Datasheet

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LP2989LV

www.ti.com

SNVS086J –MAY 2000–REVISED APRIL 2013

LP2989LV Micropower 500 mA Low Noise Low Dropout Regulator for Applications with

Output Voltages < 2V

Designed for Use with Very Low ESR Output Capacitors

Check for Samples: LP2989LV

FEATURES

DESCRIPTION

The LP2989LV is a 500 mA fixed-output voltage

• Ultra Low Dropout Voltage

regulator designed to provide high performance and

• Ensured 500 mA Continuous Output Current

low noise in applications requiring output voltages <

• Very Low Output Noise with External

2V.

Capacitor

Output noise can be reduced to 18µV (typical) by

• SOIC-8, VSSOP, 8 Lead WSON Surface Mount

connecting an external 10 nF capacitor to the bypass

Packages

pin.

• <0.8 μA Quiescent Current when Shut Down

Using an optimized VIP (Vertically Integrated PNP)

• Low Ground Pin Current at All Loads

process, the LP2989LV delivers superior

performance:

• 0.75% Output Voltage Accuracy (“A” Grade)

• High Peak Current Capability (800 mA Typical)

Ground Pin Current: Typically 3 mA @ 500 mA load,

and 110 µA @ 100 µA load.

• Wide Supply Voltage Range (16V Max)

Sleep Mode: The LP2989LV draws less than 0.8 μA

• Overtemperature/Overcurrent Protection

quiescent current when shutdown pin is pulled low.

• −40°C to +125°C Junction Temperature Range

Error Flag: The built-in error flag goes low when the

APPLICATIONS

output drops approximately 5% below nominal.

• Notebook/Desktop PC

Precision Output: Ensured output voltage accuracy is

0.75% (“A” grade) and 1.25% (standard grade) at

• PDA/Palmtop Computer

room temperature.

• Wireless Communication Terminals

For output voltages ≥ 2V, see LP2989 data sheet.

• SMPS Post-Regulator

Block Diagram

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.

2All 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 (17 pages)

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LP2989LV www.ti.com SNVS086J – MAY 2000 – REVISED APRIL 2013 LP2989LV Micropower 500 mA Low Noise Low Dropout Regulator for Applications with Output Voltages < 2V Designed for Use with Very Low ESR Output Capacitors Check for Samples: LP2989LV FEATURES DESCRIPTION • • • The LP2989LV is a 500 mA fixed-output voltage regulator designed to provide high performance and low noise in applications requiring output voltages < 2V.
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LP2989LV SNVS086J – MAY 2000 – REVISED APRIL 2013 www.ti.com Connection Diagrams 1 8 N/C 2 7 ERROR GROUND 3 6 SENSE INPUT 4 5 OUTPUT GROUND Figure 1. SOIC-8/ VSSOP Package Surface Mount Packages See Package Drawing Numbers D0008A/DGK0008A BYPASS SHUTDOWN Figure 2. 8 Lead WSON Surface Mount Package (Top View) See Package Number NGN0008A Basic Application Circuit *Capacitance values shown are minimum required to assure stability, but may be increased without limit.
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LP2989LV www.ti.com SNVS086J – MAY 2000 – REVISED APRIL 2013 ABSOLUTE MAXIMUM RATINGS (1) (2) Storage Temperature Range −65°C to +150°C Operating Junction Temperature Range −40°C to +125°C Lead Temperature (Soldering, 5 seconds) 260°C ESD Rating (3) 2 kV Power Dissipation (4) Internally Limited −0.3V to +16V Input Supply Voltage (Survival) Input Supply Voltage (Operating) 2.1V to +16V −0.3V to +6V Sense Pin Output Voltage (Survival) (5) −0.
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LP2989LV SNVS086J – MAY 2000 – REVISED APRIL 2013 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Limits in standard typeface are for TJ = 25°C, and limits in boldface type apply over the full operating temperature range. Unless otherwise specified: VIN = VO(NOM) + 1V, IL = 1 mA, COUT = 10 µF, CIN = 2.2 µF, VS/D = 2V. Symbol IGND Parameter Ground Pin Current Conditions IL = 100 µA IL = 200 mA IL = 500 mA Typical LP2989AI-X.X Min 110 1 3 (1) Max LP2989I-X.
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LP2989LV www.ti.com SNVS086J – MAY 2000 – REVISED APRIL 2013 TYPICAL PERFORMANCE CHARACTERISTICS Unless otherwise specified: TA = 25°C, COUT = 10 µF, CIN = 2.2 µF, S/D is tied to VIN, VIN = VO(NOM) + 1V, IL = 1 mA, VOUT = 1.8V. IGND vs Shutdown IGND vs Shutdown Figure 3. Figure 4. IGND vs Shutdown IGND vs Shutdown Figure 5. Figure 6. Ground Pin Current vs Load Current GND Pin Current vs Temperature and Load Figure 7. Figure 8.
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LP2989LV SNVS086J – MAY 2000 – REVISED APRIL 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (continued) Unless otherwise specified: TA = 25°C, COUT = 10 µF, CIN = 2.2 µF, S/D is tied to VIN, VIN = VO(NOM) + 1V, IL = 1 mA, VOUT = 1.8V. Short Circuit Current vs Temperature Short Circuit Current Figure 9. Figure 10. Short Circuit Current Minimum VIN vs Load Current Figure 11. Figure 12. Typical Temperature vs VOUT (LP2989-1.8) 1.81 VOUT (V) 1.805 1.8 1.795 1.
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LP2989LV www.ti.com SNVS086J – MAY 2000 – REVISED APRIL 2013 APPLICATION HINTS WSON Package Devices The LP2989LV is offered in the 8 lead WSON surface mount package to allow for increased power dissipation compared to the SOIC-8 and VSSOP. For details on thermal performance as well as mounting and soldering specifications, refer to Application Note AN-1187 (SNOA401Q). For output voltages ≥ 2V, see LP2989 data sheet.
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LP2989LV SNVS086J – MAY 2000 – REVISED APRIL 2013 www.ti.com The output capacitor must be located not more than 0.5" from the output pin and returned to a clean analog ground. Noise Bypass Capacitor: Connecting a 10 nF capacitor to the Bypass pin significantly reduces noise on the regulator output. However, the capacitor is connected directly to a high-impedance circuit in the bandgap reference.
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LP2989LV www.ti.com SNVS086J – MAY 2000 – REVISED APRIL 2013 Shutdown Input Operation The LP2989LV is shut off by driving the Shutdown input low, and turned on by pulling it high. If this feature is not to be used, the Shutdown input should be tied to VIN to keep the regulator output on at all times.
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LP2989LV SNVS086J – MAY 2000 – REVISED APRIL 2013 www.ti.com REVISION HISTORY Changes from Revision I (April 2013) to Revision J • 10 Page Changed layout of National Data Sheet to TI format ............................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-2013 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (°C) Device Marking (4/5) LP2989AILD-1.8/NOPB ACTIVE WSON NGN 8 1000 Green (RoHS & no Sb/Br) SN Level-3-260C-168 HR -40 to 125 L01EA LP2989AILDX-1.8/NOPB ACTIVE WSON NGN 8 4500 Green (RoHS & no Sb/Br) SN Level-3-260C-168 HR LP2989AIM-1.
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PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-2013 (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 23-Sep-2013 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) W Pin1 (mm) Quadrant LP2989AILD-1.8/NOPB WSON NGN 8 1000 178.0 12.4 4.3 4.3 1.3 8.0 12.0 Q1 LP2989AILDX-1.8/NOPB WSON NGN 8 4500 330.0 12.4 4.3 4.3 1.3 8.0 12.0 Q1 LP2989AIMX-1.8/NOPB SOIC D 8 2500 330.0 12.4 6.5 5.4 2.0 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LP2989AILD-1.8/NOPB WSON NGN 8 1000 213.0 191.0 55.0 LP2989AILDX-1.8/NOPB WSON NGN 8 4500 367.0 367.0 35.0 LP2989AIMX-1.8/NOPB SOIC D 8 2500 367.0 367.0 35.0 LP2989ILD-1.8/NOPB WSON NGN 8 1000 213.0 191.0 55.0 LP2989ILDX-1.8/NOPB WSON NGN 8 4500 367.0 367.0 35.0 LP2989IMX-1.
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MECHANICAL DATA NGN0008A LDC08A (Rev B) www.ti.
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