logo
サインイン
/在籍

SGM3140B

新規設計に推奨しません

500mA Buck/Boost Charge Pump LED Driver

SGM3140B新規にお勧めません。同等品があります。
SGM37863
アクティブ

Synchronous Boost LED Flash Driver with 1.5A High-Side Current Source

Preview Image
Preview Image

The SGM3140B is a current-regulated buck/boost charge pump LED driver capable of driving 500mA output current. It is ideal for powering high brightness LEDs for camera flash applications. The SGM3140B has 1×/2× operation mode to control the output current for flash and torch modes. Both flash and torch modes can be used continuously until thermal shutdown occurs.

The supply voltage operates from 2.7V to 5.5V and is well suited for various applications powered by a 1-cell Li-Ion battery, as well as 3-cell or 4-cell NiCd, NiMH or Alkaline batteries. The SGM3140B automatically converts between boost and buck modes. Therefore, it ensures that LED current cannot be restricted by the forward voltage. High switching frequency makes it easy to use tiny components. Small 0603 current sense resistors can be used due to the low FB reference voltage.

The SGM3140B provides very low shutdown current and soft-start function. Built-in soft-start circuitry avoids excessive inrush current during startup. The SGM3140B also includes a comprehensive set of protection features such as over-voltage protection, over-current protection and thermal shutdown.

The SGM3140B is available in a Green TDFN-3×3-10L package and is specified over an ambient temperature range of -40 to +85.

More
特性
  • Input Voltage Range: 2.7V to 5.5V

  • Up to 500mA Output Current

  • Up to 90% Efficiency in Torch Mode

  • Programmable Flash Current

  • Automatic Buck/Boost Mode Conversion

  • No External Inductors

  • High Switching Frequency: 2.2MHz

  • Low Reference for Low Loss Sensing: 47mV

  • Less than 1μA Shutdown Current

  • Automatic Soft-Start for Reducing Inrush Current

  • Low Input and Output Ripple and Low EMI

  • Protection Features

    Output Over-Voltage Protection

    Over-Current Protection

    Thermal Shutdown

  • Available in a Green TDFN-3×3-10L Package

アプリケーション

White LED Torch or Flash for Mobile Phones, Camcorders and DSCs

Generic Lighting, Strobe and Flash Applications

White LED Backlighting

General Purpose High Current Boost

注文書
Part Number
StatusPackagePinsPd-Free
RoHS
REACH
Green
MSL RatingOperating Temperature RangeMaterial ContentReliability Report
Unit Resale Price*
(Volume Range: in USD)
Lead Time**
(Volume Range: Days)
SGM3140BYD10G/TR
新規設計に推奨しません
TDFN-3×3-10L
10
Yes
YesYesYesMSL1
-40℃ to +85℃
閲覧
閲覧
1-24 units : $0.7/unit
25-99 units : $0.6/unit
100-249 units : $0.5/unit
250-499 units : $0.4/unit
500-999 units : $0.35/unit
1000-9999 units : $0.26/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 91 days

* 再販価格は参考価格です。正式な見積もりについては、代理店にお問い合わせください。

** 提供されるリードタイムは参考情報であり、異なる状況に応じて変更される可能性があります。

Logo
SGマイクロ社(SGMICRO)は、高性能、高信頼性のアナログ信号処理およびシステム電源管理集積回路の開発、製造、販売に注力しています。 産業オートメーション、新エネルギー、自動車、通信、コンピュータ、民生用電子機器、医療機器アプリケーション向けに、さまざまなアナログ信号調節と革新的な電源ソリューションを提供しています。
プライバシーステートメント プライバシーポリシー Copyright © 2024 SG MICRO CORP 無断複写・転載を禁じます。