Shanghai, China, March 3, 2021 – Toshiba electronic components and Storage Devices Co., Ltd. (“Toshiba”) today announced the launch of the “tcr5rg” series composed of 45 LDO regulators. The series is packaged in lightweight and compact wcsp4f. The new LDO regulator has the industry-leading [1] high ripple rejection ratio [2], which can provide more stable power for the DC power line of mobile devices such as wearable products. This series of products will be shipped in batches from today.

Tcr5rg series achieves the industry-leading [1] 100dB (typical value) high ripple rejection ratio [2] by combining broadband gap circuit, low-pass filter (only allowing very low frequency) and low-noise high-speed operational amplifier. In addition, they also have the characteristics of low output voltage noise and high output voltage accuracy. The combination of these characteristics enables the series of voltage regulators to improve the stability of the power line.

The series includes 45 products, with a maximum output current of 500mA and an output voltage range of 0.9V to 5.0V, so that users can choose the most appropriate output voltage according to their own applications.

The new LDO regulator adopts a size of 0.645mm × The 0.645mm thin compact wcsp4f package is suitable for power cord applications of cameras and small devices, such as smartphones and wearable products requiring high-density mounting.


  • Wearable devices (smart watches, sports cameras, etc.)
  • Mobile devices (smartphones, tablets, portable audio players, etc.)
  • Medical care (electric shaver, electronic sphygmomanometer, blood glucose meter, etc.)


  • High ripple rejection ratio: when f = 1kHz, R.R. = 100dB (typical value)
  • Low output noise voltage: VNO = 5 when 10Hz ≤ f ≤ 100kHz μ VRMs (typ.)
  • High output voltage accuracy:

When 1.8V ≤ Vout ≤ 2.8V, TJ = – 40 ℃ to 85 ℃, minimum / maximum Vout = – 1.5% / 1.5%

When Vout > 2.8V, TJ = – 40 ℃ to 85 ℃, minimum / maximum Vout = – 1.8% / 1.8%

  • Lightweight compact wcsp4f package: 0.645mm × 0.645mm (typ.), thickness = 0.33mm (max.)

Main specifications


[1] according to Toshiba’s investigation on LDO Regulator with maximum output of 500mA on March 2, 2021.

[2] the ripple rejection ratio (R.R.) is the same as the power rejection ratio (PSRR) indicated by the products of other manufacturers.

[3] 45 products. This value shows that the output voltage is “XX”.

[4] except for controlled pull-down current (ICT).

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