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PA5110

Description
Constant Current LED Driver.
File Size174KB,7 Pages
ManufacturerProTek Devices
Websitehttp://www.protekdevices.com/
Download Datasheet View All

PA5110 Overview

Constant Current LED Driver.

PA5110
95225
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
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
Applications
LED series and parallel applications
LED Display Panels Backlighting.
GND 2
FB
3
SOT23-6L
5
4
OVP
CE
SW
1
6
V
CC
Block Diagram
Pin1 SW
PWM
CONTROL
Current Sense
Pin5 OVP
Symbo
l
SW
GND
FB
Description
Switching Output
Ground
Feedback
Symbo
l
VCC
OVP
CE
Description
Power Supply In
Over Voltage
Protection
Start-Up
F
OSC
Pin6 V
CC
+
+
Slope Comp
VREF
-
+
gm
-
Pin3 FB
-
Pin2 GND
Ordering Information
Temperature Range
-40 to 85°C
+
Package
SOT23-6L
Part Number
PA5110-6L
SHUTDOWN
Pin 4 CE
Description
561 E Elliott Rd, Suite 175, Chandler, Arizona Tel. (480) 539-2900 Fax. (480) 632-1715
www.protekanalog.com
95225 Rev0 04/09
NOT FOR USE IN LIFE SUPPORT SYSTEMS
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