Datasheet

LM2596
www.ti.com SNVS124C –NOVEMBER 1999–REVISED APRIL 2013
LM2596-3.3 Electrical Characteristics
Specifications with standard type face are for T
J
= 25°C, and those with boldface type apply over full Operating
Temperature Range
LM2596-3.3
Units
Symbol Parameter Conditions
Typ Limit
(Limits)
(1) (2)
SYSTEM PARAMETERS
(3)
Test Circuit Figure 20
V
OUT
Output Voltage 4.75V ≤ V
IN
≤ 40V, 0.2A ≤ I
LOAD
≤ 3A 3.3 V
3.168/3.135 V(min)
3.432/3.465 V(max)
η Efficiency V
IN
= 12V, I
LOAD
= 3A 73 %
(1) Typical numbers are at 25°C and represent the most likely norm.
(2) 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 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 system performance. When the LM2596 is used as shown in the Figure 20 test circuit, system performance will be
as shown in system parameters of Electrical Characteristics section.
LM2596-5.0 Electrical Characteristics
Specifications with standard type face are for T
J
= 25°C, and those with boldface type apply over full Operating
Temperature Range
LM2596-5.0
Units
Symbol Parameter Conditions
Typ Limit
(Limits)
(1) (2)
SYSTEM PARAMETERS
(3)
Test Circuit Figure 20
V
OUT
Output Voltage 7V ≤ V
IN
≤ 40V, 0.2A ≤ I
LOAD
≤ 3A 5.0 V
4.800/4.750 V(min)
5.200/5.250 V(max)
η Efficiency V
IN
= 12V, I
LOAD
= 3A 80 %
(1) Typical numbers are at 25°C and represent the most likely norm.
(2) 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 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 system performance. When the LM2596 is used as shown in the Figure 20 test circuit, system performance will be
as shown in system parameters of Electrical Characteristics section.
LM2596-12 Electrical Characteristics
Specifications with standard type face are for T
J
= 25°C, and those with boldface type apply over full Operating
Temperature Range
LM2596-12
Units
Symbol Parameter Conditions
Typ Limit
(Limits)
(1) (2)
SYSTEM PARAMETERS
(3)
Test Circuit Figure 20
V
OUT
Output Voltage 15V ≤ V
IN
≤ 40V, 0.2A ≤ I
LOAD
≤ 3A 12.0 V
11.52/11.40 V(min)
12.48/12.60 V(max)
η Efficiency V
IN
= 25V, I
LOAD
= 3A 90 %
(1) Typical numbers are at 25°C and represent the most likely norm.
(2) 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 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 system performance. When the LM2596 is used as shown in the Figure 20 test circuit, system performance will be
as shown in system parameters of Electrical Characteristics section.
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