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LM2598 数据表(PDF) 4 Page - Texas Instruments

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部件名 LM2598
功能描述  SIMPLE SWITCHER짰 Power Converter 150 kHz 1A Step-Down Voltage Regulator with Features
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LM2598 数据表(HTML) 4 Page - Texas Instruments

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LM2598
SNVS125C – MARCH 1998 – REVISED APRIL 2013
www.ti.com
LM2598-5.0 Electrical Characteristics
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating
Temperature Range.
Symbol
Parameter
Conditions
LM2598-5.0
Units
(Limits)
Typ
Limit
(1)
(2)
SYSTEM PARAMETERS (3) Test Circuit Figure 24
VOUT
Output Voltage
7V
≤ VIN ≤ 40V, 0.1A ≤ ILOAD ≤ 1A
5
V
4.800/4.750
V(min)
5.200/5.250
V(max)
η
Efficiency
VIN = 12V, ILOAD = 1A
82
%
(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 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 LM2598 is used as shown in the Figure 24 test circuit, system performance will be as shown in system parameters of
Electrical Characteristics section.
LM2598-12 Electrical Characteristics
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating
Temperature Range.
Symbol
Parameter
Conditions
LM2598-12
Units
(Limits)
Typ
Limit
(1)
(2)
SYSTEM PARAMETERS (3) Test Circuit Figure 24
VOUT
Output Voltage
15V
≤ VIN ≤ 40V, 0.1A ≤ ILOAD ≤ 1A
12
V
11.52/11.40
V(min)
12.48/12.60
V(max)
η
Efficiency
VIN = 25V, ILOAD = 1A
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 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 LM2598 is used as shown in the Figure 24 test circuit, system performance will be as shown in system parameters of
Electrical Characteristics section.
4
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