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LB1945D の電気的特性と機能

LB1945DのメーカーはSanyo Semicon Deviceです、この部品の機能は「Stepping Motor Driver」です。


製品の詳細 ( Datasheet PDF )

部品番号 LB1945D
部品説明 Stepping Motor Driver
メーカ Sanyo Semicon Device
ロゴ Sanyo Semicon Device ロゴ 




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LB1945D Datasheet, LB1945D PDF,ピン配置, 機能
Ordering number : EN7633A
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LB1945D
Monolithic Digital IC
PWM Current Control
Stepping Motor Driver
Overview
The LB1945D is a PWM current control stepping motor driver that uses a bipolar drive technique. It is optimal for use with
the carriage and paper feed stepping motors used in printers.
Functions and Features
PWM current control (external clock)
Digital load current selection function (supports 1-2, W1-2, and 2-phase excitation)
Built-in high and low side diodes
Simultaneous on state prevention function (through-current prevention)
Built-in thermal shutdown circuit
Noise canceling function
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Motor supply voltage
Output peak current
Output continuous current
Logic system supply voltage
Logic input voltage range
Emitter output voltage range
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VBB max
IO peak
IO max
VCC max
VIN
VE
Pd max
Topr
Tstg
tW 20μs
Independent IC
Conditions
Ratings
30
1.0
0.8
6.0
-0.3 to VCC
1.0
2.8
-20 to +90
-55 to +150
Unit
V
A
A
V
V
V
W
°C
°C
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
41107 TI PC B8-6489, 6394 No.7633-1/9

1 Page





LB1945D pdf, ピン配列
Pin Assignment
LB1945D
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28 27 26 25 24 23 22 21 20 19 18 17 16 15
LB1945D
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Top view
ILB01555
Pin Functions
Pin No.
Pin
22 VBB1
5 VBB2
24 E1
6 E2
27 OUTA
28 OUTA
2 OUTB
1 OUTB
15 GND
14 S-GND
4, 25
SUBGND
23 D-GND
7
8 CR
16 VREF1
13 VREF2
20 PHASE1
9 PHASE2
19 ENABLE1
10 ENABLE2
17, 18
12, 11
21
IA1, IA2
IB1, IB2
VCC
Description
Output stage power supply voltage
High side diode cathode connection
The set current is controlled by inserting resistors RE between these pins and ground.
Output pins
Ground
Sense ground
IC sub-ground
Low side built-in diode ground (anode side)
Chopping is performed at the period of a triangle wave set by the RC circuit connected to this pin.
The triangle wave off time is the noise cancellation time.
Output current settings.
(The output current is determined by providing an input in the range 1.5V to 5V.)
Output phase switching inputs
High-level input: OUTA = high, OUTA = low
Low-level input: OUTA = low, OUTA = high
Output on/off control inputs
High-level input: Output off
Low-level input: Output on
Output current setting digital inputs.
The output current is set to 1/3, 2/3 or 1 by input high/low levels to these pins.
Logic block power supply voltage
No.7633-3/9


3Pages


LB1945D 電子部品, 半導体
Truth Table
ENABLE
Low
Low
High
PHASE
High
Low
-
OUTA
High
Low
OFF
LB1945D
OUTA
Low
High
OFF
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I1
Low
High
Low
High
I2
Low
Low
High
High
Output current
Vref/(10 × RE) = IOUT
Vref/(15 × RE) = IOUT × 2/3
Vref/(30 × RE) = IOUT × 1/3
0
Note: The output is turned off when ENABLE is high or in the I1 = I2 = high state.
Clockwise/counterclockwise Operating Sequence
2-phase excitation drive
Clockwise rotation
No.
0
1
2
3
PHASE1
0
1
1
0
OUTA
0
1
1
0
OUTA
1
0
0
1
PHASE2
0
0
1
1
Counterclockwise rotation
No. PHASE1
00
11
21
30
OUTA
0
1
1
0
OUTA
1
0
0
1
PHASE2
1
1
0
0
IA1 = IA2 = IB1 = IB2 = 0
OUTB
OUTB
01
01
10
10
IA1 = IA2 = IB1 = IB2 = 0
OUTB
OUTB
10
10
01
01
Control Sequence
2-phase excitation
Phase A
NO
PH1
IA2
IA1
0000
1100
2100
3000
1-2 phase excitation - 1/2 step
Phase A
No.
PH1
IA2
IA1
0000
1001
2 * 11
3101
4100
5101
6 * 11
7001
Table 1
Current value
1
1
1
1
PH2
0
0
1
1
Table 2
Current value
1
2/3
0
2/3
1
2/3
0
2/3
PH2
*
0
0
0
*
1
1
1
ENABLE1 = ENABLE2 = 0
Phase B
IB2 IB1 Current value
00
1
00
1
00
1
00
1
ENABLE1 = ENABLE2 = 0
Phase B
IB2 IB1
Current value
11
0
01
2/3
00
1
01
2/3
11
0
01
2/3
00
1
01
2/3
No.7633-6/9

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
LB1945D

Stepping Motor Driver

Sanyo Semicon Device
Sanyo Semicon Device
LB1945H

PWM Current Control Type Stepping Motor Driver

Sanyo
Sanyo
LB1945H

Stepping Motor Driver

ON Semiconductor
ON Semiconductor


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