Datasheet

LM2599
SNVS123C –APRIL 1998–REVISED APRIL 2013 www.ti.com
LM2599-5.0 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 LM2599-5.0 Units
(Limits)
Typ Limit
(1) (2)
SYSTEM PARAMETERS
(3)
Test Circuit Figure 24
V
OUT
Output Voltage 7V ≤ V
IN
≤ 40V, 0.2A ≤ I
LOAD
≤ 3A 5 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 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 specified 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 can affect switching regulator system performance.
When the LM2599 is used as shown in the Figure 24 test circuit, system performance will be as shown in system parameters of
Electrical Characteristics section.
LM2599-12 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 LM2599-12 Units
(Limits)
Typ Limit
(1) (2)
SYSTEM PARAMETERS
(3)
Test Circuit Figure 24
V
OUT
Output Voltage 15V ≤ V
IN
≤ 40V, 0.2A ≤ I
LOAD
≤ 3A 12 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 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 specified 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 can affect switching regulator system performance.
When the LM2599 is used as shown in the Figure 24 test circuit, system performance will be as shown in system parameters of
Electrical Characteristics section.
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