AMIS-30621 Datasheet, PDF (4/43 Pages) AMI SEMICONDUCTOR – LIN Microstepping Motordriver

AMIS-30621 LIN Microstepping Motordriver
3.0 Pin-out
Data Sheet
SOIC-20
Pin Name
HW0
HW1
VDD
GND
TST
LIN
HW2
CPN
CPP
VCP
VBB
MOTYN
MOTYP
MOTXN
MOTXP
SWI
Pin Description
Bit 0 of LIN-ADD
to be tied to GND
Bit 1 of LIN-ADD
or VDD if not used
Internal supply (needs external decoupling capacitor) 3
Ground, heat sink
Test pin (to be tied to ground in normal operation) 5
LIN-bus connection
Bit 2 of LIN-ADD
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
SOIC-20
1
2
4,7,14,17
6
8
9
10
11
12, 19
13
15
16
18
20
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
2 x (10mm x 23mm)
AMI Semiconductor - Rev. 1.4
www.amis.com
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