AMIS-30622 Datasheet, PDF (4/35 Pages) AMI SEMICONDUCTOR – I2C Microstepping Motordriver

AMIS-30622 I²C Microstepping Motordriver
3.0 Pin-out
Data Sheet
SOIC-20
Pin Name
SDA
SCK
VDD
GND
TST1
TST2
HW
CPN
CPP
VCP
VBB
MOTYN
MOTYP
MOTXN
MOTXP
SWI
Pin Description
Serial I/O
Clock for SDA
Internal supply (needs external decoupling capacitor)
Ground, heat sink
Test pin (to be tied to ground in normal operation)
Test pin (to be left open in normal operation)
Hardwired address bit
Negative connection of pump-capacitor (charge pump)
Positive connection of pump-capacitor (charge pump)
Charge-pump filter-capacitor
Battery voltage supply
Negative end of phase Y coil
Positive end of phase Y coil
Negative end of phase X coil
Positive end of phase X coil
Switch input
4.0 Package Thermal Resistance
4.1. SO20
The junction-case thermal resistance is 28°C/W, leading to a
junction-ambient thermal resistance of 63°C/W, with the
PCB ground plane layout condition given on the figure
beside, and with:
• PCB thickness = 1.6mm
• 1 layer
• Copper thickness = 35µm
SOIC-20
1
2
3
4,7,14,17
5
6
8
9
10
11
12, 19
13
15
16
18
20
AMI Semiconductor - Rev. 2.3
www.amis.com
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