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參數(shù)資料
| 型號： | LM3475MFX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Hysteretic PFET Buck Controller |
| 中文描述： | SWITCHING REGULATOR, 2000 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | PLASTIC, SOT-23, 5 PIN |
| 文件頁數(shù)： | 3/14頁 |
| 文件大?。?/td> | 305K |
| 代理商： | LM3475MFX |
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
PGATE
FB
EN
Storage Temperature
Power Dissipation (Note 2)
ESD Susceptibilty
Human Body Model (Note 3)
0.3V to 16V
0.3V to 16V
0.3V to 5V
0.3V to 16V
65C to 150C
440mW
2.5kV
Lead Temperature
Vapor Phase (60 sec.)
Infared (15 sec.)
215C
220C
Operating Ratings
(Note 1)
Supply Voltage
Operating Junction
Temperature
2.7V to 10V
40C to +125C
Electrical Characteristics
Specifications in Standard type face are for T
J
= 25C, and in
bold type face
apply over the full
Operating Temperature
Range
(T
J
= 40C to +125C). Unless otherwise specified, V
IN
= EN = 5.0V. Datasheet min/max specification limits are guar-
anteed by design, test, or statistical analysis.
Symbol
Parameter
Quiescent Current
Conditions
EN = V
IN
(PGATE
Open)
EN = 0V
Min
Typ
Max
Unit
I
Q
170
260
320
μA
4
7
10
V
FB
%
V
FB
/
V
IN
Feedback Voltage
Feedback Voltage
Line Regulation
Comparator
Hysteresis
FB Bias Current
Enable Threshold
Voltage
Hysteresis
Enable Leakage
Current
0.788
0.8
0.812
V
2.7V
<
V
IN
<
10V
0.01
%/V
V
HYST
2.7V
<
V
IN
<
10V
40C to +125C
21
21
50
28
32
600
mV
I
FB
nA
Vth
EN
Increasing
1.2
1.5
1.8
V
365
mV
I
EN
EN = 10V
.025
1
μA
R
PGATE
Driver Resistance
Source
I
SOURCE
= 100mA
Sink
I
Sink
= 100mA
Source
V
PGATE
= 3.5V
C
PGATE
= 1nF
Sink
V
PGATE
= 3.5V
C
PGATE
= 1nF
2.7V
<
V
IN
<
10V
(EN Rising)
PGATE Open
Measured at the FB
Pin
2.8
1.8
I
PGATE
Driver Output Current
0.475
A
1.0
T
SS
Soft-Start Time
4
ms
T
ONMIN
V
UVD
Minimum On-Time
Under Voltage
Detection
180
ns
0.487
0.56
0.613
V
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3475MFX/NOPB | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| LM3477 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:High Efficiency High-Side N-Channel Controller for Switching Regulator |
| LM3477A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:High Efficiency High-Side N-Channel Controller for Switching Regulator |
| LM3477AMM | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| LM3477AMM/NOPB | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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