參數(shù)資料
型號: LM2586
廠商: National Semiconductor Corporation
英文描述: Octal D-type Edge-Triggered Flip-Flops With 3-State Outputs 20-PDIP -40 to 85
中文描述: 第3A激的SIMPLE SWITCHER穩(wěn)壓器,帶有關斷
文件頁數(shù): 5/28頁
文件大?。?/td> 778K
代理商: LM2586
LM2586-ADJ
(Continued)
Symbol
COMMON DEVICE PARAMETERS for all versions
(Note 5)
I
S
Input Supply Current
Parameters
Conditions
Typical
Min
Max
Units
Switch Off (Note 8)
I
SWITCH
= 1.8A
V
SH
= 3V
11
50
16
15.5/
16.5
100/
115
100/
300
mA
mA
μA
I
S/D
Shutdown Input
Supply Current
Input Supply
Undervoltage Lockout
Oscillator Frequency
V
UV
R
LOAD
= 100
3.30
3.05
3.75
V
f
O
Measured at Switch Pin
R
LOAD
= 100
, V
COMP
= 1.0V
Freq. Adj. Pin Open (Pin 1)
R
SET
= 22 k
Measured at Switch Pin
R
LOAD
= 100
V
FEEDBACK
= 1.15V
Upper Limit
(Note 7)
Lower Limit
(Note 8)
(Note 9)
100
85/
75
115/
125
kHz
200
kHz
f
SC
Short-Circuit
Frequency
25
kHz
V
EAO
Error Amplifier
Output Swing
2.8
2.6/
2.4
V
0.25
0.40/
0.55
V
I
EAO
Error Amp
Output Current
(Source or Sink)
Soft Start Current
165
110/
70
260/
320
μA
I
SS
V
FEEDBACK
= 0.92V
V
COMP
= 1.0V
R
LOAD
= 100
(Note 7)
Switch Off
V
SWITCH
= 60V
dV/dT = 1.5V/ns
I
SWITCH
= 3.0A
11.0
8.0/
7.0
17.0/
19.0
μA
D
MAX
Maximum Duty Cycle
98
93/
90
%
I
L
Switch Leakage
Current
Switch Sustaining Voltage
Switch Saturation Voltage
NPN Switch Current Limit
Synchronization
Threshold Voltage
Synchronization
Pin Current
ON/OFF Pin (Pin 1)
Threshold Voltage
ON/OFF Pin (Pin 1)
Current
Thermal Resistance
15
300/
600
μA
V
SUS
V
SAT
I
CL
V
STH
65
V
V
A
V
0.45
4.0
0.75
0.65/
0.9
7.0
0.875/
1.00
3.0
F
SYNC
= 200 kHz
V
COMP
= 1V, V
IN
= 5V
V
IN
= 5V
V
COMP
= 1V, V
SYNC
= V
STH
V
COMP
= 1V
(Note 10)
V
COMP
= 1V
V
SH
= V
SHTH
T Package, Junction to
Ambient (Note 11)
T Package, Junction to
Ambient (Note 12)
T Package, Junction to Case
S Package, Junction to
Ambient (Note 13)
S Package, Junction to
Ambient (Note 14)
S Package, Junction to
Ambient (Note 15)
S Package, Junction to Case
0.625/
0.40
I
SYNC
100
200
μA
V
SHTH
1.6
1.0/
0.8
2.2/
2.4
V
I
SH
40
15/
10
65/
75
μA
θ
JA
65
C/W
θ
JA
45
θ
JC
θ
JA
2
56
θ
JA
35
θ
JA
26
θ
JC
2
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5
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