MSL2042GU Atmel, MSL2042GU Datasheet

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MSL2042GU

Manufacturer Part Number
MSL2042GU
Description
LED Lighting Drivers 4Str RGB or White LED Driver lighting
Manufacturer
Atmel
Datasheet

Specifications of MSL2042GU

Rohs
yes
Input Voltage
10.8 V to 13.2 V
Maximum Supply Current
31.5 mA
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SOP-32
Minimum Operating Temperature
- 40 C
Power Dissipation
1576 mW
Factory Pack Quantity
1000
Atmel LED Drivers
MSL2041/MSL2042
Low-cost, Simple 4-string LED Drivers with External Current Sink
MOSFETs, 5000:1 Dimming Range and Per String PWM Input
Datasheet Brief

Related parts for MSL2042GU

MSL2042GU Summary of contents

Page 1

... Atmel LED Drivers MSL2041/MSL2042 Low-cost, Simple 4-string LED Drivers with External Current Sink MOSFETs, 5000:1 Dimming Range and Per String PWM Input Datasheet Brief ...

Page 2

... LCD-TVs • PC Monitors • Industrial Displays • General Illumination • Street-lighting • Post-regulated or Offline Powered LED Strings Ordering Information AUTO-PHASE PART NO. PWM INPUTS MSL2041GU 4 MSL2042GU serial interface is PACKAGE DELAY NO 32 pin, 300mil SOP YES 32 pin, 300mil SOP Atmel LED Drivers-MSL2041/2042 ...

Page 3

... Adaptive SourcePower ™ Correction Optimizes String Power Supply for Maximum Efficiency Application Circuit Atmel LED Drivers-MSL2041/2042 Atmel LED Drivers-MSL2041/MSL2042 MOSFETs, 5000:1 Dimming Range and Per String PWM Input • Multiple MSL2041/2s Share a String Supply and Automatically Negotiate the Optimum Supply Voltage • ...

Page 4

... MSL2042 25 VDD SCL SDA FBI1 31 FBO2 30 FBI2 29 GND 28 VIN 27 VCC 26 CVDD 25 VDD (TOP VIEW Atmel LED Drivers-MSL2041/2042 ...

Page 5

... Drain sense input Drain Sense Input for External MOSFET 2. Connect D2 through a resistor to the drain of the external MOSFET driving LED string 2. If unused, connect D2 to ground. Atmel LED Drivers-MSL2041/2042 Atmel LED Drivers-MSL2041/MSL2042 MOSFETs, 5000:1 Dimming Range and Per String PWM Input DESCRIPTION 5 ...

Page 6

... FBO2 unconnected. Efficiency Optimizer feedback input FBI1 Connect FBI1 to FBO1 of the previous device when using the devices in a chain configuration. If unused, connect FBI1 to ground. Connect to ground - CGND Connect all CGND pins to GND as close to the MSL2042 as possible. 6 DESCRIPTION Atmel LED Drivers-MSL2041/2042 ...

Page 7

... SOP (derate 28.7mW/°C above T Ambient Operating Temperature Range T Junction Temperature .................................................................................................................................................................................... +125°C Storage Temperature Range ............................................................................................................................................ -65°C to +125°C Lead Soldering Temperature, 10s .......................................................................................................................................................+300°C Atmel LED Drivers-MSL2041/2042 Atmel LED Drivers-MSL2041/MSL2042 MOSFETs, 5000:1 Dimming Range and Per String PWM Input = +70°C) ..................................................................................................1576mW .................................................................. -40° ...

Page 8

... V 0 VDD 0 VDD 1.9 1.0 V 150 mV 0 0.1 μA 5 μA 9.0 9.6 10.2 V 109 mA -18 mA 465 490 498.75 mV 455.7 524.3 mV 242.5 250 257.5 mV 235 265 mV 0.50 ±2.2 % 0.75 ±3.2 135 °C ±2 % 1.1 μA 210 μA MIN TYP MAX UNIT 0 50,000 Hz 0 100 % Atmel LED Drivers-MSL2041/2042 ...

Page 9

... SDA and SCL inputs and the SDA/SCL bus lines without exceeding the maximum allowable rise time. Note 6. MSL2041/2 includes input filters on SDA and SCL that suppress noise less than 50ns. Note 7. Parameter is guaranteed by design and not production tested. Atmel LED Drivers-MSL2041/2042 Atmel LED Drivers-MSL2041/MSL2042 MOSFETs, 5000:1 Dimming Range and Per String PWM Input CONDITIONS 1/t ...

Page 10

... Block Diagram Figure 1. Atmel LED Drivers-MSL2041/2 Block Diagram 10 Atmel LED Drivers-MSL2041/2042 ...

Page 11

... Low-cost, Simple 4-string LED Drivers with External Current Sink Typical Application Circuit Figure 2. Atmel LED Drivers-MSL2042 driving four LED strings at 350mA peak current per string, controlling a single power supply Atmel LED Drivers-MSL2041/2042 Atmel LED Drivers-MSL2041/MSL2042 MOSFETs, 5000:1 Dimming Range and Per String PWM Input ...

Page 12

... LEDs, plus the headroom required for the external FET, must be equal to or greater than the 6V threshold to generate a fault. Typically, two LEDs in a string must be shorted to cause a short circuit fault, Atmel LED Drivers-MSL2041/2042 ...

Page 13

... FLTB pulling low. Figure 3. Open-Circuit and Short-Circuit Detection Block Diagram Figure 3. Open-circuit and Short-circuit Detection Block Diagram Atmel LED Drivers-MSL2041/2042 Atmel LED Drivers-MSL2041/MSL2042 MOSFETs, 5000:1 Dimming Range and Per String PWM Input Over Temperature Shutdown The MSL2041/2 includes an automatic over- temperature shutdown. If the die temperature exceeds 135° ...

Page 14

... Table 1. String EO Assignments Figure 4. EO Configuration When Using a Single String Power Supply 14 Atmel LED Drivers-MSL2041/2042 ...

Page 15

... Low-cost, Simple 4-string LED Drivers with External Current Sink Figure 5. EO Configuration When Using Two String Power Supplies Atmel LED Drivers-MSL2041/2042 Atmel LED Drivers-MSL2041/MSL2042 MOSFETs, 5000:1 Dimming Range and Per String PWM Input 15 ...

Page 16

... EO fault and turn off, that the string supply is forced to its maximum value and all remaining active strings typically detect short circuit faults and also turn off. is less than the 4ms EO TOP , N-1 resistor equation for the TOP Atmel LED Drivers-MSL2041/2042 ...

Page 17

... Low-cost, Simple 4-string LED Drivers with External Current Sink Figure 6. EO Chain Configuration of Two Devices, Six Strings and a Single String Power Supply Atmel LED Drivers-MSL2041/2042 Atmel LED Drivers-MSL2041/MSL2042 MOSFETs, 5000:1 Dimming Range and Per String PWM Input 17 ...

Page 18

... Some Figure 8. Feed Forward Capacitor Figure 8. Feed Forward Capacitor and V Values Determined DARK F(DARK) LED I (µA) V (V) PART # DARK F(DARK) LW Y1SG 1.72 2.285 LW G6SP 1.67 2.276 1.72 2.195 may cause false LED short circuit D holds the node above the D , but Atmel LED Drivers-MSL2041/2042 ...

Page 19

... Efficiency 0x14 FBODAC1* Optimizer DAC 0x15 FBODAC2* Readback 0x16 - 0x17 0x18 FBOSTAT* FBO Status * Read Only Registers Atmel LED Drivers-MSL2041/2042 Atmel LED Drivers-MSL2041/MSL2042 MOSFETs, 5000:1 Dimming Range and Per String PWM Input REGISTER DATA STR3EN UNUSED CTOEN ...

Page 20

... Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN THE ATMEL TERMS AND CONDITIONS OF SALES LOCATED ON THE ATMEL WEBSITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT ...

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