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GND

SHDN

SENSE/ADJ

OUT

KTT PACKAGE

(TOP VIEW)

DCQ PACKAGE

(TOP VIEW)

GND

SHDN

SENSE/ADJ

OUT

GND

TPS7A45xx

www.ti.com

SLVS720D –JUNE 2008–REVISED AUGUST 2011

LOW-NOISE FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE

REGULATORS

Check for Samples: TPS7A45xx

FEATURES

DESCRIPTION

• Optimized for Fast Transient Response

The TPS7A45xx devices are low-dropout (LDO)

• Output Current: 1.5 A

regulators optimized for fast transient response. The

• High Output Voltage Accuracy : 1% at 25°C

device can supply 1.5 A of output current with a

dropout voltage of 300 mV. Operating quiescent

• Dropout Voltage: 300 mV

current is 1 mA, dropping to less than 1 μA in

• Low Noise: 35 μV

RMS

(10 Hz to 100 kHz)

shutdown. Quiescent current is well controlled; it does

• High Ripple Rejection: 68 dB at 1KHz

not rise in dropout, as with many other regulators. In

addition to fast transient response, the TPS7A45xx

• 1-mA Quiescent Current

regulators have very low output noise, which makes

• No Protection Diodes Needed

them ideal for sensitive RF supply applications.

• Controlled Quiescent Current in Dropout

Output voltage range is from 1.21 V to 20 V. The

• Fixed Output Voltages: 1.5 V, 1.8 V, 2.5 V, 3.3 V

TPS7A45xx regulators are stable with output

• Adjustable Output from 1.21 V to 20 V

capacitance as low as 10 μF. Small ceramic

capacitors can be used without the necessary

• Less Than 1-μA Quiescent Current in

addition of ESR, as is common with other regulators.

Shutdown

Internal protection circuitry includes reverse-battery

• Stable with 10-μF Ceramic Output Capacitor

protection, current limiting, thermal limiting, and

• Reverse-Battery Protection

reverse-current protection. The devices are available

in fixed output voltages of 1.5 V, 1.8 V, 2.5 V, 3.3 V,

• Reverse Current Protection

and as an adjustable device with a 1.21-V reference

voltage. The TPS7A45xx regulators are available in

APPLICATIONS

the 5-pin TO-263 (KTT) and 6-pin TO-223 (DCQ)

• Industrial

packages.

• Wireless Infrastructure

• Radio-Frequency Systems

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.

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.

Summary of content (28 pages)

PAGE 1
TPS7A45xx SLVS720D – JUNE 2008 – REVISED AUGUST 2011 www.ti.com LOW-NOISE FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS Check for Samples: TPS7A45xx FEATURES 1 • • • • • • • • • • • • • • • Optimized for Fast Transient Response Output Current: 1.
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TPS7A45xx SLVS720D – JUNE 2008 – REVISED AUGUST 2011 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure.
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TPS7A45xx SLVS720D – JUNE 2008 – REVISED AUGUST 2011 www.ti.com ELECTRICAL CHARACTERISTICS (1) Over operating temperature range TJ = –40°C to 125°C (unless otherwise noted) PARAMETER TEST CONDITIONS Minimum input voltage VIN (3) (4) 25°C 1.9 2.1 2.5 VIN = 2.5 V to 20 V, ILOAD = 1 mA to 1.5 A VIN = 2.3 V, ILOAD = 1 mA Regulated output voltage (5) VIN = 2.8 V to 20 V, ILOAD = 1 mA to 1.5 A VIN = 3 V, ILOAD = 1 mA TPS7A4525 VIN = 3.5 V to 20 V, ILOAD = 1 mA to 1.5 A VIN = 3.
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TPS7A45xx SLVS720D – JUNE 2008 – REVISED AUGUST 2011 www.ti.com ELECTRICAL CHARACTERISTICS(1) (continued) Over operating temperature range TJ = –40°C to 125°C (unless otherwise noted) PARAMETER TEST CONDITIONS VDO ILOAD = 100 mA IADJ Output voltage noise ADJ pin bias current I SHDN 0.13 0.17 Full range 0.180 0.300 Full range 0.350 0.450 ILOAD = 0 mA Full range 1 1.5 ILOAD = 1 mA Full range 1.1 1.6 ILOAD = 100 mA Full range 3.3 3.5 ILOAD = 500 mA Full range 15 17 ILOAD = 1.
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TPS7A45xx SLVS720D – JUNE 2008 – REVISED AUGUST 2011 www.ti.com DEVICE INFORMATION TERMINAL FUNCTIONS PIN NO. 1 DESCRIPTION NAME SHDN Shutdown. SHDN is used to put the TPS7A45xx regulators into a low-power shutdown state. The output is off when SHDN is pulled low. SHDNcan be driven by 5-V logic, 3-V logic or open-collector logic with a pullup resistor.
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TPS7A45xx SLVS720D – JUNE 2008 – REVISED AUGUST 2011 www.ti.com TYPICAL CHARACTERISTICS DROPOUT VOLTAGE vs OUTPUT CURRENT DROPOUT VOLTAGE vs TEMPERATURE 480 500 450 IOUT = 1.5 A 400 Dropout Voltage – mV Dropout Voltage – mV 360 350 TA = 125°C 300 250 200 TA = 25°C 150 240 IOUT = 0.5 A IOUT = 100 mA 120 100 50 IOUT = 1 mA 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 0 -50 1.6 -25 0 Figure 1. Figure 2. QUIESCENT CURRENT vs TEMPERATURE OUTPUT VOLTAGE vs TEMPERATURE 1.
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TPS7A45xx SLVS720D – JUNE 2008 – REVISED AUGUST 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) OUTPUT VOLTAGE vs TEMPERATURE OUTPUT VOLTAGE vs TEMPERATURE 2.58 2.56 3.38 VOUT Fixed 2.5 V TPS7A4525 IIOUT = 1 mA OUT = 1 mA 3.34 Output Voltage – V 2.54 Output Voltage – V VTPS7A4533 OUT Fixed 3.3 V I IOUT OUT = 1 mA 3.36 2.52 2.5 2.48 3.32 3.3 3.28 2.46 3.26 2.44 3.24 2.42 -50 3.
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TPS7A45xx SLVS720D – JUNE 2008 – REVISED AUGUST 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) GROUND CURRENT vs INPUT VOLTAGE GROUND CURRENT vs INPUT VOLTAGE 10 100 TJ = 25°C 90 VSHDN = VIN TPS7A4501 VOUT Adjustable 80 TPS7A4501 VOUT Adjustable 8 VOUT = 1.21 V 70 VOUT = 1.21 V 60 Ground Current – mA Ground Current – mA TJ = 25°C VSHDN = VIN IOUT = 1.5 A 50 40 IOUT = 1 A 30 6 IOUT = 300 mA 4 IOUT = 100 mA 20 2 IOUT = 0.
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TPS7A45xx SLVS720D – JUNE 2008 – REVISED AUGUST 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) GROUND CURRENT vs OUTPUT CURRENT SHDN INPUT CURRENT vs TEMPERATURE 1 80 VIN = VOUT(nom) + 1 VSHDN = 0 V 70 SHDN Input Current – µA Ground Current – mA 60 50 40 30 20 0.75 0.5 0.25 10 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 0 -50 1.6 -25 0 25 50 75 100 125 100 125 TA – Free-Air Temperature – °C Output Current – A Figure 13. Figure 14.
PAGE 10
TPS7A45xx SLVS720D – JUNE 2008 – REVISED AUGUST 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) SHDN THRESHOLD (ON TO OFF) vs TEMPERATURE ADJ BIAS CURRENT vs TEMPERATURE 5 1 0.9 4.5 0.8 4 0.7 3.5 ADJ Bias Current – µA SHDN Input Voltage – V IOUT = 1 mA 0.6 0.5 0.4 0.3 3 2.5 2 1.5 0.2 1 0.1 0.5 0 -50 -25 0 25 50 75 100 0 -50 125 -25 0 25 50 75 TA – Free-Air Temperature – °C TA – Free-Air Temperature – °C Figure 17. Figure 18.
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TPS7A45xx SLVS720D – JUNE 2008 – REVISED AUGUST 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) REVERSE OUTPUT CURRENT vs OUTPUT VOLTAGE REVERSE OUTPUT CURRENT vs TEMPERATURE 12 1000 TJ = 25°C VIN = 0 V VIN = 0 V Current flows into OUT pin Reverse Output Current – µA Reverse Output Current – mA 10 8 VOUT Adjustable TPS7A4501 VOUT= =VV ADJ VOUT ADJ 6 4 2 800 600 VOUT Fixed 3.3V TPS7A4533 VOUT==3.3 3.3VV VOUT 400 VOUT Adjustable TPS7A4501 VOUT==1.21 1.21VV VOUT 200 0 VOUT Fixed 3.
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TPS7A45xx SLVS720D – JUNE 2008 – REVISED AUGUST 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) OUTPUT NOISE VOLTAGE vs FREQUENCY LOAD TRANSIENT RESPONSE 1 V = 4.3 V VIN IN = 4.3 V CIN C µF IN = 10 µF COUT == 10 C 10 µF µF (ceramic) Change in Outupt Voltage OUT TPS7A4533 V OUT Fixed 3.3 V 0.1 Load Current Output Noise Hz Output NoiseVoltage Voltage––µV/ µVÖRMS 10(ceramic) µF COUTC=OUT 10=µF IOUT =IOUT 1.5=A1.5 A VTPS7A4501 OUT Adjustable 0.
PAGE 13
TPS7A45xx SLVS720D – JUNE 2008 – REVISED AUGUST 2011 www.ti.com APPLICATION INFORMATION The TPS7A45xx series are 1.5-A low-dropout regulators optimized for fast transient response. The devices are capable of supplying 1.5 A at a dropout voltage of 300 mV. The low operating quiescent current (1 mA) drops to less than 1 μA in shutdown. In addition to the low quiescent current, the TPS7A45xx regulators incorporate several protection features that make them ideal for use in battery-powered systems.
PAGE 14
TPS7A45xx SLVS720D – JUNE 2008 – REVISED AUGUST 2011 www.ti.com R1 0.01 W VIN > 3.7 V IN 3.3 V at 3 A OUT TPS7A4533 C1 10 µF C2 22 µF SHDN SENSE GND R2 0.01 W IN OUT R6 6.65 kW TPS7A4501 SHDN SHDN SENSE GND R7 4.12 kW R3 2.2 kW R4 2.2 kW R5 1 kW + – C3 0.01 µF NOTE: All capacitors are ceramic. Figure 31. Paralleling Regulators for Higher Output Current RP IN OUT TPS7A4501 VIN SHDN SENSE Load GND RP Figure 32.
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TPS7A45xx SLVS720D – JUNE 2008 – REVISED AUGUST 2011 www.ti.com Adjustable Operation The adjustable version of the TPS7A45xx has an output voltage range of 1.21 V to 20 V. The output voltage is set by the ratio of two external resistors as shown in Figure 33. The device maintains the voltage at the ADJ pin at 1.21 V referenced to ground. The current in R1 is then equal to (1.21 V/R1), and the current in R2 is the current in R1 plus the ADJ pin bias current.
PAGE 16
TPS7A45xx SLVS720D – JUNE 2008 – REVISED AUGUST 2011 Output Voltage Noise The TPS7A45xx regulators have been designed to provide low output voltage noise over the 10-Hz to 100-kHz bandwidth while operating at full load. Output voltage noise is typically 35 nV/√Hz over this frequency bandwidth for the TPS7A4501 (adjustable version). For higher output voltages (generated by using a resistor divider), the output voltage noise is gained up accordingly.
PAGE 17
TPS7A45xx www.ti.com Calculating Junction Temperature Example: Given an output voltage of 3.3 V, an input voltage range of 4 V to 6 V, an output current range of 0 mA to 500 mA, and a maximum ambient temperature of 50°C, what is the maximum junction temperature? The power dissipated by the device is equal to: IOUT(MAX)(VIN(MAX) – VOUT) + IGND(VIN(MAX)) where, IOUT(MAX) = 500 mA VIN(MAX) = 6 V IGND at (IOUT = 500 mA, VIN = 6 V) = 10 mA So, P = 500 mA × (6 V – 3.3 V) + 10 mA × 6 V = 1.
PAGE 18
TPS7A45xx SLVS720D – JUNE 2008 – REVISED AUGUST 2011 www.ti.com REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision C (December, 2010) to Revision D • 18 Page Replaced the Dissipation Ratings table with the Thermal Information table ........................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 10-Jun-2014 Status (1) TPS7A4533KTTR ACTIVE Package Type Package Pins Package Drawing Qty DDPAK/ TO-263 KTT 5 500 Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Op Temp (°C) Device Marking (4/5) -40 to 125 TPS7A4533 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 31-May-2014 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) TPS7A4501DCQR SOT-223 DCQ 6 2500 330.0 12.4 TPS7A4501DCQT SOT-223 DCQ 6 250 177.8 TPS7A4501KTTR DDPAK/ TO-263 KTT 5 500 330.
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PACKAGE MATERIALS INFORMATION www.ti.com 31-May-2014 Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TO-263 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS7A4501DCQR SOT-223 DCQ 6 2500 358.0 335.0 35.0 TPS7A4501DCQT SOT-223 DCQ 6 250 180.0 180.0 85.0 TPS7A4501KTTR DDPAK/TO-263 KTT 5 500 340.0 340.0 38.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.