UNITRODE UC1711, UC3711 Technical data

UNITRODE UC1711, UC3711 Technical data

UC1711

UC1711

UC3711

Dual Ultra High-Speed FET Driver

FEATURES

25ns Rise and Fall into 1000pF

15ns Propagation Delay

1.5A Source or Sink Output Drive

Operation with 5V to 35V Supply

High-Speed Schottky NPN Process

8-PIN MINIDIP Package

CONNECTION DIAGRAM

DIL-8 (Top View)

J or N Package

BLOCK DIAGRAM

7.5V REG

6 VCC

 

 

3k

 

 

2.5k

 

 

AIN

2

7

A Out

 

2.5k

3k

 

BIN

4

 

 

 

 

5

B Out

 

 

3

Gnd

 

 

 

 

 

 

UDG-99078

DESCRIPTION

The UC1711 family of FET drivers are made with an all-NPN Schottky process in order to optimize switching speed, temperature stability, and radiation resistance. The cost for these benefits is a quiescent supply current which varies with both output state and supply voltage. For lower power requirements, refer to the the UC1709 family which is both pin compatible with, and functionally equivalent to the UC1711.

These devices implement inverting logic with TTL compatible inputs, and output stages which will either source, or sink in excess of 1.5A of load current with minimal cross-conduction charge. Due to their monolithic construction, the channels are well matched and can be paralleled for doubled output current capability.

ORDERING INFORMATION

 

TEMPERATURE RANGE

PACKAGE

UC1711J

–55°C to +125°C

Ceramic DIP

UC3711J

0°C to +70°C

Ceramic DIP

UC3711N

0°C to +70°C

Plastic DIP

ABSOLUTE MAXIMUM RATINGS

Input Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . 40V Output Current (Source or Sink)

Steady State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 500mA Peak Transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 1.5A Maximum Forced Voltage . . . . . . . . . . . . . . . . . . . . -0.3V to 7V Maximum Forced Current . . . . . . . . . . . . . . . . . . . . . . . ± 10mA Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W Operating Junction Temperature . . . . . . . . . . –55°C to +150°C Storage Temperature . . . . . . . . . . . . . . . . . . . –65°C to +150°C

Note 1: Unless otherwise indicated, voltages are reference to ground and currents are positive into, negative out of, the specified terminals. All reliability information for this device has been gathered at an ambient air temperature of 125°C, and a supply voltage of 25V.

Note 2: Consult Unitrode databook for information regarding thermal specifications and limitations of packages.

03/99

UC1711

UC3711

ELECTRICAL CHARACTERISTICS: Unless otherwise stated, VCC = 15V. TA =TJ.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Input Supply

 

 

 

 

 

Supply Current (Note 3)

Both inputs = 0V; VCC = 15V

 

11

15

mA

 

Both inputs = 5V; VCC= 15V

 

20

27

mA

 

Both inputs = 0V; VCC= 35V

 

15

20

mA

 

Both inputs = 5V; VCC= 35V

 

41

56

mA

Logic Inputs

 

 

 

 

 

Logic 0 Input Voltage

 

 

 

0.8

V

Logic 1 Input Voltage

 

2.2

 

 

V

Input Current

VIN = 0V

-5.0

-2.7

 

mA

 

VIN = 5V

 

0.5

2.0

mA

Output Stages

 

 

 

 

 

Output High Level

ISOURCE = 20mA, below VCC

 

1.5

2.0

V

 

ISOURCE = 200mA, below VCC

 

2.0

3.0

V

Output Low Level

ISINK = 20mA

 

.25

0.4

V

 

ISINK = 200mA

 

0.4

1.0

V

Switching Characteristics (Note 4)

 

 

 

 

 

Rise Time Delay, TPLH

CLOAD = 0

 

10

40

ns

 

CLOAD = 1000pF, (Note 5)

 

15

50

ns

 

CLOAD= 2200pF

 

20

55

ns

Fall Time Delay, TPHL

CLOAD = 0

 

3

20

ns

 

CLOAD = 1000pf, (Note 5)

 

5

20

ns

 

CLOAD = 2200pF

 

5

20

ns

Rise Time, TLH

CLOAD = 0, (Note 5)

 

12

25

ns

 

CLOAD = 1000pF, (Note 5)

 

25

40

ns

 

CLOAD = 2200pF

 

40

55

ns

Fall Time, THL

CLOAD = 0, (Note 5)

 

7

15

ns

 

CLOAD = 1000pF, (Note 5)

 

25

40

ns

 

CLOAD= 2200pF

 

40

55

ns

Total Supply Current

Freq = 200kHz, 50% Duty-cycle

 

 

 

 

 

Both Channels Switching

 

 

 

 

 

CLOAD = 0

 

17

23

mA

 

CLOAD = 2200pF

 

29

35

mA

Note 3: Supply currents at other input supply votages can be calculated by extrapolating the 15V and 35V supply currents. The impedance of the chip at the VCC pin is linear for supply voltages from 8V to 35V, the approximate value of this impedance is 4.3k for both inputs low, 0.94k for both inputs high, and 1.54k for one input high and one low.

Note 4: Switching test conditions are, VCC = 15V, Input voltage waveform levels are 0V and 5V, with transition times of <3ns. The

timing terms are defined as : TPHL Propagation delay 50% VIN to 90% VOUT; TPLH Propogation delay 50% VIN to 10% VOUT; THL 90% VOUT to 10% VOUT; TLH 10% VOUT to 90% VOUT.

Note 5: This specification not tested in production.Unless otherwise stated specifications hold for TA = 0 to 70°C for the UC3711, and TA = -55 to 125°C for the UC1711, V CC = 15V. TA = TJ.

UNITRODE CORPORATION

7 CONTINENTAL BLVD. • MERRIMACK, NH 03054 TEL. (603) 424-2410 FAX (603) 424-3460

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