PAM2805AF Diodes Incorporated

A Product Line of Diodes Incorporated PAM2805 3-MODES/ 3W WLED DRIVER WITH 1 OR 2 CELL BATTERY Description Pin Assignments The PAM2805 is a step-up DC-DC WLED driver with 3 modes cycling Top View function (100% brightness,25% brightness and 8.5Hz blinking). TSOT26 The unique 3 modes cycling function can eliminate the needs of extra functional MCU or IC. The PAM2805 can deliver up to 750mA output current by setting an external resistor. The PAM2805 switches at a 1.0MHz constant frequency, allowing for the use of small value external inductor and ceramic capacitors. A low 95mV feedback voltage reduces the power loss in the R for S better efficiency. With its internal 2A, 100m device can provide high efficiency even at heavy load. Applications The PAM2805 is available in TSOT26 package. White LED Torch (Flashlight) Features 3 Modes Cycling Function: Power Off Power Off <5S <5S Bright Dimming Blinking Power Off <5S Reset to Bright Mode if Power Off time More Than 5S Adjustable Output Current: Up to 750mA 8.5Hz Blinking Mode Low Start-Up Voltage: 0.9V(typ) Low SW on Resistance: 100m Over Temperature Protection Over Voltage Protection TSOT26 Package Pb-Free Package Typical Applications Circuit ILED + 95mV/R S 1 of 9 July 2013 PAM2805 Diodes Incorporated www.diodes.com Document number: DSxxxxx Rev. 1 - 0 A Product Line of Diodes Incorporated PAM2805 Pin Description Pin Pin Function Number Name VIN Input Voltage 1 GND Power Ground 2 BLK Connect A 1F CAP for blinking 3 4 FB Feedback 5 VOUT Output Voltage 6 SW Connected to an internal NMOS switch Block Diagram Absolute Maximum Ratings ( T = +25C, unless otherwise specified.) A These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. All voltages are with respect to ground. Parameter Rating Unit Supply Voltage 6 V Output Voltage 6 Storage Temperature Range -65 to +150 C Lead Temperature (Soldering, 5 sec) 300 Recommended Operating Conditions ( T = +25C, unless otherwise specified.) A Parameter Rating Unit Operation Temperature Range -40 to +85 C Junction Temperature Range -40 to +125 2 of 9 July 2013 PAM2805 Diodes Incorporated www.diodes.com Document number: DSxxxxx Rev. 1 - 0