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| 型號(hào)： | LMZ14203EXTTZX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PSSO7 |
| 封裝： | 10.16 X 13.77 MM, 4.57 MM HEIGHT, ROHS COMPLIANT, TO-PMOD, 7 PIN |
| 文件頁(yè)數(shù)： | 14/19頁(yè) |
| 文件大小： | 4031K |
| 代理商： | LMZ14203EXTTZX |
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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 43.5V
EN, FB, SS to GND
-0.3V to 7V
Junction Temperature
150°C
Storage Temperature Range
-65°C to 150°C
ESD Susceptibility(Note 2)
± 2 kV
For soldering specifications:
see product folder at www.national.com and
www.national.com/ms/MS/MS-SOLDERING.pdf
Operating Ratings (Note 1)
V
IN
6V to 42V
EN
0V to 6.5V
Operation Junction Temperature
55°C to 125°C
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 -55°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 = 24V, Vout = 3.3V
Symbol
Parameter
Conditions
Min
Typ
Max
Units
SYSTEM PARAMETERS
Enable Control
V
EN
EN threshold trip point
V
EN rising
1.1
1.18
1.26
V
EN-HYS
EN threshold hysteresis
V
EN falling
90
mV
Soft-Start
I
SS
SS source current
V
SS = 0V
4.9
8
11
A
I
SS-DIS
SS discharge current
-200
A
Current Limit
I
CL
Current limit threshold
d.c. average
V
IN= 12V to 24V
3.15
4.2
5.3
A
ON/OFF Timer
t
ON-MIN
ON timer minimum pulse width
150
ns
t
OFF
OFF timer pulse width
260
ns
Regulation and Over-Voltage Comparator
V
FB
In-regulation feedback voltage
V
SS >+ 0.8V
T
J = -55°C to 125°C
I
O = 3A
0.784
0.804
0.825
V
SS >+ 0.8V
T
J = 25°C
I
O = 10 mA
0.786
0.802
0.818
V
FB-OV
Feedback over-voltage
protection threshold
0.92
V
I
FB
Feedback input bias current
5
nA
I
Q
Non Switching Input Current
V
FB= 0.86V
1
mA
I
SD
Shut Down Quiescent Current
V
EN= 0V
25
μA
Thermal Characteristics
T
SD
Thermal Shutdown
Rising
165
°C
T
SD-HYST
Thermal shutdown hysteresis
Falling
15
°C
θ
JA
Junction to Ambient
4 layer JEDEC Printed Circuit Board,
100 vias, No air flow
19.3
°C/W
2 layer JEDEC Printed Circuit Board, No
air flow
21.5
°C/W
θ
JC
Junction to Case
No air flow
1.9
°C/W
PERFORMANCE PARAMETERS
ΔV
O
Output Voltage Ripple
8
mV
PP
ΔV
O/ΔVIN
Line Regulation
V
IN = 12V to 42V, IO= 3A
.01
%
ΔV
O/IOUT
Load Regulation
V
IN = 24V
1.5
mV/A
www.national.com
4
LMZ14203EXT
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| LMZ14203EXTTZ | SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PSSO7 |
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| LMZ14203EXTTZ/NOPB | SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PSSO7 |
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相關(guān)代理商/技術(shù)參數(shù) |
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| LMZ14203EXTTZX/NOPB | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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 |
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| LMZ14203H_1106 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:3A SIMPLE SWITCHER? Power Module for High Output Voltage |
| LMZ14203HEVAL/NOPB | 功能描述:電源管理IC開(kāi)發(fā)工具 LMZ14203H EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LMZ14203HTZ | 制造商:Texas Instruments 功能描述:POWER MODULE, 42V, 3A, 7TOPMOD 制造商:Texas Instruments 功能描述:POWER MODULE, 42V, 3A, 7TOPMOD; Primary Input Voltage:42V; No. of Outputs:1; Output Voltage:30V; Output Current:3A; Voltage Regulator Case Style:TO-PMOD; No. of Pins:7; Operating Temperature Min:-40C; Operating Temperature ;RoHS Compliant: Yes |
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