LP5521TM/NOPB National Semiconductor, LP5521TM/NOPB Datasheet - Page 37

• Manufacturer Part Number: LP5521TM/NOPB
• Description: IC LED DRIVER RGB 25-USMD
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: RGB LED Driverr

Specifications of LP5521TM/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: LP5521TMTR

RESET Register
Address 0DH
Reset value 00H
GPO Register
Address 0EH
Reset value 00H
PROGRAM MEMORY
Address 10H – 6FH
Reset values 00H
Please see chapter LED Controller Programming Commands for further information.
INT_AS_GPO
Command
Go toStart
Set PWM
Branch
Trigger
Ramp
RESET
Wait
Name
End
RESET
Name
GPO
INT
7
7
15
0
0
0
1
1
1
Bit
7:0
RESET
scale
Pre-
14
Bit
1
0
0
1
1
6
6
2
1
0
13
1
0
1
Access
W
Access
RESET
12
Int
R/W
R/W
R/W
5
5
Wait for trigger on channels 5-0
Reset
11
Step time
Active
0
0
Loop Count
10
RESET
Active
High
High
High
RESET Register
4
4
GPO Register
Description
Reset all register values when FFH is written. No acknowledge from
LP5521 after write.
9
37
Description
Enable INT pin GPO function
GPO pin state:
0 = LOW
1 = HIGH
INT pin state (when INT_AS_GPO=1):
0 = LOW
1 = HIGH
8
RESET
3
3
Sign
7
0
X
6
0
INT_AS_GPO
RESET
Send trigger on channels 5-0
2
2
X
5
0
PWM Value
4
0
Increment
Step number
RESET
GPO
3
0
1
1
2
0
www.national.com
RESET
1
0
INT
0
0
X
0
0