Texas Instruments LM2794TL/NOPB

current Regulated switched capacitor LED supply with Analog and PWM brightness control 14-DSBGA -30 to 85

5.5V PWM,Analog Switched Capacitor (Charge Pump) 20mA 4 2.7V 3.8V DSBGA-14 , 2.4mm*2.1mm*360¦Ìm

LED DRIVER WHITE QUAD OUTPUT CC; Driver IC type:LED; Temperature, operating range:-30°C to +85°C; Base number:2794; Case style:DSBGA; Pins, No. of:14; Temp, op. max:85°C; Temp, op. min:-30°C; Termination Type:SMD

IC, LED DRVR, µSMD-14; Topology:Charge P; IC, LED DRVR, µSMD-14; Topology:Charge Pump; No. of Outputs:4; Output Current:80mA; Input Voltage:2.7V to 5.5V; Dimming Control Type:PWM / Analog; Operating Temperature Range:-30°C to +85°C; Driver Case Style:Micro SMD

The LM2794/95 is a fractional CMOS charge-pump that provides four regulated current sources. It accepts an input voltage range from 2.7V to 5.5V and maintains a constant current determined by an external sense resistor. The LM2794/5 delivers up to 80mA of load current to accommodate four White LEDs. The switching frequency is 325kHz. (min.) to keep the conducted noise spectrum away from sensitive frequencies within portable RF devices. Brightness can be controlled by both linear and PWM techniques. A voltage between 0V and 3.0V may be applied to the BRGT pin to linearly vary the LED current. Alternatively, a PWM signal can be applied to the SD pin to vary the perceived brightness of the LED. The SD pin reduces the operating current to 2.3uA (typ.) The LM2794 is shut down when the SD pin is low, and the LM2795 is shut down when the SD pin is high. The LM2794/95 is available in a micro SMD-14 CSP package.