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EC3293 数据表(PDF) 4 Page - E-CMOS Corporation

部件名 EC3293
功能描述  3A, 18V, Synchronous Step-down DC/DC Converter
PDF  11 Pages
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制造商  E-CMOS [E-CMOS Corporation]
网页  http://www.ecmos.com.tw/
标志 E-CMOS - E-CMOS Corporation

EC3293 数据表(HTML) 4 Page - E-CMOS Corporation

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3A, 18V, Synchronous Step-down DC/DC Converter
EC3293
E-CMOS Corp. (www.ecmos.com.tw)
Page 4 of 11
3L03N-Rev.P001
Electrical Characteristics
(TA = +25°C, VIN = +12V, unless otherwise noted.)
* Guaranteed by design, not tested.
PARAMETER
Symbol
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Supply Voltage
VIN
4.75
18
V
Output Voltage
VOUT
0.923
15
V
Shutdown Supply Current
VEN = 0V
3
6
µA
Supply Current
VEN = 2.0V, VFB = 1.0V
0.09
mA
Feedback Voltage
VFB
4.75V
≤ V
IN ≤ 18V
0.9
0.923
0.946
V
Feedback Over-voltage Threshold
1.01
V
Error Amplifier Voltage Gain *
AEA
1000
V/V
Error Amplifier Transconductance
GEA
ΔIC = ±10μA
120
µA/V
High-Side Switch-On Resistance *
RDS(ON)1
105
mΩ
Low-side Switch-On Resistance *
RDS(ON)2
85
mΩ
High-Side Switch Leakage Current
VEN = 0V, VSW = 0V,
TA = +125°C
10
µA
Upper Switch Current Limit
Minimum Duty Cycle
3.7
4.3
A
Lower Switch Current Limit
From Drain to Source
0
A
COMP to Current Sense Transconducta
nce
GCS
5.6
A/V
Oscillation Frequency
FOSC1
Rfreq = 175K
400
500
600
KHz
Short Circuit Oscillation Frequency
FOSC2
Rfreq = 175K, VFB = 0
V
100
125
150
KHz
Maximum Duty Cycle
DMAX
VFB = 0.5V
90
%
Minimum On Time *
120
ns
EN Falling Threshold Voltage
VEN Falling
1.22
V
EN Rising Threshold Voltage
VEN Rising
1.32
V
Input Under Voltage Lockout Threshold
VIN Rising
3.75
V
Input Under Voltage Lockout Threshold
Hysteresis
200
mV
Soft-Start Period
Fsw = 500KHz
16
ms
Thermal Shutdown *
150
°C



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