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LP2980-N

www.ti.com

SNOS733M –APRIL 2000–REVISED JUNE 2013

LP2980-N Micropower 50 mA Ultra Low-Dropout Regulator In SOT-23 Package

Check for Samples: LP2980-N

FEATURES

DESCRIPTION

The LP2980-N is a 50 mA, fixed-output voltage

• Ultra Low Dropout Voltage

regulator designed specifically to meet the

• Output Voltage Accuracy 0.5% (A Grade)

requirements of battery-powered applications.

• Ensured 50 mA Output Current

Using an optimized VIP (Vertically Integrated PNP)

• Requires Only 1 μF External Capacitance

process, the LP2980-N delivers unequaled

• < 1 μA Quiescent Current When Shutdown

performance in all specifications critical to battery-

powered designs:

• Low Ground Pin Current at all Load Currents

Dropout Voltage. Typically 120 mV @ 50 mA load,

• High Peak Current Capability (150 mA Typical)

and 7 mV @ 1 mA load.

• Wide Supply Voltage Range (16V Max)

Ground Pin Current. Typically 375 μA @ 50 mA

• Fast Dynamic Response to Line and Load

load, and 80 μA @ 1 mA load.

• Low Z

OUT

Over Wide Frequency Range

Sleep Mode. Less than 1 μA quiescent current when

• Over-Temperature and Over-Current

ON/OFF pin is pulled low.

Protection

Minimum Part Count. Requires only 1 μF of external

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

capacitance on the regulator output.

APPLICATIONS

Precision Output. 0.5% tolerance output voltages

available (A grade).

• Cellular Phone

• Palmtop/Laptop Computer

5.0V, 4.7V, 3.3V, 3.0V and 2.5V versions available as

standard products.

• Personal Digital Assistant (PDA)

• Camcorder, Personal Stereo, Camera

Block Diagram

Figure 1.

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 (24 pages)

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LP2980-N www.ti.com SNOS733M – APRIL 2000 – REVISED JUNE 2013 LP2980-N Micropower 50 mA Ultra Low-Dropout Regulator In SOT-23 Package Check for Samples: LP2980-N FEATURES DESCRIPTION • • • • • • • • • • • The LP2980-N is a 50 mA, fixed-output voltage regulator designed specifically to meet the requirements of battery-powered applications. 1 2 • Ultra Low Dropout Voltage Output Voltage Accuracy 0.
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LP2980-N SNOS733M – APRIL 2000 – REVISED JUNE 2013 www.ti.com Connection Diagram Top View Figure 2. 5-Lead SOT-23 Package See Package Number DBV0005A PIN DESCRIPTIONS Name Pin Number Function VIN 1 Input Voltage GND 2 Common Ground (device substrate) ON/OFF 3 Logic high enable input N/C 4 Post package trim - do not connect to this pin VOUT 5 Regulated output voltage These devices have limited built-in ESD protection.
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LP2980-N www.ti.com SNOS733M – APRIL 2000 – REVISED JUNE 2013 ABSOLUTE MAXIMUM RATINGS (1) (2) −65°C to +150°C Storage Temperature Range Operating Junction Temperature Lead Temperature −40°C to +125°C Range (Soldering, 5 sec.) 260°C ESD Rating (3) Power Dissipation 2 kV (4) Internally Limited −0.3V to +16V Input Supply Voltage (Survival) Input Supply Voltage (Operating) 2.1V to +16V −0.3V to +16V Shutdown Input Voltage (Survival) Output Voltage (Survival) (5) −0.
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LP2980-N SNOS733M – APRIL 2000 – REVISED JUNE 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 = 1 μF, VON/OFF = 2V.
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LP2980-N www.ti.com SNOS733M – APRIL 2000 – REVISED JUNE 2013 TYPICAL PERFORMANCE CHARACTERISTICS Unless otherwise specified: TA = 25°C, VIN = VO(NOM) + 1V, COUT = 2.2 μF, all voltage options, ON/OFF pin tied to VIN. Output Voltage vs Temperature Output Voltage vs Temperature Figure 4. Figure 5. Dropout Characteristics Output Voltage vs Temperature Figure 6. Figure 7. Dropout Characteristics Dropout Characteristics Figure 8. Figure 9.
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LP2980-N SNOS733M – APRIL 2000 – REVISED JUNE 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (continued) Unless otherwise specified: TA = 25°C, VIN = VO(NOM) + 1V, COUT = 2.2 μF, all voltage options, ON/OFF pin tied to VIN. Dropout Voltage vs Temperature Dropout Voltage vs Load Current Figure 10. Figure 11. Ground Pin Current vs Temperature Ground Pin Current vs Load Current Figure 12. Figure 13. Input Current vs VIN Input Current vs VIN Figure 14. 6 Figure 15.
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LP2980-N www.ti.com SNOS733M – APRIL 2000 – REVISED JUNE 2013 TYPICAL PERFORMANCE CHARACTERISTICS (continued) Unless otherwise specified: TA = 25°C, VIN = VO(NOM) + 1V, COUT = 2.2 μF, all voltage options, ON/OFF pin tied to VIN. Line Transient Response Line Transient Response Figure 16. Figure 17. Load Transient Response Load Transient Response Figure 18. Figure 19. Load Transient Response Load Transient Response Figure 20. Figure 21.
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LP2980-N SNOS733M – APRIL 2000 – REVISED JUNE 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (continued) Unless otherwise specified: TA = 25°C, VIN = VO(NOM) + 1V, COUT = 2.2 μF, all voltage options, ON/OFF pin tied to VIN. 8 Short Circuit Current Instantaneous Short Circuit Current vs Temperature Figure 22. Figure 23. Short Circuit Current Output Impedance vs Frequency Figure 24. Figure 25. Output Impedance vs Frequency Output Noise Density Figure 26. Figure 27.
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LP2980-N www.ti.com SNOS733M – APRIL 2000 – REVISED JUNE 2013 TYPICAL PERFORMANCE CHARACTERISTICS (continued) Unless otherwise specified: TA = 25°C, VIN = VO(NOM) + 1V, COUT = 2.2 μF, all voltage options, ON/OFF pin tied to VIN. Ripple Rejection Input to Output Leakage vs Temperature Figure 28. Figure 29. Output Reverse Leakage vs Temperature Turn-On Waveform Figure 30. Figure 31. Turn-Off Waveform ON/OFF Pin Current vs VON/OFF Figure 32. Figure 33.
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LP2980-N SNOS733M – APRIL 2000 – REVISED JUNE 2013 www.ti.com APPLICATION HINTS OUTPUT CAPACITOR Like any low-dropout regulator, the LP2980-N requires an output capacitor to maintain regulator loop stability. This capacitor must be selected to meet the requirements of minimum capacitance and equivalent series resistance (ESR) range. It is not difficult to find capacitors which meet the criteria of the LP2980-N, as the acceptable capacitance and ESR ranges are wider than for most other LDOs.
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LP2980-N www.ti.com SNOS733M – APRIL 2000 – REVISED JUNE 2013 Multilayer ceramic capacitors that have been verified as suitable for use with the LP2980-N are shown in Table 2. Table 2. Surface-Mount Multilayer Ceramic Capacitor Selection Guide 2.2 μF Surface-Mount Ceramic Manufacturer Part Number Tokin 1E225ZY5U-C203 Murata GRM42-6Y5V225Z16 4.7 μF Surface-Mount Ceramic Manufacturer Part Number Tokin 1E475ZY5U-C304 Figure 34. 1 μF ESR Range Figure 35. 2.2 μF ESR Range Figure 36.
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LP2980-N SNOS733M – APRIL 2000 – REVISED JUNE 2013 www.ti.com VIN VOUT PNP GND Figure 37. LP2980 Reverse Current Path However, if the input voltage is more than a VBE below the output voltage, this diode will turn ON and current will flow into the regulator output. In such cases, a parasitic SCR can latch which will allow a high current to flow into the VIN pin and out the ground pin, which can damage the part.
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LP2980-N www.ti.com SNOS733M – APRIL 2000 – REVISED JUNE 2013 Increasing Output Current Figure 39. 5V/400mA Regulator The LP2980-N can be used to control higher-current regulators, by adding an external PNP pass device. With the PNP transistors shown in Figure 39, the output current can be as high as 400 mA, as long as the input voltage is held within the Safe Operation Boundary Curves shown below in Figure 40. To ensure regulation, the minimum input voltage of this regulator is 6V.
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LP2980-N SNOS733M – APRIL 2000 – REVISED JUNE 2013 www.ti.com Figure 41. 5V to 3.3V @ 3A Converter With limited input voltage range, the LP2980-N can control a 3.3V, 3A regulator with the use of a high currentgain external PNP pass transistor as shown in Figure 41. If the regulator is to be loaded with the full 3A, heat sinking will be required on the pass transistor to keep it within its rated temperature range. Refer to Figure 42 .
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LP2980-N www.ti.com SNOS733M – APRIL 2000 – REVISED JUNE 2013 REVISION HISTORY Changes from Revision L (April 2013) to Revision M • 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) LP2980AIM5-2.5 NRND SOT-23 DBV 5 1000 TBD Call TI Call TI -40 to 125 L0NA LP2980AIM5-2.5/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 125 L0NA LP2980AIM5-3.
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PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 1-Nov-2013 Status (1) LP2980IM5-3.0/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 L02B (4/5) LP2980IM5-3.3 NRND SOT-23 DBV 5 1000 TBD Call TI Call TI -40 to 125 L00B LP2980IM5-3.
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PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-2013 TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
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PACKAGE MATERIALS INFORMATION www.ti.com 29-Mar-2014 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ B0 (mm) K0 (mm) P1 (mm) LP2980AIM5-2.5 SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2980AIM5-2.5/NOPB SOT-23 DBV 5 1000 178.0 LP2980AIM5-3.0 SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 8.4 3.2 3.2 1.4 4.0 8.0 LP2980AIM5-3.0/NOPB SOT-23 DBV 5 1000 Q3 178.0 8.4 3.2 3.2 1.4 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 29-Mar-2014 Device Package Package Pins Type Drawing LP2980AIM5X-5.0/NOPB SOT-23 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2980IM5-2.5/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2980IM5-3.0 SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2980IM5-3.0/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.
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PACKAGE MATERIALS INFORMATION www.ti.com 29-Mar-2014 Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LP2980AIM5-2.5 SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2980AIM5-2.5/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2980AIM5-3.0 SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2980AIM5-3.0/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2980AIM5-3.3 SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2980AIM5-3.3/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.
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