The Toshiba TB62706BN and TB62706BF are monolithic Bi-CMOS integrated circuits specifically designed as constant current drivers for LEDs and LED displays. The devices incorporate a 16-bit shift register, latches, AND-gates, and output stages capable of driving currents between 5mA and 90mA via an external resistor.
The ICs are available in two packages: the TB62706BN in an SDIP24 package with a 1.78mm pitch and the TB62706BF in an SSOP24 package with a 1.00mm pitch. Key features include a maximum clock frequency of 15MHz, compatibility with 5V CMOS inputs, and voltage matching for output current across different units.
| Constant Current Output Range | 5 to 90mA |
|---|---|
| Maximum Clock Frequency | 15 MHz |
| Supply Voltage | 0~7.0 V |
| Operating Temperature Range | -40 to +85 °C |
| Output Current (TB62706BN) | 1.22g (Typ.) |
The maximum clock frequency is 15 MHz when operating with cascade connection at a top temperature of 25°C.
The output current can be configured by setting up an external resistor connected to the R-EXT terminal.
The TB62706BN uses an SDIP24 package with a 1.78mm pitch, while the TB62706BF uses an SSOP24 package with a 1.00mm pitch.