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PAM2805 Datasheet

3-MODES / 3W WLED DRIVER

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A Product Line of
Diodes Incorporated
PAM2805
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 RS for
better efficiency. With its internal 2A, 100mdevice can provide high
efficiency even at heavy load.
The PAM2805 is available in TSOT26 package.
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
Pin Assignments
Top View
TSOT26
Applications
White LED Torch (Flashlight)
Typical Applications Circuit
PAM2805
Document number: DSxxxxx Rev. 1 - 0
ILED + 95mV/RS
1 of 9
www.diodes.com
July 2013
© Diodes Incorporated


Diodes Semiconductor Electronic Components Datasheet

PAM2805 Datasheet

3-MODES / 3W WLED DRIVER

No Preview Available !

Pin Description
Pin
Number
1
2
3
4
5
6
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 (@TA = +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
Supply Voltage
Output Voltage
Storage Temperature Range
Lead Temperature (Soldering, 5 sec)
Rating
6
6
-65 to +150
300
Unit
V
°C
Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.)
Parameter
Operation Temperature Range
Junction Temperature Range
Rating
-40 to +85
-40 to +125
Unit
°C
PAM2805
Document number: DSxxxxx Rev. 1 - 0
2 of 9
www.diodes.com
July 2013
© Diodes Incorporated


Part Number PAM2805
Description 3-MODES / 3W WLED DRIVER
Maker Diodes
Total Page 9 Pages
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