TCR5BM/TCR8BM Small Surface Mount LDO Regulators

By Toshiba Semiconductor and Storage 131

TCR5BM/TCR8BM Small Surface Mount LDO Regulators

Toshiba's TCR5BM and TCR8BM are two new series of small surface mount LDO regulators for application in the power supply of mobile devices, imaging, and audio-visual products. The 40 regulators in the TCR5BM series support a dropout voltage as low as 100 mV and a maximum output current of 500 mA, and 40 more in the TCR8BM series extend support to 170 mV and 800 mA. The TCR5BM and TCR8BM series are both available with VOUT as low as 0.8 V or as high as 3.6 V.

Both series are suited to applications that include a power supply for MCU, RF devices, and camera CMOS sensors in mobile devices or imaging and audio-visual equipment, which increasingly use lower voltages around 1 V.

By using a low on-resistance N-channel MOSFET fabricated with the latest generation process and external bias voltage, both series have cut dropout voltage, a cause of power loss, to about 67% that of Toshiba's current products, currently the lowest in the industry.

In addition, with a 98 dB (typ.) ripple rejection ratio, the new products deliver stable operation resistant to high-frequency noise from the external environment and DC/DC converters, both causes of malfunction. They also deliver a fast load transient response that prevents malfunctioning due to swift switching of IC operation modes.

Quiescent current is about 50% lower than other high current LDO regulators in the market, realizing lower power consumption by devices and longer operating times for battery-driven devices.

Both series are housed in the small surface mount 1.2 mm x 1.2 mm DFN5B package, which is excellent for space-constrained designs. The TCR5BM series supports up to 500 mA and the TCR8BM series supports up to 800 mA, allowing users to design products more easily.

  • Low dropout voltage:
    • VDO = 100 mV (typ.) (TCR5BM series)
    • VDO = 170 mV (typ.) (TCR8BM series)
  • High ripple rejection ratio: R.R. = 98 dB (typ.)
  • Fast load response characteristics ensure stable operation when the operation mode changes
  • Mobile devices, image, and audio/visual equipment
    • CMOS sensor power supplies
    • MCU power supplies
    • RF power supplies