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LM2594 データシート(PDF) 5 Page - Texas Instruments

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部品番号 LM2594
部品情報  SIMPLE SWITCHER Power Converter 150-kHz 0.5-A Step-Down Voltage Regulator
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
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LM2594, LM2594HV
www.ti.com
SNVS118D – DECEMBER 1999 – REVISED MAY 2016
Product Folder Links: LM2594 LM2594HV
Submit Documentation Feedback
Copyright © 1999–2016, Texas Instruments Incorporated
(1)
Typical numbers are at 25°C and represent the most likely norm.
(2)
All limits ensured at room temperature and at temperature extremes. 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, and voltage programming resistors can affect
switching regulator system performance. When the LM2594xx is used as shown in the Figure 35 test circuit, system performance is as
shown in the system parameters.
7.5 Electrical Characteristics – 3.3 V
Specifications are for TJ = 25°C, VINmax= 40 V for the LM2594 and 60 V for the LM2594HV (unless otherwise noted).
PARAMETER
TEST CONDITIONS
MIN
TYP(1)
MAX(2)
UNIT
SYSTEM PARAMETERS(3) (see Figure 35 for test circuit)
VOUT
Output voltage
4.75 V
≤ VIN ≤ VINmax,
0.1 A
≤ ILOAD ≤ 0.5 A
TJ = 25°C
3.432
3.3
3.168
V
Over full operating temperature
range
3.465
3.135
η
Efficiency
VIN = 12 V, ILOAD = 0.5 A
80%
(1)
Typical numbers are at 25°C and represent the most likely norm.
(2)
All limits ensured at room temperature and at temperature extremes. 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, and voltage programming resistors can affect
switching regulator system performance. When the LM2594xx is used as shown in the Figure 35 test circuit, system performance is as
shown in the system parameters.
7.6 Electrical Characteristics – 5 V
Specifications are for TJ = 25°C (unless otherwise noted).
PARAMETER
TEST CONDITIONS
MIN
TYP(1)
MAX(2)
UNIT
SYSTEM PARAMETERS(3) (see Figure 35 for test circuit)
VOUT
Output voltage
7 V
≤ VIN ≤ VINmax,
0.1 A
≤ ILOAD ≤ 0.5 A
TJ = 25°C
4.8
5
5.2
V
Over full operating temperature range
4.75
5.25
η
Efficiency
VIN = 12 V, ILOAD = 0.5 A
82%
(1)
Typical numbers are at 25°C and represent the most likely norm.
(2)
All limits ensured at room temperature and at temperature extremes. 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, and voltage programming resistors can affect
switching regulator system performance. When the LM2594/LM2594HV is used as shown in the Figure 35 test circuit, system
performance is as shown in the system parameters.
7.7 Electrical Characteristics – 12 V
Specifications are for TJ = 25°C (unless otherwise noted).
PARAMETER
TEST CONDITIONS
MIN
TYP(1)
MAX(2)
UNIT
SYSTEM PARAMETERS(3) (see Figure 35 for test circuit)
VOUT
Output voltage
15 V
≤ VIN ≤ VINmax,
0.1 A
≤ ILOAD ≤ 0.5 A
TJ = 25°C
11.52
12
12.48
V
Over full operating temperature range
11.4
12.6
η
Efficiency
VIN = 25 V, ILOAD = 0.5 A
88%


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