 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| 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=45Vrms typ. (Vo=3V Version) Output capacitor with 2.2F ceramic capacitor (Vo2.6V) 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.VIN 2.GND 3.VOUT 3 3 1 12345 1.CONTROL 2.VIN 3.GND 4.Vo 5.NC NJM2845DL1 EQUIVALENT CIRCUIT NJM2846DL3 V IN Thermal Protection Bandgap Reference V OUT VIN Control Bandgap Reference Thermal Protection VOUT GND GND NJM2845DL1 NJM2846DL3 Ver.2005-01-20 -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=25C) RATINGS UNIT +14 V +14(*1) V 10(Tc25C) W 1.0(Ta25C) 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=0.33F, Co=2.2F(Vo2.6V: Co=4.7F), Ta=25C) 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 85C, 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. UNIT V A mA %/V %/mA V dB ppm/C Vrms -2- Ver.2005-01-20 NJM2845/46 POWER DISSIPATION vs. AMBIENT TEMPERATURE NJM2846DL3 (Topr=-40~+85C,Tj=+150C,PD=10W(TC25C),PD=1W(Ta25C)) 12 Power Dissipation PD(W) 10 8 6 4 2 0 -50 -25 0 25 HS=5C/W HS=10C/W HS=20C/W Heat Sink Without Heat Sink 50 75 100 Ambient Temperature Ta(C) TEST CIRCUIT A VIN IIN VIN VOUT 0.33F NJM2845 IOUT V VOU 2.2F *3 (ceramic) GND *3 Vo2.6V version: Co=4.7F(ceramic) TYPICAL APPLICATION VIN VIN VOUT VOUT 2.2F *4 0.33F NJM2845 GND *4 Vo2.6V version: Co=4.7F Ver.2005-01-20 -3- NJM2845/46 NJM2846 ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.33F, Co=2.2F(Vo2.6V: Co=4.7F), Ta=25C) 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 85C, 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 (*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. UNIT V A nA mA %/V %/mA V dB ppm/ C Vrms A V V POWER DISSIPATION vs. AMBIENT TEMPERATURE NJM2846DL3 (Topr=-40~+85C,Tj=+150C,PD=10W(TC25C),PD=1W(Ta25C)) 12 Power Dissipation PD(W) 10 8 6 4 2 0 -50 -25 0 25 HS=5C/W HS=10C/W HS=20C/W Heat Sink Without Heat Sink 50 75 100 Ambient Temperature Ta(C) -4- Ver.2005-01-20 NJM2845/46 TEST CIRCUIT A VIN IIN VIN VOUT 0.33F NJM2846 2.2F *6 IOUT V VOU (ceramic) A V VCONT ICONT CONTROL GND *6 Vo2.6V version: Co=4.7F(ceramic) Ver.2005-01-20 -5- NJM2845/46 TYPICAL APPLICATION 1 In the case where ON/OFF Control is not required: VIN 0.33F R (0300k) CONTROL VIN VOUT VOUT NJM2846 2.2F *7 GND *7 Vo2.6V version: Co=4.7F 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 VOUT 0.33F R NJM2846 2.2F *7 CONTROL GND *7 Vo2.6V version: Co=4.7F State of control terminal: *"H" output is enabled. *"L" or "open" output is disabled. -6- Ver.2005-01-20 NJM2845/46 TYPICAL CHARACTERISTICS (NJM2845) 3.3 NJM2845_3.0V Output Voltage vs. Input Voltage @:Ta=25 C Co=2.2F(Ceramic) o 4 NJM2845_3.0V Output Voltage vs. Output Current 3.2 3.5 3 Output Voltage : Vo(V) Output Voltage : Vo(V) Io=200mA 3.1 2.5 Io=0A 3 2 2.9 1.5 1 2.8 @:Ta=25 C VIN=4V Co=2.2F(Ceramic) 0 500 1000 1500 2000 o 0.5 Io=500mA 2.7 2.8 2.9 3 3.1 3.2 3.3 2.7 0 Input Voltage : VIN(V) Output Current : Io(mA) 35 NJM2845_3.0V Ground Pin Current vs. Output Current 0.35 o NJM2845_3V Dropout Voltage vs. Output Current @:Ta=25 C Co=2.2F(Ceramic) 30 0.3 Ground Pin Current : IGND (mA) 25 20 Dropout Voltage:dVI-O (V) @:Ta=25 oC VIN=4.0V Co=2.2F(Ceramic) 0 200 400 600 800 1000 0.25 0.2 15 0.15 10 0.1 5 0.05 0 0 0 200 400 600 800 1000 Output Current : IO(mA) Output Current:Io(mA) 0 NJM2845_3.0V Load Regulation vs. Output Current 2500 NJM2845_3.0V Peak Output Current vs. Input Voltage -10 Load Regulation : dVo/dIo(mV) 2000 -30 Peak Output Current : IoMAX(mA) @:Ta=25 oC VIN=4.0V Co=2.2F(Ceramic) 0 200 400 600 800 1000 -20 1500 -40 -50 1000 -60 500 @:Ta=25oC Co=2.2F(Ceramic) 0 4 6 8 10 12 14 -70 -80 Output Current : Io(m A) Input Voltage : VIN(V) Ver.2005-01-20 -7- NJM2845/46 TYPICAL CHARACTERISTICS (NJM2845) 2500 NJM2845_3.0V Quiescent Current vs. Input Voltage @:Ta=25 C Output is open. Co=2.2F(Ceramic) o 100 NJM2845_3.0V Output Noise Voltage vs. Output Current @:Ta=25oC VIN=4.0V LPF:80kHz Co=2.2F(ceramic) Output Noise Voltage : Vn( Vrms) 0 5 10 15 2000 80 Quiescent Current : IQ (A) 1500 60 1000 40 500 20 0 0 0.001 0.01 0.1 1 10 100 1000 Input Voltage : VIN(V) Output Current : Io(mA) 100 NJM2845_3.0V Ripple Rejection Ratio vs. Frequency Io=10mA Io=0mA 100 NJM2845_3V Ripple Rejection vs. Output Current 90 90 f=1kHz Ripple Rejection Ratio : RR (dB) Ripple Rejection : RR (dB) 80 80 70 70 f=10kHz 60 Io=100mA 50 Io=30mA 60 50 40 @:Ta=25 C VIN=4V ein=200mVrms Co=2.2F(Ceramic) 10 10 100 100 1k 1000 10k 104 100k 105 o 40 @:Ta=25 C VIN=4V ein=200mVrms Co=2.2F(Ceramic) 0.01 0.1 1 10 100 1000 o 30 30 20 20 0.001 Frequency : f (Hz) Output Current : Io(mA) 100 NJM2845_3.0V Equivalent Serise Resistance vs. Output Current @:Ta=25oC Co=2.2F(Ceramic) VIN=4.0V 0.4 NJM2845_3.0V Dropout Voltage vs. Temperature Io=500mA Co=2.2F(Ceramic) Equivalent Serise Resistance : ESR( ) 0.35 10 0.3 Dropout Voltage:dVI-O (V) 103 0.25 1 STABLE REGION 0.2 0.15 0.1 0.1 0.05 0.02 0.001 0 -50 0 50 100 o 0.01 0.1 1 10 100 150 Output Current : Io(m A) Temperature : Ta ( C) -8- Ver.2005-01-20 NJM2845/46 TYPICAL CHARACTERISTICS (NJM2845) 3.1 NJM2845_3.0V Output Voltage vs. Temperature 2000 NJM2845_3.0V Peak Output Current vs. Input Voltage 3 2.95 Peak Output Current : IoMAX(mA) @:VIN=4.0V Io=30mA Co=2.2F(Ceramic) 3.05 1500 Output Voltage : Vo(V) 1000 500 @:Ta=25 oC Co=2.2F(Ceramic) 0 50 100 o 2.9 -50 0 150 -50 0 50 100 o 150 Temperature : Ta ( C) Temperature : Ta ( C) NJM2845_3.0V Quiescent Current v.s. Input Voltage 600 @:VIN=4.0V Output is open. Co=2.2F(Ceramic) 0.05 0.1 NJM2845_3.0V Line Regulation vs. Temperature 500 400 300 Line Regulation : dVo/dIo(%/V) Quiescent Current : IQ (mA) 0 200 -0.05 100 @:VIN=4.0-9.0V Io=30mA Co=2.2F(Ceramic) -50 0 50 o 0 -50 0 50 100 o 150 -0.1 100 150 Temperature : Ta ( C) Temperature : Ta ( C) 0.03 NJM2845_3.0V Load Regulation vs. Temperature @:VIN=4.0V Io=0-800mA Co=2.2F(Ceramic) 4 NJM2845_3.0V Output Voltage vs. Temperature 3.5 0.025 Load Regulation : dVo/dIo(%/mA) 3 Output Voltage : Vo(V) 0.02 2.5 0.015 2 1.5 0.01 1 0.005 0.5 0 -50 0 0 50 @:VIN=4.0V Io=30mA Co=2.2F(Ceramic) -50 0 50 100 o Temperature : Ta ( C) o 100 150 150 200 Temperature : Ta ( C) Ver.2005-01-20 -9- NJM2845/46 TYPICAL CHARACTERISTICS (NJM2845) 1000 NJM2845_3.0V Short Circuit Current v.s. Temperature @:VIN=4.0V Co=2.2F(Ceramic) Output is short to ground. 800 Short Circuit Current : Isc (mA) 600 400 200 0 -50 0 50 100 150 200 Temperature : Ta (oC) NJM2845_3V Line Transient Response 3.1 3.08 Input Voltage 3.06 Output Voltage : Vo [V] 3.04 Output Voltage 3.02 3 2.98 2.96 2.94 0 40 80 120 Time : t [s] 160 @:Ta=25 C VIN=4V Co=2.2F Io=30mA o NJM2845_3V Load Transient Response 6 5 4 Input Voltage : VIN [V] Output Voltage : Vo [V] 3 2 1 0 -1 -2 200 3.25 3.2 Output Current Output Current : Io [mA] 3.15 3.1 3.05 3 2.95 2.9 2.85 0 40 80 120 Time : t [s] 160 @:Ta=25 C VIN=4V Co=2.2F o 900 800 700 600 500 400 300 200 100 200 Output Voltage - 10 - Ver.2005-01-20 NJM2845/46 TYPICAL CHARACTERISTICS (NJM2846) NJM2846_3.0V Output Voltage vs. Input Voltage @:Ta=25 C Co=2.2F(Ceramic) 3.2 o 3.3 4 NJM2846_3.0V Output Voltage vs. Output Current @:Ta=25o C VIN=4.0V Co=2.2F(Ceramic) 3.5 3 Output Voltage : Vo(V) Output Voltage : Vo(V) Io=200mA Io=500mA 2.9 3 3.1 3.2 3.3 3.1 2.5 Io=0A 3 2 2.9 1.5 1 2.8 0.5 2.7 2.7 2.8 0 0 500 1000 1500 2000 Input Voltage : VIN(V) Output Current : Io(mA) NJM2846_3.0V Ground Pin Current v.s. Output Current 35 0.35 o NJM2846_3.0V Dropout Voltage vs. Output Current @:Ta=25 C Co=2.2F(Ceramic) 30 0.3 Ground Pin Current : IGND (mA) 25 20 Dropout Voltage:dVI-O (V) @:Ta=25 C VIN=4.0V Co=2.2F(Ceramic) 0 200 400 600 800 1000 o 0.25 0.2 15 0.15 10 0.1 5 0.05 0 0 0 200 400 600 800 1000 Output Current : IO(mA) Output Current:Io(mA) 60 NJM2846_3.0V Control Current vs. Control Voltage @:Ta=25oC VIN=4.0V Co=2.2F(Ceramic) Io=30mA 3.5 NJM2846_3.0V Output Voltage vs. Control Voltage 50 3 Rc=0 ( A) 2.5 Output Voltage : Vo(V) 40 Cont Control Current : I 2 Rc=50k 30 1.5 Rc=100k 1 @:Ta=25 C VIN=4.0V Co=2.2F(Ceramic) Io=30mA o Rc=0 20 Rc=100k Rc=50k 10 0.5 0 0 0.5 1 1.5 2 2.5 Cont 0 3 3.5 4 0 0.5 1 1.5 2 Cont 2.5 3 Control Voltage : V (V) Control Voltage : V (V) Ver.2005-01-20 - 11 - NJM2845/46 TYPICAL CHARACTERISTICS (NJM2846) 0 NJM2846_3.0V Load Regulation vs. Output Current 2500 NJM2846_3.0V Peak Output Current vs. Input Voltage -10 2000 Load Regulation : dVo/dIo(mV) -20 -30 Peak Output Current : Io MAX(mA) @:Ta=25 oC VIN=4.0V Co=2.2F(Ceramic) 1500 -40 -50 1000 -60 500 @:Ta=25 C Co=2.2F(Ceramic) 0 o -70 -80 0 200 400 600 800 1000 4 6 8 10 12 14 Output Current : Io(mA) Input Voltage : VIN(V) NJM2846_3.0V Quiescent Current v.s. Input Voltage 2500 @:Ta=25o C Output is open. Co=2.2F(Ceramic) including Icont 100 NJM2846_3.0V Output Noise Voltage vs. Output Current @:Ta=25 C VIN=4.0V LPF:80kHz Co=2.2F(ceramic) o Output Noise Voltage : Vn( Vrms) 2000 80 Quiescent Current : IQ ( A) 1500 60 1000 40 500 20 0 0 5 10 15 0 0.001 0.01 0.1 1 10 100 1000 Input Voltage : VIN(V) Output Current : Io(mA) NJM2846_3.0V Ripple Rejection Ratio v.s. Frequency 100 Io=10mA 90 Io=0mA 100 NJM2846_3.0V Ripple Rejection vs. Output Current f=10kHz 90 Ripple Rejection Ratio : RR (dB) Ripple Rejection : RR (dB) 80 80 f=1kHz 70 70 60 Io=100mA 50 60 Io=30mA 50 40 @:Ta=25 C VIN=4.0V ein=200mVrms Co=2.2F(Ceramic) 10 100 1k 10k 100k o 40 @:Ta=25o C VIN=4.0V ein=200mVrms Co=2.2F(Ceramic) 0.01 0.1 1 10 100 1000 30 30 20 20 0.001 Frequency : f (Hz) Output Current : Io(mA) - 12 - Ver.2005-01-20 NJM2845/46 TYPICAL CHARACTERISTICS (NJM2846) NJM2846_3.0V Equivalent Serise Resistance vs. Output Current 100 @:Ta=25oC VIN=4.0V Co=2.2F 0.4 NJM2846_3.0V Dropout Voltage vs. Output Current Io=500mA Co=2.2F(Ceramic) 0.35 Equivalent Serise Resistance : ESR( ) 10 0.3 Dropout Voltage:dVI-O (V) 100 10 3 0.25 1 STABLE REGION 0.2 0.15 0.1 0.1 0.05 0.02 0.001 0.01 0.1 1 10 0 -50 0 50 100 o 150 Output Current : Io(m A) Temperature : Ta ( C) NJM2846_3.0V Control Voltage v.s. Temperature 2 @:VIN=4.0V Io=30mA Co=2.2F(Ceramic) 3.1 NJM2846_3.0V Output Voltage vs. Temperature Control Voltage :Vcont-off [V] 1.5 3.05 Output Voltage : Vo(V) 1 3 0.5 2.95 0 2.9 -50 0 50 100 o @:VIN=4.0V Io=30mA Co=2.2F(Ceramic) -50 0 50 100 o 150 150 Temperature : Ta ( C) Temperature : Ta ( C) 2000 NJM2846_3.0V Peak Output Current v.s. Temperature @:VIN=4.0V Co=2.2F(Ceramic) NJM2846_3.0V Quiescent Current v.s. Input Voltage 600 @:VIN=4.0V Output is open. Co=2.2F(Ceramic) 500 Peak Output Current: Io_peak (mA) 1500 Quiescent Current : IQ ( A) -50 0 50 100 o 400 1000 300 200 500 100 0 150 0 -50 0 50 100 o 150 Temperature : Ta ( C) Temperature : Ta ( C) Ver.2005-01-20 - 13 - NJM2845/46 TYPICAL CHARACTERISTICS (NJM2846) 0.1 NJM2846_3.0V Line Regulation vs. Temperature 0.03 NJM2846_3.0V Load Regulation vs. Temperature @:VIN=4.0V Io=0-800mA Co=2.2F(Ceramic) 0.025 Line Regulation : dVo/dIo(%/V) 0.05 Load Regulation : dVo/dIo(%/mA) @:VIN=4.0-9.0V Io=30mA Co=2.2F(Ceramic) -50 0 50 o 0.02 0 0.015 0.01 -0.05 0.005 -0.1 100 150 0 -50 0 50 Temperature : Ta ( C) Temperature : Ta ( C) o 100 150 4 NJM2846_3.0V Output Voltage vs. Temperature 1000 NJM2846_3.0V Short Circuit Current v.s. Temperature @:VIN=4.0V Co=2.2F(Ceramic) Output is short to ground. 3.5 800 2.5 Short Circuit Current : Isc (mA) @:VIN=4.0V Io=30mA Co=2.2F(Ceramic) -50 0 50 100 o 3 Output Voltage : Vo(V) 600 2 1.5 400 1 200 0.5 0 0 150 200 -50 0 50 100 150 Temperature : Ta ( C) Temperature : Ta (oC) NJM2846_3.0V ON/OFF Transient Response without Load 7 6 Control Voltage Control Voltage : Vo [V] 5 Output Voltage : Vo [V] 4 Output Voltage 3 2 1 0 -1 0 1 2 3 Time : t [S] 4 5 @:Ta=25 C VIN=4.0V Co=2.2uF(Ceramic) Io=0mA o NJM2846_3.0V ON/OFF Transient Response without Load 10 5 0 -5 -10 -15 -20 -25 -30 7 6 Control Voltage Output Voltage : Vo [V] Control Voltage : Vo [V] 5 4 Output Voltage 3 2 1 0 -1 0 4 8 12 Time : t [mS] 16 20 @:Ta=25 C VIN=4.0V Co=2.2uF(Ceramic) Io=30mA o 10 5 0 -5 -10 -15 -20 -25 -30 - 14 - Ver.2005-01-20 NJM2845/46 TYPICAL CHARACTERISTICS (NJM2846) NJM2846_3V Line Transient Response 3.1 3.08 Input Voltage 3.06 Output Voltage : Vo [V] 3.04 Output Voltage 3.02 3 2.98 2.96 2.94 0 40 80 120 Time : t [s] 160 @:Ta=25 C VIN=4V Co=2.2F Io=30mA o NJM2846_3V Load Transient Response 6 5 4 Input Voltage : VIN [V] Output Voltage : Vo [V] 3 2 1 0 -1 -2 200 3.25 3.2 Output Current Output Current : Io [mA] 3.15 3.1 3.05 3 2.95 2.9 2.85 0 40 80 120 Time : t [s] 160 @:Ta=25 C VIN=4V Co=2.2F o 900 800 700 600 500 400 300 200 100 200 Output Voltage [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 - |
Price & Availability of NJM2845DL1
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |