Linear LED Drivers | CAT3606

LED ドライバ、チャージ・ポンプ、6 チャネル

Obsolete

Datasheet

製品

Overview

CAT3606 は、携帯電話のメインディスプレイ用 LED を 4 つまで、サブディスプレイ用 LED を 2 つまで制御します。このデバイスは、1x (LDO) モードか 1.5x チャージ・ポンプ・モードで動作できます。すべての LED ピン電流は、LCD バックライトの輝度均一性を実現するために調整され、厳密に整合されます。外付け抵抗 (RSET) は公称出力電流を設定します。このデバイスは、低電圧動作 (3 V) 時にチャネル当たり 20 mA、公称動作 (3.3 V) 時にチャネル当たり 30 mA という大きさの電流を提供できます。一定の高周波スイッチング・スキーム (1MHz) により、低ノイズを実現し、非常に小さい値のセラミック・キャパシタを使用することができます。「ゼロ」静止電流モードはチップ・イネーブル・ピン EN を介して実施できます。メインとサブの LED には、それぞれ専用の ON/OFF 制御ピン (ENM、ENS) があります。RSET ピン電流を制御する DC 電圧を使用するか、または ENM および ENS ピンの PWM 信号を印加することで調光できます。

  • Color LCD and keypad Backlighting

  • Portable MP3 Players
  • Digital Cameras
  • Mobile Phones

  • Drives up to 4 main LEDs and 2 sub LEDs
  • Separate control for main and sub LEDs
  • Compatible with supply voltage of 3 V to 5.5 V
  • Power efficiency up to 90%
  • Output current up to 30mA per LED
  • High-frequency Operation at 1 MHz
  • 2 modes of operation 1x and 1.5x
  • White LED detect circuitry on all channels
  • Shutdown current less than 1 µA
  • Small ceramic capacitors
  • Soft start and current limiting
  • Short circuit protection

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Case Outline

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MSL Temp (°C)

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VI Max (V)

IO Max (mA)

LEDs in Series, Max #

LEDs in Parallel, Max #

Reference Price

CAT3606HV4-T2

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Obsolete

CAD Model

Pb

A

H

P

TQFN-16

510AE

1

260

REEL

2000

N

5.5

180

6

Price N/A

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