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Datasheet LB1945H PDF ( 特性, スペック, ピン接続図 )

部品番号 LB1945H
部品説明 Stepping Motor Driver
メーカ ON Semiconductor
ロゴ ON Semiconductor ロゴ 
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LB1945H Datasheet, LB1945H PDF,ピン配置, 機能
Ordering number : EN6193B
LB1945H
Monolithic Digital IC
PWM Current Control Type
Stepping Motor Driver
http://onsemi.com
Overview
The LB1945H is a PWM current control type stepping motor driver.
Feature
PWM current control (external excitation)
Load current digital selection (1-2, W1-2, and 2 phase excitation drives possible)
Built-in upper/lower diode
Simultaneous ON prevention function (feed-through current prevention)
Built-in thermal shutdown circuit
Built-in noise canceler
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Maximum motor supply voltage
Output peak current
Output continuous current
Logic supply voltage
Logic input voltage range
Emitter output voltage
Allowable power dissipation
VBB max
IO peak
IO max
VCC max
VIN max
VE max
Pd max
tw 20μs
Mounted on a specified board *
Operating temperature
Topr
Storage temperature
Tstg
* Specified board: 114.3mm × 76.1mm × 1.6mm, glass epoxy board.
Ratings
30
1.0
0.8
6.0
-0.3 to VCC
1.0
1.9
-20 to +90
-55 to +150
Unit
V
A
A
V
V
V
W
°C
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Semiconductor Components Industries, LLC, 2013
June, 2013
30409 MS / 82799RM(KI) No.6193-1/7

1 Page



LB1945H pdf, ピン配列
Package Dimensions
unit : mm (typ)
3233B
15.2
(6.2)
28 15
1
0.8
(0.8)
2.0
14
0.3
2.7
LB1945H
0.25
SANYO : HSOP28H(375mil)
2.4
2.0
1.9
1.6
1.2
0.8
0.4
0
-20
Pd max -- Ta
Specified board: 114.3×76.1×1.6mm3
glass epoxy board.
0.91
0 20 40 60 80 90 100
Ambient temperature, Ta -- °C
Pin Assignment
OUTA 1
OUTA 2
NC 3
NC 4
E1 5
D-GND 6
VBB1 7
28 OUTB
27 OUTB
26 NC
25 NC
24 VBB2
23 E2
22 D-GND
LB1945H
VCC 8
PHASE1 9
ENABLE1 10
IA2 11
IA1 12
VREF1 13
GND 14
21 CR
20 PHASE2
19 ENABLE2
18 IB2
17 IB1
16 VREF2
15 S-GND
No.6193-3/7


3Pages


LB1945H 電子部品, 半導体
Application Circuit Example
LB1945H
L
0.51Ω(1W)
24V
47μF
10μF
5V
0.1μF
Voltage from 1.5 to
5V can be applied.
1 OUTA
2 OUTA
3 NC
4 NC
5 E1
6 D-GND
7 VBB1
OUTB 28
OUTB 27
NC 26
NC 25
VBB2 24
E2 23
D-GND 22
LB1945H
8 VCC
9 PHASE1
CR 21
PHASE2 20
10 ENABLE1 ENABLE2 19
11 IA2
12 IA1
13 VREF1
14 GND
IB2 18
IB1 17
VREF2 16
S-GND 15
L
0.51Ω(1W)
82kΩ
820pF
The fin on the bottom of HSOP-28H package and the fins between pins 7 and 8 and 21 and 22 should be grounded.
No.6193-6/7

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