参数资料
型号: TC642VUA
元件分类: 运动控制电子
英文描述: BRUSHLESS DC MOTOR CONTROLLER, PDSO8
封装: PLASTIC, MSOP-8
文件页数: 6/28页
文件大小: 485K
代理商: TC642VUA
TC642
DS21444C-page 14
2002 Microchip Technology Inc.
TABLE 5-2:
TRANSISTORS AND MOSFETS FOR Q1 (VDD = 5V)
5.6
Latch-up Considerations
As with any CMOS IC, the potential exists for latch-up
if signals are applied to the device which are outside
the power supply range. This is of particular concern
during power-up if the external circuitry (such as the
sensor network, VMIN divider or shutdown circuit) is
powered by a supply different from that of the TC642.
Care should be taken to ensure that the TC642’s VDD
supply powers up first. If possible, the networks
attached to VIN and VMIN should connect to the VDD
supply at the same physical location as the IC itself.
Even if the IC and any external networks are powered
by the same supply, physical separation of the
connecting points can result in enough parasitic
capacitance and/or inductance in the power supply
connections to delay one power supply “routing” versus
another.
Device
Package
Max. VBE(sat)/VGS
(V)
Min. HFE
VCEO/VDS
(V)
Fan Current
(mA)
Suggested
RBASE ()
MMBT2222A
SOT-23
1.2
50
40
150
800
MPS2222A
TO-92
1.2
50
40
150
800
MPS6602
TO-92
1.2
50
40
500
301
SI2302
SOT-23
2.5
NA
20
500
MGSF1N02E
SOT-23
2.5
NA
20
500
SI4410
SO-8
4.5
NA
30
1000
SI2308
SOT-23
4.5
NA
60
500
Note 1: A series gate resistor may be used in order to control the MOSFET turn-on and turn-off times.
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