MIC3230_11 Datasheet, PDF (2/19 Pages) Micrel Semiconductor – Constant Current Boost Controller for Driving High Power LEDs

Micrel, Inc.
Typical Application
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
Figure 1. Typical Application of the MIC3230 LED Driver
MIC3230/1/2
VOUT
COUT
4.7µF
100V
LED 1
LED X
ILED Return
Product Option Matrix
Input Voltage
Synchronization
Dither
Frequency Range
Package
MIC3230
6V to 45V
Yes
No
Adj from 100kHz to 1MHz
16-pin EPAD TSSOP
12-pin 3mm × 3mm MLF^®
MIC3231
6V to 45V
No
Yes
Adj from 100kHz to 1MHz
16-pin EPAD TSSOP
12-pin 3mm × 3mm MLF^®
MIC3232
6V to 45V
No
No
Fixed Freq. = 400kHz
10-pin MSOP
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
16-pin EPAD TSSOP
12-pin 3mm x 3mm MLF^®
16-pin EPAD TSSOP
12-pin 3mm x 3mm MLF^®
10-pin MSOP
Lead Finish
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
March 2011
2
M9999-030311-D