TPS7A7200_15 Datasheet, PDF (1/32 Pages) Texas Instruments – 2-A, Fast-Transient, Low-Dropout Voltage Regulator

TPS7A7200
www.ti.com
SBVS136E – MARCH 2012 – REVISED SEPTEMBER 2013
2-A, Fast-Transient, Low-Dropout Voltage Regulator
Check for Samples: TPS7A7200
FEATURES
1
•234 Low Dropout Voltage: 180 mV at 2 A
• V_IN Range: 1.5 V to 6.5 V
• Configurable Fixed V_OUT Range: 0.9 V to 3.5 V
Adjustable V_OUT Range: 0.9 V to 5.0 V
• Very Good Load and Line Transient Response
• Stable with Ceramic Output Capacitor
• 1.5% Accuracy over Line, Load, and
Temperature
• Programmable Softstart
• Power Good (PG) Output
• 3-mm × 3-mm QFN-16 and 5-mm × 5-mm QFN-
20 Packages
APPLICATIONS
• Wireless Infrastructure: SerDes, FPGA, DSP™
• RF Components: VCO, ADC, DAC, LVDS
• Set-Top Boxes: Amplifier, ADC, DAC, FPGA,
DSP
• Wireless LAN, Bluetooth^®
• PCs and Printers
• Audio and Visual
DESCRIPTION
The TPS7A7200 low-dropout (LDO) voltage regulator
is designed for applications seeking very-low dropout
capability (180 mV at 2 A) with an input voltage from
1.5 V to 6.5 V. The TPS7A7200 offers an innovative,
user-configurable, output-voltage setting from 0.9 V to
3.5 V, eliminating external resistors and any
associated error.
The TPS7A7200 has very fast load-transient
response, is stable with ceramic output capacitors,
and supports a better than 2% accuracy over line,
load, and temperature. A soft-start pin allows for an
application to reduce inrush into the load.
Additionally, an open-drain, power-good signal allows
for sequencing power rails.
The TPS7A7200 is available in 3-mm × 3-mm,
16-pin QFN and 5-mm × 5-mm, 20-pin QFN
packages.
6
5.5V to 5.0V
5
Output Current
4
3
3
Output Current Slew Rate: 1A/µs
3.3V to 3.0V 2.5V to 1.8V
2
3.0V to 2.5V
1.8V to 1.5V
1.5 V
C_IN
C_SS
Optional
IN
PG
TPS7A7200
EN
SS
OUT
SNS
FB
GND
50mV
100mV
1.6V
200mV 400mV 800mV
1.2 V = 0.5 V_ref
+ 100 mV
C_FF
C_OUT
+
+
200
400
mV
mV
2
1
1
1.5V to 1.2V 1.5V to 1.0V
0
0
Time (100µs/div)
G311
Load Transient Response with
Seven Different Results:
1.5 V_IN to 1.0 V_OUT, 1.5 V_IN to 1.2 V_OUT,
1.8 V_IN to 1.5 V_OUT, 2.5 V_IN to 1.8 V_OUT,
3.0 V_IN to 2.5 V_OUT, 3.3 V_IN to 3.0 V_OUT,
and 5.5 V_IN to 5.0 V_OUT
Typical Application
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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.
DSP is a trademark of Texas Instruments.
2
Bluetooth is a registered trademark of Bluetooth SIG, Inc.
3
All other trademarks are the property of their respective owners.
4
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 © 2012–2013, Texas Instruments Incorporated