NJM2845/46 LOW DROPOUT VOLTAGE REGULATOR GENERAL DESCRIPTION The NJM2845 is low dropout voltage regulator. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. NJM2845 is 3 terminal type and NJM2846 is ON/OFF control built in type. These product can be selected according to the applications. PACKAGE OUTLINE NJM2845DL1 NJM2846DL3 FEATURES High Ripple Rejection 75dB typ. (f=1kHz,3V Version) Output Noise Voltage Vno=45µVrms typ. (Vo=3V Version) Output capacitor with 2.2µF ceramic capacitor (Vo≥2.6V) Output Current Io(max.)=800mA High Precision Output Vo ±1.0% Low Dropout Voltage 0.18V typ. (Io=500mA) ON/OFF Control (NJM2846) Internal Short Circuit Current Limit Internal Thermal Overload Protection Bipolar Technology Package Outline TO-252-3 (NJM2845DL1), TO-252-5 (NJM2846DL3) PIN CONFIGURATION 2 1 1.VIN 2.GND 3.VOUT 3 3 123 45 NJM2845DL1 1.CONTROL 2.VIN 3.GND 4.Vo 5.NC NJM2846DL3 EQUIVALENT CIRCUIT V IN V OUT Thermal Protection VIN Control Bandgap Reference GND Thermal Protection Bandgap Reference GND NJM2845DL1 Ver.2005-01-20 VOUT NJM2846DL3 -1- NJM2845/46 OUTPUT VOLTAGE RANK LIST Device Name VOUT NJM284*DL*-18 1.8V NJM284*DL*-23 2.3V NJM284*DL*-25 2.5V NJM284*DL*-03 3.0V NJM284*DL*-33 3.3V NJM284*DL*-05 5.0V ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Control Voltage VCONT Power Dissipation PD (Ta=25°C) RATINGS UNIT +14 V +14(*1) V 10(Tc≤25°C) W 1.0(Ta≤25°C) Operating Topr -40 ∼ +85 °C Temperature Storage Tstg -40 ∼ +150 °C Temperature (*1): When input voltage is less than +14V, the absolute maximum control voltage is equal to the input voltage. Operating voltage VIN=+2.5V(In case of Vo<2.3V) ~ +(Vo+10V) NJM2845 ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.33µF, Co=2.2µF(Vo≤2.6V: Co=4.7µF), Ta=25°C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. Output Voltage Vo Io=30mA -1.0% +1.0% Quiescent Current IQ Io=0mA 400 600 Output Current Io Vo - 0.3V 800 1050 0.10 Line Regulation ∆Vo/∆VIN VIN=Vo+1V ∼ Vo+6V, Io=30mA Load Regulation 0.004 ∆Vo/∆Io Io=0 ∼ 800mA Io=500mA 0.18 0.28 Dropout Voltage(*2) ∆VI -O ein=200mVrms, f=1kHz, Io=10mA, Ripple Rejection RR 75 Vo=3V Version Average Temperature Coefficient of Output ∆Vo/∆Ta Ta=0 ∼ 85°C, Io=10mA ± 50 Voltage f=10Hz ∼ 80kHz, Io=10mA, Output Noise Voltage VNO 45 Vo=3V Version (*2): The output voltage excludes under 2.3V. 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. -2- UNIT V µA mA %/V %/mA V dB ppm/°C µVrms Ver.2005-01-20 NJM2845/46 POWER DISSIPATION vs. AMBIENT TEMPERATURE NJM2846DL3 (Topr=-40~+85°C,Tj=+150°C,PD=10W(TC≤25°C),PD=1W(Ta≤25°C)) 12 Power Dissipation PD(W) 10 ∞ Heat Sink 8 θHS=5°C/W 6 θHS=10°C/W θHS=20°C/W 4 2 Without Heat Sink 0 -50 -25 0 25 50 75 100 Ambient Temperature Ta(°C) TEST CIRCUIT A VIN IIN VIN 0.33µF VOUT IOUT V VOU NJM2845 2.2µF *3 (ceramic) GND *3 Vo≤2.6V version: Co=4.7µF(ceramic) TYPICAL APPLICATION VIN VIN 0.33µF VOUT NJM2845 VOUT 2.2µF *4 GND *4 Ver.2005-01-20 Vo≤2.6V version: Co=4.7µF -3- NJM2845/46 NJM2846 ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.33µF, Co=2.2µF(Vo≤2.6V: Co=4.7µF), Ta=25°C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. Output Voltage Vo Io=30mA -1.0% +1.0% Quiescent Current IQ Io=0mA 400 600 Quiescent Current VCONT=0V 100 IQ (OFF) at Control OFF Line Regulation Io Vo - 0.3V 800 1050 0.10 Line Regulation ∆Vo/∆VIN VIN=Vo+1V ∼ Vo+6V, Io=30mA Load Regulation 0.004 ∆Vo/∆Io Io=0 ∼ 800mA Io=500mA 0.18 0.28 Dropout Voltage(*5) ∆VI -O ein=200mVrms, f=1kHz, Io=10mA, Ripple Rejection RR 75 Vo=3V Version Average Temperature Coefficient of Output ∆Vo/∆Ta Ta=0 ∼ 85°C, Io=10mA ± 50 Voltage f=10Hz ∼ 80kHz, Io=10mA, Output Noise Voltage VNO 45 Vo=3V Version Control Current ICONT VCONT=1.6V, Io=0mA 3 12 Control Voltage for ON-state VCONT(ON) 1.6 Control Voltage for OFF-state VCONT(OFF) 0.6 UNIT V µA nA mA %/V %/mA V dB ppm/° C µVrms µA V V (*5): The output voltage excludes under 2.3V. 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. POWER DISSIPATION vs. AMBIENT TEMPERATURE NJM2846DL3 (Topr=-40~+85°C,Tj=+150°C,PD=10W(TC≤25°C),PD=1W(Ta≤25°C)) Power Dissipation PD(W) 12 10 ∞ Heat Sink 8 θHS=5°C/W 6 θHS=10°C/W θHS=20°C/W 4 2 Without Heat Sink 0 -50 -25 0 25 50 75 100 Ambient Temperature Ta(°C) -4- Ver.2005-01-20 NJM2845/46 TEST CIRCUIT A IIN VIN VIN 0.33µF A ICONT VOUT NJM2846 Ver.2005-01-20 *6 IOUT V VOU (ceramic) CONTROL V VCONT *6 2.2µF GND Vo≤2.6V version: Co=4.7µF(ceramic) -5- NJM2845/46 TYPICAL APPLICATION 1 In the case where ON/OFF Control is not required: VIN VIN 0.33µF VOUT NJM2846 VOUT 2.2µF *7 R (0～300kΩ) CONTROL GND *7 Vo≤2.6V version: Co=4.7µF Connect control terminal to VIN terminal The quiescent current can be reduced by using a resistance “R”. Instead, it increases the minimum operating voltage. For further information, please refer to Figure “Output Voltage vs. Control Voltage”. 2 In use of ON/OFF CONTROL: VIN VIN VOUT NJM2846 0.33µF VOUT 2.2µF *7 R CONTROL GND *7 Vo≤2.6V version: Co=4.7µF State of control terminal: •“H”→ output is enabled. •“L” or “open” → output is disabled. -6- Ver.2005-01-20 NJM2845/46 TYPICAL CHARACTERISTICS (NJM2845) NJM2845_3.0V Output Voltage vs. Input Voltage 3.3 NJM2845_3.0V Output Voltage vs. Output Current 4 o @:Ta=25 C Co=2.2µF(Ceramic) 3.5 3.2 Output Voltage : Vo(V) Output Voltage : Vo(V) 3 3.1 Io=0A 3 2.9 2.5 2 1.5 1 Io=200mA 2.8 o @:Ta=25 C V IN=4V Co=2.2µF(Ceramic) 0.5 Io=500mA 2.7 2.7 2.8 2.9 3 3.1 0 3.2 3.3 0 500 NJM2845_3.0V Ground Pin Current vs. Output Current 35 1000 1500 2000 Output Current : Io(mA) Input Voltage : VIN(V) NJM2845_3V Dropout Voltage vs. Output Current 0.35 o @:Ta=25 C Co=2.2µF(Ceramic) 0.3 25 Dropout Voltage:dVI-O (V) Ground Pin Current : IGND (mA) 30 20 15 10 5 0.25 0.2 0.15 0.1 0.05 @:Ta=25 oC V IN=4.0V Co=2.2µF(Ceramic) 0 0 0 200 400 600 800 0 1000 200 NJM2845_3.0V Load Regulation vs. Output Current 0 400 600 800 1000 Output Current:Io(mA) Output Current : IO(mA) NJM2845_3.0V Peak Output Current vs. Input Voltage 2500 2000 -20 Peak Output Current : IoMAX(mA) Load Regulation : dVo/dIo(mV) -10 -30 -40 -50 -60 @:Ta=25 oC V IN=4.0V Co=2.2µF(Ceramic) -70 -80 0 200 1000 500 @:Ta=25oC Co=2.2µF(Ceramic) 0 400 600 Output Current : Io(m A) Ver.2005-01-20 1500 800 1000 4 6 8 10 12 14 Input Voltage : VIN(V) -7- NJM2845/46 TYPICAL CHARACTERISTICS (NJM2845) NJM2845_3.0V Quiescent Current vs. Input Voltage 2500 NJM2845_3.0V Output Noise Voltage vs. Output Current 100 @:Ta=25oC V IN=4.0V LPF:80kHz Co=2.2µF(ceramic) o @:Ta=25 C Output is open. Co=2.2µF(Ceramic) Output Noise Voltage : Vn(µ Vrms) Quiescent Current : IQ (µ µ A) 2000 1500 1000 500 5 10 60 40 20 0 0.001 0 0 80 15 0.01 Input Voltage : VIN(V) NJM2845_3.0V Ripple Rejection Ratio vs. Frequency 100 Io=10mA Ripple Rejection Ratio : RR (dB) 90 90 Ripple Rejection : RR (dB) 80 70 60 Io=30mA 50 40 20 10 10 70 1000 f=10kHz 60 50 40 o @:Ta=25 C V IN=4V ein=200mVrms Co=2.2µF(Ceramic) 1k 1000 20 0.001 100k 105 4 10k 10 0.01 0.1 1 10 100 1000 Output Current : Io(mA) Frequency : f (Hz) NJM2845_3.0V Equivalent Serise Resistance vs. Output Current NJM2845_3.0V Dropout Voltage vs. Temperature 0.4 @:Ta=25oC Co=2.2µF(Ceramic) V IN=4.0V Io=500mA Co=2.2µF(Ceramic) 0.35 0.3 10 Dropout Voltage:dVI-O (V) Equivalent Serise Resistance : ESR(Ω ) 100 80 30 100 100 100 10 f=1kHz o @:Ta=25 C V IN=4V ein=200mVrms Co=2.2µF(Ceramic) 30 1 NJM2845_3V Ripple Rejection vs. Output Current 100 Io=0mA Io=100mA 0.1 Output Current : Io(mA) STABLE REGION 1 0.25 0.2 0.15 0.1 0.1 0.05 0.02 0.001 0.01 0.1 1 10 Output Current : Io(m A) -8- 100 103 0 -50 0 50 100 150 o Temperature : Ta ( C) Ver.2005-01-20 NJM2845/46 TYPICAL CHARACTERISTICS (NJM2845) NJM2845_3.0V Output Voltage vs. Temperature 3.1 3.05 1500 Peak Output Current : IoMAX(mA) Output Voltage : Vo(V) NJM2845_3.0V Peak Output Current vs. Input Voltage 2000 3 1000 2.95 500 @:VIN=4.0V Io=30mA Co=2.2µF(Ceramic) 2.9 @:Ta=25 oC Co=2.2µF(Ceramic) 0 -50 0 50 100 150 -50 0 o 100 150 Temperature : Ta ( C) NJM2845_3.0V Quiescent Current v.s. Input Voltage NJM2845_3.0V Line Regulation vs. Temperature 0.1 600 @:VIN=4.0V Output is open. Co=2.2µF(Ceramic) Line Regulation : dVo/dIo(%/V) 500 Quiescent Current : IQ (mA) 50 o Temperature : Ta ( C) 400 300 200 0.05 0 -0.05 100 0 -50 0 50 100 -0.1 150 @:V IN=4.0-9.0V Io=30mA Co=2.2µF(Ceramic) -50 o 0 Temperature : Ta ( C) 0.03 50 o 100 150 Temperature : Ta ( C) NJM2845_3.0V Load Regulation vs. Temperature NJM2845_3.0V Output Voltage vs. Temperature 4 @:V IN=4.0V Io=0-800mA Co=2.2µF(Ceramic) 3.5 3 0.02 Output Voltage : Vo(V) Load Regulation : dVo/dIo(%/mA) 0.025 0.015 0.01 0.005 0 -50 2 1.5 1 0.5 0 0 50 o Temperature : Ta ( C) Ver.2005-01-20 2.5 100 150 @:V IN=4.0V Io=30mA Co=2.2µF(Ceramic) -50 0 50 100 150 200 o Temperature : Ta ( C) -9- NJM2845/46 TYPICAL CHARACTERISTICS (NJM2845) NJM2845_3.0V Short Circuit Current v.s. Temperature 1000 @:VIN=4.0V Co=2.2µF(Ceramic) Output is short to ground. Short Circuit Current : Isc (mA) 800 600 400 200 0 -50 0 50 100 150 200 Temperature : Ta (oC) NJM2845_3V Line Transient Response NJM2845_3V Load Transient Response 3.1 3.08 6 3.25 5 3.2 900 800 Input Voltage 3.04 3 Output Voltage 3.02 2 3 1 o 2.98 0 @:Ta=25 C VIN=4V Co=2.2µF Io=30mA 2.96 - 10 - 40 3.15 700 3.1 600 3.05 500 3 400 Output Voltage 2.95 300 o 2.94 0 Output Voltage : Vo [V] 4 Input Voltage : VIN [V] Output Voltage : Vo [V] 3.06 Output Current : Io [mA] Output Current 80 120 Time : t [µ µs] 160 -1 2.9 -2 200 2.85 @:Ta=25 C VIN=4V Co=2.2µF 0 40 80 120 Time : t [µ µs] 160 200 100 200 Ver.2005-01-20 NJM2845/46 TYPICAL CHARACTERISTICS (NJM2846) NJM2846_3.0V Output Voltage vs. Input Voltage 3.3 NJM2846_3.0V Output Voltage vs. Output Current 4 o @:Ta=25 C Co=2.2µF(Ceramic) @:Ta=25o C V IN=4.0V Co=2.2µF(Ceramic) 3.5 3.2 Output Voltage : Vo(V) Output Voltage : Vo(V) 3 3.1 Io=0A 3 2.9 2.5 2 1.5 1 Io=200mA 2.8 0.5 Io=500mA 2.7 2.7 2.8 2.9 3 3.1 3.2 0 3.3 0 500 Input Voltage : VIN(V) 1000 1500 2000 Output Current : Io(mA) NJM2846_3.0V Ground Pin Current v.s. Output Current 35 NJM2846_3.0V Dropout Voltage vs. Output Current 0.35 o 30 0.3 25 0.25 Dropout Voltage:dVI-O (V) Ground Pin Current : IGND (mA) @:Ta=25 C Co=2.2µF(Ceramic) 20 15 10 o 5 0.2 0.15 0.1 0.05 @:Ta=25 C VIN=4.0V Co=2.2µF(Ceramic) 0 0 0 200 400 600 800 0 1000 200 400 Output Current : IO(mA) NJM2846_3.0V Control Current vs. Control Voltage 60 800 1000 NJM2846_3.0V Output Voltage vs. Control Voltage 3.5 @:Ta=25oC V IN=4.0V Co=2.2µF(Ceramic) Io=30mA 50 600 Output Current:Io(mA) 3 Output Voltage : Vo(V) 40 Control Current : I Cont (µ µ A) Rc=0Ω 2.5 30 Rc=0Ω 20 Rc=100kΩ Rc=50kΩ Rc=50kΩ 2 1.5 Rc=100kΩ 1 o 10 0 0 0 0.5 1 1.5 2 2.5 Control Voltage : V 3 (V) Cont Ver.2005-01-20 @:Ta=25 C V IN=4.0V Co=2.2µF(Ceramic) Io=30mA 0.5 3.5 4 0 0.5 1 1.5 2 Control Voltage : V 2.5 3 (V) Cont - 11 - NJM2845/46 TYPICAL CHARACTERISTICS (NJM2846) NJM2846_3.0V Load Regulation vs. Output Current 0 NJM2846_3.0V Peak Output Current vs. Input Voltage 2500 -10 Peak Output Current : IoMAX(mA) Load Regulation : dVo/dIo(mV) 2000 -20 -30 -40 -50 -60 1500 1000 500 @:Ta=25 oC V IN=4.0V Co=2.2µF(Ceramic) -70 o @:Ta=25 C Co=2.2µF(Ceramic) -80 0 0 200 400 600 800 1000 4 6 NJM2846_3.0V Quiescent Current v.s. Input Voltage @:Ta=25o C Output is open. Co=2.2µF(Ceramic) including Icont Output Noise Voltage : Vn(µ µ Vrms) Quiescent Current : IQ (µ µ A) 1000 500 10 80 60 40 20 15 0.01 NJM2846_3.0V Ripple Rejection Ratio v.s. Frequency Io=0mA 90 80 80 70 Io=30mA 50 40 20 @:Ta=25 C VIN=4.0V ein=200mVrms Co=2.2µF(Ceramic) 10 100 Frequency : f (Hz) 100 1000 10k 100k f=1kHz 60 50 40 30 1k 10 f=10kHz 70 o 30 - 12 - Ripple Rejection : RR (dB) Ripple Rejection Ratio : RR (dB) 90 Io=100mA 1 NJM2846_3.0V Ripple Rejection vs. Output Current 100 100 60 0.1 Output Current : Io(mA) Input Voltage : VIN(V) Io=10mA 14 @:Ta=25 C V IN=4.0V LPF:80kHz Co=2.2µF(ceramic) 0 0.001 0 5 12 o 1500 0 10 NJM2846_3.0V Output Noise Voltage vs. Output Current 100 2500 2000 8 Input Voltage : VIN(V) Output Current : Io(mA) @:Ta=25o C V IN=4.0V ein=200mVrms Co=2.2µF(Ceramic) 20 0.001 0.01 0.1 1 10 100 1000 Output Current : Io(mA) Ver.2005-01-20 NJM2845/46 TYPICAL CHARACTERISTICS (NJM2846) NJM2846_3.0V Equivalent Serise Resistance vs. Output Current NJM2846_3.0V Dropout Voltage vs. Output Current 100 0.4 Io=500mA Co=2.2µF(Ceramic) 0.35 10 0.3 Dropout Voltage:dVI-O (V) Equivalent Serise Resistance : ESR(Ω ) @:Ta=25oC V IN=4.0V Co=2.2µF STABLE REGION 1 0.25 0.2 0.15 0.1 0.1 0.05 0.02 0.001 0.01 0.1 1 10 0 3 100 10 -50 0 50 100 150 o Temperature : Ta ( C) Output Current : Io(m A) NJM2846_3.0V Control Voltage v.s. Temperature NJM2846_3.0V Output Voltage vs. Temperature 3.1 2 3.05 1.5 Output Voltage : Vo(V) Control Voltage :Vcont-off [V] @:V IN=4.0V Io=30mA Co=2.2µF(Ceramic) 1 0.5 0 3 2.95 @:V IN=4.0V Io=30mA Co=2.2µF(Ceramic) 2.9 -50 0 50 100 150 -50 0 2000 50 Temperature : Ta ( C) Temperature : Ta ( C) NJM2846_3.0V Peak Output Current v.s. Temperature NJM2846_3.0V Quiescent Current v.s. Input Voltage 150 600 @:VIN=4.0V Output is open. Co=2.2µF(Ceramic) @:VIN=4.0V Co=2.2µF(Ceramic) 500 Peak Output Current: Io_peak (mA) 100 o o Quiescent Current : IQ (µ µ A) 1500 1000 500 300 200 100 0 0 -50 0 50 100 o Temperature : Ta ( C) Ver.2005-01-20 400 150 -50 0 50 100 150 o Temperature : Ta ( C) - 13 - NJM2845/46 TYPICAL CHARACTERISTICS (NJM2846) NJM2846_3.0V Line Regulation vs. Temperature 0.1 NJM2846_3.0V Load Regulation vs. Temperature 0.03 @:V IN=4.0V Io=0-800mA Co=2.2µF(Ceramic) Load Regulation : dVo/dIo(%/mA) Line Regulation : dVo/dIo(%/V) 0.025 0.05 0 -0.05 -0.1 0.02 0.015 0.01 0.005 @:V IN=4.0-9.0V Io=30mA Co=2.2µF(Ceramic) -50 0 50 o 100 0 -50 150 0 Temperature : Ta ( C) NJM2846_3.0V Output Voltage vs. Temperature 4 50 o 100 150 Temperature : Ta ( C) NJM2846_3.0V Short Circuit Current v.s. Temperature 1000 @:VIN=4.0V Co=2.2µF(Ceramic) Output is short to ground. 3.5 800 Short Circuit Current : Isc (mA) 2.5 2 1.5 1 0.5 0 600 400 200 @:V IN=4.0V Io=30mA Co=2.2µF(Ceramic) 0 -50 0 50 100 150 200 -50 0 o NJM2846_3.0V ON/OFF Transient Response without Load NJM2846_3.0V ON/OFF Transient Response without Load 6 10 7 5 6 5 Output Voltage : Vo [V] -5 4 Output Voltage -10 3 -15 2 o @:Ta=25 C VIN=4.0V Co=2.2uF(Ceramic) Io=0mA -1 - 14 - 1 2 3 Time : t [S] 4 5 0 5 Output Voltage : Vo [V] 0 Control Voltage : Vo [V] Control Voltage 5 0 150 10 Control Voltage 0 100 Temperature : Ta (oC) 7 1 50 Temperature : Ta ( C) -5 4 Output Voltage -10 3 -15 2 -20 1 -25 0 -30 -1 Control Voltage : Vo [V] Output Voltage : Vo(V) 3 -20 o @:Ta=25 C VIN=4.0V Co=2.2uF(Ceramic) Io=30mA -25 -30 0 4 8 12 Time : t [mS] 16 20 Ver.2005-01-20 NJM2845/46 TYPICAL CHARACTERISTICS (NJM2846) NJM2846_3V Line Transient Response NJM2846_3V Load Transient Response 3.1 3.08 6 3.25 5 3.2 900 800 Input Voltage 3.04 3 Output Voltage 3.02 2 3 1 o 2.98 0 @:Ta=25 C VIN=4V Co=2.2µF Io=30mA 2.96 40 3.15 700 3.1 600 3.05 500 3 400 Output Voltage 2.95 300 o 2.94 0 Output Voltage : Vo [V] 4 Input Voltage : VIN [V] Output Voltage : Vo [V] 3.06 Output Current : Io [mA] Output Current 80 120 Time : t [µ µs] 160 -1 2.9 -2 200 2.85 @:Ta=25 C VIN=4V Co=2.2µF 0 40 80 120 Time : t [µ µs] 160 200 100 200 [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.2005-01-20 - 15 -