ON Semiconductor CAT3649AGEVB User Manual
CAT3649AGEVB
CAT3649 Evaluation Board
User's Manual
Introduction
This document describes the CAT3649 evaluation board
for the ON Semiconductor CAT3649 6−Channel
Quad−Mode LED Driver with an Ambient Light Sensor
circuit, NOA1211, that can control the LEDs intensity
proportionally with the ambient light intensity.
The functionality and major parameters of the CAT3649
can be evaluated with the CAT3649 evaluation board.
A detailed description and electrical characteristics are
available in the CAT3649 and NOA1211 datasheets.
http://onsemi.com
EVAL BOARD USER’S MANUAL
Board Hardware
The evaluation board contains one CAT3649 in an
application circuit driving a total of six LEDs and one
NOA1211. The Ambient Light Sensor is connected to the
LED driver via the C8051F321 microcontroller, which is
illustrated in Figure 2.
Figure 2. Ambient Light Sensor Mode Block Diagram
© Semiconductor Components Industries, LLC, 2012
November, 2012 − Rev. 1
Figure 1. CAT3649 Evaluation Board
1 Publication Order Number:
EVBUM2164/D
CAT3649AGEVB
Figure 3. CAT3649AGEVB Board Schematic
Table 1. BILL OF MATERIALS*
Desig-
nator
U1 1 6 Channel LED Driver - - TQFN16 ON
U2 1 Ambient Light Sensor - - 3 x 3 mm ON
U3 1 8 bit Microcontroller - - CUDFN Silicon
U4 1 Low Dropout Regulator (5 V to 3.3 V) - 1.6 x 1.6 ON
U5 1 5 V Voltage Regulator - - MLP-28 ON
D1 to D6 6 White LED - - SOT-223 Lite-On LTW-150TK Yes
D7 1 Red LED - - DPAK-3 Everlight EL17-215SURC Ye s
C1 to C4,
C6, C8,
C11, C13
C7, C9,
C10, C16,
C14
C5 1 Ceramic Capacitor 47 nF 10% 0805 AVX 08053C473KAT2A Ye s
C15 1 Tantalum Capacitor
Qty Description Value
8 Ceramic Capacitor
5 Ceramic Capacitor 100 nF 10% 0805 AVX 0805ZC104KAT2A Ye s
1 mF / 10 V,
X7R
10 mF/10V
Toler-
ance
10% 1206 Kemet C0805C105K9RACTU Ye s
10% 0805 Vishay TM8R106K010UBA Yes
Footprint Manufacturer
Semiconductor
Semiconductor
Laboratories
Semiconductor
Semiconductor
Manufacturer Part
Number
CAT3649HV3-GT2 No
NOA1211 No
C8051F321 Yes
CAT6218-330TDG No
MC78M05ABDT No
*All products listed are Pb−free.
Substi-
tution
Allowed
http://onsemi.com
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