參數(shù)資料
型號(hào): LM5070
廠商: National Semiconductor Corporation
英文描述: Integrated Power Over Ethernet PD Interface and PWM Controller
中文描述: 集成以太網(wǎng)供電PD接口和PWM控制器
文件頁(yè)數(shù): 4/17頁(yè)
文件大?。?/td> 833K
代理商: LM5070
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
,RTN to V
EE
RSIG to V
IN
UVLO to V
EE
UVLORTN
RCLASS, RCLP to V
EE
ARTN to RTN
V
CC
, OUT to ARTN
All other inputs to ARTN
ESD Rating
-0.3V to 80V
-12V to 0V
-0.3V to 57V
-0.3V to 13V
-0.3V to 7V
-0.3V to 0.3V
-0.3V to 16V
-0.3V to 7V
Human Body Model
Storage Temperature
Junction Temperature
Lead Temperature (Note 2)
Wave (4 seconds)
Infrared (10 seconds)
Vapor Phase (75 seconds)
2000V
-65C to +150C
150C
260C
240C
219C
Operating Ratings
V
IN
voltage
External voltage applied to V
CC
Operating Junction Temperature
1.8V to 75V
8.1V to 15V
-40C to +125C
Electrical Characteristics
(Note 3)
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
Conditions
Powered Interface
IOS
Offset Current
V
IN
<
10.0V
VCLSS(ON)
Signature Resistor Disable /
Classification Current Turn On
VCLSS(OFF) Classification Current Turn Off
V
IN
with respect to V
EE
Classification Voltage
With respect to V
EE
ICLASS
Supply Current During
Classification
IDC
Supply Current During Normal
Operation
UVLO Pin Reference Voltage
V
IN
>
12V
UVLO Hysteresis Current
V
IN
>
UVLO
Softstart Release
RTN falling with respect
to V
EE
Softstart Release Hysteresis
RTN rising with respect
to V
EE
RDS(ON)
PowerFET Resistance
I = 350mA,
V
IN
= 48V
ILEAK
SMPS Bias Current
V
EE
= 0V, V
IN
= RTN =
57V
ILIM
Default Current Limit
V
EE
= 0V, RTN = 3.0V,
Temp = 0C to 85C
ILIM
Default Current Limit
V
EE
= 0V, RTN = 3.0V,
Temp = -40C to 125C
Current Limit Programming
Accuracy
RCLP = 80.6k
Startup Regulator
VccReg
V
CC
Regulation
Open ckt
V
CC
Current Limit
(Note 4)
Min
Typ
Max
Units
10
12.5
V
V
V
IN
with respect to V
EE
10.0
11.5
20.5
1.43
22.0
1.5
0.5
23.0
1.57
1.5
V
V
V
IN
=17V
mA
OUT floating
1
1.9
mA
1.95
8.0
1.2
2.00
10
1.45
2.05
11.5
1.7
V
uA
V
0.8
1.1
1.3
V
1
2.2
100
uA
350
390
420
mA
325
390
420
mA
V
EE
= 0V, RTN = 3.0V,
-20
+20
%
7.5
15
7.8
20
8.1
V
mA
L
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