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LP3954RL/NOPB датащи(PDF) 47 Page - Texas Instruments

номер детали LP3954RL/NOPB
подробное описание детали  Advanced Lighting Management Unit
PDF  60 Pages
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LP3954RL/NOPB датащи(HTML) 47 Page - Texas Instruments

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LP3954
www.ti.com
SNVS340D – JUNE 2005 – REVISED MARCH 2013
ADC_OUTPUT (0CH) – ADC DATA REGISTER
D7
D6
D5
D4
D3
D2
D1
D0
data[7:0]
r-0
r-0
r-0
r-0
r-0
r-0
r-0
r-0
data[7:0]
Bits 7-0
Data register ADC (Audio input, light or temperature sensors)
BOOST_OUTPUT (0DH) – BOOST OUTPUT VOLTAGE CONTROL REGISTER
D7
D6
D5
D4
D3
D2
D1
D0
Boost[7:0]
rw-0
rw-0
rw-1
rw-1
rw-1
rw-1
rw-1
rw-1
Adjustment
Boost[7:0]
Typical boost output (V)
0000 0000
4.00
0000 0001
4.25
0000 0011
4.40
Boost[7:0]
Bits 7-0
0000 0111
4.55
0000 1111
4.70
0001 1111
4.85
0011 1111
5.00 (default)
0111 1111
5.15
1111 1111
5.30
BOOST_FRQ (0EH) – BOOST FREQUENCY CONTROL REGISTER
D7
D6
D5
D4
D3
D2
D1
D0
freq_sel[2:0]
r-0
r-0
r-0
r-0
r-0
rw-1
rw-1
rw-1
Adjustment
freq_sel[2:0]
Frequency
freq_sel[2:0]
Bits 7-0
1xx
2.00 MHz
01x
1.67 MHz
00x
1.00 MHz
HC_FLASH (10H) – HIGH CURRENT FLASH DRIVER CONTROL REGISTER
D7
D6
D5
D4
D3
D2
D1
D0
hc_pwm
fl_t[1:0]
hc[1:0]
en_hcflash
r-0
r-0
rw-0
rw-0
rw-0
rw-0
rw-0
rw-0
0 – PWM for high current flash driver disabled
hc_pwm
Bit 5
1 – PWM for high current flash driver enabled
Flash duration for high current driver
fl_t[1:0]
Typical flash duration
00
200 ms
fl_t[1:0]
Bits 4-3
01
400 ms
10
600 ms
11
According EN_FLASH pin on duration
Copyright © 2005–2013, Texas Instruments Incorporated
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Product Folder Links: LP3954



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