Microchip TC4428 Handleiding

Microchip Niet gecategoriseerd TC4428

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 2005-2013 Microchip Technology Inc. DS21939B-page 1

TC4426AM/TC4427AM/TC4428AM

Features

• High Peak Output Current: 1.5A

• Wide Input Supply Voltage Operating Range:

- 4.5V to 18V

• High Capacitive Load Drive Capability:

- 1000 pF in 25 ns (typ.)

• Short Delay Times: 30 ns (typ.)

• Matched Rise, Fall and Delay Times

• Low Supply Current:

- With Logic ‘1’ Input – 1 mA (typ.)

- With Logic ‘0’ Input – 100 µA (typ.)

• Low Output Impedance: 7(typ.)

• Latch-Up Protected: Will Withstand 0.5A Reverse

Current

• Input: Will Withstand Negative Inputs Up to 5V

• ESD Protected: 4 kV

• Pin-compatible with the

TC426M/TC427M/TC428M and

TC4426M/TC4427M/TC4428M

• Wide Operating Temperature Range:

- -55°C to +125°C

• See TC4426A/TC4427A/TC4428A Data Sheet

(DS21423) for additional temperature range and

packaging offerings

Applications

• Switch-mode Power Supplies

• Line Drivers

• Pulse Transformer Drive

General Description

The TC4426AM/TC4427AM/TC4428AM are improved

versions of the earlier TC4426M/TC4427M/TC4428M

family of MOSFET drivers. In addition to matched rise

and fall times, the TC4426AM/TC4427AM/TC4428AM

devices have matched leading and falling edge

propagation delay times.

These devices are highly latch-up resistant under any

conditions within their power and voltage ratings. They

are not subject to damage when up to 5V of noise

spiking (of either polarity) occurs on the ground pin.

They can accept, without damage or logic upset, up to

500 mA of reverse current (of either polarity) being

forced back into their outputs. All terminals are fully

protected against Electrostatic Discharge (ESD) up to

4 kV.

The TC4426AM/TC4427AM/TC4428AM MOSFET

drivers can easily charge/discharge 1000 pF gate

capacitances in under 30 ns, while providing low

enough impedances in both the on and off states to

ensure the MOSFET's intended state will not be

affected, even by large transients.

Package Types

8-Pin CERDIP

OUT A

OUT B

IN A

GND

IN B

VDD

TC4426AM

TC4427AM

TC4426AM TC4427AM

OUT A

OUT B

VDD

TC4428AM

OUT A

OUT B

VDD

TC4428AM

1.5A Dual High-Speed Power MOSFET Drivers

TC4426AM/TC4427AM/TC4428AM

DS21939B-page 2  2005-2013 Microchip Technology Inc.

Functional Block Diagram

Effective

Input C = 12 pF

(Each Input) TC4426AM/TC4427AM/TC4428AM(1)

Output

Input

GND(2)

VDD

300 mV

4.7V

Inverting

Non-Inverting

Note 1: The TC4426AM has two inverting drivers; the TC4427AM has two non-inverting drivers;

the TC4428AM has one inverting and one non-inverting driver.

2: Ground any unused driver input.

 2005-2013 Microchip Technology Inc. DS21939B-page 3

TC4426AM/TC4427AM/TC4428AM

1.0 ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings†

Supply Voltage ................................................................+22V

Input Voltage, IN A or IN B .......... (VDD + 0.3V) to (GND – 5V)

† Notice: Stresses above those listed under "Absolute

Maximum Ratings" may cause permanent damage to the

device. These are stress ratings only and functional operation

of the device at these or any other conditions above those

indicated in the operation sections of the specifications is not

implied. Exposure to Absolute Maximum Rating conditions for

extended periods may affect device reliability.

TEMPERATURE CHARACTERISTICS

DC CHARACTERISTICS

Electrical Specifications: Unless otherwise noted, over operating temperature range with 4.5V V

DD18V.

Parameters Sym Min Typ Max Units Conditions

Input

Logic ‘1’, High Input Voltage V

IH 2.4 — — V

Logic ‘0’, Low Input Voltage VIL — — 0.8 V

Input Current IIN -1.0

-10

—

+1.0

+10

µA 0VVINVDD

Output

High Output Voltage VOH VDD – 0.025 — — V DC TEST

Low Output Voltage VOL — — 0.025 V DC TEST

Output Resistance RO— 7 9 IOUT = 10 mA, VDD = 18V, TA = +25°C

— 8 12 -55°C  TA  +125°C

Peak Output Current IPK — 1.5 — A VDD = 18V

Latch-Up Protection

Withstand Reverse Current

IREV — >0.5 — A Duty cycle2%, t 300 µs

VDD = 18V

Switching Time (Note 1)

Rise Time tR— 25 35 ns TA = +25°C

— 30 40 -55°C  TA  +125°C, Figure 4-1

Fall Time tF— 25 35 ns TA = +25°C

— 30 40 -55°C  TA  +125°C, Figure 4-1

Delay Time tD1 — 30 35 ns TA = +25°C

— 38 50 -55°C  TA  +125°C, Figure 4-1

Delay Time tD2 — 30 35 ns TA = +25°C

— 38 50 -55°C  TA  +125°C, Figure 4-1

Power Supply

Power Supply Current IS—

—

1.0

0.1

2.0

0.2

mA VIN = 3V (Both inputs)

VIN = 0V (Both inputs), VDD = 18V

Note 1: Switching times ensured by design.

Electrical Specifications: Unless otherwise noted, all parameters apply with 4.5V  V

DD  18V.

Parameters Sym Min Typ Max Units Conditions

Temperature Ranges

Specified Temperature Range (M) TA-55 — +125 ºC

Maximum Junction Temperature TJ— — +150 ºC

Storage Temperature Range TA-65 — +150 ºC

Package Thermal Resistances

Thermal Resistance, 8L-CERDIP JA — 150 — ºC/W

Product specificaties

Merk:	Microchip
Categorie:	Niet gecategoriseerd
Model:	TC4428

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