Semiconductor Components Industries, LLC, 2011
September, 2011
−
Rev. 3
1
Publication Order Number:
EVBUM2020/D
CAT4139AEVB
CAT4139 LED Driver
Evaluation Board
User's Manual
Introduction
This document describes the CAT4139AEVB evaluation board for
the CAT4139 high efficiency step-up LED driver. The CAT4139
delivers an accurate constant current ideal for driving LEDs.
Schematic
Figure 1. CAT4139AEVB Schematic
VL
R4
200 k
W
C3
4.7
m
F
GND
VIN
SW
FB
SHDN
CAT4139
U1
L1
22
m
H
D1
R3
1 k
W
C2
1
m
F
R1
2.2
W
R2
47
W
LED
VOUT
C1
1
m
F
R5
0
W
VIN
EN
K1
(300 mV)
Figure 2. CAT4139AEVB Board
Table 1. BILL OF MATERIALS
Name
Manufacturer
Description
Part Number
Units
U1
ON Semiconductor,
Catalyst Group
High Efficiency Boost LED Driver, SOT23-5
CAT4139
1
C1
Taiyo Yuden
Ceramic Capacitor 1.0
m
F/6.3 V X5R, Size 0805
JMK212BJ105KK-T
1
C2
Taiyo Yuden
Ceramic Capacitor 1.0
m
F/50 V X7R, Size 1210
UMK325BJ105KH-T
1
C3
Taiyo Yuden
Ceramic Capacitor 4.7
m
F/6.3 V X5R, Size 0805
JMK212BJ475KD-T
1
D1
TSC
Schottky Diode 40 V/1 A, Sub SMA
SS14L
1
L1
NIC
Inductor 22
m
H/0.7 A
NPIS43D220MTRF
1
R1
Panasonic
SMT Resistor 2.2
W
/250 mW, Size 1206
ERJ-8GEYJ2R2V
1
R2
Vishay
Trim Pot 200
W
/500 mW, Multi-Turn
T93YA470KT20
1
R3
Yageo
SMT Resistor 1 k
W
/100 mW, Size 0603
RC0603FR-071KL
1
R4
Yageo
SMT Resistor 200 k
W
/100 mW, Size 0603
RC0603FR-07200KL
1
R5
Yageo
SMT Resistor 0
W
/125 mW, Size 0805
RC0805JR-070RL
1
K1
Tyco
2 Pin Header Connector 0.1” Pitch
640452-2
1
http://onsemi.com
EVAL BOARD USER’S MANUAL