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LM3940IS-3.3
IC REG LIN 3.3V 1A DDPAK/TO263-3
- メーカー
- Mfr。パート #LM3940IS-3.3
- パッケージ TO-263 (KTT)-3
- データシート
- 在庫中7027
100% オリジナル &新しい
出荷の準備ができている24時間
365日の保証
RFQおよびもっと割引を得る
仕様
| Package | Tube |
| ProductStatus | Not For New Designs |
| OutputConfiguration | Positive |
| OutputType | Fixed |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 7.5V |
| Voltage-Output(Min/Fixed) | 3.3V |
| VoltageDropout(Max) | 0.2V @ 100mA |
| Current-Output | 1A |
| ProtectionFeatures | Over Temperature, Short Circuit |
| OperatingTemperature | -40°C ~ 125°C |
| MountingType | Surface Mount |
| Package/Case | TO-263-4, D²Pak (3 Leads + Tab), TO-263AA |
概要
Description
LM3940IS-3.3 is a fixed 3.3 V low‑dropout regulator (LDO) from TI/National. It provides a stable 3.3 V rail from a higher input supply for digital logic and microcontrollers.
Key points:
- Fixed output: 3.3 V
- Input range: up to about 26 V (includes automotive-type transients with proper input filtering)
- Output current: typically up to ~1 A
- Dropout: roughly 0.4–0.5 V at higher load
- Protections: current limit and thermal/shutdown protection
- Package: IS (surface-mount, 3-terminal; pinout depends on package—check the datasheet)
Common uses: automotive and general embedded systems needing a reliable 3.3 V supply from higher-voltage sources.
Note: for exact electrical specs, package details, and pinout, consult the LM3940IS-3.3 datasheet.
Key points:
- Fixed output: 3.3 V
- Input range: up to about 26 V (includes automotive-type transients with proper input filtering)
- Output current: typically up to ~1 A
- Dropout: roughly 0.4–0.5 V at higher load
- Protections: current limit and thermal/shutdown protection
- Package: IS (surface-mount, 3-terminal; pinout depends on package—check the datasheet)
Common uses: automotive and general embedded systems needing a reliable 3.3 V supply from higher-voltage sources.
Note: for exact electrical specs, package details, and pinout, consult the LM3940IS-3.3 datasheet.
Features
- Fixed 3.3 V output
- 1 A maximum output current
- Low dropout regulator (typical dropout ~0.5 V at full load)
- Wide input range (suitable for automotive environments; up to ~26 V)
- Internal current limit and thermal/shutdown protection
- Safe-area protection
- Requires external output capacitor for stability (low ESR, typically around 22 µF) plus input decoupling
- Package: IS (surface-mount) format
- 1 A maximum output current
- Low dropout regulator (typical dropout ~0.5 V at full load)
- Wide input range (suitable for automotive environments; up to ~26 V)
- Internal current limit and thermal/shutdown protection
- Safe-area protection
- Requires external output capacitor for stability (low ESR, typically around 22 µF) plus input decoupling
- Package: IS (surface-mount) format
Package
SOT-223 surface-mount package.
Pinout
- Pin count: 3 pins
- Function: Fixed 3.3V low-dropout regulator (LDO). It takes a higher input voltage and provides a regulated 3.3V output with a ground pin. Pin order varies by package; typically Vin, GND, Vout. Check the datasheet for the exact pinout in your package.
- Function: Fixed 3.3V low-dropout regulator (LDO). It takes a higher input voltage and provides a regulated 3.3V output with a ground pin. Pin order varies by package; typically Vin, GND, Vout. Check the datasheet for the exact pinout in your package.
Manufacturer
- Manufacturer: Texas Instruments (TI).
- About the company: TI is a multinational American semiconductor company that designs and manufactures analog and embedded processing integrated circuits; it acquired National Semiconductor (the original LM3940 maker) in 2011.
- About the company: TI is a multinational American semiconductor company that designs and manufactures analog and embedded processing integrated circuits; it acquired National Semiconductor (the original LM3940 maker) in 2011.
Application
- Fixed 3.3V low-dropout regulator
- Powers 3.3V logic for MCUs, memory, DSPs, and analog ICs (ADC/DAC)
- Local 3.3V rail on embedded boards and development kits
- Automotive and industrial electronics needing a stable 3.3V supply
- Battery-powered/portable devices requiring a compact, efficient 3.3V regulator
- Powers 3.3V logic for MCUs, memory, DSPs, and analog ICs (ADC/DAC)
- Local 3.3V rail on embedded boards and development kits
- Automotive and industrial electronics needing a stable 3.3V supply
- Battery-powered/portable devices requiring a compact, efficient 3.3V regulator
出荷
出荷方法私たち
DHL、FedEx、TNT、UPS、またはあなたの選択の他の運送業者を通じてグローバルな出荷サービスを提供します。
出荷料参照(DHL/FedEx):
DHL の: 配送費は25ドル〜45ドル(0.5kg)の範囲で、推定配送時間は2〜5営業日です。
フェデックス: 配送費は25ドル〜40ドル(0.5kg)の範囲で、推定配送時間は3〜7営業日。
UPS の: 配送費は25ドル〜45ドル(0.5kg)の範囲で、推定配送時間は3〜7営業日。
TNT社: 配送費は25ドル〜65ドル(0.5kg)の範囲で、推定配送時間は3〜7営業日。
EMS: 配送料金は30〜50ドル(0.5kg)の範囲で、推定配送時間は7〜15営業日です。
登録航空郵便: 配送費は2〜4ドル(0.1kg)で、推定配送時間は5〜20営業日です。
支払い
Payment Methods
支払い期間は100%前払いです。
現在、下記の支払い方法のみを受け入れています。:
1. ペイパル
2. クレジット・デビットカード
3. ワイヤー 転送
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