PA5110 Datasheet, PDF (1/7 Pages) Protek Devices – Constant Current LED Driver.

ANALOG PRODUCTS DIVISION
Features
 Fast 1.2MHz Switching Frequency
 High Efficiency：85% Typical
 The minimum input voltage 2.5 V
 Drives 7 Series 2 Parallel LED’s with 5V VIN
 Drives 3 Series 5 Parallel LED’s with 5V VIN
 Requires Only 0.47uF Output Capacitor
 Inherently Matched LED Current
 Over-voltage protection and UVLO function
 Uses Very Small Inductors
 SOT23-6 Package
Applications
 LED series and parallel applications
 LED Display Panels Backlighting.
Block Diagram
PWM
CONTROL
F_OSC
Pin6 V_CC
VREF
SHUTDOWN
Pin 4 CE
Current Sense
+
Slope Comp
+
-
+
gm
-
-
+
Pin1 SW
Pin5 OVP
Pin2 GND
Pin3 FB
PA5110
Constant Current LED Driver.
The PA5110 is a white LED constant current driver used
for backlighting of digital photo frames or 3 to 5-inch
LED screens.
It is a step-up DC/DC converter specifically designed to
drive white LED’s at a constant current. It can drive up to
fifteen LED’s.
It switches at 1.2MHz and uses minimal external
components which provide cost and real estate saving
over alternate solutions.
The output capacitor can be as low as 0.47uF,
Feedback voltage is 95mV.
Pin Configurations
SW 1
GND ²
FB 3
6 ^VCC
5 OVP
4 ^CE
SOT23-6L
Symbo
l
SW
Description
Switching Output
GND Ground
FB
Feedback
Symbo
l
VCC
OVP
CE
Description
Power Supply In
Over Voltage
Protection
Start-Up
Ordering Information
Temperature Range Package
-40 to 85°C
SOT23-6L
Part Number
PA5110-6L
Description
561 E Elliott Rd, Suite 175, Chandler, Arizona Tel. [phone] Fax. [phone]
95225 Rev0 04/09
www.protekanalog.com
NOT FOR USE IN LIFE SUPPORT SYSTEMS