Toshiba Launches High Ripple-Rejection Ratio, Low-Noise LDO Regulators With Enhanced Power-Line Stabilization
30 Oktober 2020 - 03:00AM
Business Wire
Toshiba Electronic Devices & Storage Corporation ("Toshiba")
has launched the “TCR3RM Series” of 32 LDO regulators that bring
enhanced power stabilization to DC power lines for mobile devices
such as smartphones and wearable devices. Shipments of the first
products in the series start today, and others will follow in
turn.
This press release features multimedia. View
the full release here:
https://www.businesswire.com/news/home/20201029005516/en/
Toshiba: TCR3RM Series of 32 LDO
regulators that bring enhanced power stabilization to DC power
lines for mobile devices (Photo: Business Wire)
The new TCR3RM series combines a bandgap circuit with a low-pass
filter that allows through only extremely low frequencies, and a
low-noise, high-speed operational amplifier, to realize an
industry-leading[1] high ripple rejection ratio[2] and low output
noise voltage.
The 32 products in the lineup have a maximum output current of
300mA and output voltages ranging from 0.9V to 4.5V. Customers can
select output voltage by application.
The package is a compact DFN4C package, only 1mm x 1mm, suitable
for camera applications, audio applications, and for the RF
circuits of power supply lines in mobile devices requiring
high-density mounting, such as smartphones and wearable
devices.
In typical LDO regulators, when the frequency of noise on input
voltage is over 1kHz, the ripple rejection ratio drops
approximately 20dB for every 10 times increase in frequency. For
noise over 100kHz, it drops approximately 40dB for every 10 times
increase. As a result, the LDO regulator may not be sufficiently
able to remove noise of over 100kHz generated by DC-DC converter
circuits or similar circuits.
The new products offer an ample ripple rejection ratio and
output noise voltage characteristics, even at noise frequencies of
100kHz or higher. This contributes to stabilization of power supply
lines, including high output voltage accuracy.
Applications
Mobile devices
- Smartphones
- Wearable devices
- Audio systems
- RF circuits, etc.
Features
- High ripple rejection ratio : R.R.=100dB (typ.) @f=1kHz,
VOUT=2.8V R.R.=68dB (typ.) @f=100kHz, VOUT=2.8V
- Low output noise voltage : VNO=5μVrms (typ.)
@10Hz≤f≤100kHz
- Low quiescent current : IB(ON)=7μA (typ.) @IOUT=0mA
- Thin and compact DFN4C package : 1.0×1.0mm, t=0.38mm
(typ.)
Main Specifications
Part number
TCR3RMxxA[3]
Package
Name
DFN4C
Size typ. (mm)
@Ta=25°C
1.0×1.0, t=0.38
Operating
ranges
(@Ta= -40 to 85°C)
Output current IOUT (mA)
300
Output voltage VOUT (V)
0.9 to 4.5
Input voltage VIN (V)
1.8 to 5.5
Electrical
Characteristics
(Unless otherwise
specified, @Tj=25°C)
Output voltage
VOUT min/max (mV)
@VOUT<1.8V, Tj= -40 to 85°C
-36/36
Output voltage
VOUT min/max (%)
@VOUT≥1.8V, Tj= -40 to 85°C
-2/2
Quiescent current
IB(ON) typ. (μA)
@IOUT=0mA[4]
7
Ripple rejection ratio
R.R. typ. (dB)
@f=1kHz, Ta=25°C
100
@f=10kHz, Ta=25°C
93
@f=100kHz, Ta=25°C
68
@f=1MHz, Ta=25°C
68
@f=2MHz, Ta=25°C
67
Output noise voltage
VNO typ. (μVrms)
@IOUT=10mA, Ta=25°C
5
Drop-out voltage
VDO typ. (mV)
@VOUT=2.8V, IOUT=300mA
130
Load transient response
⊿VOUT typ. (mV)
@IOUT=1mA→300mA
-30
@IOUT=300mA→1mA
30
Output voltage slew rate
VOUTSR typ. (mV/μs)
@VOUT=2.8V
4
Sample Check &
Availability
Buy Online
Notes: [1] Among LDO regulators with a maximum output of 300 mA,
Toshiba survey as of October 28, 2020. [2] The ripple rejection
ratio (R.R. : Ripple rejection Ratio) is the same as the power
supply rejection rate (PSRR: Power Supply Rejection Ratio)
indicated on other manufacturers' products. [3] 32 products. The
number showing output voltage goes into "xx". [4] Except control
pull down current (ICT)
Follow the link below for more on the new products. TCR3RM
Series
https://toshiba.semicon-storage.com/list/index.php?f%5B%5D=9%7CTCR3RM&p=&h=&sort=3,asc&code=param_610®ion=apc&lang=en&cc=&scroll_x=0&scroll_y=0
Follow the link below for more on Toshiba’s LDO regulators.
Low-Dropout Regulators (LDO Regulators)
https://toshiba.semicon-storage.com/ap-en/semiconductor/product/power-management-ics/low-dropout-regulators-ldo-regulators.html
To check availability of the new products at online
distributors, visit: TCR3RMxxA
https://toshiba.semicon-storage.com/ap-en/semiconductor/where-to-buy/stockcheck.TCR3RM.html
Customer Inquiries Small Signal Device Sales &
Marketing Dept. Tel: +81-3-3457-3411
https://toshiba.semicon-storage.com/ap-en/contact.html
*Company names, product names, and service names may be
trademarks of their respective companies. *Information in this
document, including product prices and specifications, content of
services and contact information, is current on the date of the
announcement but is subject to change without prior notice.
About Toshiba Electronic Devices & Storage
Corporation
Toshiba Electronic Devices & Storage Corporation combines
the vigor of a new company with the wisdom of experience. Since
becoming an independent company in July 2017, the company has taken
its place among the leading general devices companies, and offers
its customers and business partners outstanding solutions in
discrete semiconductors, system LSIs and HDD.
Its 24,000 employees around the world share a determination to
maximize the value of its products, and emphasize close
collaboration with customers to promote co-creation of value and
new markets. The company looks forward to building on annual sales
now surpassing 750-billion yen (US$6.8 billion) and to contributing
to a better future for people everywhere. Find out more about
Toshiba Electronic Devices & Storage Corporation at
https://toshiba.semicon-storage.com/ap-en/top.html
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version on businesswire.com: https://www.businesswire.com/news/home/20201029005516/en/
Media Inquiries: Chiaki Nagasawa Digital Marketing
Department Toshiba Electronic Devices & Storage Corporation
Tel: +81-3-3457-4963 semicon-NR-mailbox@ml.toshiba.co.jp