PAM2805AF

PAM2805AF Datasheet

PAM2805

Part	Datasheet
PAM2805AF	PAM2805AF (pdf)

PDF Datasheet Preview
A Product Line of Diodes Incorporated PAM2805 3-MODES/ 3W WLED DRIVER WITH 1 OR 2 CELL BATTERY The PAM2805 is a step-up DC-DC WLED driver with 3 modes cycling function 100% brightness,25% brightness and 8.5Hz blinking . 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 RS for better efficiency. With its internal 2A, device can provide high efficiency even at heavy load. The PAM2805 is available in TSOT26 package. • 3 Modes Cycling Function: Power Off Power Off Bright Dimming Blinking Power Off • 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 • Over Temperature Protection • Over Voltage Protection • TSOT26 Package • Pb-Free Package Pin Assignments Top View TSOT26 • White LED Torch Flashlight Typical Applications Circuit PAM2805 ILED + 95mV/RS 1 of 9 July 2013 Diodes Incorporated Pin Description Pin Number 1 2 3 4 Pin Name VIN GND BLK FB VOUT SW Function Input Voltage Power Ground Connect A 1µF CAP for blinking Feedback Output Voltage Connected to an internal NMOS switch Block Diagram A Product Line of Diodes Incorporated PAM2805 Absolute Maximum Ratings = +25°C, unless otherwise specified. 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 Output Voltage Storage Temperature Range Ordering Information Part Number PAM2805AF Marking ECXYW Marking Information Top View TSOT26 Package Type TSOT26 Standard Package 3000 Units/Tape&Reel PAM2805 7 of 9 July 2013 Diodes Incorporated Package Outline Dimensions All dimensions in mm. TSOT26 A Product Line of Diodes Incorporated PAM2805 PAM2805 8 of 9 July 2013 Diodes Incorporated A Product Line of Diodes Incorporated PAM2805 IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION . Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages. Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the final and determinative format released by Diodes Incorporated. LIFE SUPPORT Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: are intended to implant into the body, or support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright 2013, Diodes Incorporated PAM2805 9 of 9 July 2013 Diodes Incorporated

PDF Datasheet Preview

A Product Line of Diodes Incorporated

PAM2805
3-MODES/ 3W WLED DRIVER WITH 1 OR 2 CELL BATTERY

The PAM2805 is a step-up DC-DC WLED driver with 3 modes cycling function 100% brightness,25% brightness and 8.5Hz blinking .

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 RS for better efficiency. With its internal 2A, device can provide high efficiency even at heavy load.

The PAM2805 is available in TSOT26 package.
• 3 Modes Cycling Function:

Power Off

Power Off

Bright Dimming Blinking

Power Off
• 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
• Over Temperature Protection
• Over Voltage Protection
• TSOT26 Package
• Pb-Free Package

Pin Assignments

Top View TSOT26
• White LED Torch Flashlight

Typical Applications Circuit

PAM2805

ILED + 95mV/RS
1 of 9

July 2013

Diodes Incorporated

Pin Description

Pin Number
1 2 3 4

Pin Name

VIN GND BLK FB VOUT SW

Function

Input Voltage Power Ground Connect A 1µF CAP for blinking Feedback Output Voltage Connected to an internal NMOS switch

Block Diagram

A Product Line of Diodes Incorporated

PAM2805

Absolute Maximum Ratings = +25°C, unless otherwise specified.

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 Output Voltage

Storage Temperature Range
Ordering Information

Part Number PAM2805AF

Marking ECXYW

Marking Information

Top View TSOT26

Package Type TSOT26

Standard Package 3000 Units/Tape&Reel

PAM2805
7 of 9

July 2013

Diodes Incorporated

Package Outline Dimensions All dimensions in mm.

TSOT26

A Product Line of Diodes Incorporated

PAM2805

PAM2805
8 of 9

July 2013

Diodes Incorporated

A Product Line of Diodes Incorporated

PAM2805

IMPORTANT NOTICE

DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION .

Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages.

Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.

Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks.

This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the final and determinative format released by Diodes Incorporated.

LIFE SUPPORT

Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:

A. Life support devices or systems are devices or systems which:
are intended to implant into the body, or
support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user.

B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness.

Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.

Copyright 2013, Diodes Incorporated

PAM2805
9 of 9

July 2013

Diodes Incorporated

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived PAM2805AF Datasheet file may be downloaded here without warranties.

Datasheet ID: PAM2805AF 510027