TPS72301-Q1 Datasheet, PDF (1/16 Pages) Texas Instruments – 200 mA Low-Noise, High-PSRR Negative Output Low-Dropout Linear Regulators

TPS72301-Q1
TPS72325-Q1
www.ti.com
SLVSAJ4A – SEPTEMBER 2010 – REVISED MARCH 2011
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: 280mV Typical at 200
mA, 2.5 V
• Available in –2.5V and Adjustable (–1.2V
to –10V) 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 Over-Current 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 regulator offers an ideal combination
of features to support low noise applications. This
device is capable of operating with input voltages
from –10V to –2.7V. The TPS72325-Q1 regulator is
stable with small, low-cost ceramic capacitors, and
include enable (EN) and noise reduction (NR)
functions. Thermal short-circuit and over-current
protections are provided by internal detection and
shutdown logic. High PSRR (65 dB at 1kHz) and low
noise (60μV_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 is fully specified over a
temperature range of –40°C to +125°C.
2.2mF
Typical Application Circuit
2 _IN
OUT ⁵
2.2mF
3
EN
NR ⁴
GND
1
10nF
+1.5V
GND
-1.5V
On
Off
On
DBV PACKAGE
(TOP VIEW)
GND 1 5 OUT
IN
2
EN
3 4 NR
1
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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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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