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LM2574HVM-3.3 数据表(PDF) 4 Page - Texas Instruments

部件名 LM2574HVM-3.3
功能描述  LM2574/LM2574HV SIMPLE SWITCHER??0.5A Step-Down Voltage Regulator
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LM2574HVM-3.3 数据表(HTML) 4 Page - Texas Instruments

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LM2574, LM2574HV
SNVS104C – JUNE 1999 – REVISED APRIL 2013
www.ti.com
LM2574-5.0, LM2574HV-5.0 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
LM2574-5.0
Units
(Limits)
LM2574HV-5.0
Typ
Limit (1)
SYSTEM PARAMETERS Test Circuit in Figure 23 and Figure 24,(2)
VOUT
Output Voltage
VIN = 12V, ILOAD = 100 mA
5
V
4.900
V(Min)
5.100
V(Max)
VOUT
Output Voltage
7V
≤ VIN ≤ 40V, 0.1A ≤ ILOAD ≤ 0.5A
5
V
LM2574
4.800/4.750
V(Min)
5.200/5.250
V(Max)
VOUT
Output Voltage
7V
≤ VIN ≤ 60V, 0.1A ≤ ILOAD ≤ 0.5A
5
4.800/4.750
V(Min)
LM2574HV
5.225/5.275
V(Max)
η
Efficiency
VIN = 12V, 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.
LM2574-12, LM2574HV-12 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
LM2574-12
Units
LM2574HV-12
(Limits)
Typ
Limit (1)
SYSTEM PARAMETERS Test Circuit in Figure 23 and Figure 24,(2)
VOUT
Output Voltage
VIN = 25V, ILOAD = 100 mA
12
V
11.76
V(Min)
12.24
V(Max)
VOUT
Output Voltage
15V
≤ VIN ≤ 40V, 0.1A ≤ ILOAD ≤ 0.5A
12
V
LM2574
11.52/11.40
V(Min)
12.48/12.60
V(Max)
VOUT
Output Voltage
15V
≤ VIN ≤ 60V, 0.1A ≤ ILOAD ≤ 0.5A
12
11.52/11.40
V(Min)
LM2574HV
12.54/12.66
V(Max)
η
Efficiency
VIN = 15V, 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.
4
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Copyright © 1999–2013, Texas Instruments Incorporated
Product Folder Links: LM2574 LM2574HV


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