LB1945D 데이터 시트보기 (PDF) - ON Semiconductor
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LB1945D Datasheet PDF : 9 Pages
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Pin Assignment
LB1945D
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
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