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ACT4060B Datasheet(PDF) 4 Page - Active-Semi, Inc

Part # ACT4060B
Description  18V/2A Step-Down DC/DC Converter
PDF  16 Pages
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Manufacturer  ACTIVE-SEMI [Active-Semi, Inc]
Direct Link  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

ACT4060B Datasheet(HTML) 4 Page - Active-Semi, Inc

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ACT4060B
Rev 1, 23-May-12
®
Innovative PowerTM
- 4 -
www.active-semi.com
Copyright © 2012 Active-Semi, Inc.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX UNIT
Shutdown Supply Current
VEN = 0V
10
20
µA
Supply Current (No Switching)
VEN = 3V, VFB = 1.2V
0.75
1.1
mA
Feedback Voltage
VFB
4.75V ≤ VIN ≤ 18V
0.909
0.923
0.937
V
Error Amplifier Voltage Gain
AEA
400
V/V
Error Amplifier Transconductance
GEA
ΔIC = ±10μA
800
µA/V
High-Side Switch On Resistance
RDS(ON)1
130
mΩ
Low-Side Switch On Resistance
RDS(ON)2
130
mΩ
Upper Switch Current Limit
50% Duty Cycle
3.5
A
COMP to Current Sense
GCS
3.5
A/V
Oscillation Frequency
Fsw
290
350
400
kHz
Short Circuit Oscillation Frequency
80
kHz
Maximum Duty Cycle
DMAX
88
%
EN Lockout Threshold Voltage
2.4
2.6
2.8
V
EN Lockout Hysteresis
75
mV
Input Under Voltage Lockout
Threshold
Input Voltage Rising
4.0
4.2
4.4
V
Internal Soft Startup Time
2
ms
Hiccup Frequency at short circuit
26
Hz
Under Voltage Threshold
0.74
V
Thermal Shutdown Hysteresis Window
30
°C
Thermal Shutdown
160
°C
Input Voltage
4.5
18
V
ELECTRICAL CHARACTERISTICS
(VIN = 12V, TA = 25°C, unless otherwise specified.)



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