Data Sheet

ManualsBrandsUnbranded ManualsActive ComponentsLP2985IM5-3.0/NOPB PMIC - LDO voltage regulator Positive, fixed SOT 23 5

LP2985-N

www.ti.com

SNVS018V –MARCH 2000–REVISED JUNE 2013

LP2985-N Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and

DSBGA Packages

Designed for Use with Very Low ESR Output Capacitors

Check for Samples: LP2985-N

FEATURES

DESCRIPTION

The LP2985-N is a 150 mA, fixed-output voltage

• Ultra Low Dropout Voltage

regulator designed to provide ultra low-dropout and

• Ensured 150 mA Output Current

low noise in battery powered applications.

• Smallest Possible Size (SOT-23, DSBGA

Using an optimized VIP (Vertically Integrated PNP)

Packages)

process, the LP2985-N delivers unequalled

• Requires Minimum External Components

performance in all specifications critical to battery-

powered designs:

• Stable with Low-ESR Output Capacitor

• <1 µA Quiescent Current when Shut Down

Dropout Voltage: Typically 300 mV @ 150 mA load,

and 7 mV @ 1 mA load.

• Low Ground Pin Current at All Loads

• Output Voltage Accuracy 1% (A Grade)

Ground Pin Current: Typically 850 µA @ 150 mA

load, and 75 µA @ 1 mA load.

• High Peak Current Capability

• Wide Supply Voltage Range (16V Max)

Enhanced Stability: The LP2985-N is stable with

output capacitor ESR as low as 5 mΩ, which allows

• Low Z

OUT

: 0.3Ω Typical (10 Hz to 1 MHz)

the use of ceramic capacitors on the output.

• Overtemperature/Overcurrent Protection

Sleep Mode: Less than 1 µA quiescent current when

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

ON/OFF pin is pulled low.

• Custom Voltages Available

Smallest Possible Size: SOT-23 and DSBGA

packages use absolute minimum board space.

APPLICATIONS

Precision Output: 1% tolerance output voltages

• Cellular Phone

available (A grade).

• Palmtop/Laptop Computer

Low Noise: By adding a 10 nF bypass capacitor,

• Personal Digital Assistant (PDA)

output noise can be reduced to 30 µV (typical).

• Camcorder, Personal Stereo, Camera

Multiple voltage options, from 2.5V to 5.0V, are

available as standard products. Consult factory for

custom voltages.

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 (33 pages)

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LP2985-N www.ti.com SNVS018V – MARCH 2000 – REVISED JUNE 2013 LP2985-N Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and DSBGA Packages Designed for Use with Very Low ESR Output Capacitors Check for Samples: LP2985-N FEATURES DESCRIPTION • • • The LP2985-N is a 150 mA, fixed-output voltage regulator designed to provide ultra low-dropout and low noise in battery powered applications.
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LP2985-N SNVS018V – MARCH 2000 – REVISED JUNE 2013 www.ti.com BASIC APPLICATION CIRCUIT *ON/OFF input must be actively terminated. Tie to VIN if this function is not to be used. **Minimum capacitance is shown to ensure stability (may be increased without limit). Ceramic capacitor required for output (see APPLICATION HINTS). ***Reduces output noise (may be omitted if application is not noise critical). Use ceramic or film type with very low leakage current (see APPLICATION HINTS).
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LP2985-N www.ti.com SNVS018V – MARCH 2000 – REVISED JUNE 2013 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. ABSOLUTE MAXIMUM RATINGS (1) (2) Storage Temperature Range −65°C to +150°C Operating Junction Temperature Range −40°C to +125°C Lead Temp. (Soldering, 5 sec.) ESD Rating 260°C (3) 2 kV Power Dissipation (4) Internally Limited −0.
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LP2985-N SNVS018V – MARCH 2000 – REVISED JUNE 2013 www.ti.com ELECTRICAL CHARACTERISTICS(1) (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, CIN = 1 µF, COUT = 4.7 µF, VON/OFF = 2V.
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LP2985-N www.ti.com SNVS018V – MARCH 2000 – REVISED JUNE 2013 TYPICAL PERFORMANCE CHARACTERISTICS Unless otherwise specified: CIN = 1µF, COUT = 4.7µF, VIN = VOUT(NOM) +1, TA = 25°C, ON/OFF pin is tied to VIN. VOUT vs Temperature Short-Circuit Current Figure 3. Figure 4. Short-Circuit Current Short Circuit Current vs Output Voltage Figure 5. Figure 6. Ripple Rejection Ripple Rejection Figure 7. Figure 8.
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LP2985-N SNVS018V – MARCH 2000 – REVISED JUNE 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (continued) Unless otherwise specified: CIN = 1µF, COUT = 4.7µF, VIN = VOUT(NOM) +1, TA = 25°C, ON/OFF pin is tied to VIN. 6 Ripple Rejection Ripple Rejection Figure 9. Figure 10. Ripple Rejection Ripple Rejection Figure 11. Figure 12. Ripple Rejection Ripple Rejection Figure 13. Figure 14.
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LP2985-N www.ti.com SNVS018V – MARCH 2000 – REVISED JUNE 2013 TYPICAL PERFORMANCE CHARACTERISTICS (continued) Unless otherwise specified: CIN = 1µF, COUT = 4.7µF, VIN = VOUT(NOM) +1, TA = 25°C, ON/OFF pin is tied to VIN. Ripple Rejection Output Impedance vs Frequency Figure 15. Figure 16. Output Impedance vs Frequency Output Noise Density Figure 17. Figure 18. Output Noise Density Ground Pin vs Load Current Figure 19. Figure 20.
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LP2985-N SNVS018V – MARCH 2000 – REVISED JUNE 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (continued) Unless otherwise specified: CIN = 1µF, COUT = 4.7µF, VIN = VOUT(NOM) +1, TA = 25°C, ON/OFF pin is tied to VIN. 8 Dropout Voltage vs Temperature Input Current vs Pin Figure 21. Figure 22. GND Pin Current vs Temperature Instantaneous Short Circuit Current Figure 23. Figure 24. Load Transient Response Load Transient Response Figure 25. Figure 26.
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LP2985-N www.ti.com SNVS018V – MARCH 2000 – REVISED JUNE 2013 TYPICAL PERFORMANCE CHARACTERISTICS (continued) Unless otherwise specified: CIN = 1µF, COUT = 4.7µF, VIN = VOUT(NOM) +1, TA = 25°C, ON/OFF pin is tied to VIN. Load Transient Response Line Transient Response Figure 27. Figure 28. Line Transient Response Line Transient Response Figure 29. Figure 30. Line Transient Response Turn-On Time Figure 31. Figure 32.
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LP2985-N SNVS018V – MARCH 2000 – REVISED JUNE 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (continued) Unless otherwise specified: CIN = 1µF, COUT = 4.7µF, VIN = VOUT(NOM) +1, TA = 25°C, ON/OFF pin is tied to VIN. Turn-On Time Turn-On Time Figure 33. Figure 34. Turn-On Time Figure 35.
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LP2985-N www.ti.com SNVS018V – MARCH 2000 – REVISED JUNE 2013 APPLICATION HINTS EXTERNAL CAPACITORS Like any low-dropout regulator, the LP2985-N requires external capacitors for regulator stability. These capacitors must be correctly selected for good performance. Input Capacitor An input capacitor whose capacitance is ≥ 1 µF is required between the LP2985-N input and ground (the amount of capacitance may be increased without limit).
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LP2985-N SNVS018V – MARCH 2000 – REVISED JUNE 2013 www.ti.com Noise Bypass Capacitor Connecting a 10 nF capacitor to the Bypass pin significantly reduces noise on the regulator output. It should be noted that the capacitor is connected directly to a high-impedance circuit in the bandgap reference. Because this circuit has only a few microamperes flowing in it, any significant loading on this node will cause a change in the regulated output voltage.
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LP2985-N www.ti.com SNVS018V – MARCH 2000 – REVISED JUNE 2013 REVERSE INPUT-OUTPUT VOLTAGE The PNP power transistor used as the pass element in the LP2985-N has an inherent diode connected between the regulator output and input. During normal operation (where the input voltage is higher than the output) this diode is reverse-biased). VIN VOUT PNP GND Figure 37.
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LP2985-N SNVS018V – MARCH 2000 – REVISED JUNE 2013 www.ti.com REVISION HISTORY Changes from Revision U (April 2013) to Revision V • 14 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) LP2985AIM5-2.5/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 125 LAUA LP2985AIM5-2.7/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 125 LALA LP2985AIM5-2.
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PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 1-Nov-2013 Status (1) LP2985AIM5-6.1/NOPB Package Type Package Pins Package Drawing Qty ACTIVE SOT-23 DBV 5 1000 Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (°C) Device Marking Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 125 LF6A (4/5) LP2985AIM5X-2.5 NRND SOT-23 DBV 5 3000 TBD Call TI Call TI -40 to 125 LAUA LP2985AIM5X-2.
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PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 1-Nov-2013 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) LP2985AITL-3.3/NOPB ACTIVE DSBGA YZR 5 250 Green (RoHS & no Sb/Br) SNAGCU Level-1-260C-UNLIM LP2985AITLX-3.3/NOPB ACTIVE DSBGA YZR 5 3000 Green (RoHS & no Sb/Br) SNAGCU Level-1-260C-UNLIM LP2985AITP-2.
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PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 1-Nov-2013 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) LP2985IM5-2.5/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 125 LAUB LP2985IM5-2.7/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM LP2985IM5-2.
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PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 1-Nov-2013 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) LP2985IM5X-2.5/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 125 LAUB LP2985IM5X-2.7/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM LP2985IM5X-2.
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PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 1-Nov-2013 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) LP2985ITP-2.6/NOPB ACTIVE DSBGA YPB 5 250 Green (RoHS & no Sb/Br) SNAGCU Level-1-260C-UNLIM LP2985ITP-2.7/NOPB ACTIVE DSBGA YPB 5 250 Green (RoHS & no Sb/Br) SNAGCU Level-1-260C-UNLIM LP2985ITP-2.
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PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-2013 (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined.
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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) LP2985AIM5-2.5/NOPB SOT-23 DBV 5 1000 178.0 8.4 LP2985AIM5-2.7/NOPB SOT-23 DBV 5 1000 178.0 LP2985AIM5-2.8 SOT-23 DBV 5 1000 178.0 LP2985AIM5-2.8/NOPB SOT-23 DBV 5 1000 LP2985AIM5-2.9/NOPB SOT-23 DBV 5 W Pin1 (mm) Quadrant 3.2 3.2 1.4 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) LP2985AIM5-5.0/NOPB SOT-23 DBV 5 1000 178.0 8.4 LP2985AIM5-5.7/NOPB SOT-23 DBV 5 1000 178.0 8.4 LP2985AIM5-6.1/NOPB SOT-23 DBV 5 1000 178.0 LP2985AIM5X-2.5 SOT-23 DBV 5 3000 178.0 LP2985AIM5X-2.5/NOPB SOT-23 DBV 5 3000 LP2985AIM5X-2.6/NOPB SOT-23 DBV 5 LP2985AIM5X-2.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) LP2985IM5-2.9/NOPB SOT-23 DBV 5 1000 178.0 8.4 LP2985IM5-3.0/NOPB SOT-23 DBV 5 1000 178.0 8.4 LP2985IM5-3.1/NOPB SOT-23 DBV 5 1000 178.0 LP2985IM5-3.2/NOPB SOT-23 DBV 5 1000 178.0 LP2985IM5-3.3 SOT-23 DBV 5 1000 LP2985IM5-3.5/NOPB SOT-23 DBV 5 LP2985IM5-3.6 SOT-23 DBV 5 LP2985IM5-3.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) LP2985ITPX-3.3/NOPB DSBGA YPB 5 3000 178.0 8.4 LP2985ITPX-5.0/NOPB DSBGA YPB 5 3000 178.0 8.4 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 1.02 1.19 0.66 4.0 8.0 Q1 1.02 1.19 0.66 4.0 8.0 Q1 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LP2985AIM5-2.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LP2985AIM5-4.5 SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2985AIM5-4.5/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2985AIM5-5.0 SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2985AIM5-5.0/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2985AIM5-5.7/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2985AIM5-6.1/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LP2985IM5-2.7/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2985IM5-2.8/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2985IM5-2.9/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2985IM5-3.0/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2985IM5-3.1/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2985IM5-3.2/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LP2985ITPX-3.0/NOPB DSBGA YPB 5 3000 210.0 185.0 35.0 LP2985ITPX-3.3/NOPB DSBGA YPB 5 3000 210.0 185.0 35.0 LP2985ITPX-5.0/NOPB DSBGA YPB 5 3000 210.0 185.0 35.
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MECHANICAL DATA YPB0005 D 0.5±0.045 E TPA05XXX (Rev C) D: Max = 1.159 mm, Min =1.098 mm E: Max = 0.981 mm, Min = 0.92 mm 4215098/A NOTES: A. All linear dimensions are in millimeters. Dimensioning and tolerancing per ASME Y14.5M-1994. B. This drawing is subject to change without notice. www.ti.
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MECHANICAL DATA YZR0005xxx D 0.600±0.075 E TLA05XXX (Rev C) D: Max = 1.464 mm, Min =1.403 mm E: Max = 1.095 mm, Min =1.034 mm 4215043/A NOTES: A. All linear dimensions are in millimeters. Dimensioning and tolerancing per ASME Y14.5M-1994. B. This drawing is subject to change without notice. www.ti.
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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.