DBV 5
DBV 6
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TPS73001, TPS73018
TPS73025
TPS73030, TPS73033
SBVS054A – NOVEMBER 2004 – REVISED NOVEMBER 2004
LOW-NOISE, HIGH PSRR, RF 200-mA
LOW-DROPOUT LINEAR REGULATORS
FEATURES
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200-mA RF Low-Dropout Regulator
With Enable
Available in 1.8-V, 2.5-V, 3-V, 3.3-V, and
Adjustable (1.22-V to 5.5-V)
High PSRR (68dB at 1 kHz)
Ultralow-Noise (23 µV
RMS
, TPS73018)
Fast Start-Up Time (50 µs)
Stable With a 2.2-µF Ceramic Capacitor
Excellent Load/Line Transient Response
Very Low Dropout Voltage (120 mV at Full
Load)
5- and 6-Pin SOT23 (DBV) Package
DESCRIPTION
The TPS730xx family of low-dropout (LDO)
low-power linear voltage regulators features high
power-supply rejection ratio (PSRR), ultralow-noise,
fast start-up, and excellent line and load transient
responses a small SOT23 package. Each device in
the family is stable, with a small 2.2-µF ceramic
capacitor on the output. The TPS730xx family uses
an advanced, proprietary BiCMOS fabrication pro-
cess to yield low dropout voltages (e.g., 120 mV at
200 mA, TPS73030). Each device achieves fast
start-up times (approximately 50 µs with a 0.001-µF
bypass capacitor) while consuming low quiescent
current (170 µA typical). Moreover, when the device
is placed in standby mode, the supply current is
reduced to less than 1 µA. The TPS73018 exhibits
approximately 23 µV
RMS
of output voltage noise at
2.8-V output with a 0.01-µF bypass capacitor. Appli-
cations with
analog components
that
are
noise-sensitive, such as portable RF electronics,
benefit from the high PSRR and low-noise features
as well as the fast response time.
APPLICATIONS
RF: VCOs, Receivers, ADCs
Audio
Cellular and Cordless Telephones
Bluetooth™, Wireless LAN
Handheld Organizers, PDAs
TPS73028
DBV PACKAGE
(TOP VIEW)
Output Spectral Noise Density (µV/√Hz)
IN
GND
EN
1
2
3
4
NR
5
OUT
TPS73028
0.30
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
100
V
IN
= 3.8 V
C
OUT
= 2.2
µF
C
NR
= 0.1
µF
Ripple Rejection (dB)
90
80
70
60
50
40
30
20
10
0
0
100
1k
10 k
Frequency (Hz)
100 k
10
RIPPLE REJECTION
vs
FREQUENCY
I
OUT
= 200 mA
0.25
0.20
Fixed Option
DBV PACKAGE
(TOP VIEW)
IN
GND
EN
1
2
3
6
5
4
OUT
FB
NR
0.15
I
OUT
= 1 mA
0.10
I
OUT
= 200 mA
0.05
I
OUT
= 10 mA
V
IN
= 3.8 V
C
OUT
= 10
µF
C
NR
= 0.01
µF
100
1k
10 k
100 k
1M
10 M
Adjustable Option
Frequency (Hz)
Figure 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.
Bluetooth is a trademark of Bluetooth Sig, Inc.
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.
Copyright © 2004, Texas Instruments Incorporated
TI [ TEXAS INSTRUMENTS ]
