LP5521TMX/NOPB National Semiconductor, LP5521TMX/NOPB Datasheet - Page 33

• Manufacturer Part Number: LP5521TMX/NOPB
• Description: IC LED DRIVER RGB 25-USMD
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: RGB LED Driverr

Specifications of LP5521TMX/NOPB

• Constant Current: Yes
• Topology: PWM, Switched Capacitor (Charge Pump)
• Number Of Outputs: 3
• Internal Driver: Yes
• Type - Primary: Backlight, Light Management Unit (LMU)
• Type - Secondary: RGB
• Frequency: 1.25MHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Voltage - Output: 4.55V
• Mounting Type: Surface Mount
• Package / Case: 20-MicroSMD
• Operating Temperature: -30°C ~ 85°C
• Current - Output / Channel: 25.5mA
• Internal Switch(s): Yes
• Efficiency: 95%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LP5521TMX

B Channel PWM Control (B_PWM)
Address 04H
Reset value 00H
R Channel Current (R_CURRENT)
Address 05H
Reset Value AFH
R_CURRENT
B_PWM
Name
Name
7
7
Bit
7:0
Bit
7:0
6
6
Access
R/W
Access
Active
R/W
5
5
Description
B Channel PWM value during direct control operation mode
R CURRENT Register
Active
R_CURRENT[7:0]
B PWM Register
4
4
B_PWM[7:0]
33
Description
Current setting
0000 0000b = 0.0 mA
0000 0001b = 0.1 mA
0000 0010b = 0.2 mA
0000 0011b = 0.3 mA
0000 0100b = 0.4 mA
0000 0101b = 0.5 mA
0000 0110b = 0.6 mA
...
1010 1111b = 17.5 mA (default)
...
1111 1011b = 25.1 mA
1111 1100b = 25.2 mA
1111 1101b = 25.3 mA
1111 1110b = 25.4 mA
1111 1111b = 25.5 mA
3
3
2
2
1
1
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