Linear LED Drivers | CAT3647

LED ドライバ、3 チャネル

Obsolete

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製品

Overview

CAT3647 は、1 ワイヤ・デジタル・インタフェースでプログラム可能な LED を最大 3 個駆動できる高効率分数ポンプです。1.33x 分数チャージ・ポンプ・モードによるデバイスの効率は、従来の 1.5x チャージ・ポンプに外付けキャパシタを追加しない場合より最大 10% 向上しています。 固定スイッチング周波数で動作させることにより、値の小さい外付けセラミック・キャパシタを使用でき、低ノイズ入力リップルを低く抑えることができます。マルチ分数チャージ・ポンプでは、2.4 V ～ 5.5 V の広範な入力電圧をサポートします。 EN/DIM ロジック入力は、チップ・イネーブルとして、さらにはすべての LED チャネルの電流設定のためのデジタル調光インタフェースとして機能します。1 ワイヤ・パルス調光インタフェースは、フルスケールからゼロ電流までの 32 の線形ステップをサポートします。

  • LCD Display Backlight

  • Mobile Phones
  • Digital Still Cameras

  • High efficiency 1.33x charge pump
  • Quad-mode charge pump: 1x, 1.33x, 1.5x, 2x
  • Drives up to 3 LEDs at 30 mA each
  • 1-wire EZDim™ 32 linear steps
  • Power efficiency up to 92%
  • Low noise input ripple in all modes
  • 'Zero' current shutdown mode
  • Soft start and current limiting
  • Short circuit protection
  • Thermal shutdown protection

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Package Type

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MSL Type

MSL Temp (°C)

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ON Target

VI Max (V)

IO Max (mA)

LEDs in Series, Max #

LEDs in Parallel, Max #

Reference Price

CAT3647HV3-GT2

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Obsolete

CAD Model

Pb

A

H

P

TQFN-16

510AD

1

260

REEL

2000

N

5.5

100

1

3

Price N/A

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