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TPS7A45XX データシート(PDF) 1 Page - Texas Instruments

部品番号 TPS7A45XX
部品情報  LOW-NOISE, FAST-TRANSIENT-RESPONSE 1.5-A LDO VOLTAGE REGULATORS
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI - Texas Instruments

TPS7A45XX データシート(HTML) 1 Page - Texas Instruments

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1
FEATURES
DESCRIPTION
APPLICATIONS
1
3
2
GND
IN
SHDN
SENSE/ADJ
OUT
5
4
KTT PACKAGE
(TOP VIEW)
TPS7A45xx
www.ti.com ...................................................................................................................................................................................................... SLVS720 – JUNE 2008
LOW-NOISE, FAST-TRANSIENT-RESPONSE 1.5-A LDO VOLTAGE REGULATORS
2
• Optimized for Fast Transient Response
• Output Current: 1.5 A
The TPS7A45xx devices are low-dropout (LDO)
regulators optimized for fast transient response. The
• High Output Voltage Accuracy : 1% at 25°C
device can supply 1.5 A of output current with a
• Dropout Voltage: 300 mV
dropout voltage of 300 mV. Operating quiescent
• Low Noise: 35 µV
RMS (10 Hz to 100 kHz)
current is 1 mA, dropping to less than 1
µA in
shutdown. Quiescent current is well controlled; it does
• High Ripple Rejection: 68 dB
not rise in dropout, as with many other regulators. In
• 1-mA Quiescent Current
addition to fast transient response, the TPS7A45xx
• No Protection Diodes Needed
regulators have very low output noise, which makes
them ideal for sensitive RF supply applications.
• Controlled Quiescent Current in Dropout
• Fixed Output Voltages: 1.5 V, 1.8 V, 2.5 V, 3.3 V
Output voltage range is from 1.21 V to 20 V. The
TPS7A45xx
regulators
are
stable
with
output
• Adjustable Output from 1.21 V to 20 V
capacitors as low as 10
µF. Small ceramic capacitors
• <1-µA Quiescent Current in Shutdown
can be used without the necessary addition of ESR,
• Stable with 10-µF Output Capacitor
as
is
common
with
other
regulators.
Internal
protection
circuitry
includes
reverse-battery
• Stable with Ceramic Capacitors
protection, current limiting, thermal limiting, and
• Reverse-Battery Protection
reverse-current protection. The devices are available
• No Reverse Current
in fixed output voltages of 1.5 V, 1.8 V, 2.5 V, 3.3 V,
and as an adjustable device with a 1.21-V reference
• Thermal Limiting
voltage. The TPS7A45xx regulators are available in
the 5-pin TO-263 (KTT) package.
• 3.3-V to 2.5-V Logic Power Supplies
• Post Regulator for Switching Supplies
• Wireless Infrastructure
• Radio-Frequency Systems
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
PowerPAD, PowerFLEX are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2008, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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