TPS793_16 Datasheet, PDF (1/34 Pages) Texas Instruments – Low-Noise, High PSRR, RF, 200-mA Low-Dropout Linear Regulators in NanoStar Wafer Chip Scale and SOT-23

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TPS793
SLVS348L – JULY 2001 – REVISED MAY 2015
TPS793 Low-Noise, High PSRR, RF, 200-mA Low-Dropout Linear Regulators in
NanoStar™ Wafer Chip Scale and SOT-23
1 Features
•1 200-mA RF Low-Dropout Regulator
With Enable
• Available in Fixed-Voltage Versions from 1.8 V to
4.75 V and Adjustable (1.22 V to 5.5 V)
• High PSRR (70 dB at 10 kHz)
• Low Noise (32 μV_RMS, TPS79328)
• Fast Start-Up Time (50 μs)
• Stable With a 2.2-μF Ceramic Capacitor
• Excellent Load and Line Transient Response
• Very Low Dropout Voltage (112 mV at 200 mA,
TPS79330)
• 5- and 6-Pin SOT23 (DBV) and NanoStar Wafer
Chip Scale (YZQ) Packages
2 Applications
• RF: VCOs, Receivers, ADCs
• Audio
• Cellular and Cordless Telephones
• Bluetooth^®, Wireless LAN
• Handheld Organizers, PDAs
3 Description
The TPS793 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 in
NanoStar™ wafer chip scale and SOT23 packages.
NanoStar packaging gives an ultrasmall footprint as
well as an ultralow profile and package weight,
making these devices 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 TPS793 family uses an
advanced, proprietary BiCMOS fabrication process to
yield extremely low dropout voltages (for example,
112 mV at 200 mA, TPS79330). Each device
achieves fast start-up times (approximately 50 μs with
a 0.001-μF bypass capacitor) while consuming very
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
TPS79328 exhibits approximately 32 μV_RMS of output
voltage noise at 2.8-V output with a 0.1-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.
PART NUMBER
TPS793
Device Information⁽¹⁾
PACKAGE
BODY SIZE (NOM)
SOT-23 (6)
2.90 mm × 1.60 mm
SOT-23 (5)
2.90 mm × 1.60 mm
DSBGA (5)
1.35 mm × 1.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Circuit
V_IN
V_IN
V_OUT
IN
OUT
TPS79328
V_OUT
0.1 mF
EN GND NR
10 mF
0.01 mF
Ripple Rejection vs Frequency
100
V_IN = 3.8 V
90 _{COUT = 2.2 mF}
80 ^{CNR = 0.1 mF}
70
I_OUT = 200 mA
60
50
I_OUT = 10 mA
40
30
20
10
0
10 100 1 k 10 k 100 k 1 M 10 M
Frequency (Hz)
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.