Diodes PAM2803 Bedienungsanleitung PDF herunterladen

PAM2803

Document number: DSxxxxx Rev. 1 - 1

1 of 9

www.diodes.com

July 2013

PAM2803

Product Line o

Diodes Incorporated

3W HIGH POWER WHITE LED DRIVER

Description

The PAM2803 is a set-up DC-DC converter that delivers a regulated

output current. The device switches at a 1.0MHz constant frequency,

allowing for the use of small value external inductor and ceramic

capacitors.

The PAM2803 is targeted to be used for driving loads up to 1A from a

two-cell alkaline battery. The LED current can be programmed by the

external current sense resistor, R

, connected between the feedback

pin (FB) and ground. A low 95mV feedback voltage reduces the

power loss in the Rs for better efficiency. With its internal 2A, 100m

NMOS switch, the device can provide high efficiency even at heavy

load. During the shutdown mode, the feedback resistor R

and the

load are completely disconnected and the current consumption is

reduced to less than 1µA.

The PAM2803 is available in the 6-lead TSOT26 package.

Features

 LED Power Efficiency: up to 90%

 Current Accuracy: 5%(V

= 3.6V to 1.8V @V

= 3.7V)

 Low Start-Up Voltage: 0.9V (I

LED

= 270mA)

 Low Hold Voltage: 0.75 (I

LED

= 200mA)

 1MHz Switching Frequency

 Uses Small, Low Profile External Components

 Low R

DS(ON)

: 100m (typ)

 Over Temperature Protection

 Low Profile TSOT26 Package

 Pb-Free Package

Pin Assignments

Applications

 White LED Torch (Flashlight)

 White LED Camera Flash

 DSC(Digital Still Camera)Flash

 Cellular Camera Phone Flash

 PDA Camera Flash

 Camcorder Torch(Flashlight) Lamp

Typical Applications Circuit

LED

= 750mA, R

= 0.127Ω

Top View

TSOT26

1 2 3 4 5 6 7 8 9

Inhaltsverzeichnis

Seite 1 - Top View

PAM2803 Document number: DSxxxxx Rev. 1 - 1 1 of 9 www.diodes.com July 2013© Diodes Incorporated PAM2803A Product Line ofDiodes Incorporated3W HIGH

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Seite 3 - Electrical Characteristics

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Seite 4 - Diodes Incorporated

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Seite 5

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Seite 6 - Application Information

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Seite 7 - Ordering Information

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Seite 8

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Seite 9

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Diodes PAM2803 Bedienungsanleitung

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