LM3940數(shù)據(jù)手冊集成電路（IC）的線性+開關穩(wěn)壓器規(guī)格書PDF
| 廠商型號 |
LM3940 |
| 參數(shù)屬性 | LM3940 封裝/外殼為TO-261-4，TO-261AA；包裝為散裝；類別為集成電路（IC）的線性+開關穩(wěn)壓器；產(chǎn)品描述：IC REG LINEAR 3.3V 1A SOT223-4 |
| 功能描述 | 用于 5V 至 3.3V 電壓轉(zhuǎn)換的 1A 低壓降穩(wěn)壓器 |
| 封裝外殼 | TO-261-4，TO-261AA |
| 制造商 | TI Texas Instruments |
| 中文名稱 | 德州儀器 美國德州儀器公司 |
| 數(shù)據(jù)手冊 | |
| 更新時間 | 2025-8-10 19:00:00 |
| 人工找貨 | LM3940價格和庫存，歡迎聯(lián)系客服免費人工找貨 |
LM3940規(guī)格書詳情
描述 Description
The LM3940 is a 1-A low-dropout regulator designed to provide 3.3 V from a 5-V supply.
The LM3940 is ideally suited for systems which contain both 5-V and 3.3-V logic, with prime power provided from a 5-V bus.
Because the LM3940 is a true low dropout regulator, it can hold its 3.3-V output in regulation with input voltages as low as 4.5 V.
The TO-220 package of the LM3940 means that in most applications the full 1 A of load current can be delivered without using an additional heatsink.
The surface mount DDPAK/TO-263 package uses minimum board space, and gives excellent power dissipation capability when soldered to a copper plane on the PC board.
特性 Features
? Input Voltage Range: 4.5 V to 5.5 V
? Output Voltage Specified over Temperature
? Excellent Load Regulation
? Specified 1-A Output Current
? Requires only One External Component
? Built-in Protection against Excess Temperature
? Short-Circuit Protected
技術(shù)參數(shù)
- 制造商編號
：LM3940
- 生產(chǎn)廠家
：TI
- Iout (Max) (A)
：1
- Vin (Max) (V)
：5.5
- Vin (Min) (V)
：4.5
- Vout (Max) (V)
：3.3
- Vout (Min) (V)
：3.3
- Fixed output options (V)
：3.3
- Noise (uVrms)
：150
- Iq (Typ) (mA)
：0.11
- Thermal resistance θJA (°C/W)
：23
- Rating
：Catalog
- Load capacitance (Min) (μF)
：33
- Regulated outputs (#)
：1
- Features
：—
- Accuracy (%)
：2.5
- PSRR @ 100 KHz (dB)
：32
- Dropout voltage (Vdo) (Typ) (mV)
：310
- Operating temperature range (C)
：-40 to 125
| 供應商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
|---|---|---|---|---|---|---|---|
NS |
24+ |
TO220 |
20000 |
全新原廠原裝，進口正品現(xiàn)貨，正規(guī)渠道可含稅?。?/div> |
詢價 | ||
NSC |
23+ |
TO-263 |
9823 |
詢價 | |||
NS |
2016+ |
TO263 |
1000 |
只做原裝,假一罰十,公司可開17%增值稅發(fā)票! |
詢價 | ||
NS |
23+ |
TO220 |
999999 |
原裝正品現(xiàn)貨量大可訂貨 |
詢價 | ||
TI |
24+ |
DDPAK/TO-263|3 |
279100 |
免費送樣原盒原包現(xiàn)貨一手渠道聯(lián)系 |
詢價 | ||
NS |
25+23+ |
TO220 |
46628 |
絕對原裝正品現(xiàn)貨,全新深圳原裝進口現(xiàn)貨 |
詢價 | ||
NS |
22+ |
TO-220 |
1000 |
原裝現(xiàn)貨庫存.價格優(yōu)勢!! |
詢價 | ||
TI/德州儀器 |
23+ |
SOT223-4 |
18204 |
原裝正品代理渠道價格優(yōu)勢 |
詢價 | ||
NS |
24+ |
ZIP3 |
47 |
全新現(xiàn)貨 |
詢價 | ||
TI |
23+ |
TO-263 |
8000 |
原裝正品,假一罰十 |
詢價 |
