UCC44273中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? 5-pin DBV (SOT-23) package option

? Industry standard pinout

? 4-A peak source and sink symmetrical drive

? Ability to handle negative voltages (–5 V) at inputs

? Fast propagation delays (13 ns typical)

? Fast rise and fall times (9 ns and 7 ns typical)

? 4.5-V to 18-V single supply range

? Outputs held low during VDD UVLO (ensures

glitch-free operation at power up and power down)

? TTL and CMOS compatible input-logic threshold

(independent of supply voltage)

? Hysteretic-logic thresholds for high-noise immunity

? Output held low when input pin is floating

? Input pin absolute maximum voltage levels not

restricted by VDD pin bias supply voltage

? Operating temperature range of –40°C to 140°C

2 Applications

? Power factor correction (PFC) stages

? Residential air conditioning (HVAC)

? Switch-mode power supplies

? Motor drives

3 Description

The UCC44273 single-channel, high-speed, low-side

gate driver device is capable of effectively driving

MOSFET and IGBT power switches. Using a design

that inherently minimizes shoot-through current, the

UCC44273 is capable of sourcing and sinking high

peak-current pulses into capacitive loads offering

rail-to-rail drive capability and extremely small

propagation delay typically 13 ns.

The UCC44273 device is capable of handling –5 V at

the input pins. The UCC44273 provides 4-A source

and 4-A sink (symmetrical drive) peak-drive current

capability at VDD = 12 V.

The UCC44273 is designed to operate over a wide

VDD range of 4.5 V to 18 V and wide temperature

range of –40°C to 140°C. Internal Undervoltage

Lockout (UVLO) circuitry on VDD pin holds output low

outside VDD operating range.

The input pin threshold of the UCC44273 device is

based on TTL and CMOS compatible low-voltage

logic which is fixed and independent of the VDD

supply voltage. Wide hysteresis between the high and

low thresholds offers excellent noise immunity.