CAT3661: LED Driver, Low Power, 1-Channel
内容: The CAT3661 is a high efficiency low power fractio...
The CAT3661 is a high efficiency low power fractional charge pump that drives one LED with up to 5 mA of current. Soft-start current limiting and short-circuit protection are optimized for use with coin cell batteries.
Low noise input ripple and constant switching frequency allows the use of small external ceramic capacitors. This makes the CAT3661 ideal for EMI sensitive applications. The charge pump supports a wide range of input voltages from 2.0 V to 5.5 V.
The CAT3661 has a built-in circuitry to provide feedback to a microcontroller of Open/Short LED and Low battery events. The Low battery indicator trip point is internally fixed at 2.4 V. External resistors can be added to raise or lower the trip voltage, if needed.
The device is packaged in the tiny 16-lead TQFN 3 mm x 3 mm package with a max height of 0.8 mm.
The inclusion of a 1.33x fractional charge pump mode increases device efficiency by up to 10% over traditional 1.5x tri-mode charge pumps with no added external capacitors.
Quad Mode Charge Pump: 1x, 1.33x, 1.5x, 2x - Higher efficiency charge pump than competition, very compact solution, no inductor.
Low Quiescent Current 150 A Typical - High efficiency LED driver even at low LED current below 5mA.
Drives One LED up to 5 mA
Optimized for Coin Cell Battery Operation
Open/Short LED Fault Detection
Adjustable Low Battery Detection
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
Low Power LCD Display Backlight
Low Power Handheld Device Backlight
供給状況 & サンプル
Compliance: Pb-free Halide free
内容: LED Driver, Low Power, 1-Channel
外形 タイプ: TQFN-16
外形 Case Outline: 510AD
梱包形態 タイプ: REEL
梱包形態 数量: 2000
Market Leadtime (weeks):2 to 4
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