MSL3088-IUR Atmel, MSL3088-IUR Datasheet - Page 2

• Manufacturer Part Number: MSL3088-IUR
• Description: LED Lighting Drivers 8-Str LED Driver Intrnl Bst Cntr/Phas
• Manufacturer: Atmel

Specifications of MSL3088-IUR

• Rohs: yes
• Input Voltage: 5 V
• Operating Frequency: 200 Hz
• Maximum Supply Current: 18 mA
• Output Current: 350 uA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: VQFN-24
• Minimum Operating Temperature: - 40 C
• Power Dissipation: 1850 mW

Table of Contents
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0 LED Dimming Control ............................................................................... 22
11.0 Ordering Information ................................................................................ 23
8.11
8.12
8.13
8.14
8.15
Packages and Pin Connections ................................................................. 3
Pin Descriptions .......................................................................................... 4
Absolute Maximum Ratings ....................................................................... 5
Electrical Characteristics ........................................................................... 6
Typical Operating Characteristics ............................................................. 7
Block Diagram ........................................................................................... 10
Typical Application Circuit ....................................................................... 11
Detailed Description ................................................................................. 12
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
8.9
8.10
Application Information ............................................................................ 16
9.1
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
9.10
9.11
9.12
9.13
10.1
10.2
Differences between the MSL3086 and MSL3088 ........................................................12
Operating the MSL3086/88 ...........................................................................................12
Boost Regulator Overview .............................................................................................13
Error Amplifier ................................................................................................................13
Gate Driver ....................................................................................................................14
Soft-Start .......................................................................................................................14
Boost Fault Monitoring and Protection ..........................................................................14
LED Current Regulators and PWM Dimming Modes ....................................................14
Efficiency Optimizer (EO) ..............................................................................................14
Fault Monitoring and Auto-Handling ..............................................................................14
Internal Supervisory and LDO .......................................................................................15
Internal Oscillator ...........................................................................................................15
Over Temperature Shutdown .........................................................................................15
Power Saving Modes .....................................................................................................15
I
Bypassing VIN and PVIN ...............................................................................................16
Setting the LED Current ................................................................................................16
Fault Monitoring and Automatic Fault Handling .............................................................16
Setting the LED Short-Circuit Threshold on the MSL3086 ............................................16
Boost Regulator .............................................................................................................17
The Efficiency Optimizer (EO) .......................................................................................18
Setting the Boost Regulator Output Voltage ..................................................................19
Choosing the Input and output Capacitors ....................................................................19
Choosing the Inductor ...................................................................................................19
Setting the External MOSFET Current Limit ..................................................................20
Choosing the Switching MOSFET .................................................................................20
Choosing the Output Rectifier .......................................................................................20
Loop Compensation ......................................................................................................20
External I
Phase Shifted LED Dimming Signals ............................................................................22
2
C Serial Interface and Driver Control...........................................................................15
2
C Control of LED Brightness .........................................................................22
8-String 60mA LED Drivers with Integrated Boost Controller and Phase Shifted Dimming
Atmel MSL3086/MSL3088 Datasheet
2