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ACT2103 数据表(PDF) 4 Page - Active-Semi, Inc

部件名 ACT2103
功能描述  18V/3A Step-Down DC/DC Converter
PDF  16 Pages
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制造商  ACTIVE-SEMI [Active-Semi, Inc]
网页  http://www.active-semi.com
标志 ACTIVE-SEMI - Active-Semi, Inc

ACT2103 数据表(HTML) 4 Page - Active-Semi, Inc

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ACT2103
Rev 2, 23-May-12
®
Innovative PowerTM
- 4 -
www.active-semi.com
Copyright © 2012 Active-Semi, Inc.
PARAMETER
SYMBOL
CONDITION
MIN
TYP
MAX UNIT
Shutdown Supply Current
VEN = 0V
10
20
µA
Supply Current
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
85
mΩ
Low-Side Switch On Resistance
RDS(ON)2
85
mΩ
Upper Switch Current Limit
50% Duty Cycle
4.5
A
COMP to Current Sense
GCS
4.5
A/V
Oscillation Frequency
Fsw
280
310
340
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
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 Win-
dow
30
°C
Thermal Shutdown
160
°C
ELECTRICAL CHARACTERISTICS
(VIN = 12V, TA = 25°C, unless otherwise specified.)



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