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參數(shù)資料
| 型號(hào)： | LA6557H |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
| 封裝： | 0.375 INCH, HEAT SINK, SOP-28 |
| 文件頁(yè)數(shù)： | 5/6頁(yè) |
| 文件大?。?/td> | 129K |
| 代理商： | LA6557H |
LA6557H
No.6350-5/6
Continued from preceding page.
Pin No.
Pin name
Function
Equivalent circuit
27
FWD
Channel 5 (VLO) output switching (FWD), logic input to the
loading block
28
REV
Channel 5 (VLO) output switching (REV), logic input to the
loading block
27
(28)
Notes: The center frame (FR) functions as the power system ground. It must be, along with S-GND, at the lowest potential in the system.
The power supply pins, VCC-S, VCC1, and VCC2 must be shorted together externally to the IC.
System Diagram (Relationship between MUTE and the power supplies (VCC*))
CH1
MUTE
CH2
CH3
CH4
VCC1
VCC2
H bridge
Note: * VCC1 and VCC2 must be connected externally.
H Bridge Block
FWD
REV
VO5+
VO5
Mode
L
OFF
Open *1
L
H
L
Forward
H
L
H
Reverse
H
L
Brake *2
Notes: 1. The outputs are in the high-impedance state in this mode.
2. During braking, the sink side transistor will be turned on (short braking).
VLO+ and VLO will be close to the ground level.
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