MSL2042GU Atmel, MSL2042GU Datasheet - Page 6

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

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

6
MSL2041 MSL2042
19
20
21
22
23
25
26
27
28
29
30
31
32
-
PIN
3, 4, 5
19
20
21
22
23
25
26
27
28
29
30
31
32
NAME
CVDD
CGND
FBO2
GND
VDD
VCC
FBI2
FBI1
VIN
G2
G3
D3
S2
S3
Gate output 2
Gate drive output for external MOSFET 2. Connect G2 to the gate of the external MOSFET
driving LED string 2. If unused, connect G2 to ground.
Source sense input for string 2
Connect S2 to the source of the external MOSFET, and to the current sense resistor for
LED string 2. The full scale LED current is reached when 500mV is across the current sense
resistor. If unused, connect S2 to VDD.
Source sense input for string 3
Connect S3 to the source of the external MOSFET, and to the current sense resistor for
LED string 3. The full scale LED current is reached when 500mV is across the current sense
resistor. If unused, connect S3 to VDD.
Gate output 3
Gate drive output for external MOSFET 3. Connect G3 to the gate of the external MOSFET
driving LED string 3. If unused, connect G3 to ground.
Drain sense input 3
Drain Sense Input for External MOSFET 3. Connect D3 through a resistor to the drain of the
external MOSFET driving LED string 3. If unused, connect D3 to ground.
2.5V internal LDO regulator output
VDD powers internal logic. Bypass VDD to GND with a 2.2µF ceramic capacitor placed close
to VDD.
Connect to VDD
Connect CVDD to VDD.
5V internal LDO regulator output
VCC powers internal logic. Bypass VCC to GND with a 2.2µF ceramic capacitor placed close
to VCC.
Supply voltage input
Connect a 12V ±10% supply to VIN. Bypass VIN to GND with a 1.0µF ceramic capacitor.
Power ground
Connect GND to system ground.
Efficiency Optimizer feedback input 2
Connect FBI2 to FBO2 of the previous device when using the devices in a chain
configuration. If unused, connect FBI2 to ground.
Efficiency Optimizer feedback output 2
Connect FBO2 to the feedback node of the second external string power supply through a
diode, or to FBI2 of the next device when operating the devices in a chain configuration. If
unused, leave FBO2 unconnected.
Efficiency Optimizer feedback input 1
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
Connect all CGND pins to GND as close to the MSL2042 as possible.
DESCRIPTION
Atmel LED Drivers-MSL2041/2042