Driver

BP2832A PDF Datasheet – Buck Offline LED Driver

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Part Number: BP2832A

Function: Non-isolated Buck Offline LED Driver

Package: SOP-8 Pin Type

Manufacturer: BPS ( Bright Power Semiconductor )

Images:BP2832A datasheet

Description

The BP2832A 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 BP2832A 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.

Pinouts:

BP2832A pdf 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

6. LED Open Protection

7. LED Short Protection

8. Current Sensing Resistor Short Protection

Applications:

1. LED Candle Light

2. LED Bulb

3. Other LED Lighting

BP2832A PDF Datasheet

What is ULN2803A? – Darlington Sink Driver – Toshiba

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What is ULN2803A?

This is a high-voltage, high-current Darlington transistor array. It consists of eight NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for inductive load transient suppression. The ULN2803A is commonly used in a range of electronic circuits to interface low-level logic to high-power loads, such as motors, solenoids, and lamps.

Part Number: ULN2803A

Function: 8-Channel Darlington Sink Driver

Package:  AP type : DIP-18pin, AFW type-SOL-18pin

Manufacturer: Toshiba

Image:
ULN2803A datasheet

Description

The ULN2803A / ULN2803AP / ULN2803AFW Series are high−voltage, high−current darlington drivers comprised of eight NPN darlington pairs. All units feature integral clamp diodes for switching inductive loads. Applications include relay, hammer, lamp and display (LED) drivers. High-voltage, high-current darlington drivers comprised of eight NPN darlington pairs.

Advantages Vs Disadvantages

Advantages:

1. High-current capability
2. High-voltage outputs with inductive load transient suppression
3. Compact size with multiple channels in a single package
4. Low saturation voltage, which reduces power consumption
5. High input impedance and low input current make it easy to drive with low-level logic signals

Disadvantages:

1. The Darlington pairs have a high saturation voltage, which can lead to power dissipation and heating of the device

2. The ULN2803A does not provide isolation between the input and output, which can be a concern in some applications

3. The device is not suitable for high-speed switching applications

Features

1. Output current (single output) : 500 mA (Max.)

2. High sustaining voltage output : 50 V (Min.)

3. Output clamp diodes

4. Inputs compatible with various types of logic.

ULN2803A Datasheet PDF Download


ULN2803A pdf

Other data sheets are available within the file:

ULN2803, ULN2803AFW, ULN2803AP, ULN2804