l Backlit circuit pin definition Description
ENA and STB Enable the ON\/OFF function of the integrated circuit boot terminal
REF, VREF, Vref, REG reference voltage output terminal
SS, SST soft start control external capacitor
RT external oscillator frequency timing resistor
CT, CTOSC external backlight tube working oscillation frequency timing capacitor
RT_CT, RT_CTOSC backlight tube oscillation frequency control element combination The input end is connected with an external timing resistor and capacitor LCT is connected with an external PWM triangle wave oscillation frequency timing capacitor
LRT_LCT, CTPWM external PWM triangle wave oscillation frequency timing resistor and capacitor
LPWM, PWMOUT brightness DC control signal to brightness PWM signal output
The RT1 external connection increases the frequency oscillation timing resistance at the moment of startup
The CT1 external connection increases the frequency oscillation timing capacitor immediately after startup
VCC, VIN, VDD, AVDD, PVDD integrated circuit power supply input
AGND, the PGND integrated circuit grounding terminal
CTIRM, TIRM delay protection delay time setting external delay capacitor
DIM, BRI, BRIT, ADIM (DC), BDIM(PWM), ADJ Brightness control input
SYNC Indicates the frequency synchronization interface between two integrated circuits
OVP, CLAMP over voltage protection sample input
OVT overvoltage adjustment sampling input
VSEN output voltage sampling detects the input
ISEN, FB, INN backlight tube current sampling detection input
The load end of the CMP error amplifier is generally connected with a capacitor or a low-pass filter
VLS UVLO integrated circuit VCC power supply undervoltage protection input
NOUT, NDR N channel MOS tube excitation output
POUT, PDR P channel MOS tube excitation output
OUTL reverse excitation output
OUTH positive phase excitation output
DRV1, DRV2 positive and negative phase excitation output
The RTDLY external reference current control resistor sets the internal reference current and controls the delay of the waveform of the multi-excitation output
SCP short circuit protection
OLP backlight tube break protection
FAIL Indicates the output end of the protected clock signal