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LM3100MH Arkusz danych(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Numer części LM3100MH
Szczegółowy opis  SIMPLE SWITCHER짰 Synchronous 1MHz 1.5A Step-Down Voltage Regulator
Download  15 Pages
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Producent  NSC [National Semiconductor (TI)]
Strona internetowa  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM3100MH Arkusz danych(HTML) 4 Page - National Semiconductor (TI)

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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, RON to GND
-0.3V to 40V
SW to GND
-0.3V to 40V
SW to GND (Transient)
-2V (< 100ns)
VIN to SW
-0.3V to 40V
BST to SW
-0.3V to 7V
All Other Inputs to GND
-0.3V to 7V
ESD Rating (Note 2)
Human Body Model
±2kV
Storage Temperature Range
-65˚C to +150˚C
Junction Temperature (T
J)
150˚C
Operating Ratings (Note 1)
Supply Voltage Range (VIN)
4.5V to 36V
Junction Temperature Range (T
J)
−40˚C to + 125˚C
Thermal Resistance (
θ
JC) (Note 3)
6.5˚C/W
Electrical Charateristics Specifications with standard type are for T
J = 25˚C only; limits in boldface type ap-
ply over the full Operating Junction Temperature (T
J) range. Minimum and Maximum limits are guaranteed through test, de-
sign, or statistical correlation. Typical values represent the most likely parametric norm at T
J = 25˚C, and are provided for ref-
erence purposes only. Unless otherwise stated the following conditions apply: V
IN = 18V, VOUT = 3.3V.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Start-Up Regulator, V
CC
V
CC
V
CC output voltage
C
CC = 680nF, no load
5.0
6.0
7.2
V
V
IN -VCC
V
IN -VCC dropout voltage
I
CC = 2mA
50
140
mV
I
CC = 20mA
350
570
I
VCCL
V
CC current limit (Note 4)
V
CC =0V
40
65
mA
V
CC-UVLO
V
CC under-voltage lockout threshold
(UVLO)
V
IN increasing
3.6
3.75
3.85
V
V
CC-UVLO-HYS
V
CC UVLO hysteresis
V
IN decreasing
130
mV
t
VCC-UVLO-D
V
CC UVLO filter delay
3
µs
I
IN
I
IN operating current
No switching, V
FB = 1V
0.7
1
mA
I
IN-SD
I
IN operating current, Device shutdown
V
EN =0V
17
30
µA
Switching Characteristics
R
DS-UP-ON
Main MOSFET Rds(on)
0.18
0.35
R
DS- DN-ON
Syn. MOSFET Rds(on)
0.11
0.2
V
G-UVLO
Gate drive voltage UVLO
V
BST -VSW increasing
3.3
4
V
Soft-start
I
SS
SS pin source current
V
SS = 0.5V
6
8
9.8
µA
Current Limit
I
CL
Syn. MOSFET current limit threshold
1.9
A
ON/OFF Timer
t
ON
ON timer pulse width
V
IN = 10V, RON = 100 k
1.38
µs
V
IN = 30V, RON = 100 k
0.47
t
ON-MIN
ON timer minimum pulse width
200
ns
t
OFF
OFF timer pulse width
260
ns
Enable Input
V
EN
EN Pin input threshold
V
EN rising
1.236
1.26
1.285
V
V
EN-HYS
Enable threshold hysteresis
V
EN falling
90
mV
Regulation and Over-Voltage Comparator
V
FB
In-regulation feedback voltage
V
SS
≥ 0.8V
T
J = −40˚C to + 125˚C
0.784
0.8
0.816
V
V
SS
≥ 0.8V
T
J = 0˚C to + 125˚C
0.788
0.812
V
FB-OV
Feedback over-voltage threshold
0.894
0.920
0.940
V
I
FB
5
100
nA
Thermal Shutdown
T
SD
Thermal shutdown temperature
T
J rising
165
˚C
www.national.com
4


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