參數(shù)資料
型號(hào)： LM5026SDX
廠(chǎng)商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 穩(wěn)壓器
英文描述： Active Clamp Current Mode PWM Controller
中文描述： 3 A SWITCHING CONTROLLER, 660 kHz SWITCHING FREQ-MAX, DSO16
封裝： 5 X 5 MM, EXPOSED PAD, LLP-16
文件頁(yè)數(shù)： 5/23頁(yè)
文件大?。?/td> 936K
代理商： LM5026SDX
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN
to GND
V
CC
to GND
CS to GND
COMP Input Current
All other inputs to GND
ESD Rating (Note 2)
-0.3V to 105V
-0.3V to 16V
-0.3 to 1.0V
10mA
-0.3 to 7V
Human Body Model
Storage Temperature Range
Junction Temperature
2kV
-65C to 150C
150C
Operating Ratings
(Note 1)
V
IN
Voltage
External Voltage Applied to V
CC
Operating Junction Temperature
13 to 100V
8V to 15V
-40C to +125C
Electrical Characteristics
Specifications with standard typeface are for T
J
= 25C, and those with
boldface
type apply over full
Operating Junction
Temperature range
. V
IN
= 48V, V
CC
= 10V, RT = 30.0k
, R
SET
= 34.8k
) unless otherwise stated (Note 3)
Symbol
Parameter
Conditions
Startup Regulator
V
CC
Reg
V
CC
Regulation
No Load
V
CC
Current Limit
(Note 4)
I-V
IN
Startup Regulator
Leakage (external
Vcc Supply)
Shutdown Current
(Iin)
V
CC
Supply
V
CC
Under-voltage
Lockout Voltage
(positive going V
cc
)
V
CC
Under-voltage
Hysteresis
V
CC
Supply Current
(I
CC
)
Reference Supply
V
REF
Ref Voltage
I
REF
= 0 mA
Ref Voltage
Regulation
Ref Current Limit
UVLO Shutdown/Standby
Undervoltage
Shutdown Threshold
Undervoltage
Shutdown Hysteresis
Undervoltage
Standby Threshold
Undervoltage
Standby Hysteresis
Current Source
Current Limit
Cycle by Cycle
Threshold Voltage
ILIM Delay to Output
CS step from 0 to 0.6V Time
to onset of OUT transition
(90%) Cgate=0
Leading Edge
Blanking Time
Min
Typ
Max
Units
7.3
20
7.6
25
165
7.9
V
mA
μA
V
IN
= 100V
500
UVLO = 0V
350
450
μA
V
CC
Reg -
220mV
V
CC
Reg -
120mV
V
1.0
1.5
2.0
V
C
gate
= 0, UVLO = 1.3V
4.2
mA
4.85
5
25
5.15
50
V
I
REF
= 0 to 10mA
mV
10
20
mA
0.3
0.4
0.5
V
0.1
V
1.21
1.25
1.29
V
16
20
24
μA
0.45
0.5
0.55
V
40
ns
70
100
130
ns
L
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