CYStech Electronics Corp. Spec. No. : C503Q8 Issued Date : 2003.03.21 Revised Date : Page No. : 1/5 100mA Low Dropout Voltage Regulators PL2951-XXQ8 FEATURES • Battery powered systems • Cordless telephones • Radio control systems • Portable/Palm top/Notebook computers • Portable consumer equipment • Portable Instrumentation • Avionics • Automotive Electronics • SMPS Post-Regulator • Voltage Reference APPLICATIONS • High accuracy output voltage • Guaranteed 100mA output • Very low quiescent current • Low dropout voltage • Extremely tight load and line regulation • Very low temperature coefficient • Needs only 1µF for stability • Error Flag warns of output dropout • Logic-Controlled electronic shutdown • Output programmable from 1.24 to 29V PRODUCT DESCRIPTION The PL2951-XX is a low power voltage regulator. This device excellent choice for use in battery powered application such as cordless telephone, radio control systems, and portable computers. The PL2951-XX features very low quiescent current (75µA Typ.) and very low drop output voltage (Typ. 40mV at light load and 380mV at 100mA). This includes a tight initial tolerance of 0.5% typ., extremely good load and line regulation of 0.05% typ., and very low output temperature coefficient, making the PL2951-XX useful as a low-power voltage reference. The error flag output feature is used as power-on reset for warn of a low output voltage, due to following batteries on input. Other feature is the logic-compatible shutdown input which enable the regulator to be switched on and off. The PL2951-XX is available in 8-pin plastic packages. The regulator output voltage may be pin-strapped for a -XX volt or programmed from 1.24 volt to 29 volts with external pair of resistors. Absolute Maximum Ratings Power Dissipation Lead Temperature (Soldering, 5 seconds) Storage Temperature Range Operating Junction Temperature Range Input Supply Voltage Feedback Input Voltage Shutdown Input Voltage Error Comparator Output PL2951Q8 Pin Connection Internally Limited 260℃ -65°C to+150°C -55°C to +150°C -0.3 to +30V -1.5 to +30V -0.3 to +30V -0.3 to +30V error CYStek Product Specification CYStech Electronics Corp. Spec. No. : C503Q8 Issued Date : 2003.03.21 Revised Date : Page No. : 2/5 Device Selection Guide Vout, Volts Device * - other versions are also available 2.85* PL2951-2.85 Vout = 2.0V to 5.0V. Please consult factory for 3.0 PL2951-3.0 more information 3.3 PL2951-3.3 5.0 PL2951-5.0 ELECTRICALCHARACTERISTICS (at Ta =25℃, =15V;unless otherwise noted) Parameter Output Voltage Output Voltage Output Voltage Temperature Coefficient Line Regulation(Note 3) Load Regulation(Note 3) Dropout Voltage(Note 5) Ground Current Conditions(Note 2) -25℃≤TJ≤85℃ Full Operating Temperature 100μA≤IL≤100mA,TJ≤TJMAX (Note 1) VO+1V≤Vin≤30V(Note 4) 100μA≤IL≤100mA IL=100μA IL=100mA IL=100μA IL=100mA Vin=Vo-0.5V,IL=100μA Vout=0 Dropout Ground Current Current Limit Thermal Regulation Output Noise, 10Hz to 100KHz CL=1μF CL=200μF CL=3.3μF (Bypass=0.01μF, pins 7 to 1) Reference Voltage Reference Voltage Over Temperature(Note 6) Feedback Pin Bias Current Reference Voltage Temperature (Note 7) Coefficient Feedback Pin Bias Current Temperature Coefficient Error Comparator Output Leakage Current Voh=30V Output Low Voltage Vin=4.5V,IOL=400μA Upper Threshold Voltage (Note 8) Lower Threshold Voltage (Note 8) Hysteresis (Note 8) Shutdown Input Input Logic Voltage Low(Regulator ON) High(Regulator OFF) Shutdown Pin Input Current Vs=2.4V Vs=30V Regulator Output Current in (Note 9) Shutdown VOUT=5V 3.3V≤VOUT≤5.0V 2.0V≤VOUT≤3.3V PL2951Q8 Min 0.985∣Vo∣ 0.98∣Vo∣ 0.976∣Vo∣ - Typ Max Units Vo 1.015∣Vo∣ 1.02∣Vo∣ 1.024∣Vo∣ 150 V Vo 50 ppm/℃ 0.04 0.1 50 380 75 8 110 160 0.05 430 160 100 0.4 0.3 80 450 120 12 170 200 0.2 - 1.21 1.185 - 1.235 20 50 1.26 1.285 40 - nA ppm/℃ - 0.1 - nA/℃ 40 - 0.01 150 60 75 15 1.0 250 95 - μA 2 - 1.3 30 450 3 - 0.7 50 600 10 20 30 V - % % mV ΜA mA μA mA %/W μVrms V mV μA CYStek Product Specification CYStech Electronics Corp. Spec. No. : C503Q8 Issued Date : 2003.03.21 Revised Date : Page No. : 3/5 Note 1:Output or reference voltage temperature coefficients defined as the worse case voltage change divided by the total temperature range. Note 2:Unless otherwise specified all limits guaranteed for TJ=25℃,Vin=Vo+1V,IL=100μA and CL=1μF. Feedback pin tied to –XX V tap pin and output tied to output sense (Vout=XX V) and Vshutdown≤0.8V. Note 3.Regulations is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specification for thermal regulation. Note 4:Line regulation is tested at 150 ℃ for IL=1mA. For IL=100μA and TJ=125 ℃, line regulation is guaranteed by design to 0.2%. Note 5:Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V differential. At very low values of programmed output voltage, the minimum input supply voltage of 2V(2.3V over temperature) must be taken into account. Note 6:Vref≤Vout≤(Vin-1V),2.3V≤Vin≤30V,100μA≤IL≤100mA,TJ≤TJMAX. Note 7:Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range. Note 8:Comparator thresholds are expressed in terms of a voltage differential at the feedback terminal below the nominal reference voltage measured at Vo+1V input. To express these thresholds in terms of output voltage change, multiply by the error amplifier gain = Vout/Vin=(R1+R2)/R2. For example, at a programmed output voltage of 5V, the error output is guaranteed to go low when the output drops by 95mV×5V/1.235=384mV. Thresholds remain constant as a percent of Vout as Vout is varied, with the dropout warning occurring at typically 5% below nominal, 7.5% guaranteed. Note 9:Vshutdown≥2V, Vin≤30V, Vout=0, feedback pin tied to –XX V tap. Block Diagram and Typical Applications 7 8 FEEDBACK 3 INPUT Vo=XX V 100mA Max 1 OUTPUT SENSE 2 XX V TAP 6 ERROR AMPLIFIER SHUTDOWN CAP 60mV ERROR 1.23V REF GROUND PL2951Q8 TO CMOS OR TTL 5 4 CYStek Product Specification CYStech Electronics Corp. Spec. No. : C503Q8 Issued Date : 2003.03.21 Revised Date : Page No. : 4/5 +VIN 100kΩ 8 VIN ERROR OUTPUT 1 5 ERROR VOUT 1.2V to 30V VOUT R1 0.01µF + SHUTDOWN INPUT 3.3μF 3 SD OFF GND FB 4 7 ON 1.23V R2 NOTE:PINS 2 AND 6 ARE LEFT OPEN VOUT=VREF (1+R1/R2) PL2951Q8 VREF CYStek Product Specification CYStech Electronics Corp. Spec. No. : C503Q8 Issued Date : 2003.03.21 Revised Date : Page No. : 5/5 SO-8 Dimension Right side View G Top View A Marking: I C B 2951 H J K E D Front View Part A Part A M L 8-Lead SO-8 Plastic Package CYStek Package Code: S8 N O F *: Typical Inches Min. Max. 0.1909 0.2007 0.1515 0.1555 0.2283 0.2441 0.0480 0.0519 0.0145 0.0185 0.1472 0.1527 0.0570 0.0649 0.1889 0.2007 DIM A B C D E F G H Millimeters Min. Max. 4.85 5.10 3.85 3.95 5.80 6.20 1.22 1.32 0.37 0.47 3.74 3.88 1.45 1.65 4.80 5.10 DIM I J K L M N O Inches Min. Max. 0.0019 0.0078 0.0118 0.0275 0.0074 0.0098 0.0145 0.0204 0.0118 0.0197 0.0031 0.0051 0.0000 0.0059 Millimeters Min. Max. 0.05 0.20 0.30 0.70 0.19 0.25 0.37 0.52 0.30 0.50 0.08 0.13 0.00 0.15 Notes: 1.Controlling dimension: millimeters. 2.Maximum lead thickness includes lead finish thickness, and minimum lead thickness is the minimum thickness of base material. 3.If there is any question with packing specification or packing method, please contact your local CYStek sales office. Material: • Lead: 42 Alloy; solder plating • Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0 Important Notice: • All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of CYStek. • CYStek reserves the right to make changes to its products without notice. • CYStek semiconductor products are not warranted to be suitable for use in Life-Support Applications, or systems. • CYStek assumes no liability for any consequence of customer product design, infringement of patents, or application assistance. PL2951Q8 CYStek Product Specification