Product category:
Power Supply ICs and Controllers
News Release from: Young Electronics Group | Subject: NJM2870 LDOs
Edited by the Electronicstalk Editorial
Team on 21 June 2001
Low-noise LDOs aim for cellular handsets
Available from Young ECC and manufactured by Japan Radio Co, the NJM2870 LDO regulator family uses advanced bipolar technology to achieve low noise, high ripple rejection and low quiescent current.
Available from Young ECC and manufactured by Japan Radio Co, the NJM2870 LDO regulator family uses advanced bipolar technology to achieve low noise, high ripple rejection and low quiescent current Up to 60kHz ripple rejection is over 56dB, while ripple rejection at 100Hz and 1kHz is typically 66 and 60dB, respectively
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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When tested against competitive offerings, the NJM2870 regulator offers significantly better ripple rejection especially at higher frequencies and higher output currents.
Tests also demonstrate much better output voltage noise.
With an output current of 30mA at 100kHz, output noise is typically 25uV with a noise bypass capacitor of 0.1uF and output capacitor of 2.2uF or 120uV with a noise bypass capacitor 10pF and output capacitor of 2.2uF.
In a typical application output noise voltage is around 30uV.
Available in an MTP5 package, the NJM2870, 2871 and 2872 regulators offer different pin configurations.
The series is deal for applications such as cellular phones, portable electronics, and consumer goods where a local LDO is preferred.
Other features include a high precision output of +/-2% (2870) and +/-1% (NJM2871 and 72), low dropout voltage of typically 0.12V at 60mA output current, on/off control as well as internal short circuit current limit and thermal overload protection.
All versions are available in a range of voltage between 1.5 to 5V.
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