Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - LDO voltage regulator Positivbe, adjustable TO 263 5

GND

NR/FB

OUT

GND

KTT (DDPAK) PACKAGE

(TOP VIEW)

GND

OUT

NR/FB

GND

NR/FB

OUT

DRB PACKAGE

3mm x 3mm SON

(TOP VIEW)

Ripple Rejection − dB

Output Spectral Noise Density V/- m Hz

DCQ PACKAGE

SOT223-6

(TOP VIEW)

Frequency (Hz)

1 10k 10M1k

OUT

= 1 mA

TPS78630

RIPPLE REJECTION

FREQUENCY

OUT

= 1.5 A

= 4 V

OUT

= 10 mF

= 0.01 mF

10 100 100k 1M

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

Frequency (Hz)

100 10k 100k1k

OUT

= 1 mA

TPS78630

OUTPUT SPECTRAL NOISE DENSITY

FREQUENCY

OUT

= 1.5 A

= 5.5 V

OUT

= 2.2 mF

= 0.1 mF

TPS786xx

www.ti.com

SLVS389L –SEPTEMBER 2002–REVISED OCTOBER 2010

ULTRALOW-NOISE, HIGH-PSRR, FAST, RF, 1.5-A

LOW-DROPOUT LINEAR REGULATORS

Check for Samples: TPS786xx

FEATURES

DESCRIPTION

234

• 1.5-A Low-Dropout Regulator With Enable

The TPS786xx family of low-dropout (LDO)

low-power linear voltage regulators features high

• Available in Fixed and Adjustable (1.2-V to

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

5.5-V) Output Versions

fast start-up, and excellent line and load transient

• High PSRR (49 dB at 10 kHz)

responses in small outline, SOT223-6 and DDPAK-5

• Ultralow Noise (48 mV

RMS

, TPS78630)

packages. Each device in the family is stable, with a

small 1-mF ceramic capacitor on the output. The

• Fast Start-Up Time (50 ms)

family uses an advanced, proprietary BiCMOS

• Stable With a 1-mF Ceramic Capacitor

fabrication process to yield extremely low dropout

• Excellent Load/Line Transient Response

voltages (for example, 390 mV at 1.5 A). Each device

achieves fast start-up times (approximately 50 ms with

• Very Low Dropout Voltage (390 mV at Full

a 0.001-mF bypass capacitor) while consuming very

Load, TPS78630)

low quiescent current (265 mA, typical). Moreover,

• 3 × 3 SON PowerPAD™, 6-Pin SOT223 and

when the device is placed in standby mode, the

5-Pin DDPAK Package

supply current is reduced to less than 1 mA. The

TPS78630 exhibits approximately 48 mV

RMS

of output

APPLICATIONS

voltage at 3.0-V output noise with a 0.1-mF bypass

• RF: VCOs, Receivers, ADCs

capacitor. Applications with analog components that

are noise sensitive, such as portable RF electronics,

• Audio

benefit from the high PSRR, low noise features, and

• Bluetooth

, Wireless LAN

the fast response time.

• Cellular and Cordless Telephones

• Handheld Organizers, PDAs

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.

2PowerPAD is a trademark of Texas Instruments Inc.

3Bluetooth is a registered trademark of Bluetooth SIG, Inc.

4All 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 (29 pages)

PAGE 1
TPS786xx www.ti.com SLVS389L – SEPTEMBER 2002 – REVISED OCTOBER 2010 ULTRALOW-NOISE, HIGH-PSRR, FAST, RF, 1.5-A LOW-DROPOUT LINEAR REGULATORS Check for Samples: TPS786xx FEATURES DESCRIPTION • 1.5-A Low-Dropout Regulator With Enable • Available in Fixed and Adjustable (1.2-V to 5.
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TPS786xx SLVS389L – SEPTEMBER 2002 – REVISED OCTOBER 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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TPS786xx www.ti.com SLVS389L – SEPTEMBER 2002 – REVISED OCTOBER 2010 THERMAL INFORMATION TPS786xx (3) THERMAL METRIC (1) (2) Junction-to-ambient thermal resistance (4) qJA (5) DRB DCQ KTT 8 PINS 6 PINS 5 PINS 47.8 70.4 25 qJCtop Junction-to-case (top) thermal resistance 83 70 35 qJB Junction-to-board thermal resistance (6) N/A N/A N/A yJT Junction-to-top characterization parameter (7) 2.1 6.8 1.5 yJB Junction-to-board characterization parameter (8) 17.8 30.1 8.
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TPS786xx SLVS389L – SEPTEMBER 2002 – REVISED OCTOBER 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, and CNR = 0.01 mF, unless otherwise noted. Typical values are at +25°C. PARAMETER Input voltage, VIN TEST CONDITIONS MIN (1) Internal reference, VFB (TPS78601) Output voltage range TPS78601 (2) 0 mA ≤ IOUT ≤ 1.5 A, VOUT + 1 V ≤ VIN ≤ 5.5 V (1) Accuracy V V 0 1.5 A 1.
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TPS786xx www.ti.com SLVS389L – SEPTEMBER 2002 – REVISED OCTOBER 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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TPS786xx SLVS389L – SEPTEMBER 2002 – REVISED OCTOBER 2010 www.ti.com TYPICAL CHARACTERISTICS TPS78630 OUTPUT VOLTAGE vs OUTPUT CURRENT TPS78628 OUTPUT VOLTAGE vs JUNCTION TEMPERATURE 2.798 5 3.05 VIN = 4 V COUT = 10 µF TJ = 25°C 3.04 3.03 350 VIN = 3.8 V COUT = 10 µF 340 2.794 4 VIN = 3.8 V COUT = 10 µF IOUT = 1 mA 3.02 3.00 2.99 IGND (µA) 330 3.01 VOUT (V) VOUT (V) TPS78628 GROUND CURRENT vs JUNCTION TEMPERATURE 3 2.790 2 2.786 IOUT = 1.5 A 2.98 310 IOUT = 1 mA 2.782 1 2.
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TPS786xx www.ti.com SLVS389L – SEPTEMBER 2002 – REVISED OCTOBER 2010 TYPICAL CHARACTERISTICS (continued) TPS78630 ROOT MEAN SQUARED OUTPUT NOISE vs BYPASS CAPACITANCE TPS78628 DROPOUT VOLTAGE vs JUNCTION TEMPERATURE 80 80 600 VIN = 2.7 V COUT = 10 µF IOUT = 1.5 A 60 40 30 300 200 20 IOUT = 1.5 A COUT = 10 µF BW = 100 Hz to 100 kHz 10 0 0.001 µF 0.0047 µF 100 0.01 µF 1 10k 100k 1M TPS78630 RIPPLE REJECTION vs FREQUENCY VIN = 4 V COUT = 10 µF CNR = 0.1 µF 80 VIN = 4 V COUT = 2.
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TPS786xx SLVS389L – SEPTEMBER 2002 – REVISED OCTOBER 2010 www.ti.com TYPICAL CHARACTERISTICS (continued) TPS78630 DROPOUT VOLTAGE vs OUTPUT CURRENT TPS78625 POWER-UP/ POWER-DOWN 600 4.0 VOUT = 2.5 V RL = 1.6 Ω CNR = 0.01 µF 3.0 450 500 400 TJ = 125°C 400 VDO (mV) 2.5 2.0 1.5 TJ = 25°C 300 200 VIN TJ = −40°C 200 IOUT = 1.5 A COUT = 10 µF CNR = 0.01 µF 50 0 0 0 400 800 1200 1600 0 0 2000 200 400 600 800 1000 1200 1400 2.5 3.5 4.0 4.5 5.0 VIN (V) Figure 16. Figure 17.
PAGE 9
TPS786xx www.ti.com SLVS389L – SEPTEMBER 2002 – REVISED OCTOBER 2010 TYPICAL CHARACTERISTICS (continued) TPS78630 TYPICAL REGIONS OF STABILITY EQUIVALENT SERIES RESISTANCE (ESR) vs OUTPUT CURRENT START-UP 3 COUT = 10 µF VIN = 4 V, COUT = 10 µF, IIN = 1.5 A 2.75 2.50 Region of Instability 10 CNR = 0.0047 µF 2.25 1 Region of Stability Enable CNR = 0.001 µF 2 VOUT (V) ESR − Equivalent Series Resistance (Ω) 100 1.75 1.50 CNR = 0.01 µF 1.25 1 0.1 0.75 0.50 0.25 0.
PAGE 10
TPS786xx SLVS389L – SEPTEMBER 2002 – REVISED OCTOBER 2010 www.ti.com APPLICATION INFORMATION The TPS786xx 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, typically), and 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 24. VIN IN VOUT OUT TPS786xx 2.
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TPS786xx www.ti.com SLVS389L – SEPTEMBER 2002 – REVISED OCTOBER 2010 PROGRAMMING THE TPS78601 ADJUSTABLE LDO REGULATOR The approximate value of this capacitor can be calculated using Equation 3: (3 x 10−7) x (R 1 ) R 2) C1 + (R1 x R 2) (3) The output voltage of the TPS78601 adjustable regulator is programmed using an external resistor divider as shown in Figure 25.
PAGE 12
TPS786xx SLVS389L – SEPTEMBER 2002 – REVISED OCTOBER 2010 www.ti.com THERMAL INFORMATION 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 13
TPS786xx www.ti.com SLVS389L – SEPTEMBER 2002 – REVISED OCTOBER 2010 ESTIMATING JUNCTION TEMPERATURE 35 YJB: TJ = TB + YJB · PD 30 YJT and YJB (°C/W) Using the thermal metrics ΨJT and ΨJB, as shown in the Thermal Information table, the junction temperature can be estimated with corresponding formulas (given in Equation 6). For backwards compatibility, an older qJC,Top parameter is listed as well.
PAGE 14
TPS786xx SLVS389L – SEPTEMBER 2002 – REVISED OCTOBER 2010 www.ti.com REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision K (August, 2010) to Revision L • Page Corrected typo in Figure 28 ................................................................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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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.
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PACKAGE MATERIALS INFORMATION www.ti.com 4-Jun-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) TPS78601DCQRG4 SOT-223 DCQ 6 2500 330.0 12.4 TPS78601DRBR SON DRB 8 3000 330.0 TPS78601DRBT SON DRB 8 250 180.
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PACKAGE MATERIALS INFORMATION www.ti.com 4-Jun-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 10.6 15.6 4.9 16.0 24.0 Q2 TPS78628KTTT DDPAK/ TO-263 KTT 5 50 330.0 24.4 TPS78630DCQR SOT-223 DCQ 6 2500 330.0 12.4 7.1 7.45 1.88 8.0 12.0 Q3 TPS78630KTTT DDPAK/ TO-263 KTT 5 50 330.0 24.4 10.6 15.6 4.9 16.0 24.0 Q2 TPS78633DCQR SOT-223 DCQ 6 2500 330.0 12.4 7.1 7.
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PACKAGE MATERIALS INFORMATION www.ti.com 4-Jun-2014 Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS78618KTTR DDPAK/TO-263 KTT 5 500 367.0 367.0 45.0 TPS78618KTTRE3 DDPAK/TO-263 KTT 5 500 367.0 367.0 45.0 TPS78618KTTT DDPAK/TO-263 KTT 5 50 367.0 367.0 45.0 TPS78625DCQR SOT-223 DCQ 6 2500 358.0 335.0 35.0 TPS78625KTTR DDPAK/TO-263 KTT 5 500 367.0 367.0 45.0 TPS78625KTTT DDPAK/TO-263 KTT 5 50 367.0 367.0 45.
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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.