onsemi CAT3636
The CAT3636 is a high efficiency fractional charge pump that can drive up to six LEDs programmable by a one wire digital interface. The inclusion of a 1.33x fractional charge pump mode increases device efficiency by up to 10% over traditional 1.5x charge pumps with no added external capacitors. The multi−fractional charge pump supports a wide range of input voltages from 2.5 V to 5.5 V.| Part No. | CAT3636 |
|---|---|
| Datasheet | CAT3636 Download |
| Manufacturer |  onsemi |
| Description | LED Driver |
| Buy | Stock & Price |
DESCRIPTION
Low noise input ripple is achieved by operating at a constant switching frequency which allows the use of small external ceramic capacitors. The EN/SET logic input functions as a chip enable and a “1−wire” addressable interface for control and current setting of all LEDs. Three groups of two LEDs can be configured with independent LED currents between 0.25 mA and 32 mA. The device is available in a tiny −16lead TQFN 3 mm x 3 mm package with a max height of 0.8 mm. ON Semiconductor’s 1.33x charge pump switching architecture is patented.FEATURES
● High Efficiency 1.33x Charge Pump● Charge Pump: 1x, 1.33x, 1.5x, 2x
● Drives up to 6 LEDs at 32 mA Each
● 1−Wire EZDim LED Current Programming
● 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
● Tiny 3 mm x 3 mm, 16−lead TQFN Package
● These Devices are Pb−Free, Halogen Free/BFR Free and are Ro...
