TPS7A4201 Datasheet, PDF (1/19 Pages) Texas Instruments – 28-V Input Voltage, 50-mA Voltage Regulator

TPS7A42
www.ti.com
28-V Input Voltage, 50-mA Voltage Regulator
Check for Samples: TPS7A42
SBVS184 – DECEMBER 2011
FEATURES
1
•23 Wide Input Voltage Range: 7 V to 28 V
• Accuracy:
– Nominal: 1%
– Over Line, Load, and Temperature: 2.5%
• Low Quiescent Current: 25 µA
• Quiescent Current at Shutdown: 4.1 µA
• Maximum Output Current: 50 mA
• CMOS Logic-Level-Compatible Enable Pin
• Adjustable Output Voltage: ~1.175 V to 26 V
• Stable with Ceramic Capacitors:
– Input Capacitance: ≥ 1 µF
– Output Capacitance: ≥ 4.7 µF
• Dropout Voltage: 290 mV
• Built-In Current-Limit and Thermal Shutdown
Protection
• Package: High Thermal Performance MSOP-8
PowerPAD™
• Operating Temperature Range: –40°C to
+125°C
APPLICATIONS
• Microprocessors, Microcontrollers Powered by
Industrial Busses with High Voltage Transients
• Industrial Automation
• Automotive
• LED Lighting
DGN PACKAGE
3-mm ´ 5-mm MSOP-8 PowerPAD
(TOP VIEW)
OUT
1
FB
2
NC 3
GND 4
8
IN
7
NC
6
NC
5
EN
DESCRIPTION
The TPS7A42 is a very high voltage-tolerant linear
regulator that offers the benefits of a
thermally-enhanced package (MSOP-8), and is able
to withstand continuous dc or transient input voltages
of up to 28 V.
The TPS7A42 is stable with any output capacitance
greater than 4.7 µF and any input capacitance
greater than 1 µF (over temperature and tolerance).
Therefore, implementations of this device require
minimal board space because of its miniaturized
packaging (MSOP-8) and a potentially small output
capacitor. In addition, the TPS7A42 offers an enable
pin (EN) compatible with standard CMOS logic to
enable a low-current shutdown mode.
The TPS7A42 has an internal thermal shutdown and
current limiting to protect the system during fault
conditions. The MSOP-8 packages has an operating
temperature range of T_J = –40°C to +125°C.
In addition, the TPS7A42 is ideal for generating a
low-voltage supply from intermediate voltage rails in
telecom and industrial applications; not only it can
supply a well-regulated voltage rail, but it can also
withstand and maintain regulation during fast voltage
transients. These features translate to simpler and
more cost-effective electrical surge-protection circuitry
for a wide range of applications.
28 V
V_IN
Typical Application
V_IN
IN
OUT
V_OUT
C_IN
Device
C_BYP
R₁
V_EN
EN
GND
FB
C_OUT
R₂
Post DC/DC Converter Regulation for
High-Performace Analog Circuitry
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.
PowerPAD is a trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
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 © 2011, Texas Instruments Incorporated