參數(shù)資料
型號(hào)： LM3478
廠(chǎng)商： National Semiconductor Corporation
英文描述： High Efficiency Low-Side N-Channel Controller for Switching Regulator
中文描述： 高效率低側(cè)N溝道開(kāi)關(guān)穩(wěn)壓器控制器
文件頁(yè)數(shù)： 3/21頁(yè)
文件大小： 624K
代理商： LM3478
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 1)
Input Voltage
FB Pin Voltage
FA/SD Pin Voltage
45V
-0.4V
<
V
FB
<
7V
-0.4V
<
V
FA/SD
<
7V
Peak Driver Output Current (
<
10μs)
Power Dissipation
Storage Temperature Range
Junction Temperature
ESD Susceptibilty
Human Body Model (Note 2)
1.0A
Internally Limited
65C to +150C
+150C
2kV
Lead Temperature
MM Package
Vapor Phase (60 sec.)
Infared (15 sec.)
DR Pin Voltage
I
SEN
Pin Voltage
215C
220C
0.4V
≤
VDR
≤
8V
500mV
Operating Ratings
(Note 1)
Supply Voltage
Junction
Temperature Range
Switching Frequency
2.97V
≤
V
IN
≤
40V
40C
≤
T
J
≤
+125C
100kHz
≤
F
SW
≤
1MHz
Electrical Characteristics
Specifications in Standard type face are for T
J
= 25C, and in
bold type face
apply over the full
Operating Temperature
Range
. Unless otherwise specified, V
IN
= 12V, R
FA
= 40k
Symbol
Parameter
Conditions
V
FB
Feedback Voltage
V
COMP
= 1.4V,
2.97
≤
V
IN
≤
40V
Typical
1.26
Limit
Units
V
V(min)
V(max)
%/V
1.2416/
1.228
1.2843/
1.292
V
LINE
Feedback Voltage
Line Regulation
Output Voltage Load
Regulation
Input Undervoltage
Lock-out
Input Undervoltage
Lock-out Hysteresis
2.97
≤
V
IN
≤
40V
0.001
V
LOAD
I
EAO
Source/Sink
±
0.5
%/V (max)
V
UVLO
2.85
2.97
V
V(max)
mV
mV (min)
mV (max)
kHz
kHz(min)
kHz(max)
V
UV(HYS)
170
130
210
F
nom
Nominal Switching
Frequency
R
FA
= 40K
400
360
430
R
DS1 (ON)
Driver Switch On
Resistance (top)
Driver Switch On
Resistance (bottom)
Maximum Drive
Voltage Swing(Note 6)
I
DR
= 0.2A, V
IN
= 5V
16
R
DS2 (ON)
I
DR
= 0.2A
4.5
V
DR (max)
V
IN
<
7.2V
V
IN
≥
7.2V
V
IN
7.2
100
V
D
max
Maximum Duty
Cycle(Note 7)
Minimum On Time
%
T
min
(on)
325
210
600
nsec
nsec(min)
nsec(max)
mA
mA (max)
μA
μA (max)
mV
mV (min)
mV (max)
I
SUPPLY
Supply Current
(switching)
Quiescent Current in
Shutdown Mode
Current Sense
Threshold Voltage
(Note 9)
2.0
3.0
I
Q
V
FA/SYNC/SD
= 5V (Note
10), V
IN
= 5V
V
IN
= 5V
5
10
V
SENSE
165
140/
135
195/
200
L
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM3478_09 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:High Efficiency Low-Side N-Channel Controller for Switching Regulator
LM3478EVAL 功能描述:BOARD EVALUATION LM3478 RoHS:否 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - DC/DC 與 AC/DC（離線(xiàn)）SMPS 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類(lèi)型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):升壓 頻率 - 開(kāi)關(guān):3MHz 板類(lèi)型:完全填充 已供物品:板 已用 IC / 零件:MAX8969
LM3478EVAL/NOPB 功能描述:電源管理IC開(kāi)發(fā)工具 EVAL BOARDFOR LM3478 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
LM3478MA/NOPB 功能描述:DC/DC 開(kāi)關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
LM3478MAX/NOPB 功能描述:DC/DC 開(kāi)關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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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