DATA SHEET
Part No.
Package Code No.
AN44161A
HSOP034-P-0300B
Publication date: May 2012
Ver. AEB
1
AN44161A
Contents
Overview …………………………………………………………………………………………………………… 3
Features
…………………………………………………………………………………………………………… 3
Applications ………………………………………………………………………………………………………… 3
Package ……………………………………………………………………………………………………………… 3
Type ………………………………………………………………………………………………………………… 3
Application Circuit Example ……………………………………………………………………………………… 4
Pin Descriptions …………………………………………………………………………………………………… 5
Absolute Maximum Ratings ……………………………………………………………………………………… 6
Operating Supply Voltage Range ………………………………………………………………………………… 6
Allowable Current and Voltage Range …………….……………………………………………………………… 7
Electrical Characteristics …………………………………………………………………………………………… 8
Electrical Characteristics (Reference values for design) ………………………………………….…………… 10
Technical Data ……………………………………………………………………………………………………… 11
Circuit diagrams of the input/output part and pin function descriptions ……………………………………… 11
Control mode ……………………………………………………………………………………………………… 16
P
D
⎯
T
a
diagram
………………………………………………………………………………………………… 23
Usage Notes ………………………………………………………………………………………………………… 24
Ver. AEB
2
AN44161A
AN44161A
Driver IC for Stepping Motor
Overview
AN44161A is a two channels H-bridge driver IC. Bipolar stepping motor can be controlled by a single driver IC.
2-phase, 1-2(type 2) phase, W1-2 phase can be selected.
Features
4-phase input (W 1- and 2-phase excitation enabled; exclusive OR function incorporated for simultaneous-ON prevention)
Built-in decoder for micro steps
Built-in CR chopping (with frequency selected)
Built-in thermal protection and low voltage detection circuit
Built-in 5 V power supply
Applications
IC for stepping motor drives
Package
34 pin Plastic Small Outline Package With Heat Sink (SOP Type)
Type
Bi-CDMOS IC
Ver. AEB
3
AN44161A
Application Circuit Example
BC1 14
BC2 15
0.01
μF
ENABLE 34
IN3 33
IN2 32
CHARGE
PUMP
17 VPUMP
0.01
μF
Gate Circuit
Selector
5 BOUT2
SQ
R
8 RCSB
6 BOUT1
VREF 22
TJMON 1
PWMSW 25
PWMSW
BLANK
3 VM2
23 VCC
0.1
μF
OSC
TSD
UVLO
47
μF
16 VM1
12 AOUT2
Micro
Step
Decoder
10 RCSA
R
S
0.1
μF
STEPSW 18
PHB 29
PHA 28
DIR 19
ST1 20
ST2 21
IN1 31
IN0 30
Selector
Gate Circuit
Q
13 AOUT1
S5VOUT 24
0.1
μF
VREF
VM
27 GND
Ver. AEB
4
AN44161A
Pin Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
Pin name
TJMON
N.C.
VM2
N.C.
BOUT2
BOUT1
N.C.
RCSB
GND
RCSA
N.C.
AOUT2
AOUT1
BC1
BC2
VM1
VPUMP
STEPSW
DIR
ST1
ST2
VREF
VCC
S5VOUT
PWMSW
GND
GND
PHA
PHB
IN0
IN1
IN2
IN3
ENABLE
Type
Output
—
Input
—
Output
Output
—
Input / Output
Ground
Input / Output
—
Output
Output
Output
Output
Input
Output
Input
Input
Input
Input
Input
Input
Output
Input
Ground
Ground
Input
Input
Input
Input
Input
Input
Input
Phase A motor drive output 2
Phase A motor drive output 1
Charge pump capacitor connection 1
Charge pump capacitor connection 2
Motor power supply 1
Charge pump circuit output
1CLK input / parallel
input
Rotation direction
Step select 1
Step select 2
Torque reference voltage input
Signal power supply
Internal reference voltage (5 V output)
PWM frequency selection input
Die pad ground
Signal ground
Phase A phase selection input / 1CLK input
Phase B phase selection input
Phase A output torque control 1
Phase A output torque control 2
Phase B output torque control 1
Phase B output torque control 2
Enable / disable CTL
Phase B current detection
Die pad ground
Phase A current detection
—
Phase B motor drive output 2
Phase B motor drive output 1
—
Motor power supply 2
—
VBE monitor
—
Description
Ver. AEB
5