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參數(shù)資料
| 型號： | LM5071MTX-80 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Power Over Ethernet PD Controller with Auxiliary Power Power Over Ethernet PD Controller with Auxiliary Power |
| 中文描述： | SWITCHING CONTROLLER, 665 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | PLASTIC, TSSOP-16 |
| 文件頁數(shù)： | 5/18頁 |
| 文件大?。?/td> | 857K |
| 代理商： | LM5071MTX-80 |
Electrical Characteristics
(Note 3) (Continued)
Specifications in standard type face are for T
J
= +25C and those in
boldface type
apply over the full operating junction tem-
perature range. Unless otherwise specified: V
IN
= 48V, V
CC
= 10V, RT = 30.3k
.
Symbol
Parameter
V
CC
Supply
V
CC
UVLO (Rising)
Conditions
Min
Typ
Max
Units
VccReg
–
300mV
5.9
VccReg –
100mV
V
CC
UVLO (Falling)
Supply Current (Icc)
6.25
1.5
6.6
3
V
Cload = 0
mA
Error Amplifier
GBW
Gain Bandwidth
DC Gain
Input Voltage
4
75
MHz
dB
V
FB = COMP
1.219
1.212
5
1.281
1.288
COMP Sink Capability
FB=1.5V COMP=1V
20
mA
Current Limit
ILIM Delay to Output
CS step from 0 to 0.6V, time to
onset of OUT transition (90%)
20
ns
Cycle by Cycle Current Limit
Threshold Voltage
Leading Edge Blanking Time
CS Sink Impedance (clocked)
0.44
0.5
0.56
V
55
25
ns
55
Softstart
Softstart Current Source
7
10
13
uA
Oscillator
(Note 5)
Frequency1
(RT = 30.3K)
Frequency2
(RT = 10.5K)
Sync threshold
175
200
225
KHz
505
580
665
KHz
3.1
3.8
V
PWM Comparator
Delay to Output
COMP set to 2V
CS stepped 0 to 0.4V, time to
onset of OUT transition low
COMP=0V
25
ns
Min Duty Cycle
Max Duty Cycle (-80 Device)
Max Duty Cycle (-50 Device)
COMP to PWM Comparator
Gain
COMP Open Circuit Voltage
COMP Short Circuit Current
0
%
%
%
80
50
0.33
4.5
0.6
5.4
1.1
6.3
1.5
V
COMP= 0V
mA
Slope Compensation
Slope Comp Amplitude
(LM5071-80 Device Only)
Delta increase at PWM
Comparator to CS
105
mV
Output Section
Output High Saturation
I
out
= 50mA,
V
CC
- V
OUT
I
out
= 100mA
Cload = 1nF
Cload = 1nF
0.25
0.75
V
Output Low Saturation
Rise time
Fall time
0.25
15
15
0.75
V
ns
ns
L
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| LM5071MTX-80/NOPB | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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| LM5072EVAL/NOPB | 功能描述:電源管理IC開發(fā)工具 LM5072 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM5072MH-50 | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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