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PDF LPD1886 Data sheet ( Hoja de datos )
| Número de pieza | LPD1886 | |
| Descripción | Single-line three-channel with 4096 levels PWM programmable constant current LED driver chip | |
| Fabricantes | Insomnia Lighting | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LPD1886 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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Insomnia Lighting
LPD1886 IC Datasheet
LPD1886 IC Datasheet
Summary
LPD1886 is single-line three-channel with 4096 levels PWM programmable constant
current LED driver chip. It is a three-channel dedicated circuit for LED driving and control,
internally integrated the bandgap reference, digital interface, PWM control and constant
current driving circuit. It can achieve multicolor emitting system of the outdoor led displays,
led guardrail tubes and led strips, via the control of peripheral circuit.
Features
1. Output three-channel constant current driving, the constant driving current is 17mA,
Voltage output up to 12V.
2. Intergrated constant voltage circuit, workable from 5V to 24V by connecting electric
resistance in series.
Insomnia Lighting3. Single line transmission mode, the speed of DATA is changeable, the MAX is 16MHz.
4. Regeneration mechanism of interior wave form, the signal driving ability is very strong,
can support more than 1700pixels'(25FPS) cascade connection, the distance between
any two pixels can be more than 6m.
5. Double oscillating circuits are built in, support FREE-RUN mode, the renovate frequency
is more than 400Hz. Distinctive design of timing sequence, convenient for the lower cost
controller programmable design.
6. Each channel has independent linear PWM grayscale control circuit, 4096 grayscales
effect can be really achieved.
7. Intergrated the holistic locking and saving function, each frame data will be locked and
saved automatically 10us later after sending out, to avoid the picture's inconsistent
appearance.
8. The reserved driving current of the red color channel is 1.5mA more than the blue color
channel's, it makes the colour balance effect is better.
8. Industrial level design, makes the anti-interference capability is stronger.
8. Encapsulation: DIP8 and SOP8.
Applications
1. LED decorative lighting system
2. PWM signal generator
3. LCD backlight driver
www.insomnialighting.com
1 page  
Insomnia Lighting
LPD1886 IC Datasheet
T0H
T0L
T1H
T1L
Treset
Description
high level time of 0 code
low level time of 0 code
high level time of 1 code
low level time of 1 code
reset code, low level time
recomme
MIN, ns MAX, ns nded
value, ns
Note
150 280 200
500 10000 600 T0H+T0L, T1H+T1L
should be more than
450 9000 600 800ns
150 10000 200
24000
Power Supplier Configuration
After connection with resitors in series to the chip, can use 5V to 24V power supply, meanwhile,
1pc 104 capacitor parallelly connected with VDD anti to earth is better. And the capacitor should be
as close to the IC as possible. The connected resistors in series should choose defferent values,
depended on the supply voltage.
Insomnia Lightingsupplyvoltage
the value of connected resistors in series(ohm,1/4W)
5V 50
12V 1.8K
24V 4.5K
Tips:
The chip consumes less than 2mA current by itself, but if there is a long signal line between the
chips, a lower value resistor is recommended, to gain the better cascade connection performance.
Typical Application Circuit : Constant Current Driving Mode
www.insomnialighting.com
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| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet LPD1886.PDF ] | |
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