Datasheet

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Table Of Contents

1 10 100 1k 10k 100k 1M 10M

RippleRejection − dB

TPS79530

RIPPLEREJECTION

FREQUENCY

=4V

OUT

=10 mF

=0.01 mF

OUT

=1mA

OUT

=500mA

Frequency (Hz)

Frequency(Hz)

0.1

0.2

0.3

0.4

0.5

100 1k 10k 100k

OUT

=1mA

=5.5V

OUT

=2.2 mF

=0.1 mF

OUT

=0.5A

TPS79530

OUTPUT SPECTRALNOISEDENSITY

FREQUENCY

OutputSpectralNoiseDensity −

mV/

DCQ PACKAGE

SOT223-6

(TOPVIEW)

NR/FB

OUT

GND

NR/FB

OUT

DRB PACKAGE

3mm x 3mm SON

(TOP VIEW)

TPS795xx

www.ti.com

SLVS350H –OCTOBER 2002–REVISED AUGUST 2010

ULTRALOW-NOISE, HIGH-PSRR, FAST, RF, 500-mA

LOW-DROPOUT LINEAR REGULATORS

Check for Samples: TPS795xx

FEATURES

DESCRIPTION

• 500-mA Low-Dropout Regulator With Enable

• Available in Fixed and Adjustable (1.2-V to

The TPS795xx family of low-dropout (LDO),

low-power linear voltage regulators features high

5.5-V) Versions

power-supply rejection ratio (PSRR), ultralow noise,

• High PSRR (50 dB at 10 kHz)

fast start-up, and excellent line and load transient

• Ultralow Noise (33 mV

RMS

, TPS79530)

responses in small outline, SOT223-6 and 3 x 3 SON

• Fast Start-Up Time (50 ms) packages. Each device in the family is stable with a

small 1-mF ceramic capacitor on the output. The

• Stable With a 1-mF Ceramic Capacitor

family uses an advanced, proprietary BiCMOS

• Excellent Load/Line Transient Response

fabrication process to yield extremely low dropout

• Low Dropout Voltage (110 mV at Full Load,

voltages (for example, 110 mV at 500 mA). Each

device achieves fast start-up times (approximately 50

TPS79530)

ms with a 0.001-mF bypass capacitor) while

• 6-Pin SOT223 and 3 × 3 SON Packages

consuming very low quiescent current (265 mA,

typical). Moreover, when the device is placed in

APPLICATIONS

standby mode, the supply current is reduced to less

• RF: VCOs, Receivers, ADCs

than 1 mA. The TPS79530 exhibits approximately 33

• Audio

RMS

of output voltage noise at 3-V output with a

0.1-mF bypass capacitor. Applications with analog

• Bluetooth

, Wireless LAN

components that are noise-sensitive, such as

• Cellular and Cordless Telephones

portable RF electronics, benefit from the high-PSRR

• Handheld Organizers, PDAs

and low-noise features, as well as from the fast

response time.

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.

2Bluetooth is a registered trademark of Bluetooth SIG, Inc.

3All 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.

Summary of content (23 pages)

PAGE 1
TPS795xx www.ti.com SLVS350H – OCTOBER 2002 – REVISED AUGUST 2010 ULTRALOW-NOISE, HIGH-PSRR, FAST, RF, 500-mA LOW-DROPOUT LINEAR REGULATORS Check for Samples: TPS795xx FEATURES 1 • • • • • • • DESCRIPTION 500-mA Low-Dropout Regulator With Enable Available in Fixed and Adjustable (1.2-V to 5.
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TPS795xx SLVS350H – OCTOBER 2002 – REVISED AUGUST 2010 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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TPS795xx www.ti.com SLVS350H – OCTOBER 2002 – REVISED AUGUST 2010 THERMAL INFORMATION TPS795xx (3) THERMAL METRIC (1) (2) qJA Junction-to-ambient thermal resistance (4) qJCtop Junction-to-case (top) thermal resistance (5) (6) DRB (8 PINS) DCQ (6 PINS) 47.8 70.4 83 70 n/a n/a 2.1 6.8 qJB Junction-to-board thermal resistance yJT Junction-to-top characterization parameter (7) yJB Junction-to-board characterization parameter (8) 17.8 30.1 (9) 12.1 6.
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TPS795xx SLVS350H – OCTOBER 2002 – REVISED AUGUST 2010 www.ti.com ELECTRICAL CHARACTERISTICS Over recommended operating temperature range (TJ = –40°C to +125°C), VEN = VIN, VIN = VOUT(nom) + 1 V (1), IOUT = 1 mA, COUT = 10 mF, CNR = 0.01 mF, unless otherwise noted. Typical values are at +25°C. PARAMETER Input voltage, VIN TEST CONDITIONS MIN (1) Internal reference, VFB (TPS79501) 1.200 Continuous output current, IOUT Output voltage range Output voltage Accuracy TPS79501 0.
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TPS795xx www.ti.com SLVS350H – OCTOBER 2002 – REVISED AUGUST 2010 FUNCTIONAL BLOCK DIAGRAM—ADJUSTABLE VERSION IN OUT 300Ω Current Sense UVLO Overshoot Detect GND ILIM SHUTDOWN R1 EN FB UVLO Thermal Shutdown R2 Quickstart Bandgap Reference 1.225 V VIN External to the Device VREF 250 kΩ FUNCTIONAL BLOCK DIAGRAM—FIXED VERSION IN OUT 300Ω Current Sense UVLO Overshoot Detect GND ILIM SHUTDOWN R1 EN UVLO Thermal Shutdown R2 R2 = 40 kΩ Quickstart VIN Bandgap Reference 1.
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TPS795xx SLVS350H – OCTOBER 2002 – REVISED AUGUST 2010 www.ti.com TYPICAL CHARACTERISTICS TPS79530 OUTPUT VOLTAGE vs OUTPUT CURRENT TPS79530 OUTPUT VOLTAGE vs JUNCTION TEMPERATURE TPS79530 GROUND CURRENT vs JUNCTION TEMPERATURE 3.005 3.02 276 VIN = 4 V COUT = 10 µF 3 3.01 274 272 IOUT = 1 mA 2.995 VIN = 4 V COUT = 10 µF IOUT = 1 mA 3 IGND (µA) VOUT (V) VOUT (V) 270 2.99 IOUT = 0.5 A 2.985 2.98 2.99 0 0.1 0.2 0.3 IOUT (mA) 0.4 2.97 0.
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TPS795xx www.ti.com SLVS350H – OCTOBER 2002 – REVISED AUGUST 2010 TYPICAL CHARACTERISTICS (continued) TPS79530 DROPOUT VOLTAGE vs JUNCTION TEMPERATURE 50 125 30 20 VIN = 4 V COUT = 10 µF CNR = 0.1 µF 70 Ripple Rejection − dB 40 100 75 50 IOUT = 1 mA 60 50 40 IOUT = 500 mA 30 20 10 25 10 BW = 100 Hz to 100 kHz 0 0.001 0.01 0.0047 CNR (µF) 0 −40 −25 −10 5 0.
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TPS795xx SLVS350H – OCTOBER 2002 – REVISED AUGUST 2010 www.ti.com TYPICAL CHARACTERISTICS (continued) TPS79530 LOAD TRANSIENT RESPONSE TPS79525 POWER UP/POWER DOWN 4.5 40 4 20 3.5 160 −40 −60 TJ = 25°C 2 1.5 COUT = 10 µF, CNR = 0.01 µF, VL = 3.8 V, dv/dt = 0.5 A/µs 100 80 60 VOUT 1 0.5 40 0 0 20 −0.5 −0.5 0.5 0 200 400 600 800 0 1000 400 800 t (µs) 1200 1600 TJ = −40°C 0 2000 0 100 200 300 IOUT (mA) Time (µs) 400 500 Figure 16. Figure 17. Figure 18.
PAGE 9
TPS795xx www.ti.com SLVS350H – OCTOBER 2002 – REVISED AUGUST 2010 APPLICATION INFORMATION The TPS795xx family of low-dropout (LDO) regulators has been optimized for use in noise-sensitive equipment. The device features extremely low dropout voltages, high PSRR, ultralow output noise, low quiescent current (265 mA typical), and an enable input to reduce supply currents to less than 1 mA when the regulator is turned off. A typical application circuit is shown in Figure 23.
PAGE 10
TPS795xx SLVS350H – OCTOBER 2002 – REVISED AUGUST 2010 www.ti.com PROGRAMMING THE TPS79501 ADJUSTABLE LDO REGULATOR The approximate value of this capacitor can be calculated as Equation 3: (3 10 *7) (R 1 ) R 2) C1 + (R 1 R 2) (3) The output voltage of the TPS79501 adjustable regulator is programmed using an external resistor divider as shown in Figure 24.
PAGE 11
TPS795xx www.ti.com SLVS350H – OCTOBER 2002 – REVISED AUGUST 2010 THERMAL INFORMATION Power Dissipation Knowing the device power dissipation and proper sizing of the thermal plane that is connected to the tab or pad is critical to avoiding thermal shutdown and ensuring reliable operation.
PAGE 12
TPS795xx SLVS350H – OCTOBER 2002 – REVISED AUGUST 2010 www.ti.com For a more detailed discussion of why TI does not recommend using qJC(top) to determine thermal characteristics, see the application report SBVA025, Using New Thermal Metrics, available for download at www.ti.com. For further information, see the application report SPRA953, IC Package Thermal Metrics, also available on the TI website.
PAGE 13
PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
PAGE 15
PACKAGE OPTION ADDENDUM www.ti.com 10-Jun-2014 (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device.
PAGE 16
PACKAGE MATERIALS INFORMATION www.ti.com 4-Jun-2014 TAPE AND REEL INFORMATION *All dimensions are nominal Device TPS79501DRBR Package Package Pins Type Drawing SON DRB 8 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 3000 330.0 12.4 3.3 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3.3 1.1 8.0 12.0 Q2 TPS79501DRBT SON DRB 8 250 180.0 12.4 3.3 3.3 1.1 8.0 12.0 Q2 TPS79516DCQR SOT-223 DCQ 6 2500 330.0 12.4 7.1 7.45 1.88 8.0 12.
PAGE 17
PACKAGE MATERIALS INFORMATION www.ti.com 4-Jun-2014 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS79501DRBR SON DRB 8 3000 367.0 367.0 35.0 TPS79501DRBT SON DRB 8 250 210.0 185.0 35.0 TPS79516DCQR SOT-223 DCQ 6 2500 358.0 335.0 35.0 TPS79518DCQR SOT-223 DCQ 6 2500 358.0 335.0 35.0 TPS79525DCQR SOT-223 DCQ 6 2500 358.0 335.0 35.0 TPS79530DCQR SOT-223 DCQ 6 2500 358.0 335.0 35.
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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.