參數(shù)資料
型號： LM3103MH
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： SIMPLE SWITCHER㈢ Synchronous 1MHz 0.75A Step-Down Voltage Regulator
中文描述： SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO16
封裝： PLASTIC, TSSOP-16
文件頁數(shù)： 4/16頁
文件大?。?/td> 304K
代理商： LM3103MH
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 AGND
SW to AGND
SW to AGND (Transient)
VIN to SW
BST to SW
VCC to AGND
FB to AGND
Electrical Characteristics
over the full Operating Junction Temperature (T
J
) range. 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, V
OUT
= 3.3V.
Symbol
Parameter
Start-Up Regulator, V
CC
V
CC
V
CC
output voltage
C
VCC
= 1 μF, no load
V
IN
- V
CC
V
IN
- V
CC
dropout voltage (Note 4)
I
CC
= 2mA
I
CC
= 10mA
V
CC-UVLO
V
CC
under-voltage lockout threshold
(UVLO)
V
CC-UVLO-HYS
V
CC
UVLO hysteresis
V
IN
decreasing
I
IN
I
IN
operating current
No switching, V
FB
= 1V
I
IN-SD
I
IN
operating current, Device shutdown
V
EN
= 0V
I
VCC
V
CC
current limit
V
CC
= 0V
Switching Characteristics
R
DS-UP-ON
Main MOSFET R
DS(on)
R
DS- DN-ON
Syn. MOSFET R
DS(on)
Soft-start
I
SS
SS pin source current
V
SS
= 0V
Current Limit
I
CL
Syn. MOSFET current limit threshold
ON/OFF Timer
t
on
ON timer pulse width
V
IN
= 10V, R
ON
= 33 k
V
IN
= 18V, R
ON
= 33 k
t
on-MIN
ON timer minimum pulse width
t
off
OFF timer pulse width
Enable Input
V
EN
EN Pin input threshold
V
EN
rising
V
EN-HYS
Enable threshold hysteresis
V
EN
falling
I
EN
Enable Pull-up Current
V
EN
= 0V
Regulation and Over-Voltage Comparator
V
FB
In-regulation feedback voltage
T
J
= 40°C to +125°C
V
FB-OV
Feedback over-voltage threshold
I
FB
-0.3V to 43.5V
-0.3V to 43.5V
-2V (< 100ns)
-0.3V to 43.5V
-0.3V to 7V
-0.3V to 7V
-0.3V to 5V
All Other Inputs to AGND
ESD Rating (Note 2)
Human Body Model
Storage Temperature Range
Junction Temperature (T
J
)
-0.3V to 7V
±2kV
-65°C to +150°C
150°C
Operating Ratings
(Note 1)
Supply Voltage Range (VIN)
Junction Temperature Range (T
J
)
Thermal Resistance (
θ
JA
) (Note 3)
4.5V to 42V
40°C to +125°C
35°C/W
Specifications with standard type are for T
J
= 25°C only; limits in
boldface type
apply
Conditions
Min
Typ
Max
Units
5.6
6.0
6.2
150
500
4.1
V
55
mV
235
V
IN
increasing
3.5
3.7
V
275
mV
1.0
1.25
40
42
mA
20
μA
20
33
mA
0.370
0.7
0.4
0.220
45
70
95
μA
0.9
A
0.350
μs
0.170
100
ns
240
ns
1.6
1.85
V
230
mV
1
μA
0.588
0.655
0.6
0.612
0.705
V
0.680
V
1
nA
www.national.com
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM3103MH/NOPB 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 SYNC 1MHZ 0.75A STEP DOWN VLTG REG RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
LM3103MHX 制造商:Texas Instruments 功能描述:Conv DC-DC Single Step Down 4.5V to 42V 16-Pin TSSOP EP T/R
LM3103MHX/NOPB 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
LM310H 制造商:National Semiconductor 功能描述:310 NSC'83 SB51C 制造商:Texas Instruments 功能描述: 制造商:Rochester Electronics LLC 功能描述:
LM310H/A+ 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Buffer/Voltage Follower
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