參數(shù)資料
型號(hào): LM5020SDX-1
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 穩(wěn)壓器
英文描述: 100V Current Mode PWM Controller
中文描述: SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO8
封裝: 4 X 4 MM, LLP-8
文件頁(yè)數(shù): 4/12頁(yè)
文件大?。?/td> 229K
代理商: LM5020SDX-1
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
RT to GND
All other pins to GND
Power Dissipation
ESD Rating (Note 2)
Human Body Model
-0.3V to 100V
-0.3V to 16V
-0.3V to 5.5V
-0.3V to 7V
Internally Limited
2kV
Storage Temperature
Junction Temperature
-55C to +150C
150C
Operating Ratings
V
IN
Voltage
External Voltage applied to V
CC
Operating Junction Temperature
13V to 90V
8V to 15V
-40C to +125C
Electrical Characteristics
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, and RT = 31.6K
Symbol
Parameter
Conditions
Startup Regulator
V
CC
Reg
V
CC
Regulation
Open ckt
V
CC
Current Limit
(Note 4)
I-V
IN
Startup Regulator Leakage
V
IN
= 100V
I
IN
Shutdown Current
V
UVLO
= 0V, V
CC
= open
V
CC
Supply
V
CC
UVLO (Rising)
Min
Typ
Max
Units
7.4
15
7.7
22
150
250
8.0
V
mA
μA
μA
500
350
VccReg
- 300mV
5.3
VccReg -
100mV
6.0
2
V
V
CC
UVLO (Falling)
Supply Current
6.7
3
V
I
CC
Error Amplifier
GBW
Cload = 0
mA
Gain Bandwidth
DC Gain
Input Voltage
COMP Sink Capability
4
75
1.25
17
MHz
dB
V
mA
V
FB
= COMP
V
FB
= 1.5V COMP= 1V
1.225
5
1.275
Line UVLO Shutdown
Shutdown Threshold
Undervoltage Shutdown
Hysteresis Current Source
1.225
16
1.25
20
1.275
24
V
μA
Current Limit
ILIM Delay to Output
CS step from 0 to 0.6V
Time to onset of OUT
Transition (90%)
30
ns
CS
Cycle by Cycle CS Threshold
Voltage
Leading Edge Blanking Time
CS Sink Impedance (clocked)
0.45
0.5
0.55
V
50
35
ns
55
Soft Start
Softstart Current Source
Softstart to COMP Offset
7
10
0.55
13
0.75
μA
V
0.35
L
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