BP1601 Datasheet – Step-Up Constant Current LED Driver
BP1601 overview
The BP1601 is a Step-Up Constant Current LED Driver made by BPS Confidential, supplied in an SOP 8 Pin Type package. The absolute maximum ratings table on this page lists the 10 limits from the manufacturer's datasheet that must not be exceeded. This page brings together the BP1601 pinout and maximum ratings, with the full datasheet PDF to preview below or download.
BP1601 is a step-up DC/DC converter designed to drive high brightness LED from 4.5V to 24VDC input voltage . Typically in 12VDC input voltage, up to seven 1W LED strings is able to be drived.
BP1601 works in current mode to control LED current, it set the LED current by sense resistor, this low-side sensing strategy is used to minimize the power dissipation and improve system efficiency.
BP1601 detects the OV pin voltage to provide open circuit protection.
The BP1601 includes under-voltage lockout, current limiting and thermal overload protection preventing damage in the event of an output overload. BP1601 is assembled in SOP-8PP package, which provides excellent heat dissipation and thermal performance.
Datasheet
BP1601 features
- 4.5V~24V input voltage range
- Up to seven 1W LED strings is drived when VIN=12V
- Higher than 90% efficiency
- Less than 1uA MOSFET leakage current
- 200mV current sense voltage
- 1A current limit
- Soft start
- Input under-voltage lockout
- Output over-voltage protection
- Internal over-temperature protection
- PWM and analog Dimming
BP1601 pinout
| Pin | Name | Description |
|---|---|---|
| 1 | GNDP | Power ground |
| 2 | VIN | Power supply of the chip, connect a bypass capacitor to ground as close as possible |
| 3 | OV | Output voltage detect. Protect the chip and system while LED is open. |
| 4 | EN | PWM and analog dimming input. While connecting to logic” high” , chip is enabled; While connecting to logic” low” more than 3ms,chip is disabled; Be logic low while left floating. The PWM dimming signal frequency should be higher than 20KHz. |
| 5 | GNDA | Signal ground |
| 6 | FB | Output current Feedback. Set the LED current by detecting the voltage in the sense resistor. The voltage threshold is 200mV |
| 7 | NC | Not connect |
| 8 | SW | Drain of internal MOSFET |
Absolute maximum ratings
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Drain of internal MOSFET | SW | -0.3~36 | V |
| Output current Feedback | FB | -0.3~6 | V |
| Chip Enable voltage, dimming input voltage | EN | -0.3~6 | V |
| Output voltage detect | OV | -0.3~36 | V |
| Power supply voltage | VIN | -0.3~25 | V |
| Power dissipation (note2) | PDMAX | 0.3 | W |
| Thermal resistance, SOP8-PP（θJA） | PTR | 110 | °C /W |
| Operating temperature | TJ | -40 to 150 | °C |
| Storage temperature | TSTG | -55 to 150 | °C |
| ESD Susceptibility (note3) | -- | 2 | kV |
BP1601 applications
- Solar LED lighting
- Portable LED lighting
- LCD LED backlight
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