TPS72301-Q1_16 Datasheet, PDF (1/16 Pages) Texas Instruments – 200-mA Low-Noise, High-PSRR, Negative-Output, Low-Dropout Linear Regulators

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TPS72301-Q1
TPS72325-Q1
SLVSAJ4B – SEPTEMBER 2010 – REVISED SEPTEMBER 2012
200-mA Low-Noise, High-PSRR, Negative-Output, Low-Dropout Linear Regulators
Check for Samples: TPS72301-Q1, TPS72325-Q1
FEATURES
1
•2 Qualified for Automotive Applications
• Ultralow Noise: 60 μV_RMS Typical
• High PSRR: 65 dB Typical at 1kHz
• Low Dropout Voltage: 280 mV Typical at 200
mA, 2.5 V
• Available in –2.5 V and Adjustable (–1.2 V to
–10 V) Versions
• Stable With a 2.2-μF Ceramic Output Capacitor
• Less Than 2-μA Typical Quiescent Current in
Shutdown Mode
• 2% Overall Accuracy
(Line, Load, Temperature)
• Thermal and Overcurrent Protection
• SOT23-5 (DBV) Package
• Operating Junction Temperature Range: –40°C
to 125°C
APPLICATIONS
• Optical Drives
• Optical Networking
• Noise-Sensitive Circuitry
• GaAs FET Gate Bias
• Video Amplifiers
DESCRIPTION
The TPS723xx-Q1 family of low-dropout (LDO)
negative voltage regulators offers an ideal
combination of features to support low-noise
applications. This device is capable of operating with
input voltages from –10 V to –2.7 V. The TPS72325-
Q1 regulator is stable with small, low-cost ceramic
capacitors, and includes enable (EN) and noise-
reduction (NR) functions. Internal detection and
shutdown logic provide thermal short-circuit and
overcurrent protection. High PSRR (65 dB at 1 kHz)
and low noise (60 μV_RMS) make the TPS723xx-Q1
ideal for low-noise applications.
The TPS723xx-Q1 uses a precision voltage reference
to achieve 2% overall accuracy over load, line, and
temperature variations. Available in a small SOT23-5
package, the TPS723xx-Q1 specification covers the
full temperature range of –40°C to 125°C.
2.2mF
Typical Application Circuit
2 _IN
OUT ⁵
2.2mF
+1.5V
GND
-1.5V
On
Off
On
DBV PACKAGE
(TOP VIEW)
GND 1 5 OUT
IN
2
EN
3 4 NR
3 _EN
NR ⁴
GND
1
10nF
1
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2
PRODUCTION DATA information is current as of publication date.
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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