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参数资料
型号： LM3151MHE-2.5
厂商： NATIONAL SEMICONDUCTOR CORP
元件分类： 稳压器
英文描述： SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDSO14
封装： TSSOP-14
文件页数： 15/20页
文件大小： 479K
代理商： LM3151MHE-2.5
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
VIN to GND
-0.3V to 47V
SW to GND
-3V to 47V
BST to SW
-0.3V to 7V
BST to GND
-0.3V to 52V
All Other Inputs to GND
-0.3V to 7V
ESD Rating (Note 2)
2kV
Storage Temperature Range
-65°C to +150°C
Operating Ratings (Note 1)
V
IN
6V to 42V
Junction Temperature Range (T
J)
40°C to + 125°C
EN
0V to 5V
Electrical Characteristics Limits in standard type are for T
J = 25°C only; limits in boldface type apply over the
junction temperature (T
J) range of -40°C to +125°C. Minimum and Maximum limits are guaranteed through test, design, or statistical
correlation. Typical values represent the most likely parametric norm at T
J = 25°C, and are provided for reference purposes only.
Unless otherwise stated the following conditions apply: V
IN = 18V.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Start-Up Regulator, VCC
V
CC
C
VCC = 1 F, 0 mA to 40 mA
5.65
5.95
6.25
V
IN - VCC
V
IN - VCC Dropout Voltage
I
VCC = 2 mA, Vin = 5.5V
40
mV
I
VCC = 30 mA, Vin = 5.5V
330
I
VCCL
V
CC Current Limit (Note 3)
V
CC = 0V
65
100
mA
VCC
UVLO
VCC Under-voltage Lockout threshold
(UVLO)
VCC Increasing
4.75
5.1
5.40
V
CC-UVLO-HYS
V
CC UVLO Hysteresis
VCC Decreasing
475
mV
t
CC-UVLO-D
V
CC UVLO Filter Delay
3
s
I
IN
Input Operating Current
No Switching
3.6
5.2
mA
I
IN-SD
Input Operating Current, Device
Shutdown
V
EN = 0V
32
55
A
GATE Drive
I
Q-BST
Boost Pin Leakage
V
BST – VSW = 6V
2
nA
R
DS-HG-Pull-Up
HG Drive Pull–Up On-Resistance
I
HG Source = 200 mA
5
R
DS-HG-Pull-Down
HG Drive Pull–Down On-Resistance
I
HG Sink = 200 mA
3.4
R
DS-LG-Pull-Up
LG Drive Pull–Up On-Resistance
I
LG Source = 200 mA
3.4
R
DS-LG-Pull-Down
LG Drive Pull–Down On-Resistance
I
LG Sink = 200 mA
2
Soft-Start
I
SS
SS Pin Source Current
V
SS = 0V
5.9
7.7
9.5
mA
I
SS-DIS
SS Pin Discharge Current
200
A
Current Limit
V
CL
Current Limit Voltage Threshold
175
200
225
mV
ON/OFF Timer
t
ON-MIN
ON Timer Minimum Pulse Width
200
ns
t
OFF
OFF Timer Minimum Pulse Width
370
525
ns
Enable Input
V
EN
EN Pin Input Threshold Trip Point
V
EN Rising
1.14
1.20
1.26
V
EN-HYS
EN Pin threshold Hysteresis
V
EN Falling
120
mV
www.national.com
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LM3151/LM3152/LM3153
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