参数资料
型号: LM5009SDX
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 稳压器
英文描述: 150 mA, 100V Step-Down Switching Regulator
中文描述: 0.37 A SWITCHING REGULATOR, DSO8
封装: 4 X 4 MM, EXPOSED PAD, LLP-8
文件页数: 9/14页
文件大小: 647K
代理商: LM5009SDX
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 RTN
-0.3V to 100V
BST to RTN
-0.3V to 114V
SW to RTN (Steady State)
-1V
ESD Rating (Note 5)
Human Body Model
2kV
BST to VCC
100V
BST to SW
14V
VCC to RTN
14V
All Other Inputs to RTN
-0.3 to 7V
Storage Temperature Range
-65C to +150C
Operating Ratings (Note 1)
V
IN
9.5V to 95V
Operating Junction Temperature
40C to + 125C
Electrical Characteristics
Limits in standard type are for T
J = 25C only, and limits in boldface type apply over the junction temperature (TJ) range of
-40C to +125C. Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values
represent the most likely parametric norm at T
J = 25C, and are provided for reference purposes only. Unless otherwise stated,
the following conditions apply: V
IN = 48V, RON = 200k
. See (Note 3)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
CC Supply
V
CC Reg
V
CC Regulator Output
6.6
7
7.4
V
CC Current Limit
9.5
mA
V
CC undervoltage Lockout
Voltage (V
CC increasing)
6.3
V
CC Undervoltage Hysteresis
200
mV
V
CC UVLO Delay (filter)
100mV overdrive
10
s
I
IN Operating Current
Non-Switching, FB = 3V
485
675
A
I
IN Shutdown Current
RON/SD = 0V
76
150
A
Switch Characteristics
Buck Switch Rds(on)
I
TEST = 200mA, (Note 6)
2.0
4.4
Gate Drive UVLO
V
BST VSW Rising
3.4
4.5
5.5
V
Gate Drive UVLO Hysteresis
430
mV
Current Limit
Current Limit Threshold
0.25
0.31
0.37
A
Current Limit Response Time
I
switch Overdrive = 0.1A
Time to Switch Off
400
ns
OFF time generator (test 1)
FB=0V, R
CL = 100K
35
s
OFF time generator (test 2)
FB=2.3V, R
CL = 100K
2.56
s
On Time Generator
T
ON - 1
Vin = 10V
Ron = 200K
2.15
2.77
3.5
s
T
ON - 2
Vin = 95V
Ron = 200K
200
300
420
ns
Remote Shutdown Threshold
Rising
0.40
0.70
1.05
V
Remote Shutdown Hysteresis
35
mV
LM5009
www.national.com
4
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