TPS730XX Datasheet, PDF (1/15 Pages) Texas Instruments – LOW-NOISE, HIGH PSRR, RF 200-mA LOW-DROPOUT LINEAR REGULATORS

DBV 5 DBV 6 YZQ
TPS730xx
www.ti.com
SBVS054E – NOVEMBER 2004 – REVISED AUGUST 2005
LOW-NOISE, HIGH PSRR, RF 200-mA
LOW-DROPOUT LINEAR REGULATORS
FEATURES
• 200-mA RF Low-Dropout Regulator
With Enable
• Available in 1.8-V, 2.5-V, 2.8-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), and Wafer Chip
Scale (YZQ) Packages
APPLICATIONS
• RF: VCOs, Receivers, ADCs
• Audio
• Cellular and Cordless Telephones
• Bluetooth^®, Wireless LAN
• Handheld Organizers, PDAs
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. NanoStar™
packaging gives an ultrasmall footprint as well as an
ultralow profile and package weight, making it ideal
for portable applications such as handsets and PDAs.
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 process 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 consum-
ing 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. Applications 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.
DBV PACKAGE
(TOP VIEW)
IN
15
OUT
GND
2
EN
34
NR
Fixed Option
DBV PACKAGE
(TOP VIEW)
IN
16
OUT
GND
25
FB
EN
34
NR
Adjustable Option
YZQ PACKAGE
(TOP VIEW)
IN
OUT
C3 C1
B2 NR
A3 A1
EN
GND
TPS73028
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
0.30
0.25
V_IN = 3.8 V
C_OUT = 2.2 µF
C_NR = 0.1 µF
0.20
0.15
0.10
0.05
I_OUT = 1 mA
I_OUT = 200 mA
0
100
1k
10 k
Frequency (Hz)
100 k
TPS73028
RIPPLE REJECTION
vs
FREQUENCY
100
90
I_OUT = 200 mA
80
70
60
50
40
I_OUT = 10 mA
30
20 _{VIN = 3.8 V}
10 ^COUT ^{= 10 µF}
0 ^{CNR = 0.01 µF}
10 100 1 k 10 k 100 k 1 M 10 M
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.
NanoStar is a trademark of Texas Instruments.
Bluetooth is a registered 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 © 2004–2005, Texas Instruments Incorporated