onsemi CAT3616
The CAT3616 is a high efficiency 1x/1.5x fractional charge pump with programmable dimming current in six LED channels. The 1x/1.5x fractional charge pump supports a wide range of input voltages from 3 V to 5.5 V with efficiency up to 91%, and is ideal for Li−Ion battery powered devices.| Part No. | CAT3616 |
|---|---|
| Datasheet | CAT3616 Download |
| Manufacturer |  onsemi |
| Description | 6-Channel Charge Pump LED Driver |
| Buy | Stock & Price |
DESCRIPTION
To ensure uniform brightness in LCD backlight applications, each LED channel delivers an accurate regulated current. Low noise and input ripple is achieved by operating at a constant switching frequency of 1 MHz which allows the use of small external ceramic capacitors. Two groups of LEDs, main (MAIN1 to MAIN4) and sub (SUB1 and SUB2) are programmable through the ENM (active low) and ENS inputs. Independent current from 1 mA to 31 mA with a 1 mA step are set by toggling the ENM and ENS inputs. The enable EN input pin allows to shutdown the device with zero quiescent current. The device is available in a 16−pad TQFN package with a max height of 0.8 mm.FEATURES
● 6 LED Channels with Tight Matching● Independent Main and Sub Channels
● 1−wire EZDimt Programmable LED Current
● Accurate 1 mA Dimming Level
● Power Efficiency up to 91%
● Fractional Pump 1x/1.5x
● Low Noise Input Ripple
● Fixed High Frequency Operation 1 MHz
● “Zero” Current Shutdown Mode
● Soft Start and Current...
