Datasheet

LM2574, LM2574HV
SNVS104C –JUNE 1999–REVISED APRIL 2013 www.ti.com
LM2574-5.0, LM2574HV-5.0 Electrical Characteristics
Specifications with standard type face are for T
J
= 25°C, and those with boldface type apply over full Operating
Temperature Range.
Symbol Parameter Conditions LM2574-5.0 Units
(Limits)
LM2574HV-5.0
Typ Limit
(1)
SYSTEM PARAMETERS Test Circuit in Figure 23 and Figure 24,
(2)
V
OUT
Output Voltage V
IN
= 12V, I
LOAD
= 100 mA 5 V
4.900 V(Min)
5.100 V(Max)
V
OUT
Output Voltage 7V ≤ V
IN
≤ 40V, 0.1A ≤ I
LOAD
≤ 0.5A 5 V
LM2574 4.800/4.750 V(Min)
5.200/5.250 V(Max)
V
OUT
Output Voltage 7V ≤ V
IN
≤ 60V, 0.1A ≤ I
LOAD
≤ 0.5A 5 4.800/4.750 V(Min)
LM2574HV 5.225/5.275 V(Max)
η Efficiency V
IN
= 12V, I
LOAD
= 0.5A 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. All limits are used to calculate Average Outgoing Quality Level.
(2) External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance.
When the LM2574 is used as shown in the Figure 24 test circuit, system performance will be as shown in system parameters section of
Electrical Characteristics.
LM2574-12, LM2574HV-12 Electrical Characteristics
Specifications with standard type face are for T
J
= 25°C, and those with boldface type apply over full Operating
Temperature Range.
Symbol Parameter Conditions LM2574-12 Units
LM2574HV-12 (Limits)
Typ Limit
(1)
SYSTEM PARAMETERS Test Circuit in Figure 23 and Figure 24,
(2)
V
OUT
Output Voltage V
IN
= 25V, I
LOAD
= 100 mA 12 V
11.76 V(Min)
12.24 V(Max)
V
OUT
Output Voltage 15V ≤ V
IN
≤ 40V, 0.1A ≤ I
LOAD
≤ 0.5A 12 V
LM2574 11.52/11.40 V(Min)
12.48/12.60 V(Max)
V
OUT
Output Voltage 15V ≤ V
IN
≤ 60V, 0.1A ≤ I
LOAD
≤ 0.5A 12 11.52/11.40 V(Min)
LM2574HV 12.54/12.66 V(Max)
η Efficiency V
IN
= 15V, I
LOAD
= 0.5A 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. All limits are used to calculate Average Outgoing Quality Level.
(2) External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance.
When the LM2574 is used as shown in the Figure 24 test circuit, system performance will be as shown in system parameters section of
Electrical Characteristics.
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