PAM2842 Datasheet, PDF (1/17 Pages) Power Analog Micoelectronics – High Power LED Driver

Features
n Output Power up to 30W
n Chip Enable with Soft-start
n Analog and PWM Dimming
n Peak Efficiency up to 97%
n Low Quiescent Current
n Switching Frequency Adjustable
n Support Buck/Boost/Sepic Topology
n Over Current Protection
n Over Voltage Protection
n Thermal Protection
n UVLO
n Tiny Pb-Free Packages :
40-Pin QFN6x6 and TSSOP-20
Applications
n Home Lighting
n Automotive Lighting
n Monitor Backlighting
PAM2842
High Power LED Driver
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.
Typical Application Circuit
Boost with Low Side Current Sense
Vin
L1
33μH
1μF
10μF
PGND
SW
PGND
SW
HVIN
OV
EN
VDD-5V
PAM2842
VDD-DR
COMP
1μF
RT
130kΩ
AGND
Sense+
Sense-
430kΩ
1μF
15kΩ
1kΩ 10nF
Boost with High Side Current Sense
Vin
L1
33μH
1μF
10μF
0.14Ω
PGND
SW
PGND
SW
HVIN
OV
EN
VDD-5V
PAM2842
VDD-DR
COMP
1μF
RT
130kΩ
AGND
Sense+
Sense-
430kΩ
1μF
15kΩ
1kΩ 10nF
0.14Ω
Power Analog Microelectronics,Inc
www.poweranalog.com
1
09/2008 Rev 1.1