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Power Regulator IC

Related Information

The TB9021FNG device is a low-standby current, low-power, high-temperature and mission-critical 5V/200mA linear regulator supporting automotive grade 5-volt microcontrollers. The deployment of the TB9021FNG, with automotive grade 5-volt microcontrollers, provides automobile makers with reliability, power, and cost benefits in the design of entertainment, information, safety, and driver assistance systems for the next generation of automobiles.

  • Reduces standby power consumption in car electronic systems by managing power usage during normal operation as well as as preserving battery life even when a vehicle has not been operated for an extended period of time.
  • Fabricated using Toshiba's low-power consumption, fine-pitch BiCD process that reduces standby current to 25 percent from the previous Toshiba products1, down to 30uA (typ.)
  • Contributes to a reduction of external components by integrating an output power MOSFET required by high-performance automotive electronic subsystems.
  • Offers key protections of reverse battery connection, over-temperature detection, and an over-current limiter to prevent output shorted to ground or a "current hogging" situation.
  • Watchdog function ensures MCU power is reset under abnormal clock signals
  • The device is housed in a design friendly and efficient 5.0mm x 4.4mm (0.65mm pitch) HTSSOP16 package.

1Comparison with the Toshiba TB9000AFG.

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Power Regulator IC
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Part Number / Datasheet
Output Voltage
Output Current Capability
Voltage Difference Between IN and OUT
Stand-by Current
Detection Circuits
Undervoltage Detection
Power-on Reset
Watchdog Timer
Watchdog Hold Control
Operating Temperature Range
Package
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TB9021FNG 5.0V±0.1V 200mA : Current limiter = 300mA (typ) 0.25V (max) @ ILORD=200mA 30µA (typ) - Over temperature detection of IC
- Over current limiter
- Durable against the reverse connection of Vcc and GND
Selectable of 4.2V (typ) or 4.7V (typ Holding time adjustable by the value of external condenser WINDOW detection: 1ms < Clock pulse width< TWD (Time width defined by external condenser value) Operating and holding can be changed by Watchdog timer select terminal -40 to 125°C HTSSOP16
Body size: 5.0mm x 4.4mm (0.65mm pitch)