ka2821d Fairchild Semiconductor, ka2821d Datasheet
ka2821d
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ka2821d Summary of contents
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... H-bridge driver Typical Application • Floppy disk drive (FDD) • General stepping motor ©2000 Fairchild Semiconductor International www.fairchildsemi.com Description The KA2821D is a monolithic integrated circuit, and suit- able as a two-phase stepping motor driver of a 3.5-inch FDD system. 20-SOP-300 Ordering Information Device Package ...
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... B-channel inverting output - Power ground - Power ground O A-channel inverting output O A-channel output - A-channel seeking supply voltage - No connection AOUT 17 AOUT 16 PGND 15 PGND 14 BOUT 13 BOUT Channel - KA2821D ...
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... KA2821D Internal Block Diagram DIRA 8 DIRB 9 CE TTL Interface TSD TTL Interface AOUT 17 AOUT 16 PGND BOUT 13 BOUT 15 PGND ...
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... Seeking supply voltage Symbol SA OSPEAK OPR T STG 1.33 1.0 0 100 Ambient temperature Symbol SA Value Unit 7 330 mA 500 mA 1 125 C 125 150 175 Min. Typ. Max 4.5 5.0 5.5 4.5 - 13.8 KA2821D Unit V V ...
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... KA2821D Electrical Characteristics (Ta= =5V, V =12V, V =12V, unless specified otherwise Parameter Digital input “L” voltage Digital high level input voltage Digital low input current Digital high input current Supply current Output sustain voltage V output saturation voltage SA, B Output clamp voltage ...
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... YOUT: AOUT or BOUT (Inverting output) Y: Indicate each channel (A and B) X: High impedance 2. MAXIMUM CURRENT DRIVE CAPACITY • Peak seeking output current: 0.5A • Continuous seeking output current: 0.33A • Holding output current: 0.2A Output YOUT YOUT KA2821D Operating Mode Seeking Mode Open Mode ...
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... KA2821D Timing Chart CE DIRA BOUT A, BOUT Typical Application Circuits V (5V) CC A-CH in B-CH in Chip enable in T PLH 50% T PHL DIRA 4 SGND 5 PGND KA2821D 6 PGND 7 SGND 8 DIRB PHL T PLH AOUT Load A 17 AOUT 16 PGND 15 ...
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... KA2821D DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...