TC1044SCPA Charge Pump Switching Regulator IC: Pinout, Equivalent, TC1044SCPA VS LM2574N-ADJG

The TC1044SCPA is a pin-compatible upgrade to the Industry standard TC7660 charge pump voltage converter. It converts a +1.5V to +12V input to a corresponding –1.5V to –12V output using only two low-cost capacitors, eliminating inductors and their associated cost, size, and EMI. Added features include an extended supply range to 12V, and a frequency boost pin for higher operating frequency, allowing the use of smaller external capacitors.

The onboard oscillator operates at a nominal frequency of 10kHz. Frequency is increased to 45kHz when pin 1 is connected to V+. Operation below 10kHz (for lower supply current applications) is possible by connecting an external capacitor from OSC to the ground (with pin 1 open). 

The TC1044SCPA is available in both 8-pin DIP and 8-pin small outline (SOIC) packages in commercial and extended temperature ranges.

• Converts +5V Logic Supply to ±5V System

• Wide Input Voltage Range .................... 1.5V to 12V

• Efficient Voltage Conversion ......................... 99.9%

• Excellent Power Efficiency ............................... 98%

• Low Power Consumption ............ 80µA @ VIN = 5V

• Low Cost and Easy to Use

      — Only Two External Capacitors Required

• RS-232 Negative Power Supply

• Available in 8-Pin Small-Outline (SOIC) and 8-Pin

• Plastic DIP Packages

• Improved ESD Protection ..................... Up to 10kV

• No External Diode Required for High Voltage

• Operation

• Frequency Boost Raises FOSC to 45kHz

Microchip Technology TC1044SCPA technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology TC1044SCPA.

TC1044SCPA Symbol

TC1044SCPA Footprint

TC1044SCPA 3D Model

• Do not exceed maximum supply voltages.

• Do not connect the LV terminal to GND for supply voltages greater than 3.5V.

• Do not short circuit the output to V+ supply for voltages above 5.5V for extended periods; however, transient conditions including start-up are okay.

• When using polarized capacitors in the inverting mode, the + terminal of C1 must be connected to pin 2 of the TC1044S and the + terminal of C2 must be connected to GND.

TC1044SCPA and LM2574N-ADJG have different Manufacturers. LM2574N-ADJG’s operating temperature is higher than TC1044SCPA operating from -40°C~125°C TJ. LM2574N-ADJG’s output voltage and max output voltage are 37V and 37V respectively, and TC1044SCPA’s output voltage and max output voltage are-12V and -1.5V respectively.

• LM2574N-ADJG

• LMC7660IN/NOPB

• MC33063AVPG

• SC34063AP1G

Microchip Technology Inc. is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost, and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.