Diodes PAM2805 Uživatelský manuál stáhnout pdf

PAM2805

Document number: DSxxxxx Rev. 1 - 0

1 of 9

www.diodes.com

July 2013

PAM2805

Product Line o

Diodes Incorporated

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

Description

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 R

for

better efficiency. With its internal 2A, 100m device can provide high

efficiency even at heavy load.

The PAM2805 is available in TSOT26 package.

Features

 3 Modes Cycling Function:

Bright Dimming Blinking

Power Off

<5S

Power Off

<5S

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

Pin Assignments

Applications

 White LED Torch (Flashlight)

Typical Applications Circuit

ILED + 95mV/R

Top View

TSOT26

1 2 3 4 5 6 7 8 9

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Strany 1

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Strany 3 - ---LED forward voltage

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Strany 6 - Application Information

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Strany 7 - Top View

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