DC-DC LED Drivers | CAT3661

LED 驱动器，低功耗，1 沟道

Obsolete

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概览

CAT3661 是一款高能效低功率分数型电荷泵，可驱动电流最高为 5 mA 的一个 LED。优化的软启动限流和短路保护适用于纽扣电池。低噪声输入波纹和恒定开关频率允许使用小型外部陶瓷电容器。这使得 CAT3661 适用于 EMI 敏感型应用。该电荷泵支持 2.0 V 至 5.5 V 的宽输入电压范围。CAT3661 具有内置电路可向微控制器提供开路/短路 LED 和低电池电量事件反馈。低电池电量指示器跳闸点内部固定在 2.4 V。如有必要，可以增加外部电阻来升高或降低跳闸电压。该器件采用极小型 16 引线 TQFN 3 mm x 3 mm 封装，最大高度 0.8 mm。包含的 1.33x 分数型电荷泵模式与传统的 1.5x 三模式电荷泵相比，可将器件能效提高达 10%，且无增加的外部电容器。

  • Low Power LCD Display Backlight
  • Low Power Handheld Device Backlight

  • Quad Mode Charge Pump: 1x, 1.33x, 1.5x, 2x
  • Drives One LED up to 5 mA
  • Optimized for Coin Cell Battery Operation
  • Open/Short LED Fault Detection
  • Adjustable Low Battery Detection
  • Low Quiescent Current 150 A Typical
  • Power Efficiency up to 92%
  • Low Noise Input Ripple in All Modes
  • Zero Current Shutdown Mode
  • Soft Start and Short Circuit Current Limiting
  • Thermal Shutdown Protection

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Reference Price

CAT3661HV3-GT2

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Obsolete

CAD Model

Pb

A

H

P

TQFN-16

510AD

1

260

REEL

2000

N

Charge Pump

2

5.5

6

6

100

Price N/A

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可靠性数据

Die Related Summary Data

Device: CAT3661HV3-GT2

Equivalent to wafer fab process: CMOS SUB

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等效器件小时

平均故障间隔时间/平均无故障时间（按小时计算）

FITS

CMOS SUB

2

920154574

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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