UNITRODE UC1706, UC2706, UC3706 Technical data

UC2706

UC1706

UC2706

UC3706

Dual Output Driver

FEATURES

•Dual, 1.5A Totem Pole Outputs

•40nsec Rise and Fall into 1000pF

•Parallel or Push-Pull Operation

•Single-Ended to Push-Pull Conversion

•High-Speed, Power MOSFET Compatible

•Low Cross-Conduction Current Spike

•Analog, Latched Shutdown

•Internal Deadband Inhibit Circuit

•Low Quiescent Current

•5 to 40V Operation

•Thermal Shutdown Protection

•16-Pin Dual-In-Line Package

•20-Pin Surface Mount Package

BLOCK DIAGRAM

DESCRIPTION

The UC1706 family of output drivers are made with a high-speed Schottky process to interface between low-level control functions and high-power switching devices - particularly power MOSFET's. These devices implement three generalized functions as outlined below.

First: They accept a single-ended, low-current digital input of either polarity and process it to activate a pair of high-current, totem pole outputs which can source or sink up to 1.5A each.

Second: They provide an optional single-ended to push-pull conversion through the use of an internal flip-flop driven by double-pulse- suppression logic. With the flip-flop disabled, the outputs work in parallel for 3.0A capability.

Third: Protection functions are also included for pulse-by-pulse current limiting, automatic deadband control, and thermal shutdown.

These devices are available in a two-watt plastic “bat-wing” DIP for operation over a 0°C to 70°C temperature range and, with reduced power, in a hermetically sealed cerdip for -55°C to +125°C operation. Also available in surface mount Q and L packages.

TRUTH TABLE

INV

N.I

OUT

OUT = INV and N.I.

H

H

L

OUT = INV or N.I.

L

H

H

H

L

L

L

L

L

10/98

UC1706

UC2706

UC3706

ABSOLUTE MAXIMUM RATINGS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N--Pkg . . . . . . . . . . . . J--Pkg Supply Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . 40V . . . . . . . . . . . . . . . . . . 40V Collector Supply Voltage, VC . . . . . . . . . . . . . . . . . . 40V . . . . . . . . . . . . . . . . . . 40V Output Current (Each Output, Source or Sink)

Steady--State . . . . . . . . . . . . . . . . . . . . . . . . . . ±500mA . . . . . . . . . . . . . . ±500mA Peak Transient. . . . . . . . . . . . . . . . . . . . . . . . . . ±1.5A . . . . . . . . . . . . . . . . ±1.0A Capacitive Discharge Energy . . . . . . . . . . . . . . 20mJ. . . . . . . . . . . . . . . . . 15mJ

Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V . . . . . . . . . . . . . . . . . 5.5V Analog Stop Inputs . . . . . . . . . . . . . . . . . . . . . . . . . VIN. . . . . . . . . . . . . . . . . . VIN Power Dissipation at TA = 25°C (See Note) . . . . . . . 2W . . . . . . . . . . . . . . . . . . 1W Power Dissipation at T (Leads/Case) = 25°C . . . . . . 5W . . . . . . . . . . . . . . . . . . . 2

(See Note)

Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . --55°C to +125°C Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . --65°C to +150°C Lead Temperature (Soldering, 10 Seconds) . . . . . . . . . . . . . . . . 300°C

Note: All voltages are with respect to the four ground pins which must be connected together. All currents are positive into, negative out of the specified trerminal. Consult Packaging sections of the Databook for thermal limitations and considerations of package.

CONNECTION DIAGRAMS

DIL-16, SOIC-16 (TOP VIEW)

J or N Package, DW Package

Note: All four ground pins must be connected to a common ground.

PLCC-20, LCC-20 (TOP VIEW)

Q, L Packages

ELECTRICAL CHARACTERISTICS: Unless otherwise stated, these specifications apply for TA = –55°C to +125°C for the UC1706, –25°C to +85°C for the UC2706 and 0°C to +70°C for the UC3706; V IN = VC = 20V. TA = TJ.

PARAMETERS	TEST CONDITIONS	MIN	TYP	MAX	UNITS
VIN Supply Current	VIN = 40V		8	10	mA
VC Supply Current	VC = 40V, Outputs Low		4	5	mA
VC Leakage Current	VIN = 0, VC = 30V, No Load		.05	0.1	mA
Digital Input Low Level				0.8	V
Digital Input High Level		2.2			V
Input Current	VI = 0		–0.6	–1.0	mA
Input Leakage	VI = 5V		.05	0.1	mA

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