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PDF BP1808 Data sheet ( Hoja de datos )
| Número de pieza | BP1808 | |
| Descripción | Buck and Buck-Boost DC/DC LED Driver | |
| Fabricantes | BPS | |
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1. BP1808 pinout datasheet  Hay una vista previa y un enlace de descarga de BP1808 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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BP1808
晶丰明源半导体 Boost, Buck and Buck-Boost DC/DC LED Driver
Description
The BP1808 is a DC/DC constant current LED driver
with an integrated 70V/300mΩ MOSFET designed
for a wide input-voltage range of 3V to 60V. The
BP1808 can be configured as Buck, Boost and Buck-
Boost topology.
With a current sense reference of 200mV, the LED
current is programmed by an external current sense
resistor and the power loss is minimized. The BP1808
allows both analog and PWM dimming by DIM pin.
The fixed 420kHz operating frequency minimizes size
of external inductor, input and output capacitor.
Current mode operation provides fast transient
response and easy loop stability.
BP1808 offers rich protection functions including
VDD under voltage protection, output over voltage
protection, cycle-by-cycle peak current limit and
thermal regulation.
The BP1808 adopts SOP8-EP package for enhanced
power dissipation.
Features
Wide 3V to 60V Input Voltage Range
Supporting Boost, Buck-Boost, Buck Topology
Integrated 70V/300mΩ MOSFET
±3% LED Output Current Accuracy
Combined Analog and PWM Dimming
Fixed 420kHz operating Frequency
Adjustable Soft-Start
Cycle-by-Cycle Peak Current Limiting
VDD Under Voltage Protection
Programmable Over Voltage Protection
Thermal Regulation Function
Available in SOP8-EP Package
Applications
MR16 LED Lighting
Smart Dimming LED lighting
Automotive LED Lighting
Solar LED lighting
Other LED Lighting
Typical Application (Boost)
VIN
5 SW
VOUT 7
6 VDD
CS 8
BP1808
2 COMP
OVP 1
option
3 DIM
GND 4
Ordering Information
Figure 1. Typical application (Boost)
BP1808_EN _DS_Rev.1.1
www.bpsemi.com
BPS Confidential – Customer Use Only
1
1 page  
BP1808
晶丰明源半导体 Boost, Buck and Buck-Boost DC/DC LED Driver
Internal Block Diagram
CS -
VOUT
+
LDO
VDD
1.2V -
OVP +
+
-
Oscillator
Thermal
Regulation
Control Logic
Dimming
COMP
SW
GND
DIM
Figure 3. BP1808 Internal Block Diagram
BP1808_EN _DS_Rev.1.1
www.bpsemi.com
BPS Confidential – Customer Use Only
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet BP1808.PDF ] | |
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