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