1. General description

The NEX806 device series (NEX806xx) are

high frequency quasi-resonant PWM controllers

implemented with peak current mode control. As

the load changes, the NEX806 device automatically

switches mode between 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.

The wide 10 V to 83 V VCC range makes NEX806xx

devices suitable for wide output voltage range

applications, such as USB PD/PPS which require an

output range between 3.3 V to 21 V .

The NEX806xx offers comprehensive protection

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

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

open/short, internal/external OTP, etc.

Furthermore, spread spectrum and smart driving

functions can minimize noise and improve EMI

performance.

The NEX806xx device series comes in a cost-effective

TSOT23-6 package.

2. Features and benefits

• Wide VCC range (10 V-83 V) supports PD/PPS

• Direct GaN driver

• Valley switching operation in QR/DCM/PFM

• Burst Mode with ultra-low operation current in light

load and no load

• 130 kHz or 170 kHz maximum frequency options

• 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)

• Overpower Protection (OPP) to meet LPS

• TSOT23-6 package

3. Applications

• USB PD/QC chargers

• AC/DC adapters for portable devices

• Auxiliary power for industrial and home equipment