LB1987 データシートの表示（PDF） - SANYO -> Panasonic
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LB1987 Datasheet PDF : 17 Pages
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LB1987, 1987D, 1987M, 1987H
Continued from preceding page.
Parameter
Symbol
Conditions
[Saturation Prevention]
Saturation prevention circuit
lower side voltage setting
[Schmitt Amplifier]
Vosat(DET)
IO = 10 mA, Rf = 0.5 Ω,
VCTL = LVIM = 5 V, The voltage between each OUT and Rf.
Duty ratio
DUTY Under the specified conditions
Upper side output saturation voltage Vsatu(SH)
Lower side output saturation voltage Vsatd(SH)
Hysteresis
Vhys
Thermal shutdown operating
temperature
T-TSD *
Note: * Items marked with an asterisk are design target values and are not measured.
Ratings
min
typ
0.175
0.25
47
50
4.8
32
50
170
Unit
max
0.325
V
53
%
V
0.2
V
60 mV
°C
Note: 1. The torque ripple correction ratio is determined from the Rf voltage waveform as shown below.
Vp
Vb
1
2
3
4
5
6
2 · (Vp – Vb)
Correction ratio = ——————— 100 · (%)
Vp + Vb
Hall Logic Settings
GND level
Truth Table and Control Functions
Source → sink
V→W
1
W →V
U→W
2
W→U
U→V
3
V→U
W →V
4
V→W
W→U
5
U→W
V→U
6
U→V
Hall input
FR
U
V
W
H
H
H
L
L
H
H
L
L
L
H
H
L
H
L
H
L
L
H
L
H
L
H
H
L
H
L
H
L
L
A12204
Note: 1. The “H” state for FR means a voltage of 2.75 V or higher, and the “L”
state means a voltage of 2.25 V or lower. (When VCC = 5 V.)
2. For the Hall inputs, the input “H” state means the state in which the
(+) input for that phase is at least 0.01 V higher than the (–) input for
that phase. Similarly, the “L” state means the state in which the (+)
input for that phase is at least 0.01 V lower than the (–) input for that
phase.
3. Since this drive technique is a 180° power application technique, the
phase that is neither the source phase nor the sink phase does not
turn completely off.
No. 6109-3/17
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