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參數(shù)資料
| 型號： | LP3936SLX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅動器 |
| 英文描述： | Lighting Management System for Six White LEDs and One RGB or FLASH LED |
| 中文描述： | LED DISPLAY DRIVER, QCC32 |
| 封裝： | 4.5 X 5.5 MM, 0.80 MM HEIGHT, 0.50 PITCH, CSP-32 |
| 文件頁數(shù)： | 19/20頁 |
| 文件大?。?/td> | 520K |
| 代理商： | LP3936SLX |
Recommended External Components
(Continued)
List of Recommended External Components
Symbol
C
VDD1
C
VDD2
C
OUT
C
IN
C
VDDIO
C
VDDA
RT
RDO
C
VREF
L
BOOST
D
OUT
RGB
R
R
, R
G
, R
B
Current Limit Resistors
LEDs
White LEDs
Symbol Explanation
Value
1
1
10
10
1
1
82
100
100
10
0.3
Unit
μF
μF
μF
μF
μF
μF
k
k
nF
μH
V
Type
V
DD1
bypass capacitor
V
DD2
bypass capacitor
Output capacitor from FB to GND
Input capacitor from Battery Voltage to GND
V
DDIO
bypass capacitor
Internal LDO output capacitor, between V
DDA
and GND
Oscillator Frequency Bias Resistor
DO output pull-up resistor
Reference Voltage Capacitor, between V
REF
and GND
Boost converter inductor
Rectifying Diode, V
F
@
Maxload
RGB LED
Ceramic, X7R
Ceramic, X7R
Ceramic, X7R/Y5V
Ceramic, X7R/Y5V
Ceramic, X7R
Ceramic, X7R
1% (Note 16)
Ceramic, X7R
Shielded, Low ESR, I
SAT
A
1A
Schottky Diode
User Defined
(See Application Note AN-1293 for resistor size calculation)
Note 16:
Resistor RT tolerance change will change the timing accuracy of the RGB block. Also the boost converter switching frequency will be affected.
Control Registers
All user accessible control registers and register bits are shown in the following table.
ADDR
00H
01H
02H
03H
04H
05H
06H
07H
08H
09H
0AH
0BH
0CH
0DH
2AH
2BH
SETUP
D7
D6
D5
D4
D3
rsw
ron[3]
roff[3]
gon[3]
goff[3]
bon[3]
boff[3]
rduty[3]
gduty[3]
bduty[3]
wled1[3]
en_ambave
ain[3]
boost[3]
wled2[3]
D2
gsw
ron[2]
roff[2]
gon[2]
goff[2]
bon[2]
boff[2]
rduty[2]
gduty[2]
bduty[2]
wled1[2]
en_ambadc
ain[2]
boost[2]
wled2[2]
D1
bsw
ron[1]
roff[1]
gon[1]
goff[1]
bon[1]
boff[1]
rduty[1]
gduty[1]
bduty[1]
wled1[1]
en_4led
ain[1]
boost[1]
wled2[1]
D0
Control register
rgb_pwm rgb_start
ron
roff
gon
goff
bon
boff
rslope, rduty
rslope[3]
gslope, gduty
gslope[3] gslope[2] gslope[1]
bslope, bduty
bslope[3] bslope[2] bslope[1]
wled current 1
wled1[7]
enables
overflow
Amb. Light data
ain[7]
boost output
boost[7]
wled current 2
wled2[7]
ext pwm enable
cycle[1]
ron[5]
roff[5]
gon[5]
goff[5]
bon[5]
boff[5]
rslope[1]
cycle[0]
ron[4]
roff[4]
gon[4]
goff[4]
bon[4]
boff[4]
rslope[0]
gslope[0]
bslope[0]
wled1[4]
en_flash
ain[4]
boost[4]
wled2[4]
en_redpwm en_greenpwm en_bluepwm en_4ledpwm en_2ledpwm
pfm_mode
ron[0]
roff[0]
gon[0]
goff[0]
bon[0]
boff[0]
rduty[0]
gduty[0]
bduty[0]]
wled1[0]
en_2led
ain[0]
boost[0]
wled2[0]
ron[6]
roff[6]
gon[6]
goff[6]
bon[6]
boff[6]
rslope[2]
wled1[6]
nstby
ain[6]
boost[6]
wled2[6]
wled1[5]
en_boost
ain[5]
boost[5]
wled2[5]
Default value of each register is 0000 0000 except the following
— boost output default is 0000 0111 = 07h (4.55V).
— enables default is x010 0000 = 20h (boost enabled)
— ext_pwm_enable default is 0001 1100 = 1Ch (RGB_EN control enabled for color outputs)
Register 0Ch all bits (ain[7:0]) and bit D7 in register 0Bh (overflow) are read only. All other bits are read-write.
L
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LP3936SLX/NOPB | 功能描述:LED照明驅動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP3937ILQ-AL | 制造商:Texas Instruments 功能描述:Electronic Component |
| LP3939 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Power Amplifier Driver For Dual Band CDMA Handsets |
| LP3939-ES1 | 制造商:Texas Instruments 功能描述:TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PQCC16 |
| LP3939ILQ | 制造商:Texas Instruments 功能描述:TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PQCC16 |
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