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LM2576HV 数据表(PDF) 3 Page - Texas Instruments

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部件名 LM2576HV
功能描述  LM2576/LM2576HV Series SIMPLE SWITCHER짰 3A 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

LM2576HV 数据表(HTML) 3 Page - Texas Instruments

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LM2576, LM2576HV
www.ti.com
SNVS107C – JUNE 1999 – REVISED APRIL 2013
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ABSOLUTE MAXIMUM RATINGS
(1) (2)
Maximum Supply Voltage
LM2576
45V
LM2576HV
63V
ON /OFF Pin Input Voltage
−0.3V ≤ V ≤ +VIN
Output Voltage to Ground
(Steady State)
−1V
Power Dissipation
Internally Limited
Storage Temperature Range
−65°C to +150°C
Maximum Junction Temperature
150°C
Minimum ESD Rating
(C = 100 pF, R = 1.5 k
Ω)
2 kV
Lead Temperature
(Soldering, 10 Seconds)
260°C
(1)
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is intended to be functional, but do not ensured specific performance limits. For ensured specifications and test
conditions, see ELECTRICAL CHARACTERISTICS ALL OUTPUT VOLTAGE VERSIONS.
(2)
If Military/Aerospace specified devices are required, please contact the TI Sales Office/ Distributors for availability and specifications.
OPERATING RATINGS
Temperature Range
LM2576/LM2576HV
−40°C ≤ TJ ≤ +125°C
Supply Voltage
LM2576
40V
LM2576HV
60V
ELECTRICAL CHARACTERISTICS LM2576-3.3, LM2576HV-3.3
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature
Range.
LM2576-3.3
Units
LM2576HV-3.3
Symbol
Parameter
Conditions
(Limits)
Typ
Limit (1)
SYSTEM PARAMETERS Test Circuit Figure 21 and Figure 22(2)
VOUT
Output Voltage
VIN = 12V, ILOAD = 0.5A
3.3
V
Circuit of Figure 21 and Figure 22
3.234
V(Min)
3.366
V(Max)
VOUT
Output Voltage
6V
≤ VIN ≤ 40V, 0.5A ≤ ILOAD ≤ 3A
3.3
V
LM2576
Circuit of Figure 21 and Figure 22
3.168/3.135
V(Min)
3.432/3.465
V(Max)
VOUT
Output Voltage
6V
≤ VIN ≤ 60V, 0.5A ≤ ILOAD ≤ 3A
3.3
V
LM2576HV
Circuit of Figure 21 and Figure 22
3.168/3.135
V(Min)
3.450/3.482
V(Max)
η
Efficiency
VIN = 12V, ILOAD = 3A
75
%
(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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