UC3725 Datasheet PDF - Unitrode
Part Number | UC3725 | |
Description | Isolated High Side FET Driver | |
Manufacturers | Unitrode | |
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UC1725
UC2725
UC3725
FEATURES
• Receives Both Power and Signal Across
the Isolation Boundary
• 9 to 15 Volt High Level Gate Drive
• Under-voltage Lockout
• Programmable Over-current Shutdown
and Restart
• Output Enable Function
DESCRIPTION
The UC1725 and its companion chip, the UC1724, provide all the nec-
essary features to drive an isolated MOSFET transistor from a TTL in-
put signal. A unique modulation scheme is used to transmit both power
and signals across an isolation boundary with a minimum of external
components.
Protection circuitry, including under-voltage lockout, over-current shut-
down, and gate voltage clamping provide fault protection for the MOS-
FET. High level gate drive is guaranteed to be greater than 9 volts and
less than 15 volts under all conditions.
Uses include isolated off-line full bridge and half bridge drives for driv-
ing motors, switches, and any other load requiring full electrical isola-
tion.
The UC1725 is characterized for operation over the full military tem-
perature range of -55°C to +125°C while the UC2725 and UC3725 are
characterized for -25°C to +85°C and 0°C to +70°C respectively.
BLOCK DIAGRAM
1/94
UDG-92051-1
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IMPORTANT NOTICE
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pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO
BE FULLY AT THE CUSTOMER’S RISK.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright © 1999, Texas Instruments Incorporated
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for UC3725 electronic component. |
Information | Total 5 Pages | |
Link URL | [ Copy URL to Clipboard ] | |
Download | [ UC3725.PDF Datasheet ] |
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