1. General description

The NEX80806 is an intelligent multi-mode PWM

controller implemented with peak current mode control.

As the load changes, it automatically switches mode

between Continuous Conduction Mode (CCM), Quasi-

Resonant (QR) mode, Discontinuous Conduction Mode

(DCM) and Pulse Frequency Modulation (PFM) mode

to maintain a high efficiency across the entire load

range. To achieve an ultralow standby power, Burst

Mode (BM) is implemented in very light load or no-load

condition.

A peak load mode is implemented to support a peak

output current requirement in a short period, which is

normally required in power supply of PC, printer, etc.

The NEX80806 offers comprehensive protection

including output OV/UV, VCC OV/UV, OCP, line voltage

BROWN-IN/OUT, secondary SR short, CS open/short,

internal/external OTP, etc.

Furthermore, the spread spectrum and smart driving

function can minimize the noise and improve EMI

performance.

The NEX80806 comes in a cost-effective TSOT23-6

package.

2. Features and benefits

• Multimode support CCM/QR/DCM/PFM

• Peak load mode

• Valley switching operation in QR/DCM/PFM

• Burst mode with ultra-low operation current in light

load and no load conditions

• 65kHz maximum frequency

• Internal Soft Start (SST)

• Output over voltage protection (OVP)

• Spread spectrum for better EMI

• Internal over temperature protection (OTP)

• External OTP by NTC resistor

• VCC over/under voltage protection (VCC OV/UV)

• Line voltage brown in /brown out (BNI/BNO)

• Output Short Circuit Protection (SCP)

• CS open/short protection

• Secondary Rectifier Short Protection (SRSP)

• Overload Protection (OLP)

• Over Current Protection (OCP) to meet LPS

• TSOT23-6 Package

3. Applications

• AC/DC adapters for portable devices

• Auxiliary power for industrial and home equipment

• Battery chargers for e-tools and e-bikes