Toshiba Starts Mass Production of System Power Supply ICs for Medium-Sized LCD Modules for Car Navigation Systems

TOKYO — (BUSINESS WIRE) — June 4, 2015Toshiba Corporation's (TOKYO: 6502) Semiconductor & Storage Products Company today announced the start of mass production of “TC7735FTG”, a system power supply IC with 5 different voltage power outputs, for the medium-sized LCD modules typically used in car navigation systems.

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Toshiba: System power supply IC "TC7735FTG" for medium-sized LCD used in car navigation systems (Pho ...

Toshiba: System power supply IC "TC7735FTG" for medium-sized LCD used in car navigation systems (Photo: Business Wire)

The IC integrates an automatic buck-boost DC-DC converter, which provides stable power supply to LCD panels with a wide operating voltage range, from 4.5 to 16V. This feature supports power supply directly connected from car batteries and suits car navigation systems.

The IC integrates an OTP memory[1], allowing it to store different power control set-up data adjusted for each LCD module, removing the need for adjustment of the system by external control.

Key Features

  • 5 built-in power outputs.
  • Wide operating voltage range, from 4.5 to 16V.
  • Selectable switching frequency: built-in oscillator (1MHz) or external clock input (400kHz-1.2MHz)
  • Automatic buck-boost converter that identifies input voltage and selects operation mode (buck or boost), eliminating control by external command.
  • Built-in OTP for adjustable power control of each LCD
  • Safety functions: input under-voltage detection; Input over-voltage detection; thermal shutdown; and output over-voltage detection

Application examples

LCD modules for car navigation systems and digital photo frames


Main Specifications

Part Number   TC7735FTG
Operating Temperature   Topr -40 to 85 degree C
Operating Voltage Vin 4.5 to 16V
Setting Built-in OTP write Output voltage

Power sequence

Output Voltage Range CH1:Automatic Buck-Boost DC-DC converter 5V to 15V
CH2: Buck DC-DC converter 3V to 5V
CH3: Positive charge pump 14V to 22V
CH4: Negative charge pump -5V to -15V
Operational amplifier for VCOM 0.5 to 7.5V (Vout1-0.6V max)
* Vout1 is output voltage of CH1
Package   QFN32pin(5mm x 5mm)

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