TPS740xx
www.ti.com
SBVS091A –JUNE 2011–REVISED JUNE 2011
1.5-A, Low-Voltage LDO Regulator with Dual Input Voltages
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FEATURES
DESCRIPTION
The TPS740xx is a wide bandwidth, very low-dropout,
1.5-A voltage regulator ideal for powering
microprocessors.
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Small Consumption Current: 3 mA Maximum
Input Voltage Range:
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–
–
VIN: 1.2 V to 5.5 V
VBIAS: 2.9 V to 5.5 V
The TPS740xx uses a bias input supply to allow very
low voltage of a main input supply. The main input
supply operates from 1.2 V to 5.5 V and the bias
input supply requires between 3.0 V to 5.5 V for
proper operation. The TPS740xx offers adjustable
output voltages down to 0.9 V.
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Stable with Any Output Capacitance: ≥ 2.2 μF
±1% Initial Accuracy
Maximum Dropout Voltage (VIN – VOUT):
300 mV Over Temperature
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Adjustable Output Voltage: Down to 0.9 V
Ultra-Fast Transient Response
Excellent Line and Load Regulation
Logic-Controlled Shutdown Option
Thermal Shutdown and Current Limit
Protection
The TPS740xx requires
capacitance. A small 2.2-μF ceramic capacitor is
enough for its stability.
a minimum of output
The TPS740xx is available in an 8-pin power MSOP
package and
a 5-pin Jr S-PAK. Its operating
temparature range is –40°C to +125°C.
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Power 8-Pin Mini Small-Outline Package
(MSOP) and Jr S-PAK™ packages.
Junction Temperature Range: –40°C to +125°C
100
90
80
70
60
50
40
30
20
+125°C
+25°C
APPLICATIONS
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Graphics Processors
PC Add-In Cards
Microprocessors
Low-Voltage Digital ICs
High-Efficiency Linear Power Supplies
Switch-Mode Power-Supply Post Regulation
-40°C
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0
0
0.5
1.0
1.5
IOUT (A)
Dropout Voltage
VIN
VOUT
IN
OUT
FB
R1
R2
CIN
COUT
TPS74001
VBIAS
BIAS
GND
CBIAS
Typical Application Circuit (Adjustable)
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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.
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Jr S-PAK is a trademark of Texas Instruments Incorporated.
All other trademarks are the property of their respective owners.
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