MIC3230 Datasheet, PDF (2/20 Pages) Micrel Semiconductor – Constant Current Boost Controller for Driving High Power LEDs

Micrel, Inc.
Typical Application
MIC3230/1/2
VIN
CIN
4.7µF/50v
ENABLE
PWMD
Synch to other MIC3230
R2
100k
RFS
16.5k
CCOMP
10nF
C3
10µF
10V
Analog ground
L
47µH
D1
VIN
EN
OVP
PWMD
SYNC
FS
COMP
VDD
AGND
MIC3230/31
DRV
EPAD
RSLC
51
IS
IADJ ^{VFB = 0.25V}
PGND
RADJ
1/4W
Q1
RCS
1/2W
Power ground
R8
100k
R9
4.33k
VOUT
COUT
4.7µF
100V
LED 1
LED X
ILED Return
Figure 1. Typical Application of the MIC3230 LED Driver
Product Option Matrix
Input Voltage
Synchronization
Dither
Frequency Range
Package
MIC3230
6V to 45V
Yes
No
Adj from 100kHz to 1MHz
EPAD TSSOP-16
3mm × 3mm MLF^®-12
MIC3231
6V to 45V
No
Yes
Adj from 100kHz to 1MHz
EPAD TSSOP-16
3mm × 3mm MLF^®-12
MIC3232
6V to 45V
No
No
Fixed Freq. = 400kHz
MSOP-10
Ordering Information
Part Number
MIC3230YTSE
MIC3230YML
MIC3231YTSE
MIC3231YML
MIC3232YMM
Temperature Range
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
Package
EPAD TSSOP-16
3mm x 3mm MLF^®-12L
EPAD TSSOP-16
3mm x 3mm MLF^®-12L
MSOP-10
Lead Finish
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
January 2009
2
M9999-011409-A