Datasheet
Table Of Contents
- Features
- Typical Applications
- 1. Introduction
- 2. Ordering Information
- 3. Application Circuit
- 4. Absolute Maximum Ratings
- 5. Electrical Characteristics
- 6. Block Diagram
- 7. Pinout and Pin Description
- 8. Typical Application Circuit
- 9. Detailed Description
- 10. Fault Conditions
- 11. Applications Information
- 12. Control Registers
- 13. Detailed Register Descriptions
- 13.1 RAM (0x00 through 0x1F)
- 13.2 Main String Reference Voltage register (MREF, 0x20)
- 13.3 Color-Adjust String Reference Voltage register (CAREF, 0x21)
- 13.4 Fault Disable register (FAULT, 0x22)
- 13.5 Fault Status register (FAULTSTAT, 0x23), Read Only
- 13.6 Sleep register (SLEEP, 0x24)
- 13.7 Main String Duty Cycle register, High Byte (MDUTYHIGH, 0x34)
- 13.8 Main String Duty Cycle register, Low Byte (MDUTYLOW, 0x35)
- 13.9 Color Adjust String Duty Cycle register, High Byte (CADUTYHIGH, 0x36)
- 13.10 Color Adjust String Duty Cycle register, Low Byte (CADUTYLOW, 0x37)
- 13.11 Efficiency Optimizer Control Register (EOCTRL, 0x40)
- 13.12 Registers 0x60 and 0x61, EEPROM Access
- 14. I²C Serial Interface
- 15. Packaging Information
- 16. Datasheet Revision History
- Table of Contents
16
MSL2023/2024 [DATASHEET]
42063A–LED–02/2013
8. Typical Application Circuit
MSL2023/24 controlling the output of an isolated PFC controller; a linear current sink regulates the white LED current
and a floating buck converter regulates the color LED string current.
Figure 8-1. MSL2023 typical application circuit.
AGND 23 23
Analog Ground
Connect AGND to system ground.
VDD 24 24
2.5V Internal Voltage
Connect 10µF bypass capacitor from VDD to AGND.
EP EP EP
Exposed Pad
Connect EP to a large copper plane connected to PGND and AGND.
Name
Pin
DescriptionMSL2023 MSL2024
G
DRV
AVIN12V
AGND
AC-DC
ISOLATED
With PFC
SDA SCL
MSL2023
LED DRIVER
REXT
CS
+
-
1.5Ω
2.7Ω
FLTB
FBO
EN
WHITE
LEDS
COLOR
LEDS
PGND
VAC
330μH
D
PVIN
VCC
VDD
TOFF
S
46.4kΩ
10μF
10μF
1μF
1μF
45.3kΩ
IRFR110
FDD3860
MBR0560
R
D
100kΩ
µC