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PDF MSL2041 Data sheet ( Hoja de datos )
| Número de pieza | MSL2041 | |
| Descripción | (MSL2041 / MSL2042) Simple 4-string LED Drivers | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MSL2041 (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
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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
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
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
Pin Descriptions
PIN
MSL2041 MSL2042
11
22
3-
4-
5-
66
77
88
99
10 10
11 11
12 12
13 13
14 14
15 15
16, 17, 24 16, 17, 24
18 18
NAME
FBO1
EN
PWM3
PWM2
PWM1
PWM0
FLTB
SCL
SDA
D0
G0
S0
D1
G1
S1
NC
D2
DESCRIPTION
Efficiency optimizer feedback output 1
Connect FBO1 to the feedback node of the first external string power supply through a diode,
or to FBI1 of the next device when operating the devices in a chain configuration.
If unused, leave FBO1 unconnected.
Enable input (Active high)
Drive EN high to turn on the MSL2041/2, drive it low to turn off the MSL2041/2. For automatic
startup connect EN to VIN through a 100kΩ resistor. Toggle EN low to release FLTB and to
return any and all registers to their power-up default values.
PWM dimming input 3
Drive PWM3 with a pulse-width modulated signal to control the brightness of string three.
If unused, connect PWM3 to ground.
PWM dimming input 2
Drive PWM2 with a pulse-width modulated signal to control the brightness of string two.
If unused, connect PWM2 to ground.
PWM dimming input 1
Drive PWM1 with a pulse-width modulated signal to control the brightness of string one.
If unused, connect PWM1 to ground.
Pwm dimming input 0
Drive PWM0 with a pulse-width modulated signal to control the brightness of string zero
(MSL2041) or all strings (MSL2042).
Fault indication output (Open drain, active low)
FLTB sinks current to GND whenever the MSL2041/2 detects and verifies a fault condition.
Toggle EN low (or read the fault registers) to clear FLTB.
I²C serial clock input
SCL is the I²C serial interface clock input.
I²C serial data I/O
SDA is the I²C serial interface bi-directional data line.
Drain sense input 0
Drain Sense Input for External MOSFET 0. Connect D0 through a resistor to the drain of the
external MOSFET driving LED string 0. If unused, connect D0 to ground.
Gate output 0
Gate drive output for external MOSFET 0. Connect G0 to the gate of the external MOSFET
driving LED string 0. If unused, connect G0 to ground.
Source sense input for string 0
Connect S0 to the source of the external MOSFET, and to the current sense resistor for
LED string 0. The full scale LED current is reached when 500mV is across the current sense
resistor. If unused, connect S0 to VDD.
Drain sense input 1
Drain Sense Input for External MOSFET 1. Connect D1 through a resistor to the drain of the
external MOSFET driving LED string 1. If unused, connect D1 to ground.
Gate output 1
Gate drive output for external MOSFET 1. Connect G1 to the gate of the external MOSFET
driving LED string 1. If unused, connect G1 to ground.
Source sense input for string 1
Connect S1 to the source of the external MOSFET, and to the current sense resistor for
LED string 1. The full scale LED current is reached when 500mV is across the current sense
resistor. If unused, connect S1 to VDD
No internal connection
NC is not internally connected .
Drain sense input 2
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
5
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
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
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
11
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet MSL2041.PDF ] | |
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