NJM2885 LOW DROPOUT VOLTAGE REGULATOR ■ GENERAL DESCRIPTION The NJM2885 is low dropout voltage regulator designed for portable application. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. ■ PACKAGE OUTLINE NJM2885DL1 ■ FEATURES ●High Ripple Rejection 75dB typ. (f=1kHz) ●Output Noise Voltage Vno=45µVrms ●Output capacitor with 2.2µF ceramic capacitor (Vo≥2.7V) ●Output Current Io(max.)=500mA ●High Precision Output Vo±1.0% ●Low Dropout Voltage 0.18V typ. (Io=300mA) ●Internal Short Circuit Current Limit ●Internal Thermal Overload Protection ●Bipolar Technology ●Package Outline TO-252-3 ■ PIN CONFIGURATION 2 PIN FUNCTION 1.VIN 2.GND 3.VOUT 1 2 3 NJM2885DL1 ■ EQUIVALENT CIRCUIT VIN VOUT Thermal Protection Bandgap Reference GND ■ OUTPUT VOLTAGE RANK LIST Device Name Device Name VOUT NJM2885DL1-18 1.8V NJM2885DL1-30 NJM2885DL1-21 2.1V NJM2885DL1-33 NJM2885DL1-25 2.5V NJM2885DL1-35 NJM2885DL1-26 2.6V NJM2885DL1-38 NJM2885DL1-28 2.8V NJM2885DL1-05 VOUT 3.0V 3.3V 3.5V 3.8V 5.0V NJM2885 ■ ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Power Dissipation Operating Temperature Storage Temperature PD Topr Tstg RATINGS +14 8(Tc=25°C) 0.8(Ta≤25°C) -40 ∼ +85 -40 ∼ +125 (Ta=25°C) UNIT V mW °C °C ■ ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.33µF, Co=2.2µF: Vo≥2.7V (Co=4.7µF: Vo≤2.6V), Ta=25°C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. Output Voltage Vo Io=30mA -1.0% +1.0% − Quiescent Current IQ Io=0mA 200 300 − Output Current Io Vo-0.3V 500 650 Line Regulation 0.10 ∆Vo/∆VIN VIN=Vo+1V ∼ Vo+6.0V, Io=30mA − − Load Regulation 0.03 ∆Vo/∆Io Io=0 ∼ 500mA − − Dropout Voltage Io=300mA 0.18 0.28 ∆VI−O − ein=200mVrms,f=1kHz, Io=10mA Ripple Rejection RR 75 − − Vo=3.0V Version Average Temperature ∆Vo/∆Ta Ta=0∼85°C, Io=10mA ±50 − − Coefficient of Output Voltage f=10Hz∼80kHz, Io=10mA, Output Noise Voltage VNO 45 − − Vo=3.0V Version (*note 1): The above specification is a common specification for all output voltages. Therefore, it may be different from the individual specification for a specific output voltage. UNIT V µA mA %/V %/mA V dB ppm/°C µVrms NJM2885 ■ TEST CIRCUIT A VIN IIN VIN VOUT IOUT V VOUT NJM2885 0.33µF 2.2µF OR 4.7µF(Vo≤2.6V) GND (ceramic) ■ POWER DISSIPATION VS. AMBIENT TEMPERATURE NJU2885DL1 (Topr=-40~+85°C,Tj=125°C,PD=8W(TC=25°C),PD=0.8W(Ta≤25°C)) Power Dissipation PD(W) 10 ∞ Heat Sink 8 θHS=5°C/W 6 θHS=10°C/W 4 θHS=20°C/W 2 Without Heat Sink 0 -50 -25 0 25 50 Ambient Temperature Ta(°C) 75 100 NJM2885 ■ ELECTRICAL CHARACTERISTICS NJM2885_3.0V Output Voltage vs. Input Voltage 3.2 NJM2885_3.0V Output Voltage vs. Output Current 4 @:Ta=25 oC Co=2.2uF (Ceramic) @:Ta=25o C VIN=4.0V Co=2.2uF(Ceramic) 3.5 3.1 Output Voltage : Vo(V) Output Voltage : Vo(V) 3 Io=0A 3 2.9 Io=100mA 2.5 2 1.5 1 2.8 Io=300mA 2.7 2.7 0.5 0 2.8 2.9 3 3.1 3.2 3.3 3.4 0 200 NJM2885_3.0V Ground Pin Current v.s. Output Current @:Ta=25o C VIN=4.0V Co=2.2uF(Ceramic) 1000 o 0.3 20 15 10 5 0.25 0.2 0.15 0.1 0.05 0 0 0 100 200 300 400 500 600 0 700 100 Output Current : IO(mA) 100 60 40 Co=4.7uF(Ceramic) 0.1 1 10 Output Current : Io(mA) 500 600 700 o @:Ta=25 C VIN=4.0V Co=2.2uF(Ceramic) Equivalent Serise Resistance : ESR(ƒ¶) Co=2.2uF(Ceramic) 0.01 400 100 80 0 0.001 300 NJM2885_3.0V Equivalent Serise Resistance vs. Output Current NJM2885_3.0V Output Noise Voltage vs. Output Current 20 200 Output Current:Io(mA) @:Ta=25 oC VIN=4.0V LPF:80kHz Output Noise Voltage : Vn(uVrms) 800 @:Ta=25 C Co=2.2uF (Ceramic) Dropout Voltage:dVI-O (V) Ground Pin Current : IGND (mA) 25 600 NJM2885_3.0V Dropout Voltage vs. Output Current 0.35 30 400 Output Current : Io(mA) Input Voltage : VIN(V) 100 1000 10 STABLE REGION 1 0.1 0.02 0.001 0.01 0.1 1 10 Output Current : Io(mA) 100 3 10 NJM2885 ■ ELECTRICAL CHARACTERISTICS NJM2885_3.0V Ripple Rejection Ratio v.s. Frequency Io=0mA 90 NJM2885_3.0V Ripple Rejection vs. Output Current 100 100 90 Ripple Rejection Ratio : RR (dB) f=1kHz 80 Ripple Rejection : RR (dB) 80 70 Io=10mA Io=30mA 60 50 40 70 f=10kHz 60 50 40 o o @:Ta=25 C VIN=4.0V ein=200mVrms Co=2.2uF(Ceramic) 30 20 10 0.4 30 1k 100 10k @:Ta=25 C VIN=4.0V ein=200mVrms Co=2.2uF (Ceramic) 20 0.001 100k 0.01 0.1 1 10 100 Frequency : f (Hz) Output Current : Io(mA) NJM2885_3.0V Dropout Voltage vs. Temperature NJM2885_3.0V Quiescent Current v.s. Input Voltage 1000 300 @:VIN=4V Output is open. Co=2.2uF(Ceramic) 0.35 250 Quiescent Current : IQ (uA) I-O Dropout Voltage : dV (V) 0.3 0.25 0.2 0.15 0.1 200 150 100 50 0.05 @:Io=300mA Co=2.2uF(Ceramic) 0 0 -50 0 50 100 150 o 4 3.5 Output Voltage :Vo [V] 3 2.5 2 1.5 1 @:VIN=4.0V Io=30mA CL=2.2uF(Ceramic) 0 -50 0 50 100 150 o Temperature :Ta [ C] 0 50 100 Temperature :Ta [ C] NJM2885_3.0V Output Voltage v.s. Temperature 0.5 -50 o Temperature :Ta [ C] 200 150 NJM2885 [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.