Datasheet

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ABSOLUTE MAXIMUM RATINGS
(1)
ELECTRICAL CHARACTERISTICS
UC1708
UC2708
UC3708
SLUS171C – MARCH 1997 – REVISED SEPTEMBER 2007
VALUE UNIT
Supply Voltage, V
IN
35 V
Steady-State 0.5 A
Output Current (Each Output, Source or Sink)
Peak Transient 3 A
Ouput Voltage – 0.3 to (V
IN
+ 0.3) V
Enable and Shutdown Inputs – 0.3 to 6.2 V
A and B Inputs – 0.3 to (V
IN
+ 0.3) V
Operating Junction Temperature
(2)
150 ° C
Storage Temperature Range – 65 to 150 ° C
Lead Temperature (Soldering, 10 Seconds) 300 ° C
(1) All voltages are with respect to Logic Gnd pin. All currents are positive into, negative out of, device terminals.r
(2) Consult Unitrode Integrated Circuits databook for information regarding thermal specifications and limitations of packages.
Unless otherwise stated, V
IN
=10V to 35V, and these specifications apply for: – 55 ° C<T
A
<125 ° C for the UC1708,
– 25 ° C<T
A
<85 ° C for the UC2708, and 0 ° C<T
A
<70 ° C for the UC3708, T
A
= T
J
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Outputs low 18 26
V
IN
Supply current Outputs high 14 18 mA
Enable = 0 V 1 4
A, B and shutdown inputs low level 0.8 V
A, B and shutdown inputs high level 2.0 V
A, B Input current low V
A,B
= 0.4V – 1 – 0.6 mA
A, B Input current high V
A,B
= 2.4V – 200 50 A
A, B Input leakage current high V
A,B
= 35.3V 200 A
Shutdown input current low V
SHUTDOWN
= 0.4V 20 100 A
V
SHUTDOWN
= 2.4V 170 500 A
Shutdown input current high
V
SHUTDOWN
= 6.2V 0.6 1.5 mA
Enable input current low V
ENABLE
= 0V – 600 – 460 200 A
Enable input current high V
ENABLE
= 6.2V 200 A
Enable threshold rising 2.8 3.6 V
Enable threshold falling 1.0 2.4 3.4 V
V
IN
– I
OUT
= – 50mA 2.0 V
Output High Saturation
V
OUT
I
OUT
= – 500mA 2.5 V
I
OUT
= 50mA 0.5 V
V
OUT
Output Low Saturation
I
OUT
= 500mA 2.5 V
Thermal Shutdown 155 ° C
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Product Folder Link(s): UC1708 UC2708 UC3708