LB1947 データシートの表示（PDF） - SANYO -> Panasonic
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LB1947 Datasheet PDF : 9 Pages
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Block Diagram
MD 12
IN1 8
IN2 9
ST 5
VI 4
LB1947
Control
logic
circuit
OUTA OUTA
3
1
VBB
6
7 VCC
VREF 10
GND 13
Current
select
circuit
One-shot
multi-
blanking
time
Thermal
shutdown circuit
UVLO
11
2
CR
E
Truth Table
IN1
IN2
ST
VI
MD
OUTA
OUTA
Operating mode
H
L
H
H
L
H
L
Forward, 2/5 times, FAST
H
L
H
H
M
H
L
Forward, 2/5 times, MIX
H
L
H
H
H
H
L
Forward, 2/5 times, SLOW
H
L
H
L
L
H
L
Forward, 1/5 times, FAST
H
L
H
L
M
H
L
Forward, 1/5 times, MIX
H
L
H
L
H
H
L
Forward, 1/5 times, SLOW
H
H
H
H
L
L
H
Reverse, 2/5 times, FAST
H
H
H
H
M
L
H
Reverse, 2/5 times, MIX
H
H
H
H
H
L
H
Reverse, 2/5 times, SLOW
H
H
H
L
L
L
H
Reverse, 1/5 times, FAST
H
H
H
L
M
L
H
Reverse, 1/5 times, MIX
H
H
H
L
H
L
H
Reverse, 1/5 times, SLOW
L
H
H
H
L
L
L
Brake, 2/5 times, FAST
L
H
H
H
M
L
L
Brake, 2/5 times, MIX
L
H
H
L
L
L
L
Brake, 1/5 times, FAST
L
H
H
L
M
L
L
Brake, 1/5 times, MIX
L
H
H
X
H
L
L
Brake, no current limiting
L
L
H
X
X
OFF
OFF
Output OFF
X
X
L or OPEN
X
X
OFF
OFF
Standby mode (circuit OFF)
Except for MD pin, Low at input OPEN.
MD M: determined by external voltage.
No.6192-4/9
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