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PDF BP2812 Data sheet ( Hoja de datos )
| Número de pieza | BP2812 | |
| Descripción | Constant Current Controller | |
| Fabricantes | BPS | |
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晶丰明源半导体
BP2812
Constant Current Controller For
Non-isolated Buck LED Driver
Description
The BP2812 is a high precision constant current
controller, designed for non-isolated buck LED
driver. It can operate under universal AC input or
12V~600V DC input. The BP2812 integrates 600V
power MOSFET, so it can achieve excellent constant
current performance with very few external
components
The BP2812 uses high precision current sense circuit
and patent method for constant current control, to
achieve high precision output current and excellent
line regulation. The BP2812 operates in inductor
current critical mode. The LED current is constant
over wide range of inductance variation and the LED
output voltage, so the load regulation is excellent.
The BP2812 uses patent source driver architecture.
The operation current is 200uA only, so the auxiliary
winding is not needed. It can simplify the system
design and reduce the system cost.
The BP2812 offers rich protection functions,
including LED short circuit protection, current sense
resistor short circuit protection and over temperature
protection.
Features
Inductor Current Critical Mode, No Need to
Compensate the Inductance Variation
600V MOSFET integrated
Source Driver Structure, Not Need the
Auxiliary Winding for VCC
±3% LED Current Accuracy
Up to 93% System Efficiency
LED Short Circuit Protection
Current Sense Resistor Short Circuit Protection
Over Temperature Protection
Available in SOP-8 package
Applications
LED Bulb
LED Candle light
LED Spot light
Decorative LED lighting
Typical Application Circuit
AC
BP2812
VCC
DRAIN
LN DRAIN
SOURCE
CS
GND
CS
BP2812_DS_Rev.1.0
Figure 1. Typical Application Circuit
www.bpsemi.com
BPS Confidential – Customer Use Only
1
1 page  
晶丰明源半导体
BP2812
Constant Current Controller For
Non-isolated Buck LED Driver
Symbol
TOFF_MAX
TON_MAX
Parameter
Maximum
Demagnetization Time
Maximum Turn On
Time
Conditions
Min Typ Max Units
130 us
45 us
Note 4 : production testing of the chip is performed at 25°C.
Note 5: the maximum and minimum parameters specified are guaranteed by test, the typical value are guaranteed by design, characterization and statistical
analysis
Typical Parameter Characteristics
Startup Current vs. Temperature
Startup Voltage vs. Temperature
UVLO Threshold vs. Temperature
VCC Clamping Voltage vs. Temperature
BP2812_DS_Rev.1.0
www.bpsemi.com
BPS Confidential – Customer Use Only
5
5 Page 
晶丰明源半导体
Physical Dimensions
BP2812
Constant Current Controller For
Non-isolated Buck LED Driver
BP2812_DS_Rev.1.0
www.bpsemi.com
BPS Confidential – Customer Use Only
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet BP2812.PDF ] | |
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