LP8345CLDX-ADJ

LP8345 NSC | Alldatasheet

Document overview

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Technical content

Features

n ±1.5% Typical VOUT tolerance n 210mV Typical Dropout @ 500mA (VO = 5V) n Wide Operating Range 2.7V to 10V n Internal 500mA PMOS Output Transistor n 19µA Typical Quiescent Current n Thermal Overload Limiting n Foldback Current Limiting n Zener Trimmed Bandgap Reference n Space saving LLP package n Temperature Range — LP8345C 0˚C to 125˚C — LP8345I −40˚C to 125˚C

Applications

n Battery Powered Electronics n Portable Instrumentation Typical Applications Fixed VOUT 20064801 Adjustable VOUT 20064802 October 2003 LP8345 Low Dropout, Low IQ, 500mA CMOS Linear Regulator © 2003 National Semiconductor Corporation DS200648 www.national.com

Ordering Information

Package Part Number Package Marking Transport Media NSC Drawing 6-Pin LLP LP8345CLD-ADJ L045B 1k Units Tape and Reel LDE06A LP8345CLDX-ADJ 4.5k Units Tape and Reel LP8345CLD-1.8 L046B 1k Units Tape and Reel LP8345CLDX-1.8 4.5k Units Tape and Reel LP8345CLD-2.5 L047B 1k Units Tape and Reel LP8345CLDX-2.5 4.5k Units Tape and Reel LP8345CLD-3.3 L048B 1k Units Tape and Reel LP8345CLDX-3.3 4.5k Units Tape and Reel LP8345CLD-5.0 L049B 1k Units Tape and Reel LP8345CLDX-5.0 4.5k Units Tape and Reel LP8345ILD-ADJ L073B 1k Units Tape and Reel LP8345ILDX-ADJ 4.5k Units Tape and Reel LP8345ILD-1.8 L074B 1k Units Tape and Reel LP8345ILDX-1.8 4.5k Units Tape and Reel LP8345ILD-2.5 L075B 1k Units Tape and Reel LP8345ILDX-2.5 4.5k Units Tape and Reel LP8345ILD-3.3 L076B 1k Units Tape and Reel LP8345ILDX-3.3 4.5k Units Tape and Reel LP8345ILD-5.0 L077B 1k Units Tape and Reel LP8345ILDX-5.0 4.5k Units Tape and Reel 3-Pin DPAK LP8345CDT-1.8 LP8345CDT-1.8 75 Units/Rail TD03B LP8345CDTX-1.8 2.5k Units Tape and Reel LP8345CDT-2.5 LP8345CDT-2.5 75 Units/Rail LP8345CDTX-2.5 2.5k Units Tape and Reel LP8345CDT-3.3 LP8345CDT-3.3 75 Units/Rail LP8345CDTX-3.3 2.5k Units Tape and Reel LP8345CDT-5.0 LP8345CDT-5.0 75 Units/Rail LP8345CDTX-5.0 2.5k Units Tape and Reel LP8345IDT-1.8 LP8345IDT-1.8 75 Units/Rail LP8345IDTX-1.8 2.5k Units Tape and Reel LP8345IDT-2.5 LP8345IDT-2.5 75 Units/Rail LP8345IDTX-2.5 2.5k Units Tape and Reel LP8345IDTX-3.3 LP8345IDTX-3.3 75 Units/Rail LP8345IDT-3.3 2.5k Units Tape and Reel LP8345IDTX-5.0 LP8345IDTX-5.0 75 Units/Rail LP8345IDT-5.0 2.5k Units Tape and Reel LP8345 www.national.com 2

Note: VIN Pins (Pin1&6 ) must be connected together externally for full 500mA operation (250mA max per pin). VOUT Sense (Pin 5) must be connected to V OUT (Pin 4). T0-252 20064805 Top View LP8345 www.national.com3

Absolute Maximum Ratings(Notes 1, If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. V IN,V OUT,V OUT Sense, ADJ −0.3V to 12V Storage Temperature Range −65˚C to 160˚C Junction Temperature (T J) 150˚C Power Dissipation (Note 3) ESD Rating Human Body Model (Note 6) 2kV Machine Model 200V Operating Ratings(Notes 1, 2) Supply Voltage 2.7 to 10V Temperature Range LP8345C 0˚C to 125˚C LP8345I −40˚C to 125˚C Unless otherwise specified all limits guaranteed for V IN =V O+ 1V, CIN =C OUT = 10µF, T J = 25˚C. Boldface limits apply over the full operating temperature range of T J = 0˚C to 125˚C Symbol Parameter Conditions Min (Note 5) Typ (Note 4) Max (Note 5) Units VIN Input Voltage LP8345-ADJ,1.8, 2.5 LP8345-3.3, 5.0 2.7 10 10 V VOUT Output Voltage LP8345-ADJ, ADJ = OUT IOUT = 10mA, V IN = 2.7V, T J = 25˚C 100µA ≤IOUT≤ 500mA, 2.7V ≤VIN≤VOUT +4V 1.231 1.213 1.250 1.269 1.288 V LP8345-1.8 IOUT = 10mA, V IN = 2.8V, T J = 25˚C 100µA ≤IOUT ≤500mA, 2.8V ≤VIN≤6V 1.773 1.746 1.800 1.827 1.854 V LP8345-2.5 IOUT = 10mA, V IN = 3.5V, T J = 25˚C 100µA ≤IOUT ≤500mA, 3.5V ≤VIN ≤6.5V 2.463 2.425 2.500 2.538 2.575 V LP8345-3.3 IOUT = 10mA, V IN = 4.3V T J = 25˚C 100µA ≤IOUT ≤500mA, 4.3V ≤VIN ≤7.5V 3.250 3.201 3.300 3.350 3.399 V LP8345-5.0 IOUT = 10mA, V IN = 6V, T J = 25˚C 100µA ≤IOUT ≤500mA, 6V ≤VIN ≤9V 4.925 4.850 5.000 5.075 5.150 V ∆VO Load Regulation LP8345-ADJ, ADJ=OUT IOUT = 1mA to 500mA, V IN = 2.7V 6 20 mV LP8345-1.8 IOUT = 1mA to 500mA, V IN = 2.8V 7 20 LP8345-2.5 IOUT = 1mA to 500mA, V IN = 3.5V 9 30 LP8345-3.3 IOUT = 1mA to 500mA, V IN = 4.3V 12 35 LP8345-5.0 IOUT = 1mA to 500mA, V IN =6 V 1 4 40 ∆VO Line Regulation V OUT + 0.5V ≤VIN ≤10V, IOUT = 25mA (Note 7) 4 15 mV VIN −V O Dropout Voltage (Note 7) (Note 8) LP8345-2.5 IOUT = 500mA 335 650 mVLP8345-3.3 LP8345-ADJ, VOUT = 3.3V, I OUT = 500mA 270 500 LP8345-5.0 IOUT = 500mA 210 400 IQ Quiescent Current V IN ≤10V 19 50 µA Minimum Load Current V IN −V OUT ≤4V 100 µA LP8345 www.national.com 4

Unless otherwise specified all limits guaranteed for V IN =V O+ 1V, CIN =C OUT = 10µF, T J = 25˚C. Boldface limits apply over the full operating temperature range of T J = 0˚C to 125˚C Symbol Parameter Conditions Min (Note 5) Typ (Note 4) Max (Note 5) Units ILIMIT Foldback Current Limit V IN −V OUT >5V 450 mAVIN −V OUT <4V 1200 Ripple Rejection Ratio V IN (dc) = V OUT +2 V VIN (ac) = 1V P-P @ 120Hz 48 55 dB TSD Thermal Shutdown Temp. Thermal Shutdown Hyst. 160 ADJ Input Leakage Current V ADJ = 1.5V or 0V ±0.01 ±100 nA VOUT Leakage Current LP8345-ADJ ADJ = OUT, V OUT = 2V, V IN = 10V 10 µA LP8345-1.8, VOUT = 2.5V, V IN = 10V 10 LP8345-2.5, VOUT = 3.5V, V IN = 10V 10 LP8345-3.3, VOUT = 4V, VIN = 10V 10 LP8345-5.0, VOUT = 6V, VIN = 10V 10 en Output Noise 10Hz to 10kHz, R L =1 kΩ,C OUT = 10µF 250 µVrms Unless otherwise specified all limits guaranteed for V IN =V O+ 1V, CIN =C OUT = 10µF, T J = 25˚C. Boldface limits apply over the full operating temperature range of T J = −40˚C to 125˚C Symbol Parameter Conditions Min (Note 5) Typ (Note 4) Max (Note 5) Units VIN Input Voltage LP8345-ADJ,1.8, 2.5 LP8345-3.3, 5.0 2.7 10 10 V VOUT Output Voltage LP8345-ADJ, ADJ = OUT IOUT = 10mA, V IN = 2.7V, T J = 25˚C 100µA ≤IOUT≤ 500mA, 2.7V ≤VIN≤VOUT +4V 1.231 1.213 1.250 1.269 1.288 V LP8345-1.8 IOUT = 10mA, V IN = 2.8V, T J = 25˚C 100µA ≤IOUT ≤500mA, 2.8V ≤VIN≤6V 1.773 1.746 1.800 1.827 1.854 V LP8345-2.5 IOUT = 10mA, V IN = 3.5V, T J = 25˚C 100µA ≤IOUT ≤500mA, 3.5V ≤VIN ≤6.5V 2.463 2.425 2.500 2.538 2.575 V LP8345-3.3 IOUT = 10mA, V IN = 4.3V T J = 25˚C 100µA ≤IOUT ≤500mA, 4.3V ≤VIN ≤7.5V 3.250 3.201 3.300 3.350 3.399 V LP8345-5.0 IOUT = 10mA, V IN = 6V, T J = 25˚C 100µA ≤IOUT ≤500mA, 6V ≤VIN ≤9V 4.925 4.850 5.000 5.075 5.150 V ∆VO Load Regulation LP8345-ADJ, ADJ=OUT IOUT = 1mA to 500mA, V IN = 2.7V 6 20 mV LP8345-1.8 IOUT = 1mA to 500mA, V IN = 2.8V 7 20 LP8345-2.5 IOUT = 1mA to 500mA, V IN = 3.5V 9 30 LP8345-3.3 IOUT = 1mA to 500mA, V IN = 4.3V 12 35 LP8345-5.0 IOUT = 1mA to 500mA, V IN =6 V 1 4 40 LP8345 www.national.com5

Unless otherwise specified all limits guaranteed for V IN =V O+ 1V, CIN =C OUT = 10µF, T J = 25˚C. Boldface limits apply over the full operating temperature range of T J = −40˚C to 125˚C Symbol Parameter Conditions Min (Note 5) Typ (Note 4) Max (Note 5) Units ∆VO Line Regulation V OUT + 0.5V ≤VIN ≤10V, IOUT = 25mA (Note 7) 4 15 mV VIN −V O Dropout Voltage (Note 7) (Note 8) LP8345-2.5 IOUT = 500mA 335 650 mVLP8345-3.3 LP8345-ADJ, VOUT = 3.3V, I OUT = 500mA 270 500 LP8345-5.0 IOUT = 500mA 210 400 IQ Quiescent Current V IN ≤10V 19 50 µA Minimum Load Current V IN −V OUT ≤4V 100 µA ILIMIT Foldback Current Limit V IN −V OUT >5V 450 mAVIN −V OUT <4V 1200 Ripple Rejection Ratio V IN (dc) = V OUT +2 V VIN (ac) = 1V P-P @ 120Hz 48 55 dB TSD Thermal Shutdown Temp. Thermal Shutdown Hyst. 160 ADJ Input Leakage Current V ADJ = 1.5V or 0V ±0.01 ±100 nA VOUT Leakage Current LP8345-ADJ ADJ = OUT, V OUT = 2V, V IN = 10V 10 µA LP8345-1.8, VOUT = 2.5V, V IN = 10V 10 LP8345-2.5, VOUT = 3.5V, V IN = 10V 10 LP8345-3.3, VOUT = 4V, VIN = 10V 10 LP8345-5.0, VOUT = 6V, VIN = 10V 10 en Output Noise 10Hz to 10kHz, R L =1 kΩ,C OUT = 10µF 250 µVrms Note 1: Absolute Maximum ratings indicate limits beyond which damage may occur. Electrical specifications do not apply when operating the device outside of its rated operating conditions. Note 2: All voltages are with respect to the potential at the ground pin. Note 3: Maximum Power dissipation for the device is calculated using the following equations: where TJ(MAX) is the maximum junction temperature, TA is the ambient temperature, and θJA is the junction-to-ambient thermal resistance. The value of the θJA for the LLP package is specifically dependant on the PCB trace area, trace material, and the number of layers and thermal vias. For improved thermal resist ance and power dissipation for the LLP package, refer to Application Note AN-1187. Note 4: Typical Values represent the most likely parametric norm. Note 5: All limits are guaranteed by testing or statistical analysis. Note 6: Human body model 1.5k Ω in series with 100pF. Note 7: Condition does not apply to input voltages below 2.7V since this is the minimum input operating voltage. Note 8: Dropout voltage is measured by reducing V IN until VO drops 100mV from its normal value. LP8345 www.national.com 6

Typical Performance Characteristics Unless otherwise specified, V IN =V O + 1.5V, CIN =C OUT = 10µF X7R ceramic, T J = 25˚C Output Voltage Change vs. Temperature Dropout Voltage vs. Load Current 20064807 20064808 Ground Current vs. Temperature (ILOAD = 500mA) Ground Current vs. Load Current 20064809 20064810 Ground Current vs. Input Voltage Ripple Rejection Ratio vs. Frequency 20064811 20064812 LP8345 www.national.com7

Typical Performance Characteristics (Continued) Load Transient Response Line Transient Response 20064813 20064814 Start-up Response Minimum Input Voltage Rise Time 20064815 20064819 Minimum Input Voltage Rise Time Minimum Input Voltage Rise Time 20064820 20064821 LP8345 www.national.com 8

Typical Performance Characteristics (Continued) Minimum Input Voltage Rise Time Minimum Input Voltage Rise Time 20064822 20064823 LP8345 www.national.com9

tain the error amplifier’s inputs as virtually equal. transient response, power supply rejection and stability. R2 for a desired V OUT (R2 = 100Ω is recommended). FIGURE 1. LP8345 Functional Block Diagram

Applications Section (Continued) START UP CONSIDERATIONS Under certain operating conditions, overshoot of V OUT at start-up can occur. The observed overshoot is a function of rise time of V IN waveform, COUT, start-up load current, and VIN−VOUT differential. The relationship between these con- ditions is shown in the Typical Performance Characteristics curves (Minimum Input Voltage Rise Time). V IN rise times above the curve result in <5% overshoot. Customers are encouraged to check the suitability of LP8345 in their specific application. LP8345 www.national.com11

Physical Dimensions inches (millimeters) unless otherwise noted 6-Pin LLP 3-Pin DPAK LP8345 www.national.com 12

NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. National Semiconductor Americas Customer Support Center Email: new.feedback@nsc.com Tel: 1-800-272-9959 National Semiconductor Europe Customer Support Center Fax: +49 (0) 180-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Français Tel: +33 (0) 1 41 91 8790 National Semiconductor Asia Pacific Customer Support Center Email: ap.support@nsc.com National Semiconductor Japan Customer Support Center Fax: 81-3-5639-7507 Email: jpn.feedback@nsc.com Tel: 81-3-5639-7560 www.national.com LP8345 Low Dropout, Low IQ, 500mA CMOS Linear Regulator National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the righ t at any time without notice to change said circuitry and specifications.