NJM2855 LOW DROPOUT VOLTAGE REGULATOR GENERAL DESCRIPTION The NJM2855 is a 3-terminal low dropout voltage regulator. Advanced Bipolar technology achieves low noise, high ripple rejection. It delivers up to 5V/1A output power with the maximum input voltage of 10V. The NJM2855 is suitable for various applications such as portable / consumer devices. PACKAGE OUTLINE NJM2855DL1 FEATURES z High Ripple Rejection 75dB typ. (f=1kHz,Vo=3V Version) z Output Noise Voltage Vno=45µVrms typ. z Output capacitor with 2.2µF ceramic capacitor (Vo≥2.7V) z Output Current Io (max.)=1A z High Precision Output Vo±1.0% z Low Dropout Voltage 0.20V typ. (Io=600mA) z Internal Short Circuit Current Limit z Internal Thermal Overload Protection z Bipolar Technology z Package Outline TO-252-3 PIN CONFIGURATION 2 1 PIN FUNCTION 1.VIN 2.GND 3.VOUT 3 NJM2855DL1 EQUIVALENT CIRCUIT V IN V OUT Thermal Protection Bandgap Reference GND Ver.2008-11-12 1 NJM2855 OUTPUT VOLTAGE RANK LIST The WHITE column shows applicable Voltage Rank(s) 2 Device Name Vout Device Name Vout NJM2855DL1-15 NJM2855DL1-16 NJM2855DL1-17 NJM2855DL1-18 NJM2855DL1-19 NJM2855DL1-02 NJM2855DL1-21 NJM2855DL1-22 NJM2855DL1-23 NJM2855DL1-24 NJM2855DL1-25 NJM2855DL1-26 NJM2855DL1-27 NJM2855DL1-28 NJM2855DL1-29 NJM2855DL1-03 NJM2855DL1-31 NJM2855DL1-32 NJM2855DL1-33 NJM2855DL1-34 1.5V 1.6V 1.7V 1.8V 1.9V 2.0V 2.1V 2.2V 2.3V 2.4V 2.5V 2.6V 2.7V 2.8V 2.9V 3.0V 3.1V 3.2V 3.3V 3.4V NJM2855DL1-35 NJM2855DL1-36 NJM2855DL1-37 NJM2855DL1-38 NJM2855DL1-39 NJM2855DL1-04 NJM2855DL1-41 NJM2855DL1-42 NJM2855DL1-43 NJM2855DL1-44 NJM2855DL1-45 NJM2855DL1-46 NJM2855DL1-47 NJM2855DL1-48 NJM2855DL1-49 NJM2855DL1-05 3.5V 3.6V 3.7V 3.8V 3.9V 4.0V 4.1V 4.2V 4.3V 4.4V 4.5V 4.6V 4.7V 4.8V 4.9V 5.0V Ver.2008-11-12 NJM2855 ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Power Dissipation PD Operating Temperature Topr Storage Temperature Tstg (Ta=25°C) RATINGS UNIT +10 V 1190(*1) mW -40 ∼ +85 °C -40 ∼ +150 °C (*1): Mounted on glass epoxy board based on EIA/JEDEC. (114.3x76.2x1.6mm: 2Layers, copper area 100mm2) OPERATING VOLTAGE VIN=+2.5V ~ +8V (In case of Vo<2.3V version) ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.33µF, Co=2.2µF(1.7V<Vo≤2.6V:4.7µF, Vo≤1.7V:10µF), Ta=25°C) PARAMETER SYMBOL TEST CONDITION MIN. Output Voltage Vo Io=30mA -1.0% Input Voltage VIN Quiescent Current IQ Io=0mA Output Current Io Vo-0.3V 1000 VIN=Vo+1V~Vo+6V(Vo≤2V), Line Regulation ∆Vo/∆VIN VIN=Vo+1V~8V(Vo>2V), Io=30mA Load Regulation ∆Vo/∆Io Io=0 ∼ 1A Io=600mA Dropout Voltage(*2) ∆VI−O ein=200mVrms,f=1kHz, Io=10mA Ripple Rejection RR Vo=3.0V Version Average Temperature ∆Vo/∆Ta Ta=0∼85°C, Io=10mA Coefficient of Output Voltage f=10Hz∼80kHz, Io=10mA, Output Noise Voltage VNO Vo=3.0V Version(*3) Input Voltage VIN - TYP. MAX. UNIT +1.0% V 8 V 400 600 µA 1300 mA 0.20 0.10 %/V 0.004 %/mA 0.28 V 75 - dB ±50 - ppm/°C 45 - µVrms - 8 V (*2): The output voltage excludes under 2.1V. (*3): Vo>2.0V : VIN=Vo+1V, Vo≤2.0V : VIN=3.0V 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. Ver.2008-11-12 3 NJM2855 POWER DISSIPATION vs. AMBIENT TEMPERATURE NJM2855DL1 PowerDissipation (Topr=-40~+85°C,Tj=150°C) Power Dissipation PD(mW) 3500 3000 on 4 layers board 2500 2000 1500 on 2 layers board 1000 500 0 -50 -25 0 25 50 75 100 Temperature : Ta(°C) TEST CIRCUIT A IIN VIN VIN 0.33µF VOUT NJM2855 2.2µF *4 IOUT V VOU (ceramic) GND *4 1.7V<Vo≤2.6V version: Co=4.7µF(ceramic) Vo≤1.7V version: Co=10µF(ceramic) TYPICAL APPLICATION VIN VIN 0.33µF VOUT NJM2855 VOUT 2.2µF *5 GND *5 4 1.7V<Vo≤2.6V version: Co=4.7µF Vo≤1.7V version: Co=10µF Ver.2008-11-12 NJM2855 ¿Input Capacitance CIN Input Capacitance CIN is required to prevent oscillation and reduce power supply ripple for applications with high power supply impedance or a long power supply line. Use the CIN value of 0.33µF greater to avoid the problem. CIN should connect between GND and VIN as short as possible. ¿Output Capacitance Co Output capacitor (Co) is required for a phase compensation of the internal error amplifier. The capacitance and the equivalent series resistance (ESR) influence stability of the regulator. If use a smaller Co, it may cause excess output noise or oscillation of the regulator due to lack of the phase compensation. Therefore, use Co with the recommended capacitance or greater value and connect between Vo terminal and GND terminal with minimal wiring. The recommended capacitance depends on the output voltage. Low voltage regulator requires greater value of the Co. Thus, check the recommended capacitance for each output voltage. Use of a greater Co reduces output noise and ripple output, and also improves transient response of the output voltage against rapid load change. This product is designed to work with any capacitor including a low ESR capacitor for the Co; however, refer "Equivalent Series Resistance vs. Output Current" and choose suitable capacitor. TYPICAL CHARACTERISTICS Ver.2008-11-12 5 NJM2855 NJM2855_3.0V Output Voltage vs. Input Voltage 3.3 NJM2855_3.0V Output Voltage vs. Output Current 4 @:Ta=25oC Co=2.2µF(Ceramic) 3.5 3.2 Output Voltage : Vo(V) Output Voltage : Vo(V) 3 3.1 Io=100mA 3 Io=0A 2.9 2.5 2 1.5 1 2.8 @:Ta=25oC V IN=4V Co=2.2µF(Ceramic) 0.5 Io=1A Io=500mA 2.7 0 2.7 2.8 2.9 3 3.1 3.2 3.3 0 500 NJM2855_3.0V Ground Pin Current vs. Output Current 35 1500 2000 NJM2855_3.0V Dropout Voltage vs. Output Current 0.4 @:Ta=25oC Co=2.2µF (Ceramic) 0.35 30 0.3 25 Dropout Voltage:dVI-O (V) Ground Pin Current : IGND (mA) 1000 Output Current : Io(mA) Input Voltage : V IN(V) 20 15 10 5 @:Ta=25oC V IN=4.0V Co=2.2µF(Ceramic) 0.25 0.2 0.15 0.1 0.05 0 0 0 200 400 600 800 1000 0 1200 200 400 NJM2855_3.0V Load Regulation vs. Output Current 0 600 800 1000 1200 1400 Output Current:Io(mA) Output Current : IO(mA) NJM2855_3.0V Peak Output Current vs. Input Voltage 2500 2000 Peak Output Current : Io MAX(mA) Load Regulation : dVo/dIo(mV) -10 -20 -30 -40 -50 -60 1500 1000 500 o -70 @:Ta=25 C VIN=4.0V Co=2.2µF(Ceramic) @:Ta=25oC Co=2.2µF(Ceramic) 0 -80 0 200 400 600 800 1000 Output Current : Io(mA) 1200 1400 4 5 6 7 8 Input Voltage : V IN(V) TYPICAL CHARACTERISTICS 6 Ver.2008-11-12 NJM2855 NJM2855_3.0V Quiescent Current vs. Input Voltage 6000 100 @:Ta=25oC Output is open. Co=2.2µF(Ceramic) Output Noise Voltage : Vn(uVrms) 5000 Quiescent Current : I Q (uA) NJM2855_3.0V Output Noise Voltage vs. Output Current 4000 3000 2000 1000 1 2 3 4 5 6 7 80 60 40 20 0 0.001 0 0 @:Ta=25oC VIN=4.0V LPF:80kHz Co=2.2µF(ceramic) 8 0.01 Input Voltage : V IN(V) NJM2855_3.0V Ripple Rejection Ratio vs. Frequency Ripple Rejection Ratio : RR (dB) Io=0mA 70 60 Io=30mA Io=100mA 40 @: Ta=25oC VIN=4V ein=200mVrms Co=2.2µF(Ceramic) 30 100 70 60 1k Frequency : f (Hz) 10k 100 f=10kHz 50 40 @:Ta=25oC VIN=4V ein=200mVrms Co=2.2µF(Ceramic) 20 0.001 0.01 0.1 1 10 100 1000 Output Current : Io(mA) NJM2855_3.0V Equivalent Serise Resistance vs. Output Current 100 Equivalent Serise Resistance : ESR( Ω) 1000 80 30 20 10 100 f=1kHz 80 50 10 90 Io=10mA 90 1 NJM2855_3.0V Ripple Rejection vs. Output Current 100 Ripple Rejection : RR (dB) 100 0.1 Output Current : Io(mA) 10 VIN=4V 1 STABLE REGION 0.1 @:Ta=25oC Co=2.2µF(Ceramic) VIN=4V 0.02 0.001 0.01 0.1 1 10 100 103 Output Current : Io(mA) TYPICAL CHARACTERISTICS Ver.2008-11-12 7 NJM2855 NJM2855_3.0V Dropout Voltage vs. Temperature 0.4 Io=600mA Co=2.2µF(Ceramic) 0.35 3.05 Output Voltage : Vo(V) 0.3 Dropout Voltage:dVI-O (V) NJM2855_3.0V Output Voltage vs. Temperature 3.1 0.25 0.2 0.15 0.1 3 2.95 0.05 0 @:VIN=4.0V Io=30mA Co=2.2µF(Ceramic) 2.9 -50 0 50 100 150 -50 0 50 o NJM2855_3.0V Quiescent Current v.s. Input Voltage 600 @:VIN=4.0V Output is open. Co=2.2µF(Ceramic) @:VIN=4.0V Co=2.2µF (Ceramic) Output is short to ground. 800 Short Circuit Current : Isc (mA) Quiescent Current : I Q (uA) 150 NJM2855_3.0V Short Circuit Current v.s. Temperature 1000 500 100 Temperature : Ta ( oC) Temperature : Ta ( C) 400 300 200 100 600 400 200 0 0 -50 0 50 100 -50 150 0 50 o NJM2855_3.0V Line Regulation vs. Temperature 0.1 100 150 Temperature : Ta ( oC) Temperature : Ta ( C) 0.03 NJM2855_3.0V Load Regulation vs. Temperature @:VIN=4.0V Io=0-1000mA Co=2.2µF(Ceramic) Load Regulation : dVo/dIo(%/mA) Line Regulation : dVo/dIo(%/V) 0.025 0.05 0 -0.05 -0.1 @:VIN=4.0-8.0V Io=30mA Co=2.2µF(Ceramic) -50 0 50 o Temperature : Ta ( C) 100 150 0.02 0.015 0.01 0.005 0 -50 0 50 o 100 150 Temperature : Ta ( C) TYPICAL CHARACTERISTICS 8 Ver.2008-11-12 NJM2855 NJM2855_3.0V Output Voltage vs. Temperature 4 3.5 Output Voltage : Vo(V) 3 2.5 2 1.5 1 0.5 @:VIN=4.0V Io=30mA Co=2.2µF(Ceramic) 0 -50 0 50 100 150 200 Temperature : Ta ( oC) NJM2855_3V Line Transient Response NJM2855_3V Load Transient Response 6 3.1 Output Current 5 3.08 1100 3.25 3.2 1000 3.15 900 3.1 800 3.04 3 2 3.02 Output Voltage 1 3 0 2.98 @:Ta=25o C V IN=4V Co=2.2µF Io=30mA 2.96 40 Output Voltage 600 3 500 2.95 o 2.94 0 700 3.05 Output Current : Io [mA] 4 Output Voltage : Vo [V] 3.06 Input Voltage : VIN [V] Output Voltage : Vo [V] Input Voltage 80 120 Time : t [µs] 160 -1 2.9 -2 200 2.85 @:Ta=25 C VIN=4V Co=2.2µF 0 40 80 120 Time : t [µs] 160 400 300 200 [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. Ver.2008-11-12 9