SGM3141B

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700mA Buck/Boost Charge Pump LED Driver

SGM3141B.pdf

SGM3141B は新規にはお勧めしません。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

The SGM3141B is a current-regulated buck/boost charge pump LED driver capable of driving 700mA output current. It is ideal for powering high brightness LEDs for camera flash applications. The SGM3141B 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 SGM3141B 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 SGM3141B provides very low shutdown current and soft-start function. Built-in soft-start circuitry avoids excessive inrush current during startup. The SGM3141B also includes a comprehensive set of protection features such as over-voltage protection, over-current protection and thermal shutdown.

The SGM3141B is available in a Green TDFN-3×3-10L package and is specified over an ambient temperature range of -40℃ to +85℃.

特性

Input Voltage Range: 2.7V to 5.5V
Up to 700mA Output Current
Up to 90% Efficiency in Torch Mode
Programmable Flash Current
Automatic 1× and 2×Modes for High Efficiency
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	Status	Package	Pins	Pd-Free	RoHS	REACH	Green	MSL Rating	Operating Temperature Range	Material Content	Reliability Report	Unit Resale Price* (Volume Range: in USD)	Lead Time** (Volume Range: Days)
SGM3141BYD10G/TR	Not Recommened for New Design	TDFN-3×3-10L	10	Yes	Yes	Yes	Yes	MSL1	-40℃ to +85℃	閲覧	閲覧

* 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。