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LM2674MX-12 датащи(PDF) 4 Page - Texas Instruments

номер детали LM2674MX-12
подробное описание детали  LM2674 SIMPLE SWITCHER짰 Power Converter High Efficiency 500 mA Step-Down Voltage Regulator
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LM2674MX-12 датащи(HTML) 4 Page - Texas Instruments

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LM2674
SNVS007F – SEPTEMBER 1998 – REVISED APRIL 2013
www.ti.com
LM2674-5.0
Symbol
Parameter
Conditions
Typical(1)
Min(2)
Max(2)
Units
SYSTEM PARAMETERSTest 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 LM2674 is used as shown in Figure 22 andFigure 23 test circuits, system performance will
be as specified by the system parameters section of the Electrical Characteristics.
LM2674-12
Symbol
Parameter
Conditions
Typical(1)
Min(2)
Max(2)
Units
SYSTEM PARAMETERSTest 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 LM2674 is used as shown in Figure 22 andFigure 23 test circuits, system performance will
be as specified by the system parameters section of the Electrical Characteristics.
LM2674-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 LM2674 is used as shown in Figure 22 andFigure 23 test circuits, system performance will
be as specified by the system parameters section of the Electrical Characteristics.
4
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