TPS793-Q1 Datasheet, PDF (1/29 Pages) Texas Instruments – Ultralow-Noise, High-PSRR, Fast RF 200-mA Low-Dropout Linear Regulators

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TPS793-Q1
SGLS162I – APRIL 2003 – REVISED MARCH 2016
TPS793-Q1 Ultralow-Noise, High-PSRR, Fast RF 200-mA
Low-Dropout Linear Regulators
1 Features
•1 Qualified For Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to
+125°C
– Device HBM ESD Classification Level 1C
– Device CDM ESD Classification Level C2
• 200-mA Low-Dropout Regulator With EN
• Available in 1.8-V, 2.5-V, 2.8-V, 3-V, 3.3-V, 4.75-
V, and Adjustable Options
• High PSRR (70 dB at 10 kHz)
• Ultralow Noise (32 μV)
• Fast Start-Up Time (50 μs)
• Stable With a 2.2-μF Ceramic Capacitor
• Excellent Load and Line Transient
• Very Low Dropout Voltage
(112 mV at Full Load, TPS79330-Q1)
• 5-Pin SOT-23 (DBV) Package
2 Applications
• VCOs
• RF
• Bluetooth™
TPS79328-Q1 Ripple Rejection vs Frequency
100
90
I_O = 200 mA
80
70
60
50
40
I_O = 10 mA
30
20 _{VI = 3.8 V}
10 ^Co ^{= 10 mF}
0
C_(byp) = 0.01 mF
10 100 1 k 10 k 100 k 1 M 10 M
f − Frequency − Hz
3 Description
The TPS793xx-Q1 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 a small-outline SOT-23 package. Each
TPS793-Q1 device in the family is stable, with a small
2.2-μF ceramic capacitor on the output. The
TPS793xx-Q1 family uses an advanced, proprietary,
BiCMOS fabrication process to yield extremely low
dropout voltages (for example, 112 mV at 200 mA,
TPS79330-Q1). 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-Q1
exhibits approximately 32 μV_RMS of output voltage
noise 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.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS793xx-Q1
SOT-23 (6)
2.90 × 2.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
TPS79328-Q1 Output Spectral Noise Density vs
Frequency
0.3
0.25
V_I = 3.8 V
C_o = 2.2 mF
C_(byp) = 0.1 mF
0.2
0.15
0.1
0.05
I_O = 1 mA
I_O = 200 mA
0
100
1k
10 k
f − Frequency − Hz
100 k
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.