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參數(shù)資料
| 型號(hào)： | LM5026SDX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 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 |
| 文件頁數(shù)： | 6/23頁 |
| 文件大?。?/td> | 936K |
| 代理商： | LM5026SDX |
Electrical Characteristics
(Continued)
Specifications with standard typeface are for T
= 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
CS Sink Impedance
(clocked)
Over Current Restart
Restart Threshold
Fault Charging
Current
Discharging Current
Soft-Start
Soft-start Current
Source
Soft-stop Current
Sink
Soft-start Current
Source following a
restart event
Oscillator
Frequency1
RT = 30.0 k
Frequency2
RT = 10.0 k
SYNC Source
Current
SYNC Sink
Impedance
controllers minimum
Sync Threshold
(falling)
Sync Pulse Width
Minimum
PWM Comparator
Delay to Output
CS stepped, Time to onset of
OUT_A transition low
Mimimum Duty
Cycle
Maximum Duty
Cycle Limit 1
V
DCL
= 2.5V
Maximum Duty
Cycle Limit 2
V
DCL
= V
RT
x 0.875
Maximum Duty
Cycle Limit 3
V
DCL
= 2.5V
SS to PWM Offset
COMP Input
Impedance
Slope Compensation
Amplitude
comparator to CS
Output Section
OUT_A High
Saturation
OUTPUT_A Peak
Current Sink
OUT_A Low
Saturation
Min
Typ
30
Max
50
Units
I
CS
= 10mA
2.4
7.5
2.55
10
2.7
12.5
V
μA
7.5
10
12.5
μA
38
50
58
μA
38
50
58
0.6
1
1.3
180
520
200
590
200
220
660
kHz
kHz
μA
Can sync up to 5 like
100
1.4
V
15
ns
40
ns
I
COMP
= 1mA
0
%
UVLO=1.3V, COMP = open,
80
%
UVLO=1.3V, COMP = open,
70
%
UVLO=2.92V, COMP = open,
40
%
1.4
1700
V
Small signal impedance
Delta increase at PWM
75
90
115
mV
MOS Device
@
Iout = -10mA,
5
10
Bipolar Device
@
Vcc/2
3
A
MOS Device
@
Iout = 10mA,
6
9
L
www.national.com
6
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| LM5026SDX/NOPB | 功能描述:電流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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