PAM2805 datasheet(4/9 Pages) PAM

4 / 9 page

Typical Performance Characteristics

T =25

, L=2.2uH , C =10uF, C

=10uF,

unless otherwise noted.

ΙΝ

ΟUT

℃

=1uF,

BLK

1. LED Power Efficiency vs Input Voltage

2. LED Current vs Input Voltage

3. DC Input Current vs Input Voltage

4. Feedback Voltage vs Input Voltage

Power Analog Microelectronics Inc

www.poweranalog.com

11/2011 Rev1.0

PAM2805

3-Modes/3W WLED Driver with 1 or 2 Cell Battery

100

0.7

1.0

1.3

1.6

1.9

2.2

2.5

2.8

3.1

Input Volt age(V)

ILED=350mA

ILED=750mA

100

200

300

400

500

600

700

800

0. 7

1.0

1.3

1.6

1. 9

2.2

2.5

2.8

3.1

Input Volt age(V)

ILED=750mA( 100% brightnes s )

ILED=350mA( 100% brightnes s )

ILED=750mA(25% brightness )

ILED=350 mA(25% brightnes s )

500

1 000

1 500

2 000

2 500

0 .7

1. 0

1.3

1.6

1.9

2.2

2. 5

2.8

3.1

3.4

Input Volt age(V)

ILED=750mA( 100% brightness)

ILED=350mA(100% brightnes s)

100

0.7

1.0

1.3

1.6

1.9

2.2

2. 5

2.8

3.1

3. 4

Input Voltage(V)

ILED=350mA( 100% brightness)

ILED=750mA(100% br ightnes s)

ILED=350mA (25% brightnes s)

ILED=750 mA( 25% br ightness )

PAM2805 数据表(PDF) 4 Page - Power Analog Micoelectronics

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