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TPS72301
TPS72325
SLVS346鈭扴EPTEMBER 2003
200 mA LOW NOISE, HIGH PSRR NEGATIVE OUTPUT
LOW DROPOUT LINEAR REGULATORS
FEATURES
D
Ultralow Noise: 60-碌V
RMS
Typical
D
High PSRR: 65-dB Typical at 1 kHz
D
Low Dropout Voltage: 280-mV Typical at
200 mA, 2.5 V
APPLICATIONS
D
Optical Drives
D
Optical Networking
D
Noise Sensitive Circuitry
D
GaAs FET Gate Bias
D
Video Amplifiers
DESCRIPTION
The TPS723xx family of low-dropout (LDO) negative
voltage regulators offers an ideal combination of features
to support low noise applications. The devices are capable
of operating with input voltages from 鈭?0 V to 鈭?.7 V, and
supporting outputs from 鈭?0 V to 鈭?.2 V. These regulators
are 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 1 k Hz) and low noise (60
碌V
RMS
) make
the TPS723xx ideal for low-noise applications.
The TPS723xx uses a precision voltage reference to
achieve 2% overall accuracy over load, line, and
temperature variations. Available in a small SOT23鈭?
package, the TPS723xx family is fully specified over a
temperature range of 鈭?0掳C to 125掳C.
DBV PACKAGE (TOP VIEW)
TPS72301
D
Available in 鈭?.5 V, and Adjustable
(鈭?.2 V to 鈭?0 V) Versions
D
Stable With a 2.2-碌F Ceramic Output
Capacitor
D
Less Than 2-碌A Typical Quiescent Current in
Shutdown Mode
D
2% Overall Accuracy (Line, Load,
Temperature)
D
Thermal and Overcurrent Protection
D
5-Pin SOT-23 (DBV) Package
D
鈭?0掳C to 125掳C Operating Junction
Temperature Range
TYPICAL APPLICATION CIRCUIT
GND
+1.5 V
GND
鈭?.5 V
ON
OFF
ON
1
2
3
5
OUT
2
IN
OUT
5
IN
EN
4
FB
Adjustable Option
3
EN
GND
1
+1.5 V
GND
鈭?.5 V
NR
4
DBV PACKAGE (TOP VIEW)
TPS723xx
GND
ON
OFF
ON
1
2
3
5
OUT
IN
EN
4
NR
Fixed Option
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.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright
铮?/div>
2003, Texas Instruments Incorporated
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