CAT4240AEVB
CAT4240 LED Driver
Evaluation Board
User's Manual
http://onsemi.com
Introduction
This document describes the CAT4240AEVB evaluation board for
the CAT4240 high efficiency step-up LED driver. The CAT4240
delivers an accurate constant current ideal for driving LEDs.
Schematic
EVAL BOARD USER’S MANUAL
L1
VOUT
VL
C3
4.7 m F
47 m H
D1
C2
1 m F
U1
VIN
C1
VIN
SW
SHDN
EN
K1
1 m F
R4
CAT4240
FB
GND
R3
(300 mV) 1 k W
R2
LED
200 k W
47 W
R1
2.2 W
Figure 1. CAT4240AEVB Schematic
Table 1. BILL OF MATERIALS
Figure 2. CAT4240AEVB Board
Name
U1
C1
C2
C3
D1
L1
R1
R2
R3
R4
K1
Manufacturer
ON Semiconductor,
Catalyst Group
Taiyo Yuden
Taiyo Yuden
Taiyo Yuden
NXP
NIC
Panasonic
Vishay
Yageo
Yageo
Tyco
Description
High Efficiency Boost LED Driver, SOT23-5
Ceramic Capacitor 1.0 m F/6.3 V X5R, Size 0805
Ceramic Capacitor 1.0 m F/50 V X7R, Size 1210
Ceramic Capacitor 4.7 m F/25 V X5R, Size 0805
Schottky Diode 60 V/1 A, SOD323F
Inductor 47 m H/0.8 A
SMT Resistor 2.2 W /250 mW, Size 1206
Trim Pot 200 W /500 mW, Multi-Turn
SMT Resistor 1 k W /100 mW, Size 0603
SMT Resistor 200 k W /100 mW, Size 0603
2 Pin Header Connector 0.1” Pitch
Part Number
CAT4240
JMK212BJ105KK-T
UMK325BJ105KH-T
TMK212BJ475KG-T
PMEG6010CEJ T/R
NPIS63D470MTRF
ERJ-8GEYJ2R2V
T93YA470KT20
RC0603FR-071KL
RC0603FR-07200KL
640452-2
Units
1
1
1
1
1
1
1
1
1
1
1
? Semiconductor Components Industries, LLC, 2011
September, 2011 ? Rev. 3
1
Publication Order Number:
EVBUM2021/D
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