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LP2983

www.ti.com

SNVS170C –OCTOBER 2001–REVISED APRIL 2013

LP2983 Micropower 150 mA Voltage Regulator in SOT-23 Package

For Output Voltages ≤ 1.2V Designed for Use with Very Low ESR Output Capacitors

Check for Samples: LP2983

FEATURES

DESCRIPTION

The LP2983 is a 150 mA, fixed-output voltage

• Guaranteed 150 mA Output Current

regulator designed to provide tight voltage regulation

• Smallest Possible Size (SOT-23 Package)

in applications with output voltages ≤ 1.2V.

• Requires Minimum External Components

Using an optimized VIP™ (Vertically Integrated PNP)

• Stable with Low-ESR Output Capacitor

process, the LP2983 delivers unequaled performance

• Low Ground Pin Current at All Loads

in all critical specifications:

• Output Voltage Accuracy 1% (A Grade)

Ground Pin Current: Typically 825 µA @ 150 mA

load, and 75 µA @ 1 mA load.

• High Peak Current Capability

• Wide Supply Voltage Range (16V Max)

Enhanced Stability: The LP2983 is stable with

output capacitor ESR down to zero, which allows the

• Low Z

OUT

: 0.3Ω Typical (10 Hz to 1 MHz)

use of ceramic capacitors on the output.

• Overtemperature/Overcurrent Protection

Smallest Possible Size: SOT-23 package uses

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

absolute minimum board space.

APPLICATIONS

Precision Output: 1% tolerance output voltages

available (A grade).

• Cellular Phone

• Palmtop/Laptop Computer

• Personal Digital Assistant (PDA)

• Camcorder, Personal Stereo, Camera

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.

2VIP is a trademark of Texas Instruments.

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 (18 pages)

PAGE 1
LP2983 www.ti.com SNVS170C – OCTOBER 2001 – REVISED APRIL 2013 LP2983 Micropower 150 mA Voltage Regulator in SOT-23 Package For Output Voltages ≤ 1.2V Designed for Use with Very Low ESR Output Capacitors Check for Samples: LP2983 FEATURES DESCRIPTION • • • • • • • • • • • The LP2983 is a 150 mA, fixed-output voltage regulator designed to provide tight voltage regulation in applications with output voltages ≤ 1.2V.
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LP2983 SNVS170C – OCTOBER 2001 – REVISED APRIL 2013 www.ti.com Connection Diagram Figure 1. 5-Lead Small Outline Package (SOT-23) Pin Functions Pin Descriptions Pin Pin Number VIN 1 Input Voltage Function GND 2 Common Ground (device substrate) ON/OFF 3 Logic high enable input ESR 4 Low side connection for low-ESR output capacitors VOUT 5 Regulated Output Voltage These devices have limited built-in ESD protection.
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LP2983 www.ti.com SNVS170C – OCTOBER 2001 – REVISED APRIL 2013 Electrical Characteristics 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 = 2.2 µF, VON/OFF = 2V. LP2983AI-X.
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LP2983 SNVS170C – OCTOBER 2001 – REVISED APRIL 2013 www.ti.com Typical 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).
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LP2983 www.ti.com SNVS170C – OCTOBER 2001 – REVISED APRIL 2013 Typical Performance Characteristics Unless otherwise specified: CIN = 1µF, COUT = 2.2µF, VIN = VOUT(NOM) +1, TA = 25°C, ON/OFF pin is tied to VIN. LP2983 Tempco Minimum Input Voltage vs Temperature Figure 2. Figure 3. Input Current vs VIN (0mA Load) Input Current vs VIN (1mA Load) Figure 4. Figure 5. Input Current vs VIN (50mA & 150mA Loads) GND Pin vs Load Current Figure 6. Figure 7.
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LP2983 SNVS170C – OCTOBER 2001 – REVISED APRIL 2013 www.ti.com Typical Performance Characteristics (continued) Unless otherwise specified: CIN = 1µF, COUT = 2.2µF, VIN = VOUT(NOM) +1, TA = 25°C, ON/OFF pin is tied to VIN. 6 GND Pin vs Temperature and Load Line Transient Response ΔVIN = 1V, Load = 1mA Figure 8. Figure 9. Line Transient Response ΔVIN = 1V, Load = 150mA Line Transient Response ΔVIN = 13.8V, Load = 1mA Figure 10. Figure 11. Line Transient Response ΔVIN = 13.
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LP2983 www.ti.com SNVS170C – OCTOBER 2001 – REVISED APRIL 2013 Typical Performance Characteristics (continued) Unless otherwise specified: CIN = 1µF, COUT = 2.2µF, VIN = VOUT(NOM) +1, TA = 25°C, ON/OFF pin is tied to VIN. Ripple Rejection COUT = 2.2µF Turn-On Time Figure 14. Figure 15. Short Circuit Current vs Temperature Short Circuit Current, VIN = 16V Figure 16. Figure 17. Short Circuit Current, VIN = 2.8V Short Circuit Current, VIN = 6V Figure 18. Figure 19.
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LP2983 SNVS170C – OCTOBER 2001 – REVISED APRIL 2013 www.ti.com Typical Performance Characteristics (continued) Unless otherwise specified: CIN = 1µF, COUT = 2.2µF, VIN = VOUT(NOM) +1, TA = 25°C, ON/OFF pin is tied to VIN. Load Transient Response COUT = 4.7µF Load Transient Response COUT = 2.2µF Figure 20. Figure 21. Application Hints EXTERNAL CAPACITORS Like any low-dropout regulator, the LP2983 requires external capacitors for regulator stability.
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LP2983 www.ti.com SNVS170C – OCTOBER 2001 – REVISED APRIL 2013 COUT = 2.2µF Ceramic to ESR Pin Figure 22. The LP2983 requires a minimum of 2.2 µF on the output (output capacitor size can be increased without limit). It is important to remember that capacitor tolerance and variation with temperature must be taken into consideration when selecting an output capacitor so that the minimum required amount of output capacitance is provided over the full operating temperature range.
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LP2983 SNVS170C – OCTOBER 2001 – REVISED APRIL 2013 www.ti.com REVERSE INPUT-OUTPUT VOLTAGE The internal PNP power transistor used as the pass element in the LP2983 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 (See Figure 23). LP2983 VIN VOUT PNP GND Figure 23.
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LP2983 www.ti.com SNVS170C – OCTOBER 2001 – REVISED APRIL 2013 REVISION HISTORY Changes from Revision B (April 2013) to Revision C • 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) LP2983AIM5-1.0/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 125 LENA LP2983AIM5-1.2/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 125 LELA LP2983AIM5X-1.
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PACKAGE OPTION ADDENDUM www.ti.com (4) 1-Nov-2013 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. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that 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) LP2983AIM5-1.0/NOPB SOT-23 DBV 5 1000 178.0 8.4 LP2983AIM5-1.2/NOPB B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3.2 3.2 1.4 4.0 8.0 Q3 SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2983AIM5X-1.0/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.
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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) LP2983AIM5-1.0/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2983AIM5-1.2/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2983AIM5X-1.0/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LP2983AIM5X-1.2/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LP2983IM5-1.0/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2983IM5-1.
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