LTC4440IMS8E Просмотр технического описания (PDF) - Linear Technology

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производитель

LTC4440IMS8E

High Speed, High Voltage High Side Gate Driver

Linear Technology 

TYPICAL PERFOR A CE CHARACTERISTICS

LTC4440

Input Threshold Hysteresis

vs Temperature

500

480

460

440

420

400

VIH-VIL (VCC = 12V)

380

VIH-VIL (VCC = 15V)

360

340 VIH-VIL (VCC = 8V)

320

300

–60 –30 0

30 60 90 120

TEMPERATURE (°C)

4440 G13

Output Driver Pull-Down

Resistance vs Temperature

3.0

2.5

BOOST – TS = 12V

2.0

BOOST – TS = 8V

1.5

BOOST – TS = 15V

1.0

0.5

0

–60 –30

0 30 60 90 120

TEMPERATURE (°C)

4440 G15

Peak Driver (TG) Pull-Up Current

vs Temperature

3.0

2.9

2.8

BOOST – TS = 15V

2.7

2.6

2.5

2.4

BOOST – TS = 12V

2.3

2.2

2.1

2.0

–60 –30

0 30 60 90 120

TEMPERATURE (°C)

4440 G14

Propagation Delay vs Temperature

(VCC = BOOST = 12V)

45

40

35

tPLH

30

tPHL

25

20

15

10

5

0

–60 –30

0 30 60 90 120

TEMPERATURE (°C)

4440 G16

PI FU CTIO S

SOT-23 Package

VCC (Pin 1): Chip Supply. This pin powers the internal low

side circuitry. A low ESR ceramic bypass capacitor should

be tied between this pin and the GND pin (Pin 2).

GND (Pin 2): Chip Ground.

INP (Pin 3): Input Signal. TTL/CMOS compatible input

referenced to GND (Pin 2).

TS (Pin 4): Top (High Side) Source Connection.

TG (Pin 5): High Current Gate Driver Output (Top Gate).

This pin swings between TS and BOOST.

BOOST (Pin 6): High Side Bootstrapped Supply. An exter-

nal capacitor should be tied between this pin and TS

(Pin 4). Normally, a bootstrap diode is connected between

VCC (Pin 1) and this pin. Voltage swing at this pin is from

VCC – VD to VIN + VCC – VD, where VD is the forward voltage

drop of the bootstrap diode.

4440f

5

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