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LM1577 データシート(PDF) 6 Page - Texas Instruments

部品番号 LM1577
部品情報  LM1577/LM2577 SIMPLE SWITCHER짰 Step-Up Voltage Regulator
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI - Texas Instruments

LM1577 データシート(HTML) 6 Page - Texas Instruments

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LM1577, LM2577
SNOS658D – JUNE 1999 – REVISED APRIL 2013
www.ti.com
Electrical Characteristics—LM1577-15, LM2577-15 (continued)
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, and ISWITCH = 0.
Symbol
Parameter
Conditions
Typical
LM1577-15
LM2577-15
Units
Limit(1)(2)
Limit(3)
(Limits)
Error Amplifier
Upper Limit
2.4
V
Output Swing
VFEEDBACK = 12.0V
2.2/2.0
2.2/2.0
V(min)
Lower Limit
0.3
V
VFEEDBACK = 18.0V
0.4/0.55
0.40/0.55
V(max)
Error Amp
VFEEDBACK = 12.0V to 18.0V
±200
μA
Output Current
VCOMP = 1.0V
±130/±90
±130/±90
μA(min)
±300/±400
±300/±400
μA(max)
ISS
Soft Start Current
VFEEDBACK = 12.0V
5.0
μA
VCOMP = 0V
2.5/1.5
2.5/1.5
μA(min)
7.5/9.5
7.5/9.5
μA(max)
D
Maximum Duty
VCOMP = 1.5V
95
%
Cycle
ISWITCH = 100 mA
93/90
93/90
%(min)
Switch
12.5
A/V
Transconductance
IL
Switch Leakage
VSWITCH = 65V
10
μA
Current
VFEEDBACK = 18.0V
300/600
300/600
μA(max)
(Switch Off)
VSAT
Switch Saturation
ISWITCH = 2.0A
0.5
V
Voltage
VCOMP = 2.0V
0.7/0.9
0.7/0.9
V(max)
(Max Duty Cycle)
NPN Switch
VCOMP = 2.0V
4.3
A
Current Limit
3.7/3.0
3.7/3.0
A(min)
5.3/6.0
5.3/6.0
A(max)
6
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Copyright © 1999–2013, Texas Instruments Incorporated
Product Folder Links: LM1577 LM2577


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