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參數(shù)資料
| 型號： | LM2743 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | N-Channel FET Synchronous Buck Regulator Controller for Conversion from 3.3V |
| 中文描述： | N溝道場效應管同步降壓穩(wěn)壓控制器，用于從3.3V轉(zhuǎn)換 |
| 文件頁數(shù)： | 3/23頁 |
| 文件大小： | 653K |
| 代理商： | LM2743 |
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
CC
BOOT Voltage
All other pins
Junction Temperature
Storage Temperature
Soldering Information
7V
21V
V
CC
+ 0.3V
150C
65C to 150C
Lead Temperature
(soldering, 10sec)
Infrared or Convection (20sec)
ESD Rating (Note 3)
260C
235C
2 kV
Operating Ratings
IC Input Voltage (V
CC
)
Junction Temperature Range
Thermal Resistance (
θ
JA
)
3V to 6V
40C to +125C
155C/W
Electrical Characteristics
V
CC
= 3.3V unless otherwise indicated. Typicals and limits appearing in plain type apply for T
A
= T
J
= +25C. Limits appearing in
boldface type apply over full Operating Temperature Range. Datasheet min/max specification limits are guaranteed by design,
test, or statistical analysis.
Symbol
Parameter
Conditions
Min
0.612
0.612
Typ
0.6
0.6
2.76
2.42
Max
0.588
0.588
Units
V
FB
FB Pin Voltage
V
CC
= 3.3V
V
CC
= 5V
Rising
Falling
V
CC
= 3.3V, SD = 3.3V
Fsw = 600kHz
V
CC
= 5V, SD = 3.3V
Fsw = 600kHz
V
CC
= 3.3V, SD = 0V
V
V
ON
UVLO Thresholds
V
I
Q_VCC
Operating V
CC
Current
1
1.5
2.1
mA
1
1.7
2.1
Shutdown V
CC
Current
(Note 4)
PWGD Pin Response Time
PWGD Pin Response Time
SS Pin Source Current
SS Pin Sink Current During Over
Current
I
SEN
Pin Source Current Trip
Point
ERROR AMPLIFIER
GBW
Error Amplifier Unity Gain
Bandwidth
G
Error Amplifier DC Gain
SR
Error Amplifier Slew Rate
I
EAO
EAO Pin Current Sourcing and
Sinking Capability
V
EA
Error Amplifier Maximum Swing
0
110
185
μA
t
PWGD1
t
PWGD2
I
SS-ON
I
SS-OC
FB Voltage Going Up
FB Voltage Going Down
SS Voltage = 0V
SS Voltage = 0V
6
6
10
μs
μs
μA
7
14
90
μA
I
SEN-TH
25
40
55
μA
9
MHz
106
3.2
2.6
9.2
0
2
dB
V/μs
V
EAO
= 1.5, FB = 0.55V
V
EAO
= 1.5, FB = 0.65V
Minimum
Maximum
mA
V
L
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM2743-19AEVAL | 功能描述:電源管理IC開發(fā)工具 LM2743 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM2743EVAL | 功能描述:BOARD EVALUATION LM2743 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - DC/DC 與 AC/DC（離線）SMPS 系列:PowerWise® 產(chǎn)品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型: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)壓器拓撲結(jié)構:升壓 頻率 - 開關:3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| LM2743EVAL/NOPB | 功能描述:電源管理IC開發(fā)工具 LM2743 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM2743MTC | 功能描述:DC/DC 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 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 安裝風格: 封裝 / 箱體:CPAK |
| LM2743MTC/NOPB | 功能描述:DC/DC 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 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 安裝風格: 封裝 / 箱體:CPAK |
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