A8904SLB Allegro Microsystems Inc, A8904SLB Datasheet - Page 8

• Manufacturer Part Number: A8904SLB
• Description: IC CTRLR/DRIVER DC MOTOR 24SOIC
• Manufacturer: Allegro Microsystems Inc

Specifications of A8904SLB

• Applications: DC Motor Driver, Brushless (BLDC), 3 Phase
• Number Of Outputs: 1
• Current - Output: ±1.4A
• Voltage - Load: 4 V ~ 14 V
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

A8904
A. Minimum CHIP SELECT setup time before CLOCK rising edge ........... 100 ns
B. Minimum CHIP SELECT hold time after CLOCK rising edge ................ 150 ns
C. Minimum DATA setup time before CLOCK rising edge .......................... 150 ns
D. Minimum DATA hold time after CLOCK rising edge ............................... 150 ns
E. Minimum CLOCK low time before CHIP SELECT ................................... 50 ns
F. Maximum CLOCK frequency ................................................................ 3.3 MHz
G. Minimum CHIP SELECT high time ........................................................ 500 ns
Note: the A8904 can be directly used in an existing A8902–A application, as the fi ve most
signifi cant bits are reset to zero, which is the default condition for A8902–A operation. The
only consideration when using the A8904 in an A8902-A application, is to ensure the mini-
mum CHIP SELECT high time is at least 500 ns.
3-Phase Brushless DC Motor Controller/Driver
Serial Port Timing Conditions
with Back EMF Sensing
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
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