LP55281TL/NOPB National Semiconductor, LP55281TL/NOPB Datasheet - Page 23

• Manufacturer Part Number: LP55281TL/NOPB
• Description: IC LED DRIVER RGB 36-USMD
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: RGB LED Driverr

Specifications of LP55281TL/NOPB

• Constant Current: Yes
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 12
• Internal Driver: Yes
• Type - Primary: Light Management Unit (LMU)
• Type - Secondary: Color, RGB
• Frequency: 1MHz ~ 2MHz
• Voltage - Supply: 3 V ~ 5.5 V
• Voltage - Output: 4 V ~ 5.3 V
• Mounting Type: Surface Mount
• Package / Case: 36-MicroSMD
• Operating Temperature: -30°C ~ 85°C
• Current - Output / Channel: 300mA
• Internal Switch(s): Yes
• Efficiency: 88%
• For Use With: LP55281RLEV - BOARD EVAL FOR LP5528 RGB DRIVER
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LP55281TLTR

When a READ function is to be accomplished, a WRITE function must precede the READ function, as shown in the Read Cycle
waveform.
•
•
•
•
•
I
V
Note: Data guaranteed by design
2
C Timing Parameters
DD1,2
w = write (SDA = 0)
r = read (SDA = 1)
ack = acknowledge (SDA pulled down by either master or slave)
rs = repeated start
id = 7-bit device address
Symbol
10
C
= 3.0V to 4.5V, V
1
2
3
4
5
6
7
8
9
b
DDIO
Bus Free Time between a STOP and a START Condtion
= 1.65V to V
Setup Time for a Repeated START Condition
Hold Time (repeated) START condition
Capacitive Load for Each Bus Line
Set-up Time for STOP condition
Rise Time of SDA and SCL
Fall Time of SDA and SCL
DD1,2
Data Setup TIme
Clock High Time
Clock Low Time
Data Hold Time
Parameter
Register Write Format
I
2
C Timing Diagram
23
20 + 0.1C
15 + 0.1C
Min
600
600
100
600
0.6
1.3
1.3
50
10
Limit
b
b
Max
300
300
200
20201193
20201154
www.national.com
Units
pF
µs
µs
ns
ns
ns
ns
ns
ns
ns
µs