MSL3086-IU Atmel, MSL3086-IU Datasheet - Page 11

• Manufacturer Part Number: MSL3086-IU
• Description: LED Lighting Drivers 8-Str LED Driver Internal Boost Cntr
• Manufacturer: Atmel

Specifications of MSL3086-IU

• 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

7.0 Typical Application Circuit
Typical Application Circuit
Figure 2. Typical Operating Circuit for Eight 60mA Strings of 10 LEDs each for V
Detailed Description
The MSL3086/87/88 are LED drivers with eight internal current regulators capable of driving up to 60mA LED current
each. The MSL3086/88 feature an integrated boost regulator controller to power the LED strings, while the MSL3087
controls an external DC/DC converter. They provide a complete LED driver solution for multi-LED string applications. A
single resistor sets the LED current for all strings. The MSL3086/87/88 support PWM LED dimming up to 4095:1 and
feature automatic phase shifted dimming, and dimming synchronized with external digital signals. The MSL3088 features
independent frequency and duty cycle control inputs. All devices feature optional register-set PWM dimming, fault and
other controls via the I
Guide.
The MSL3086/87/88 include comprehensive fault monitoring and automatic fault handling. Automatic fault handling allows
the MSL3086/87/88 to operate without any microcontroller or FPGA, while control via I
and device control for more complex applications.
©
INTERFACE
Figure 7.1. Typical Application Circuit
Atmel Inc., 2011. All rights reserved.
OUTPUT
ENABLE
FAULT
I
INPUT
2
PWM
82k
C
93.1k
21
14
20
16
15
3
4
5
EN
SDA
SCL
PWM
FLTB
SCTH
ILED
CGND
2
VIN
PGND
2
C serial interface; for interface information see the MSL3040/50/60/86/87/88/89 Programming
17
V
IN
1 F
MSL3086
= 5V
19
PVIN
EP
GND
2x 1 F
COMP
GATE
STR5
STR6
STR0
STR1
STR2
STR3
STR4
STR7
24
CS
FB
V
PWR
18
22
1
23
6
7
8
9
10
11
12
13
= 6.5V TO 16V
100nF
30k
FDC5612
12.5m
Page 11 of 26
10 H
B380
8-String 60mA LED Drivers with Integrated Boost Controller and Phase Shifted Dimming
10 F
220pF
43.2k
3.12k
10 F
V
2x
LED
Atmel MSL3086/MSL3088 Datasheet
IN
2
C allows customized fault handling
= 6.5V to 16V.
11