AL3159FSG-7

NOT RECOMMENDED FOR NEW DESIGN CONTACT US AL3159 HIGH EFFICIENCY 1x/2x CHARGE PUMP FOR WHITE LED APPLICATIONS Pin Assignments The DIODES™ AL3159 is a low noise, constant frequency charge pump DC/DC converter that uses a dual mode load switch (1x), and (2x) conversion for white LED applications. The AL3159 is capable of driving nine LED channels at 20mA from a 2.7V to 5.5V input. The current sinks may be operated using three simple logic control inputs individually or in parallel for driving higher-current LEDs. Low external part counts (one 1µF flying capacitor and two 2.2µF capacitors at VIN and VOUT) make this part ideally suited for small, battery-powered applications. The AL3159 is available in a lead-free, space-saving, thermally enhanced 20-pin 3 x 3mm QFN3030-20 package. D6 GND D5 D7 20 19 18 17 16 D8 1 15 D4 D9 2 14 CTL1 AL3159 Exposed Pad 3 D3 13 D2 CTL3 4 12 D1 CTL2 11 VOUT 7 8 9 10 NC PGND 6 CP 5 VIN AL3159 digital inputs are used to enable or disable the LED channels with a fixed default current settings at 20mA or other factory programming options available. Each output of the AL3159 is equipped with built-in protection for VOUT short circuit and auto-disable for LED short conditions. Built-in soft-start circuitry prevents excessive inrush current during start-up and mode switching. A low-current shutdown feature disconnects the load from VIN to reduce quiescent current less than 1µA. NC (Top View) CN Description QFN3030-20 Applications    Mobile phone white LED backlighting and indicators PDA white LED backlighting Battery-operated phone main and sub screen white LED backlighting Features                VIN Range: 2.7V to 5.5V Up to 93% Max Power Efficiency 1% Current Matching Accuracy Between Channels Drives up to 9 Configurable Channels of LEDs Three Simple Logic Decoding LED On/Off Control Inputs Low Transition Threshold Voltage Typical 150mV Dual-Mode 1x and 2x Charge Pump 1.2MHz Constant Switching Frequency VOUT Short Circuit and Thermal Protections Soft Start for Reducing Inrush Current IQ < 1µA in Shutdown Thermally-Enhanced QFN3030-20 Package: Available in “Green” Molding Compound (No Br, Sb) Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/ Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain