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EC3286 Datasheet(PDF) 5 Page - E-CMOS Corporation

Part # EC3286
Description  3A 32V Synchronous Rectified Step-Down Converter
PDF  14 Pages
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Manufacturer  E-CMOS [E-CMOS Corporation]
Direct Link  http://www.ecmos.com.tw/
Logo E-CMOS - E-CMOS Corporation

EC3286 Datasheet(HTML) 5 Page - E-CMOS Corporation

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3A 32V Synchronous Rectified Step-Down
Converter
EC3286
E-CMOS Corp. (www.ecmos.com.tw)
Page 5 of 14
4J23N-Rev.F001
Electrical Characteristics
VIN = 12V, Ta = 25℃ unless otherwise specified.
Parameters
Symbol
Test Condition
Min.
Typ.
Max.
Unit
Shutdown Supply Current
VEN = 0V
1
3.0
µA
Supply Current
VEN = 2.0V; VFB =
1.0V
1.3
1.5
mA
Feedback Voltage
VFB
4.75V
≤ VIN ≤ 23V
0.900
0.923
0.946
V
Feedback Overvoltage Threshold
1.1
V
Error Amplifier Voltage Gain *
AEA
400
V/V
Error Amplifier Transconductance
GEA
∆IC = ±10µA
800
µA/V
High-Side Switch On Resistance *
RDS(ON)1
90
m
Ω
Low-Side Switch On Resistance *
RDS(ON)2
90
m
Ω
High-Side Switch Leakage
Current
VEN = 0V, VSW = 0V
10
µA
Upper Switch Current Limit
Minimum Duty Cycle
4.0
5.8
A
Lower Switch Current Limit
From Drain to Source
0.9
A
COMP to Current Sense
Transconductance
GCS
4.8
A/V
Oscillation Frequency
Fosc1
340
KHz
Short Circuit Oscillation
Frequency
Fosc2
VFB = 0V
100
KHz
Maximum Duty Cycle
DMAX
VFB = 1.0V
90
%
Minimum On Time *
220
ns
EN Shutdown Threshold Voltage
VEN Rising
1.1
1.5
2.0
V
EN Shutdown Threshold Voltage
Hysteresis
210
mV
EN Lockout Threshold Voltage
2.2
2.5
2.7
V
EN Lockout Hysterisis
210
mV



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