0.1A LOW DROPOUT VOLTAGE REGULATORS LM2931 Features TO-92 - 3-Terminal regulators 0.1A output within 2% over temperature Very low quiescent current Low dropout voltage (300mv Type) Extermely tight load and line regulation Very low temperature coefficent Current and thermal limiting Unregulated DC input canwithstand -20V revers battery and +60V positive transients Applications 1. Vout 2. Gnd 3. Vin - High-efficiency linear regulator - Battery powerd system - Portable/Palm top/Notebook computer - Portable consumer equipment - Portable Instrumentation - Avionics - Automotive Electronics - SMPS Post-Regulator 1 ORDERING INFORMATION DEVICE PKG LM2931L-XX TO-92 (XX= Output Voltage=3.3, 5.0, 8.0, 8.5 9.0 10.0, 12.0,15.0V, Adjustable=AD ) PRODUCT DESCRIPTION The LM2931 is a low power voltage regulator. This device excellent choice for use in battery powered. Furthermore, the quiescent current increases only slightly at dropout, which prolongs battery life. The LM2931 features very low quiescent current (100㎂ Typ.) and very low drop output voltage (Typ. 60㎷ at light load and 300㎷ at 100㎃). 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. The LM2931 fixed-voltage and andjustable regulators is offered in 3-pin TO-92 package compatible with other fixed regulator. BLOCK DIAGRAM AND TYPICAL APPLICATIONS UNREGULATED DC INPUT VOUT OUTPUT + - - +1.23V + ERROR AMPLIFIER REFERENCE 100㎃ MAX 3.3㎌ 60KΩ GROUND HTC 1 0.1A LOW DROPOUT VOLTAGE REGULATORS LM2931 ABSOLUTE MAXIMUM RATINGS POWER DISSIPATION INTERNALLY LIMITED 260℃ Lead Temperature (Soldering, 5 seconds) Storage Temperature Range -65℃ to +150℃ Operating Junction Temperature Range -55℃ to +150℃ -20 to +30V Input Supply Voltage ELECTRICAL CHARACTERISTICS(at Tj=25℃, Io=100㎂, Vin=14V, Co=100㎌ ; unless otherwise noted) PARAMETER Output Voltage (Fixed Model) Output Voltage (Fixed Model) CONDITIONS (Note 2) MIN -25℃ ≤TJ ≤85℃ 0.985｜V0｜ Full Operating Temperature 100㎂≤IL ≤100㎃,TJ≤TJMAX 0.980｜V0｜ 0.975｜V0｜ TYP V0 V0 MAX UNITS 1.015｜V0｜ 1.020｜V0｜ V 1.025｜V0｜ 26 Input Supply Voltage 50 150 ppm/℃ Line Regulation (Note 2) (Note 1) 13V≤VIN≤26V (Note 3) 0.1 0.4 % Load Regulation (Note 2) 1mA≤IL ≤100㎃ 0.1 0.3 % IL =10mA 60 200 IL =100㎃ 300 600 IL =100㎂ 100 150 IL =10㎃ 0.9 1.5 IL =100㎃ 8 12 Output Voltage Temperature Coefficient Dropout Voltage (Note 4) Ground Current (Note 5) ㎷ ㎂ ㎃ Dropout Ground Current (Note 5) VIN=V0-0.5V, IL =100㎂ 110 170 Current Limit VOUT=0 160 200 ㎃ 0.05 0.2 %/W Thermal Regulation (Note 6) Output Noise, 10Hz to 100kHz IL = 10 mA CL =2.2㎌ 500 CL =3.3㎌ 350 CL =33㎌ 120 ㎂ μVr㎳ Shutdown Input Input Logic Voltage Shutdown Pin Input Current Regulator Output Current Shutdown 1.3 Low (Regulator ON) High (Regulator OFF) VS=2.4V VS=26V 0.7 2 30 50 450 600 (Note 8) 5.0V≤VOUT＜15.0V 10 3.3V≤VOUT＜5.0V 20 2.0V≤VOUT＜3.3V 30 V ㎂ Note 1 : Output or reference voltage temperature coefficients defined as the worst case voltage change divided by the total temperature range. Note 2 : 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 3 : Line regulation is tested at 150℃ for IL = 1mA. For IL = 100㎂ and TJ = 125℃, line regulation is guaranteed by value measured at 1V differential. Note 4 : Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V differential. Note 5 : Ground pin current is the regulator quiescent current. The Total current drawn from the source is the sum of the ground pin current and output load current. Note 6 : Thermal Regulation is the change in output voltage at a time T after a change in power dissipation, excluding load or line regulation effects. Specifications are for a 50mA load puls (1.25W) for T = 10ms Note 7 : V REF≤VOUT≤(VIN-1V), 2.3V≤V IN≤26V, 100㎂≤I L≤100㎃, T J≤TJMAX Note 8 : Vshuntdown≥2V, V IN≤26V, Vout≤0V HTC 2