BA6970FS Просмотр технического описания (PDF) - ROHM Semiconductor

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BA6970FS

2-phase motor driver for VCR cylinder motors

ROHM Semiconductor 

Motor driver ICs

BA6970FS

(3) ECI input

The ECI input circuit has 2VF and a 500Ω resistor con-

nected in series. Current is limited only by the 500Ω re-

sistor.

(4) Amplifiers 1 and 2

An input range of 0.6V to (VCC*1.2V) is recommended.

Unpredictable outputs may occur when the input is out-

side this range.

(5) Hysteresis amplifier

An input range of 0.6V to (VCC*1.2V) is recommended.

Unpredictable outputs may occur when the input is out-

side this range.

FApplication example

(6) Thermal shutdown circuit

The thermal shutdown circuit puts the driver outputs (8,

6, 5, 3 pin) to the open state at the temperature of 175_C

(typical). The circuit is deactivated when the temperature

drops to about 155_C.

(7) Signal ground pin

Pins 1 and 24 are signal ground pins. Be noted that un-

predictable outputs may occur if your application causes

a large current between pins 1 and 24 via the bonding

wire IC chip.

Fig.12

601

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