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EC3278 Datasheet(PDF) 5 Page - E-CMOS Corporation

No. de pieza EC3278
Descripción Electrónicos  2.4A/32V Synchronous Rectified Step-Down Converter
PDF  11 Pages
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Fabricante Electrónico  E-CMOS [E-CMOS Corporation]
Página de inicio  http://www.ecmos.com.tw/
Logo E-CMOS - E-CMOS Corporation

EC3278 Datasheet(HTML) 5 Page - E-CMOS Corporation

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E-CMOS Corp. (www.ecmos.com.tw)
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3I13N-Rev.P001
2.4A/32V Synchronous Rectified
Step-Down Converter
EC3278
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 ≤ 30V
0.900
0.923
0.946
V
Feedback Overvoltage Threshold
1.1
V
Error Amplifier Voltage Gain *
AEA
400
V/V
Error Amplifier Trans-conductance
GEA
∆IC = ±10µA
800
µA/V
High-Side Switch On Resistance *
RDS(ON)1
90
mΩ
Low-Side Switch On Resistance *
RDS(ON)2
90
mΩ
High-Side Switch Leakage
Current
VEN = 0V, VSW = 0V
10
µA
Upper Switch Current Limit
Minimum Duty Cycle
2.9
A
Lower Switch Current Limit
From Drain to Source
1.1
A
COMP to Current Sense
Trans-conductance
GCS
4.8
A/V
Oscillation Frequency
Fosc1
200
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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