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LM2574HVN-5.0 데이터시트(PDF) 5 Page - Texas Instruments

부품명 LM2574HVN-5.0
상세설명  LM2574/LM2574HV SIMPLE SWITCHER??0.5A Step-Down Voltage Regulator
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홈페이지  http://www.ti.com
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LM2574HVN-5.0 데이터시트(HTML) 5 Page - Texas Instruments

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LM2574, LM2574HV
www.ti.com
SNVS104C – JUNE 1999 – REVISED APRIL 2013
LM2574-15, LM2574HV-15 Electrical Characteristics
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating
Temperature Range.
Symbol
Parameter
Conditions
LM2574-15
Units
LM2574HV-15
(Limits)
Typ
Limit (1)
SYSTEM PARAMETERS Test Circuit in Figure 23 and Figure 24,(2)
VOUT
Output Voltage
VIN = 30V, ILOAD = 100 mA
15
V
14.70
V(Min)
15.30
V(Max)
VOUT
Output Voltage
18V
≤ VIN ≤ 40V, 0.1A ≤ ILOAD ≤ 0.5A
15
V
LM2574
14.40/14.25
V(Min)
15.60/15.75
V(Max)
VOUT
Output Voltage
18V
≤ VIN ≤ 60V, 0.1A ≤ ILOAD ≤ 0.5A
15
14.40/14.25
V(Min)
LM2574HV
15.68/15.83
V(Max)
η
Efficiency
VIN = 18V, ILOAD = 0.5A
88
%
(1)
All limits specified at room temperature (Standard type face) and at temperature extremes (bold type face). All room temperature limits
are 100% production tested. All limits at temperature extremes are specified via correlation using standard Statistical Quality Control
(SQC) methods. All limits are used to calculate Average Outgoing Quality Level.
(2)
External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance.
When the LM2574 is used as shown in the Figure 24 test circuit, system performance will be as shown in system parameters section of
Electrical Characteristics.
LM2574-ADJ, LM2574HV-ADJ Electrical Characteristics
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating
Temperature Range. Unless otherwise specified, VIN = 12V, ILOAD = 100 mA.
Symbol
Parameter
Conditions
LM2574-ADJ
Units
LM2574HV-ADJ
(Limits)
Typ
Limit (1)
SYSTEM PARAMETERS Test Circuit in Figure 23 and Figure 24(2)
VFB
Feedback Voltage
VIN = 12V, ILOAD = 100 mA
1.230
V
1.217
V(Min)
1.243
V(Max)
VFB
Feedback Voltage
7V
≤ VIN ≤ 40V, 0.1A ≤ ILOAD ≤ 0.5A
1.230
V
LM2574
VOUT Programmed for 5V. Circuit of Figure 24
1.193/1.180
V(Min)
1.267/1.280
V(Max)
VFB
Feedback Voltage
7V
≤ VIN ≤ 60V, 0.1A ≤ ILOAD ≤ 0.5A
1.230
LM2574HV
VOUT Programmed for 5V. Circuit of Figure 24
1.193/1.180
V(Min)
1.273/1.286
V(Max)
η
Efficiency
VIN = 12V, VOUT = 5V, ILOAD = 0.5A
77
%
(1)
All limits specified at room temperature (Standard type face) and at temperature extremes (bold type face). All room temperature limits
are 100% production tested. All limits at temperature extremes are specified via correlation using standard Statistical Quality Control
(SQC) methods. All limits are used to calculate Average Outgoing Quality Level.
(2)
External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance.
When the LM2574 is used as shown in the Figure 24 test circuit, system performance will be as shown in system parameters section of
Electrical Characteristics.
Copyright © 1999–2013, Texas Instruments Incorporated
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