT4523
Rev 4, 21-Jul-11
MIN TYP MAX UNIT
10
38
V
40
V
9.0
9.4
9.7
V
1.1
V
0.9
1.4
mA
3.0
mA
75
115
µA
792 808 824 mV
400
µs
650
µA/V
4000
V/V
200 225 250 kHz
30
kHz
85
88
91
%
200
ns
5.25
A/V
4.5
A
1.2
A
1
V
25000
A/A
1175 1190 1205 mA
1.47 1.6 1.73
V
125
mV
4
µA
0.16
Ω
1
10
µA
150
°C
20
°C
Innovative PowerTM
-4-
www.active-semi.com
Copyright © 2011 Active-Semi, Inc.
Share Link: 