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參數(shù)資料
| 型號： | LM5025ASD |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Active Clamp Voltage Mode PWM Controller |
| 中文描述： | 3 A SWITCHING CONTROLLER, 650 kHz SWITCHING FREQ-MAX, DSO16 |
| 封裝： | 5 X 5 MM, LLP-16 |
| 文件頁數(shù)： | 6/16頁 |
| 文件大?。?/td> | 698K |
| 代理商： | LM5025ASD |
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 = 31.3k
, R
SET
= 27.4k
) unless otherwise stated (Note 3)
Symbol
Parameter
Conditions
CS2 Sink Impedance
(Post Fault Discharge)
CS1 and CS2
Leakage Current
100mV
Soft-Start
Soft-start Current
Source Normal
Soft-start Current
Source following a
CS2 event
Oscillator
Frequency1
T
A
= 25C
T
J
= T
low
to T
high
Frequency2
RT = 10.4K
Sync threshold
Min Sync Pulse Width
Sync Frequency
Range
PWM Comparator
Delay to Output
COMP step 5V to 0V
Time to onset of OUT_A
transition low
Duty Cycle Range
COMP to PWM Offset
COMP Open Circuit
Voltage
COMP Short Circuit
Current
Volt x Second Clamp
Ramp Clamp Level
Delta RAMP measured
from onset of OUT_A to
Ramp peak.
COMP = 5V
UVLO Shutdown
Undervoltage
Shutdown Threshold
Undervoltage
Shutdown Hysteresis
Output Section
OUT_A High
Saturation
-10mA,
OUTPUT_A Peak
Current Sink
OUT_A Low
Saturation
10mA,
OUTPUT_A Rise Time
C
gate
= 2.2nF
OUTPUT_A Fall Time
C
gate
= 2.2nF
OUT_B High
Saturation
-10mA,
Min
Typ
55
Max
85
Units
CS2 = 0.6V
CS = CS Threshold -
1
μA
17
22
27
μA
0.5
1
1.5
μA
180
175
510
200
220
225
650
kHz
580
2
kHz
V
ns
kHz
100
160
40
ns
0
80
1.3
5.9
%
V
V
0.7
4.3
1
COMP = 0V
0.6
1
1.4
mA
2.4
2.5
2.6
V
2.44
2.5
2.56
V
16
20
24
μA
MOS Device
@
Iout =
5
10
Bipolar Device
@
Vcc/2
3
A
MOS Device
@
Iout =
6
9
20
15
10
ns
ns
MOS Device
@
Iout =
20
L
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參數(shù)描述 |
|---|---|
| LM5025ASD/NOPB | 功能描述:電壓模式 PWM 控制器 100V Forward Active Clamp RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| LM5025ASDX | 制造商:Texas Instruments 功能描述:Voltage Mode PWM Controller 3A/1A 16-Pin LLP EP T/R |
| LM5025ASDX/NOPB | 功能描述:電壓模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| LM5025B | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Active Clamp Voltage Mode PWM Controller |
| LM5025BMTC | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Active Clamp Voltage Mode PWM Controller |
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