PBL3770A 데이터 시트보기 (PDF) - Ericsson
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PBL3770A Datasheet PDF : 8 Pages
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PBL 3770A
MB 1
T2
VMM 3
GDN 4
GDN 5
GDN 6
GDN 7
VCC 8
I1 9
Phase 10
PBL
3770A
20 E
19 MA
18 VMM
17 GDN
16 GDN
15 GDN
14 GDN
13 VR
12 C
11 I0
MB 1
T2
VMM 3
GND 4
GND 5
VCC 6
I1 7
Phase 8
PBL
3770A
16 E
15 MA
14 VMM
13 GND
12 GND
11 VR
10 C
9 I0
N/C 5
MA 6
N/C 7
E8
GND 9
MB 10
T 11
PBL
3770A
25 N/C
24 VR
23 C
22 N/C
21 I 0
20 Phase
19 I1
Figure 3. Pin configurations.
Pin Description
SO
DIP
PLCC
1
1
10
2
2
11
3
4-7,
14-18
3,14
4,5,
12,13
12,4
1-3,9,
13-17,28
8
6
18
9
7
19
10
8
20
11
9
21
12
10
23
13
11
24
19
15
6
20
16
8
Symbol Description
M
Motor output B, Motor current flows from M to M when Phase is high.
B
A
B
T
Clock oscillator. Timing pin connect a 56 kΩ resistor and a 820 pF in
parallel between T and Ground.
VMM Motor supply voltage, 10 to 40 V. Pin 3(12) and pin 14(4) should be wired together.
GND Ground and negative supply. Note these pins are used for heatsinking.
Make sure that all ground pins are soldered onto a suitable large copper
ground plane for efficient heat sinking.
VCC Logic voltage supply normally +5 V.
I1
Logic input. It controls, together with the I0 input, the current level in the output stage.
The controlable levels are fixed to 100, 60, 20, 0%.
Phase
I0
Controls the direction of the motor current of MA and MB outputs.
Motor current flows from MA to MB when the phase input is high.
Logic input. It controls, together with the I1 input, the current level in the output stage.
The controlable levels are fixed to 100, 60, 20, 0%.
C
Comparator input. This input senses the instaneous voltage across the sensing
resistor, filtered through a RC Network.
V
Reference voltage. Controls the threshold voltage of the comparator and hence
R
the output current. Input resistance: typically 6.8 kΩ ± 20%.
MA
Motor output A, Motor current flows from MA to MB when Phase is high.
E
Common emitter. Connect the Sence resistor between this pin and ground.
4
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