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LM2585 데이터시트(PDF) 3 Page - Texas Instruments

부품명 LM2585
상세설명  LM2585 SIMPLE SWITCHER짰 3A Flyback Regulator
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홈페이지  http://www.ti.com
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LM2585 데이터시트(HTML) 3 Page - Texas Instruments

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LM2585
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SNVS120F – APRIL 2000 – REVISED APRIL 2013
Electrical Characteristics
LM2585-3.3
Specifications with standard type face are for TJ = 25°C, and those in bold type face apply over full Operating Temperature
Range. Unless otherwise specified, VIN = 5V.
Symbol
Parameters
Conditions
Typical
Min
Max
Units
SYSTEM PARAMETERS Test Circuit of Figure 19 (1)
VOUT
Output Voltage
VIN = 4V to 12V
3.3
3.17/3.14
3.43/3.46
V
ILOAD = 0.3A to 1.2A
ΔVOUT/
Line Regulation
VIN = 4V to 12V
20
50/100
mV
ΔVIN
ILOAD = 0.3A
ΔVOUT/
Load Regulation
VIN = 12V
20
50/100
mV
ΔILOAD
ILOAD = 0.3A to 1.2A
η
Efficiency
VIN = 5V, ILOAD = 0.3A
76
%
UNIQUE DEVICE PARAMETERS(2)
VREF
Output Reference
Measured at Feedback Pin
3.3
3.242/3.234
3.358/3.366
V
Voltage
VCOMP = 1.0V
ΔVREF
Reference Voltage
VIN = 4V to 40V
2.0
mV
Line Regulation
GM
Error Amp
ICOMP = −30 μA to +30 μA
1.193
0.678
2.259
mmho
Transconductance
VCOMP = 1.0V
AVOL
Error Amp
VCOMP = 0.5V to 1.6V
260
151/75
V/V
Voltage Gain
RCOMP = 1.0 MΩ
(3)
(1)
External components such as the diode, inductor, input and output capacitors can affect switching regulator performance. When the
LM2585 is used as shown in Figure 19 and Figure 20, system performance will be as specified by the system parameters.
(2)
All room temperature limits are 100% production tested, and all limits at temperature extremes are specified via correlation using
standard Statistical Quality Control (SQC) methods.
(3)
A 1.0 M
Ω resistor is connected to the compensation pin (which is the error amplifier output) to ensure accuracy in measuring AVOL.
LM2585-5.0
Symbol
Parameters
Conditions
Typical
Min
Max
Units
SYSTEM PARAMETERS Test Circuit of Figure 19 (1)
VOUT
Output Voltage
VIN = 4V to 12V
5.0
4.80/4.75
5.20/5.25
V
ILOAD = 0.3A to 1.1A
ΔVOUT/
Line Regulation
VIN = 4V to 12V
20
50/100
mV
ΔVIN
ILOAD = 0.3A
ΔVOUT/
Load Regulation
VIN = 12V
20
50/100
mV
ΔILOAD
ILOAD = 0.3A to 1.1A
η
Efficiency
VIN = 12V, ILOAD = 0.6A
80
%
UNIQUE DEVICE PARAMETERS(2)
VREF
Output Reference
Measured at Feedback Pin
5.0
4.913/4.900
5.088/5.100
V
Voltage
VCOMP = 1.0V
ΔVREF
Reference Voltage
VIN = 4V to 40V
3.3
mV
Line Regulation
GM
Error Amp
ICOMP = −30 μA to +30 μA
0.750
0.447
1.491
mmho
Transconductance
VCOMP = 1.0V
AVOL
Error Amp
VCOMP = 0.5V to 1.6V
165
99/49
V/V
Voltage Gain
RCOMP = 1.0 MΩ
(3)
(1)
External components such as the diode, inductor, input and output capacitors can affect switching regulator performance. When the
LM2585 is used as shown in Figure 19 and Figure 20, system performance will be as specified by the system parameters.
(2)
All room temperature limits are 100% production tested, and all limits at temperature extremes are specified via correlation using
standard Statistical Quality Control (SQC) methods.
(3)
A 1.0 M
Ω resistor is connected to the compensation pin (which is the error amplifier output) to ensure accuracy in measuring AVOL.
Copyright © 2000–2013, Texas Instruments Incorporated
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