Diodes PAM2805 - Manual

PAM2805
Document number: DSxxxxx Rev. 1 - 0
1 of 9
www.diodes.com
July 2013
© Diodes Incorporated
PAM2805
A Product Line of
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
S
for
better efficiency. With its internal 2A, 100m Ω 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 Ω

Over Temperature Protection
 Over Voltage Protection
 TSOT26 Package
 Pb-Free
Package
Pin Assignments
Applications
 White LED Torch (Flashlight)
Typical Applications Circuit
ILED + 95mV/R
S
Top View
TSOT26