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TC18C46

Features: · Isolated Output Drive·Low Power CMOS Construction· Low Supply Current ................................. 2mA Typ.· Wide Supply Voltage Operation .............. 8V to 18V· Latch-Up Immunity ................... 500mA on Outputs· Above and Below Rail Input Protection .............6V· High ...

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TC18C46: Features: · Isolated Output Drive·Low Power CMOS Construction· Low Supply Current ................................. 2mA Typ.· Wide Supply Voltage Operation .............. 8V to 18V· Latch-Up Immunit...

TC18C46 Data Sheet

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Part Number:
TC18C46
Supply Ability:
5000

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  • 1~5000
  • Unit Price
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  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/4

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Product Details

Description



Features:

· Isolated Output Drive
·Low Power CMOS Construction
· Low Supply Current ................................. 2mA Typ.
· Wide Supply Voltage Operation .............. 8V to 18V
· Latch-Up Immunity ................... 500mA on Outputs
· Above and Below Rail Input Protection .............6V
· High Output Drive ................................ 500mA Peak
· Current Mode Control
· Fast Rise/Fall Time ..................... 50nsec @ 1000pF
· High Frequency Operation ..........................500kHz
·UV Hysteresis Guaranteed
· Programmable Current Limit
·Shutdown Pin Available
·Double Ended
· Soft Start
· Low Prop Delay Current Amp
    to Output ......................................... < 350nsec Typ.
· Low Prop Delay Shutdown
    to Output ......................................... < 400nsec Typ.
· TC38C46Pin Compatible with Unitrode UC3846
· ESD Protected ................................................. ±2 kV


Specifications

Output Current, Source or Sink (Pins 1, 14) ...........500mA
Analog Inputs (Pins 3, 4, 5, 6, 16) ........... 0.3V to +VIN
Reference Output Current (Pin 2) ....................... 30 mA
Sync Output Current (Pin 10) ................................ 5mA
Error Amplifier Output Current (Pin 7) ................... 5mA
Soft Start Sink Current (Pin 1) ................................50mA
Oscillator Charging Current (Pin 9) ...........................5mA
Supply Voltage ..........................................................18V
Maximum Chip Temperature................................... 150
Storage Temperature ......................... 65 to +150
Lead Temperature (Soldering, 10 sec) .................. 300
Package Thermal Resistance
CerDIP RJ-A .................................................... 150 /W
CerDIP RJ-C ...................................................... 55 /W
PDIP RJ-A ........................................................ 125 /W
PDIP RJ-C .......................................................... 45 /W
SOIC RJ-A ........................................................ 250 /W
SOIC RJ-C .......................................................... 75 /W

NOTES:
1.All voltages are with respect to Ground, Pin 12. Currents are positive into, negative out of the specified terminal.
2.Static-sensitive device. Unused devices must be stored in conductive material. Protect devices from static discharge and static fields. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to Absolute Maximum Rating Conditions for extended periods may affect device reliability.




Description

The TC38C46 is a current mode CMOS PWM control IC. It draws only 2 mA supply current, so it can be driven without a costly 50-60 Hz transformer. The output drive stage is capable of high drive currents, 300mA typical.

The TC38C46 is pin compatible with earlier bipolar products so that designers can easily update older designs. A number of improvements have been added.

This second generation part has been designed with an isolated drive stage. Unlike its cousin, the TC170, the output stage of the TC38C46 can be run from a separate power supply such as a secondary winding on an output transformer. This allows for bootstrap start-up of the power




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