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LM2671MX-3.3 Fiches technique(PDF) 4 Page - Texas Instruments

No de pièce LM2671MX-3.3
Description  LM2671 SIMPLE SWITCHER Power Converter High Efficiency 500mA Step-Down Voltage
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

LM2671MX-3.3 Fiches technique(HTML) 4 Page - Texas Instruments

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LM2671
SNVS008K – SEPTEMBER 1998 – REVISED APRIL 2013
www.ti.com
Electrical Characteristics LM2671-5.0
Symbol
Parameter
Conditions
Typical (1)
Min (2)
Max (2)
Units
SYSTEM PARAMETERS Test Circuit Figure 22 (3)
VOUT
Output Voltage
VIN = 8V to 40V, ILOAD = 20 mA to 500 mA
5.0
4.925/4.850
5.075/5.150
V
VOUT
Output Voltage
VIN = 6.5V to 40V, ILOAD = 20 mA to 250 mA
5.0
4.925/4.850
5.075/5.150
V
η
Efficiency
VIN = 12V, ILOAD = 500 mA
90
%
(1)
Typical numbers are at 25°C and represent the most likely norm.
(2)
All limits ensured 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 ensured via correlation using standard Statistical Quality Control
(SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
(3)
External components such as the catch diode, inductor, input and output capacitors, and voltage programming resistors can affect
switching regulator performance. When the LM2671 is used as shown in Figure 22 and Figure 23 test circuits, system performance will
be as specified by the system parameters section of the Electrical Characteristics.
Electrical Characteristics LM2671-12
Symbol
Parameter
Conditions
Typical (1)
Min (2)
Max (2)
Units
SYSTEM PARAMETERS Test Circuit Figure 22 (3)
VOUT
Output Voltage
VIN = 15V to 40V, ILOAD = 20 mA to 500 mA
12
11.82/11.64
12.18/12.36
V
η
Efficiency
VIN = 24V, ILOAD = 500 mA
94
%
(1)
Typical numbers are at 25°C and represent the most likely norm.
(2)
All limits ensured 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 ensured via correlation using standard Statistical Quality Control
(SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
(3)
External components such as the catch diode, inductor, input and output capacitors, and voltage programming resistors can affect
switching regulator performance. When the LM2671 is used as shown in Figure 22 and Figure 23 test circuits, system performance will
be as specified by the system parameters section of the Electrical Characteristics.
Electrical Characteristics LM2671-ADJ
Symbol
Parameter
Conditions
Typ (1)
Min (2)
Max (2)
Units
SYSTEM PARAMETERS Test Circuit Figure 23 (3)
VFB
Feedback Voltage
VIN = 8V to 40V, ILOAD = 20 mA to 500 mA
VOUT Programmed for 5V
1.210
1.192/1.174
1.228/1.246
V
(see Circuit of Figure 23)
VFB
Feedback Voltage
VIN = 6.5V to 40V, ILOAD = 20 mA to 250 mA
VOUT Programmed for 5V
1.210
1.192/1.174
1.228/1.246
V
(see Circuit of Figure 23)
η
Efficiency
VIN = 12V, ILOAD = 500 mA
90
%
(1)
Typical numbers are at 25°C and represent the most likely norm.
(2)
All limits ensured 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 ensured via correlation using standard Statistical Quality Control
(SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
(3)
External components such as the catch diode, inductor, input and output capacitors, and voltage programming resistors can affect
switching regulator performance. When the LM2671 is used as shown in Figure 22 and Figure 23 test circuits, system performance will
be as specified by the system parameters section of the Electrical Characteristics.
4
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