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LM2576T-12 数据表(PDF) 4 Page - Texas Instruments

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部件名 LM2576T-12
功能描述  SIMPLE SWITCHER짰 3A Step-Down Voltage Regulator
Download  37 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LM2576T-12 数据表(HTML) 4 Page - Texas Instruments

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LM2576, LM2576HV
SNVS107C – JUNE 1999 – REVISED APRIL 2013
www.ti.com
ELECTRICAL CHARACTERISTICS LM2576-5.0, LM2576HV-5.0
Specifications with standard type face are for TJ = 25°C, and those with Figure 21 and Figure 22 boldface type apply over
full Operating Temperature Range.
LM2576-5.0
Units
LM2576HV-5.0
Symbol
Parameter
Conditions
(Limits)
Typ
Limit (1)
SYSTEM PARAMETERS Figure 21 and Figure 22(2)
VOUT
Output Voltage
VIN = 12V, ILOAD = 0.5A
5.0
V
Circuit of Figure 21 and Figure 22
4.900
V(Min)
5.100
V(Max)
VOUT
Output Voltage
0.5A
≤ ILOAD ≤ 3A,
5.0
V
LM2576
8V
≤ VIN ≤ 40V
4.800/4.750
V(Min)
Circuit of Figure 21 and Figure 22
5.200/5.250
V(Max)
VOUT
Output Voltage
0.5A
≤ ILOAD ≤ 3A,
5.0
V
LM2576HV
8V
≤ VIN ≤ 60V
4.800/4.750
V(Min)
Circuit of Figure 21 and Figure 22
5.225/5.275
V(Max)
η
Efficiency
VIN = 12V, ILOAD = 3A
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.
(2)
External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance.
When the LM2576/LM2576HV is used as shown in Figure 21 and Figure 22, system performance will be as shown in ELECTRICAL
CHARACTERISTICS ALL OUTPUT VOLTAGE VERSIONS.
ELECTRICAL CHARACTERISTICS LM2576-12, LM2576HV-12
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature
Range.
LM2576-12
Units
LM2576HV-12
Symbol
Parameter
Conditions
(Limits)
Typ
Limit (1)
SYSTEM PARAMETERS Test Circuit Figure 21 and Figure 22(2)
VOUT
Output Voltage
VIN = 25V, ILOAD = 0.5A
12
V
Circuit of Figure 21 and Figure 22
V(Min)
11.76
12.24
V(Max)
VOUT
Output Voltage
0.5A
≤ ILOAD ≤ 3A,
12
V
LM2576
15V
≤ VIN ≤ 40V
V(Min)
11.52/11.40
Circuit of Figure 21 and Figure 22 and
12.48/12.60
V(Max)
VOUT
Output Voltage
0.5A
≤ ILOAD ≤ 3A,
12
V
LM2576HV
15V
≤ VIN ≤ 60V
V(Min)
11.52/11.40
Circuit of Figure 21 and Figure 22
12.54/12.66
V(Max)
η
Efficiency
VIN = 15V, ILOAD = 3A
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.
(2)
External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance.
When the LM2576/LM2576HV is used as shown in Figure 21 and Figure 22, system performance will be as shown in ELECTRICAL
CHARACTERISTICS ALL OUTPUT VOLTAGE VERSIONS.
4
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Copyright © 1999–2013, Texas Instruments Incorporated
Product Folder Links: LM2576 LM2576HV


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