Industrial parts supplier - LED driver chip - SS8102

Product Introduction

The SS8102 is a high-efficiency, constant-current, step-down synchronous half-bridge DC/DC converter driver chip with a maximum output current capability of 25A and PWM dimming resolution exceeding 100K:1.

The SS8102 operates in a hysteretic constant off-time mode, requiring no external compensation design. It greatly simplifies external components. Its output current capability can be adjusted either by an external resistor (Rcs) of different values or by adjusting the voltage on the analog dimming control pin IADJ. The current capability can reach 25A. PWM signals input through the DIM pin enable flexible LED dimming control.

The SS8102 offers two operating modes: synchronous and asynchronous, allowing customers to design flexibly according to their needs.
The SS8102 features good linearity and stable constant current characteristics, enabling precise dimming and stable operation under harsh power supply conditions.

System operation optimization for low-gray dimming characteristics eliminates flicker and shimmer issues at low gray levels, providing better LED dimming linearity.

Dual control of PWM and linear dimming enables independent dimming current control.

The SS8102 provides a series of protection features, including undervoltage lockout (UVLO), over-temperature protection (OTP), LED open and short circuit protection, and output undervoltage protection. The SS8102 uses a package with a heat sink, allowing stable operation under high current.

I. LED driver chip -Features of SS8102:

Maximum output 25A drive current

PWM dimming resolution above 100K:1

Analog dimming ratio 250:1

Input voltage range: 8V~45V

Adjustable switching frequency

Package: eTSSOP16

Good dimming linearity

Stable constant current characteristics

Protection features

- VCC undervoltage lockout

- Overcurrent protection