LT3593ES6#TRMPBF

LT3593 is a step-up DC/DC converter designed to drive upto ten white LEDs in series from a Li-Ion cell. Series connection of the LEDs provides identical LED currents and eliminates the need for ballast resistors. The device features a unique high side LED current sense that enables the part to function as a “one wire current source” where the low side of the LED string can be returned to ground anywhere. Additional features include output disconnect in shutdown, open LED protection and 1-pin shutdown/LED current control. The CTRL pin is toggled to adjust the LED current via an internal counter and a 5-bit DAC. It is widely used in application such as cell phones, digital cameras, PDAs, handheld computers, MP3 players, GPS receivers etc.

• Drives upto ten white LEDs from a 3V supply
• One pin shutdown and current programming
• LEDs disconnected in shutdown
• 32:1 linear brightness control range
• VIN range is 2.7V to 5.5V
• ±5% output current accuracy at full scale
• Requires only 1μF output capacitor
• Low shutdown current is 3μA typical, switching frequency is 1MHz typical
• Operating temperature is -40°C to 85°C
• Package style is 6-lead plastic TSOT-23

บันทึก

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party