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EP1551 Datasheet(PDF) 4 Page - Eorex Corporation

Part # EP1551
Description  1 MHz Five-channel Power Supply
PDF  16 Pages
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Manufacturer  EOREX [Eorex Corporation]
Direct Link  http://www.eorex.com
Logo EOREX - Eorex Corporation

EP1551 Datasheet(HTML) 4 Page - Eorex Corporation

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Preliminary
Rev.01
4/16
EP1551
Parameter
Conditions
MIN
TYP
MAX
unit
STEP-UP DC-DC CONVERTER :
Step-up
Startup-to-Normal
Operating Threshold
Rising or falling edge
2.3
2.5
2.6
V
Step-up Startup-to-Normal
Operating Threshold
Hysteresis
80
mV
Step-up Voltage Adjust Range
2.7
5.5
V
FBSU Regulation Voltage
1.225
1.25
1.275
V
OUTSU Regulation Voltage
FBSELSU = GND
3.250
3.350
3.450
V
FBSU to COMPSU
Transconductance
FBSU = COMPSU
80
135
185
µS
FBSU Input Leakage Current
FBSU =1.25V
-100
1
100
nA
Idle-Mode Trip Level
150
200
265
mA
Current-Sense Amplifier
Transresistance
0.3
V/A
Step-up Maximum Duty Cycle
FBSU = 1V
80
85
90
%
OUTSU Leakage Current
VLXSU = 0V, OUTSU = 5.5V
0.01
20
µA
LXSU Leakage Current
VLXSU = OUTSU = 5.5V
0.01
20
µA
N-channel
95
105
Switch On-Resistance
P-channel
150
250
mΩ
N-Channel Current Limit
2
A
P-Channel Turn-Off Current
20
mA
Startup Current Limit
OUTSU = 1.8V
1.2
670
mA
Startup tOFF
OUTSU = 1.8V
515
ns
Startup Frequency
OUTSU = 1.8V
0.3
244
KHz
STEP-DOWN DC-DC CONVERTER :
FBSD Regulation Voltage
1.225
1.25
1.275
V
OUTSD Regulation Voltage
FBSELSD=GND
1.470
1.500
1.530
V
FBSD TO COMPSD
Transconductance
FBSD=COMPSD
80
135
185
uS
FBSD Input Leakage Current
FBSD=1.25V
-100
1
100
nA
Idle-Mode Trip level
110
160
190
mA
Current-Sense Amplifier
Transresistance
0.6
V/A
VLXSD = 5.5V OUTSU = 5.5V
0.01
20
LXSD Leakage Current
VLXSD = 0V OUTSU = 5.5V
0.01
20
µA
N-channel
90
150
Switch On-Resistance
P-channel
150
250
Ω
P-channel Current Limit
0.79
A
N-channel Turn-off Current
20
mA
Soft-start Interval
4096
OSC
cycle
SDOK Output Low Voltage
FBSD=0.4v, 0.1mA into SDOK pin
0.002
0.1
V
SDOK Operating Voltage
1
5.5
V



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