Weltrend | Products

Motor drivers

WT7026

The WT7026 provides 2 Constant-Current Drive H-bridge channels and 4 Constant-Voltage Drive 5+1 H-bridge channels.WT7026 can be operated in serial control mode or partial exterior control mode.Stepping motors can be used for auto focus, and DC motors can be used for zoom and iris by Constant-Voltage Drive channel, while iris and shutter operation by Constant-Current Drive channel, This provides a 4 bits D/A converter for each channel.

Features

- Built in 2 constant-current control drive accuracy ±5% (at DAC CC Mode : 200mV).
- Built in 4 constant-voltage control drive accuracy ±5% (at DAC CV Mode : 4.0V).
- Built in 2ch PI-driver circuit.(Typ. Von=0.45V,Iout=30mA ).
- Built in thermal shutdown circuit.(shut : 150。C/return : 120。C/Hysterisis : 30。C).
- 4 bit D/A converters for Constant-Voltage control.
- 4 bit D/A converters for Constant-Current control.
- Serial interface 3-line bus control input.
- PWM control input.
- Standby current consumption :Typ. 0μA.
- QFN 28 pin (4×4mm).

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