LP5520TL/NOPB National Semiconductor, LP5520TL/NOPB Datasheet - Page 30

• Manufacturer Part Number: LP5520TL/NOPB
• Description: IC LED DRIVER RGB 25-USMD
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: RGB LED Driverr

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

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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