MBI6027 3-Channel Constant CurrentLED Driver IC
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- Model Number: MBI6027
- Type: Drive IC
- Brand Name: MBI
- Place of Origin: Taiwan
- 3-Channel: Constant Current
- RGB: QFN-24
- Application: Computer
- Supply Voltage: 3~5.5V
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MBI6027 3-Channel Constant Current LED Driver IC
MBI6027 is a 3-channel, constant current PWM-embedded LED sink driver with bi-directional transmission. MBI6027 provides constant current range: 5~45mA @VDD=5V; 3~30mA @ VDD= 3.3V for each output channel and three output channels are adjustable with one external resistor. Besides, MBI6027 can support both 3.3V and 5V power systems and sustain 17V at output channels.
With Scrambled-PWM (S-PWM) technology, MBI6027 enhances pulse width modulation by scrambling the “on” time into several “on” periods. Besides, the gray scale clock, GCLK, can be generated by the embedded oscillator. Moreover, MBI6027 provides two selectable gray scale modes: 12-bit gray scale mode and 8-bit gray scale mode. The 12-bit gray scale mode provides 4,096 gray scales for each LED to enrich the color with optional 10-bit dot correction to adjust each LED by 1,024-step dot correction to calibrate the LED brightness. On the other hand, the 8-bit gray scale mode provides 256 gray scales with optional 8-bit dot correction to adjust each LED by 256-step dot correction.
Furthermore, MBI6027 features a two-wire only bi-directional transmission interface to simplify the system controller design. The controller can read back the error status by this bi-directional transmission. MBI6027 supports open detection (1-bit for R/G/B), leakage detection (1-bit for R/G/B), transfer-error and CKI/SDI disconnection detection and an external error report pin. To improve the transmission quality, MBI6027 provides phase-inversed output clock function to enhance long-distance transmission. In addition, MBI6027 preserves selectable polarity reversion to drive high-power drivers or MOSFET as a PWM controller.
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