The OB39R32T1 is an 8-bit Flash MCU from On-Bright with built-in capacitive touch sensing, using a 1T (single-clock-cycle) 8051-compatible core and offering 6~8 touch channels depending on package. With a wide 2.2~5.5V supply and good noise immunity, it is widely used for touch panels and keys in appliances and consumer products.
| Type | 8-bit Touch-Key MCU |
| Core | 1T 8051-compatible |
| Touch Channels | 6 ~ 8 (by package) |
| Clock | 22 MHz internal RC |
| Supply Voltage | 2.2V ~ 5.5V |
| Package | SOP / SSOP / LQFP (20~32 pin) |
On-Bright
China
Power Management & LED Lighting Driver ICs
View all On-Bright products → Official On-Bright siteThe OB2263 is a current-mode PWM controller for offline flyback power supplies, ideal for chargers and adapters under 30W. The switching frequency is set by an external resistor, with comprehensive protections, EMI frequency-shuffling, and low standby power.
The OB3350 is a current-mode boost LED backlight driver providing stable constant-current drive for LCD monitor and TV backlighting. Fixed-frequency control with external PWM dimming and multiple built-in protections.
The OB2632Q is a quasi-resonant (QR) multi-mode PWM controller designed for USB-PD fast-charge adapters, with a wide supply range covering the PD output voltage sweep. It automatically switches QR / PFM / CCM modes by load for efficiency and low EMI.
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