CMD5901 Datasheet, PDF (10/14 Pages) Ceramate Technical – 4-Channel Motor Driver IC

CMD5901
4-Channel Motor Driver IC
Application Information
1. Mute Function
• When The BRAKE Pin is low is normal opration (high is CH1 mute on).
• When The Mute2 Pin is low is normal opration (high is CH2 mute on).
• When The Mute34 Pin is high is normal opration (low is CH3,4 mute on).
2. Vref Drop Mute (Figure 1)
• When the Voltage of the mute pin is above 1V, the mute circuit is stopped and the output circuit is.
VCC
VCC
VREF
CH Bias Block
Hysteresis
2
CH Bias Block
Q1 ¹
Figure 1. VREF Drop MUTE Circuit
Figure 2. TSD Circuit
3. Thermal Shutdown(Figure 2)
• If the chip temperature rises above 150°C, then the thermal shutdown (TSD) circuit is activated and the output circuit will
be mute.
4. H-bridge Driver (4-Channels)
Driver input resistance is 10kΩ of CH1, CH3, CH4 and input resistance of CH2 is 7.5kΩ.
Driver gain can obtain under -mentioned
CH1, 3, 4:
CH2
GV = 20log _------⁵_---⁵_----^K_--------
11K + R
GV = 20log _-----¹_---¹_----⁰_---^K_-------
7.5K + R
R is External resistance.
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
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Rev 1.0 Dec.12, 2002