onsemi CAT4139TD-GT3

CAT4139 Series 20 mA 5.5 V 1.3 MHz High Current Boost White LED Driver TSOT-23-5

Tape & Reel (TR) CAT4139 Step-Up (Boost) Analog PWM led driver 2.9mm 750mA Switch 5.5V 1MHz

22V 1MHz 1 boost converter DC-DCVoltage Stabilizer 750mA 2.2V~5.5V TSOT-23-5 LED Drivers ROHS

CAT4139TD-GT3 LED DRIVER IC, 2.2 - 5.5 V DC 300MA 5-PIN SOT-23

ON SEMICONDUCTOR - CAT4139TD-GT3 - White LED Driver, Boost (Step Up), 2.8-5.5V input, 1 MHz switch-freq., 22V/180 mA out, TSOT-23-5

Driver, Led, 0.75A, 1Mhz, 22V, 5Tsot23; Device Topology:Boost (Step Up); Input Voltage Min:2.8V; Input Voltage Max:5.5V; Output Voltage Max:24V; Output Current Max:180Ma; Switching Frequency:1Mhz; No. Of Outputs:1Outputs; Ic Rohs Compliant: Yes |Onsemi CAT4139TD-GT3.

The CAT4139 is a DC/DC step-up converter that delivers an accurate constant current ideal for driving LEDs. Operation at a fixed switching frequency of 1MHz allows the device to be used with small value external ceramic capacitors and inductor. LEDs connected in series are driven with a regulated current set by the external resistor R1. The CAT4139 is ideal for driving parallel strings of up to five white LEDs in series or up to 22V. LED dimming can be done by using a DC voltage a logic signal or a pulse width modulation (PWM) signal. The shutdown input pin allows the device to be placed in power-down mode with zero quiescent current. In addition to thermal protection and overload current limiting the device also enters a very low power operating mode during Open LED fault conditions. The device is housed in a low profile (1mm max height) 5-lead TSOT-23 package for space critical applications.