MAX14514 Datasheet, PDF (12/14 Pages) Maxim Integrated Products – Dual Electroluminescent Lamp Driver

Dual Electroluminescent Lamp Driver
R_C
R_D
1MΩ
1500Ω
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
HIGH-
VOLTAGE
DC
SOURCE
Cs
100pF
STORAGE
CAPACITOR
DEVICE
UNDER
TEST
R_C
50MΩ TO 100MΩ
R_D
330Ω
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
HIGH-
VOLTAGE
DC
SOURCE
Cs
150pF
STORAGE
CAPACITOR
DEVICE
UNDER
TEST
Figure 1a. Human Body ESD Test Model
I_P 100%
90%
Ir
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
AMPS
36.8%
10%
0
0 _tRL
TIME
t_DL
CURRENT WAVEFORM
Figure 1b. Human Body Current Waveform
Figure 1c. IEC 61000-4-2 ESD Test Model
I
100%
90%
10%
tr = 0.7ns TO 1ns
30ns
t
60ns
Figure 1d. IEC 61000-4-2 ESD Generator Current Waveform
Design Procedure
LX Inductor Selection
The recommended inductor values are 220µH/330µH.
For most applications, series resistance (DCR) should
be below 8Ω for reasonable efficiency. Do not exceed
the inductor’s saturation current.
Table 2. Inductor Vendors
INDUCTOR VALUE (µH)
220
330
470
220
330
470
220
220
VENDOR
TOKO
Coilcraft
Coilcraft
Coilcraft
Coilcraft
Coilcraft
Cooper Bussmann
Cooper Bussmann
WEBSITE
www.tokoam.com
www.coilcraft.com
www.coilcraft.com
www.coilcraft.com
www.coilcraft.com
www.coilcraft.com
www.cooperet.com
www.cooperet.com
PART
D312C 1001BS-221M
DO1608C-334ML
DO1608C-474ML
LPS4018-224ML
LPS4018-334ML
LPS4018-474ML
SDH3812-221-R
SD3110-221-R
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