MIC2981 8-Channel Source Driver Array
MIC2981 8-Channel Source Driver Array
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8-Channel logic compatible Darlington driver for high current / voltage loads.
DESCRIPTION
The MIC2981/82 is an 8-Channel Darlington Driver is a logic compatible source driver for driving high current / high voltage loads.
PACKAGE INCLUDES:
- MIC2981/82 8-Channel Source Driver
KEY FEATURES OF MIC2981/82 8-CHANNEL SOURCE DRIVER:
- 8 Darlington transistor pair channels
- 50V @ 500mA output source current
- Sits on the high-side of the load
- Built-in clamp diodes for driving inductive loads
- 5V compatible inputs
The MIC2981 has 8 separate drive channels each comprised of high current NPN Darlington transistor pairs with emitter outputs and with built-in kick-back diodes for switching inductive loads like motors.
It is a replacement for both the UDN2981 and UDN2982 which is why you will sometimes see it written as MIC2981/82 or MIC2981/2982. These chips are similar to the ULN2803A that are very commonly used, except that those parts sink current while the MIC2981 sources current.
The MIC2981 is well suited for driving higher powered 7-Segment displays, stepper motors, solenoids, relays, fans, small DC motors and many other moderate power devices.
The driver is used on the high side of the load which means it is connected between the power supply and the load and sources current to the load.
A single channel can handle up to 50V@ 500mA. The maximum per channel overall will depend on how many channels are being used and the duty cycle that the channel is switching at. 
The channels can be connected in parallel for higher current capability.
The parts are in a DIP-18 package so they are breadboard friendly.
Notes:
TECHNICAL SPECIFICATIONS
| Maximum Ratings | Output Voltage | 50V |
| Supply Voltage | 50V | |
| Collector Current (continuous) | 500mA | |
| Base Current | 2mA | |
| Turn on/off Delay | 5uS (typ.) | |
| Package | DIP-18 | |
| Package Type | Plastic, thru-hole | |
| Mfr | Microchip | |
| Datasheet | MIC2981/82 |
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