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LM2576T-12 Fiches technique(PDF) 5 Page - Texas Instruments

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No de pièce LM2576T-12
Description  LM2576/LM2576HV Series SIMPLE SWITCHER짰 3A Step-Down Voltage Regulator
Download  37 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

LM2576T-12 Fiches technique(HTML) 5 Page - Texas Instruments

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LM2576, LM2576HV
www.ti.com
SNVS107C – JUNE 1999 – REVISED APRIL 2013
ELECTRICAL CHARACTERISTICS LM2576-15, LM2576HV-15
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature
Range.
LM2576-15
Units
LM2576HV-15
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
15
V
Circuit of Figure 21 and Figure 22
14.70
V(Min)
15.30
V(Max)
VOUT
Output Voltage
0.5A
≤ ILOAD ≤ 3A,
15
V
LM2576
18V
≤ VIN ≤ 40V
14.40/14.25
V(Min)
Circuit of Figure 21 and Figure 22
15.60/15.75
V(Max)
VOUT
Output Voltage
0.5A
≤ ILOAD ≤ 3A,
15
V
LM2576HV
18V
≤ VIN ≤ 60V
14.40/14.25
V(Min)
Circuit of Figure 21 and Figure 22
15.68/15.83
V(Max)
η
Efficiency
VIN = 18V, 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.
ELECTRICAL CHARACTERISTICS LM2576-ADJ, LM2576HV-ADJ
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature
Range.
LM2576-ADJ
Units
LM2576HV-ADJ
Symbol
Parameter
Conditions
(Limits)
Typ
Limit (1)
SYSTEM PARAMETERS Test Circuit Figure 21 and Figure 22(2)
VOUT
Feedback Voltage
VIN = 12V, ILOAD = 0.5A
1.230
V
VOUT = 5V,
1.217
V(Min)
Circuit of Figure 21 and Figure 22
1.243
V(Max)
VOUT
Feedback Voltage
0.5A
≤ ILOAD ≤ 3A,
1.230
V
LM2576
8V
≤ VIN ≤ 40V
1.193/1.180
V(Min)
VOUT = 5V, Circuit of Figure 21 and Figure 22
1.267/1.280
V(Max)
VOUT
Feedback Voltage
0.5A
≤ ILOAD ≤ 3A,
1.230
V
LM2576HV
8V
≤ VIN ≤ 60V
1.193/1.180
V(Min)
VOUT = 5V, Circuit of Figure 21 and Figure 22
1.273/1.286
V(Max)
η
Efficiency
VIN = 12V, ILOAD = 3A, VOUT = 5V
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.
Copyright © 1999–2013, Texas Instruments Incorporated
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