TC4404_16 Datasheet, PDF (1/22 Pages) Microchip Technology – 1.5A Dual Open-Drain MOSFET Drivers

TC4404/TC4405
1.5A Dual Open-Drain MOSFET Drivers
Features
General Description
• Independently Programmable Rise and Fall Times
• Low Output Impedance: 7 Typical
• High Speed t_R, t_F: <30 ns with 1000 pF Load
• Short Delay Times: <30 ns
• Wide Operating Range: 4.5V to 18V
• Latch-Up Protected: withstands > 500 mA
Reverse Current (Either Polarity)
• Input Withstands Negative Swings up to -5V
Applications
• Motor Controls
• Driving Bipolar Transistors
• Driver for Non-Overlapping Totem Poles
• Reach-Up/Reach-Down Driver
TABLE 1: DEVICE SELECTION TABLE
Part Number
Package
Temp. Range
TC4404COA
TC4404CPA
TC4404EOA
TC4404EPA
TC4405COA
TC4405CPA
TC4405EOA
TC4405EPA
8-Lead SOIC
8-Lead PDIP
8-Lead SOIC
8-Lead PDIP
8-Lead SOIC
8-Lead PDIP
8-Lead SOIC
8-Lead PDIP
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
The TC4404/TC4405 are CMOS buffer-drivers
constructed with complementary MOS outputs, where
the drains of the totem-pole output have been left
separated so that individual connections can be made
to the pull-up and pull-down sections of the output. This
allows the insertion of drain-current-limiting resistors in
the pull-up and/or pull-down sections, allowing the user
to define the rates of rise and fall for a capacitive load.
It also enables a reduced output swing, if driving a
resistive load, or limiting base current when driving a
bipolar transistor. Minimum rise and fall times, with no
resistors, will be less than 30 ns for a 1000 pF load.
For driving MOSFETs in motor-control applications,
where slow-ON/fast-OFF operation is desired, these
devices are superior to the previously used technique
of adding a diode-resistor combination between the
driver output and the MOSFET, because they allow
accurate control of turn-on, while maintaining fast
turn-off and maximum noise immunity for an OFF
device.
When used to drive bipolar transistors, these drivers
maintain the high speeds common to other Microchip
drivers. They allow insertion of a base current-limiting
resistor, while providing a separate half-output for fast
turn-off. By proper positioning of the resistor, either
NPN or PNP transistors can be driven.
For driving many loads in low-power regimes, these
drivers require significantly less power at higher
frequencies and can be helpful in meeting low-power
budgets as they eliminate shoot-through currents in the
output stage.
Package Type
8-Lead PDIP/SOIC
V_DD 1
IN A 2
IN B 3
GND 4
TC4404
8 A TOP
7 A BOTTOM
6 B TOP
5 B BOTTOM
V_DD 1
IN A 2
IN B 3
GND 4
TC4405
8 A TOP
7 A BOTTOM
6 B TOP
5 B BOTTOM
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DS20001418E-page 1