TPS74001 Datasheet, PDF (1/25 Pages) Texas Instruments – 1.5-A, Low-Voltage LDO Regulator with Dual Input Voltages

TPS740xx
www.ti.com
SBVS091C – JUNE 2011 – REVISED DECEMBER 2011
1.5-A, Low-Voltage LDO Regulator with Dual Input Voltages
FEATURES
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•23 Small Consumption Current: 3 mA Maximum
• Input Voltage Range:
– V_IN: 1.2 V to 6.0 V
– V_BIAS: 2.9 V to 6.0 V
• Stable with Any Output Capacitance: ≥ 2.2 μF
• ±1% Initial Accuracy
• Maximum Dropout Voltage (V_IN – V_OUT):
300 mV Over Temperature
• 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
• Power 8-Pin Mini Small-Outline Package
(MSOP) and Jr S-PAK™ packages.
• Junction Temperature Range: –40°C to +125°C
APPLICATIONS
• Graphics Processors
• PC Add-In Cards
• Microprocessors
• Low-Voltage Digital ICs
• High-Efficiency Linear Power Supplies
• Switch-Mode Power-Supply Post Regulation
DESCRIPTION
The TPS740xx is a wide bandwidth, very low-dropout,
1.5-A voltage regulator ideal for powering
microprocessors.
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 6.0 V and the bias
input supply requires between 3.0 V to 6.0 V for
proper operation. The TPS740xx offers adjustable
output voltages down to 0.9 V.
The TPS740xx requires a minimum of output
capacitance. A small 2.2-μF ceramic capacitor is
enough for its stability.
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.
100
90
80
70
60
50
40
30
20
10
0
0
+125°C
+25°C
-40°C
0.5
1.0
1.5
I_OUT (A)
Dropout Voltage
V_IN
V_BIAS
C_IN
C_BIAS
IN
OUT
R₁
TPS74001 ^FB
BIAS
R₂
GND
V_OUT
C_OUT
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.
Jr S-PAK is a trademark of Texas Instruments Incorporated.
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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