High Power LED Driver
Features
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PAM2842
Description
The PAM2842 is a high power LED driver,
capable of driving up to 10 high power LEDs in
series. The PAM2842 supports buck, boost and
sepic topology.
The PAM2842 features over current protection ,
over voltage protection , under voltage lockout
and over temperature protection, which prevent
the device from damage.
LED dimming can be done by using a PWM signal
to the COMP pin.
The PAM2842 is available in 40-Pin QFN6x6 and
TSSOP-20 packages.
Output Power up to 30W
Chip Enable with Soft-start
Analog and PWM Dimming
Peak Efficiency up to 97%
Low Quiescent Current
Switching Frequency Adjustable
Support Buck/Boost/Sepic Topology
Over Current Protection
Over Voltage Protection
Thermal Protection
UVLO
Tiny Pb-Free Packages :
40-Pin QFN6x6 and TSSOP-20
Applications
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Home Lighting
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Automotive Lighting
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Monitor Backlighting
Typical Application Circuit
Boost with Low Side Current Sense
Vin
1μF
L1
Boost with High Side Current Sense
Vin
L1
33 μ H
1μF
0.14Ω
33 μ H
PGND
PGND
HVIN
EN
SW
SW
OV
VDD-5V
1μF
1k Ω
10nF
10 μ F
0.14Ω
1μF
130kΩ
430kΩ
PGND
PGND
HVIN
15kΩ
SW
SW
OV
VDD-5V
1μF
430kΩ
PAM2842
COMP
Sense+
Sense-
EN
15kΩ
10nF
PAM2842
COMP
Sense+
Sense-
1k Ω
VDD-DR
10 μ F
1μF
130kΩ
VDD-DR
RT
AGND
RT
AGND
Power Analog Microelectronics
,
Inc
www.poweranalog.com
09/2008 Rev 1.1
1
PAM [ POWER ANALOG MICOELECTRONICS ]
