Product Summary

The MBI5170 is a Constant Current LED Sink Driver. MBI5170 contains an 8-bit Shift Register and an 8-bit Output Latch, which convert serial input data into parallel output format. At MBI5170 output stages, eight regulated current ports are designed to provide uniform and constant current sinks with small skew between ports for driving LED’s with a wide range of forward voltage (Vf) variations. Users may adjust the output current from 5 mA to 120 mA with an external resistor Rext, which gives users flexibility in controlling the light intensity of LED’s. MBI5170 guarantees to endure maximum 17V at the output ports. Besides, the high clock frequency up to 25 MHz also satisfies the system requirements of high volume data transmission.

Parametrics

MBI5170 absolute maximum ratings: (1)Supply Voltage: 0 to 7.0 V; (2)Input Voltage : -0.4 to VDD + 0.4 V; (3)Output Current : +120 mA; (4)Output Voltage : -0.5 to +20 V; (5)Clock Frequency : 25 MHz; (6)GND Terminal Current : 1000 mA; (7)Power Dissipation(On PCB, Ta=25℃): 1.32W; (8)Thermal Resistance (On PCB, Ta=25℃): 94.91℃/W; (9)Operating Temperature : -40 to +85 ℃; (10)Storage Temperature : -55 to +150 ℃.

Features

MBI5170 features: (1)Compatible with MBI5168 in package and electrical characteristics; (2)Exploit Share-I-O. technique to provide two operation modes: Normal Mode with the same functionality as MB5168, Current Adjust Mode to program output current gain; (3)8 constant-current output channels; (4)Output current adjustable through an external resistor; (5)Constant output current range: 5 -120 mA; (6)25MHz clock frequency; (7)Schmitt trigger input; (8)3.3V~ 5V supply voltage; (9)256-step run-time programmable output current gain suitable for white balance application.

Diagrams

MBI5170 block diagram

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