BP2836D Datasheet – Non-isolated Buck Offline LED Driver

Part Number: BP2836D

Function: Non-isolated Buck Offline LED Driver

Package: DIP 8 Pin Type

Manufacturer: BPS Confidential ( www.bpsemi.com )

Image:

BP2836D image

Description

The BP2836D is a high precision buck constant current LED driver. The device operates in critical conduction mode and is suitable for 85Vac~265Vac universal input offline LED lighting. The BP2836D integrates a 500V power MOSFET. With patent pending MOSFET driving technique, the operating current of the IC is very low . So it doesn’t need the auxiliary winding for supplying the chip. It can achieve excellent constant current performance with very few external components, so the system cost and size are minimized.

The BP2836D utilizes patent pending current control method. It can achieve precise output current and excellent line regulation. The driver operates in critical conduction mode, the output current does not change with the inductance and LED output voltage.

Pinout

BP2836D datasheet pinout

Features

1. Critical Conduction Mode Operation
2. Internal 500V Power MOSFET
3. No Auxiliary Winding
4. Ultra Low Operating Current
5.  ±5% LED Output Current Accuracy

Applications

1. LED Tube
2. LED Ceiling Light
3. LED Bulb
4. Other LED Lighting

BP2836D Datasheet PDF

BP2836D pdf


 

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RT9214 Datasheet – Synchronous Buck PWM DC-DC Controller

Part Number: RT9214

Function : 5V/12V Synchronous Buck PWM DC-DC Controller

Manufacturer: Richtek Technology

Image:  RT9214 Image

General  Descript ion

The RT9214 is a high efficiency synchronous buck PWM controllers that generate logic-supply voltages in PC based systems. These high performance , single output devices include internal soft -start, frequency compensation networks and integrates al   of  the control ,  output adjustment, monitoring and protection functions into a single package.
The device operating at fixed 300kHz frequency provides an optimum compromise between efficiency, external component size, and cost. Adjustable over-current protect ion (OCP) monitors the voltage drop across theRDS(ON) of  the lower MOSFET for synchronous buck PWM DC/DC controller.  The over current  function cycles the soft-start in 4-times hiccup mode to provide fault protection, and in an always hiccup mode for under-voltage protection.

Pinout:

RT9214 Pinout

Official Homepage: http://www.richtek.com/en/Products/Switching%20Regulators/Single-Phase%20Step-Down%20Controller/RT9214

Features

1. Operating with 5V or 12V Supply Voltage
2. Drives All Low Cost N-MOSFETs
3. Voltage Mode PWM Control
4. 300kHz Fixed Frequency Oscillator
5. Fast Transient Response:
– High-Speed GM Amplifier
– Full 0 to 100% Duty Ratio
6. Internal Soft-Start
7. Adaptive Non-Overlapping Gate Driver
8. Over Current Fault Monitor on MOSFET, No Current Sense Resistor Required
9. RoHS Compliant and 100% Lead (Pb)-Free

RT9214 Circuit

RT9214 Datasheet

RT9214 Datasheet


 

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