LP5520TL/NOPB National Semiconductor, LP5520TL/NOPB Datasheet - Page 30
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LP5520TL/NOPB
Manufacturer Part Number
LP5520TL/NOPB
Description
IC LED DRIVER RGB 25-USMD
Manufacturer
National Semiconductor
Series
PowerWise®r
Type
RGB LED Driverr
Datasheet
1.LP5520TLNOPB.pdf
(34 pages)
Specifications of LP5520TL/NOPB
Constant Current
Yes
Topology
PWM, Step-Up (Boost)
Number Of Outputs
3
Internal Driver
Yes
Type - Primary
Backlight, Light Management Unit (LMU)
Type - Secondary
RGB, White LED
Frequency
1.22kHz, 19.52kHz
Voltage - Supply
2.9 V ~ 5.5 V
Voltage - Output
5 V ~ 20 V
Mounting Type
Surface Mount
Package / Case
25-MicroSMD
Operating Temperature
-30°C ~ 85°C
Current - Output / Channel
60mA
Internal Switch(s)
Yes
Efficiency
87%
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LP5520TLTR
www.national.com
boost_output (05H) – Boost Output Voltage Control Register
control (06H) – Control Register
ADC_hi_byte (08H) – Analog Digital Converter Output, bits 8-11
r-0
7
r-0
7
r-0
7
vprog[4:0]
en_autoload
r-0
vout_auto
6
comp_sel
en_boost
adc_ch
nstby
r-0
6
adc_ch
r-0
6
rw-0
5
Bits 4 - 0
r-0
comp_sel
5
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
r-0
5
rw-0
4
Adjustment
0 – compensation depends from the external LM20 temperature
sensor
1 – compensation depends from forward voltage of the red LED
as temperature sensor
0 – compensation based on S1_IN input
1 – compensation based on S2_IN input
0 – internal boost converter loader off
1 – internal boost converter loader off
0 – manual boost output adjustment with boost_output register
1 – automatic adaptive boost output adjustment
0 – boost converter disabled
1 – boost converter enabled
0 – LP5520 standby mode
1 – LP5520 active mode
vprog[4]
r-0
vprog[4:0]
4
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
10000
10001
10010
10011
10100
en_autoload
r-0
4
rw-0
3
30
vprog[3]
rw-0
3
adc[11]
r-0
3
Typical boost output voltage (V)
vout_auto
rw-1
vprog[2]
2
rw-0
2
adc[10]
r-0
2
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
5.0
6.0
7.0
8.0
9.0
en_boost
vprog[1]
rw-0
rw-0
1
1
adc[9]
r-0
1
vprog[0]
nstby
rw-0
rw-0
0
0
adc[8]
r-0
0