NJM2845 New Japan Radio Co., Ltd., NJM2845 Datasheet
NJM2845
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NJM2845 Summary of contents
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... 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. FEATURES High Ripple Rejection Output Noise Voltage Output capacitor with 2 ...
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... P D Operating Topr Temperature Storage Tstg Temperature (*1): When input voltage is less than +14V, the absolute maximum control voltage is equal to the input voltage. Operating voltage V =+2.5V(In case of Vo<2.3V) ~ +(Vo+10V) IN NJM2845 ELECTRICAL CHARACTERISTICS (V PARAMETER SYMBOL Output Voltage Vo Quiescent Current I Q Output Current Io Line Regulation Vo/ V Load Regulation ...
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... TYPICAL APPLICATION 2.6V version: Co=4.7 F Ver.2005-01-20 NJM2846DL3 =10W(T 25°C), =5°C/W HS =10°C/W HS =20°C Ambient Temperature Ta(° OUT NJM2845 0.33 F GND NJM2845 0.33 F GND NJM2845/46 =1W(Ta 25°C)) D Heat Sink 50 75 100 V I OUT *3 2.2 F (ceramic) V OUT OUT *4 2 ...
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... NJM2845/46 NJM2846 ELECTRICAL CHARACTERISTICS (V PARAMETER Output Voltage Quiescent Current Quiescent Current at Control OFF Line Regulation Line Regulation Load Regulation Dropout Voltage(*5) Ripple Rejection Average Temperature Coefficient of Output Voltage Output Noise Voltage Control Current Control Voltage for ON-state Control Voltage for OFF-state (*5): The output voltage excludes under 2 ...
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... TEST CIRCUIT CONT *6 Vo 2.6V version: Co=4.7 F(ceramic) Ver.2005-01- OUT NJM2846 0. CONT A CONTROL GND NJM2845/ OUT OU *6 2.2 F (ceramic ...
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... NJM2845/46 TYPICAL APPLICATION 1 In the case where ON/OFF Control is not required (0～300k ) *7 Vo 2.6V version: Co=4.7 F Connect control terminal to V 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”. ...
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... TYPICAL CHARACTERISTICS (NJM2845) NJM2845_3.0V Output Voltage vs. Input Voltage 3.3 3.2 3.1 Io=0A 3 2.9 2.8 2.7 2.7 2.8 2.9 Input Voltage : V NJM2845_3.0V Ground Pin Current vs. Output Current 200 400 Output Current : I NJM2845_3.0V Load Regulation vs. Output Current 0 -10 -20 -30 -40 -50 -60 -70 o @:Ta= =4.0V IN Co=2.2 F(Ceramic) -80 0 200 400 Output Current : Io(m A) Ver ...
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... NJM2845/46 TYPICAL CHARACTERISTICS (NJM2845) NJM2845_3.0V Quiescent Current vs. Input Voltage 2500 2000 1500 1000 500 Input Voltage : V NJM2845_3.0V Ripple Rejection Ratio vs. Frequency 100 Io=10mA Io=100mA @:Ta= = ein=200mVrms Co=2.2 F(Ceramic 100 10 100 1000 Frequency : f (Hz) NJM2845_3.0V Equivalent Serise Resistance vs. Output Current ...
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... TYPICAL CHARACTERISTICS (NJM2845) NJM2845_3.0V Output Voltage vs. Temperature 3.1 3.05 3 2.95 @:VIN=4.0V Io=30mA (Ceramic) Co=2.2 F 2.9 -50 0 Temperature : Ta ( NJM2845_3.0V Quiescent Current v.s. Input Voltage 600 500 400 300 200 100 0 -50 0 Temperature : Ta ( NJM2845_3.0V Load Regulation vs. Temperature 0.03 0.025 0.02 0.015 0.01 0.005 0 -50 0 Temperature : Ta ( Ver.2005-01-20 50 100 150 o C) @:V =4.0V IN Output is open. ...
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... NJM2845/46 TYPICAL CHARACTERISTICS (NJM2845) NJM2845_3.0V Short Circuit Current v.s. Temperature 1000 800 600 400 200 0 - Temperature : Ta ( NJM2845_3V Line Transient Response 3.1 3.08 Input Voltage 3.06 3.04 Output Voltage 3.02 3 2.98 o @:Ta= =4V IN Co=2.2 F 2.96 Io=30mA 2. Time : @:V =4.0V IN (Ceramic) Co=2.2 F Output is short to ground. 100 150 200 o C) ...
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... Io=200mA Io=500mA 3 3.1 3.2 3.3 ( @:Ta= =4.0V IN Co=2.2 F(Ceramic) 600 800 1000 (mA @:Ta= =4.0V IN Co=2.2 F(Ceramic) Io=30mA Rc=0 Rc=50k 2 2.5 3 3.5 4 (V) Cont NJM2845/46 NJM2846_3.0V Output Voltage vs. Output Current 4 o @:Ta= =4.0V IN 3.5 Co=2.2 F(Ceramic) 3 2.5 2 1 500 1000 1500 Output Current : Io(mA) NJM2846_3.0V Dropout Voltage vs. Output Current 0.35 o @:Ta=25 C Co=2.2 F(Ceramic) 0.3 0.25 0.2 0.15 0.1 0.05 ...
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... NJM2845/46 TYPICAL CHARACTERISTICS (NJM2846) NJM2846_3.0V Load Regulation vs. Output Current 0 -10 -20 -30 -40 -50 -60 o @:Ta=25 C -70 V =4.0V IN Co=2.2 F(Ceramic) -80 0 200 400 Output Current : Io(mA) NJM2846_3.0V Quiescent Current v.s. Input Voltage 2500 2000 1500 1000 500 Input Voltage : V NJM2846_3.0V Ripple Rejection Ratio v.s. Frequency 100 Io=10mA ...
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... Temperature : Ta ( Ver.2005-01- 100 10 @:V =4.0V IN Io=30mA Co=2.2 F(Ceramic) 50 100 150 o C) @:V =4.0V IN (Ceramic) Co=2 100 150 o C) NJM2845/46 NJM2846_3.0V Dropout Voltage vs. Output Current 0.4 Io=500mA Co=2.2 F(Ceramic) 0.35 0.3 0.25 0.2 0.15 0.1 0. 100 o Temperature : NJM2846_3.0V Output Voltage vs. Temperature 3.1 3.05 3 2.95 @:V =4.0V IN Io=30mA (Ceramic) Co=2.2 F 2.9 ...
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... NJM2845/46 TYPICAL CHARACTERISTICS (NJM2846) NJM2846_3.0V Line Regulation vs. Temperature 0.1 0.05 0 -0.05 @:V =4.0-9.0V IN Io=30mA (Ceramic) Co=2.2 F -0.1 -50 0 Temperature : Ta ( NJM2846_3.0V Output Voltage vs. Temperature 4 3.5 3 2.5 2 1.5 1 0.5 @:V =4.0V IN Io=30mA (Ceramic) Co=2 - Temperature : Ta ( NJM2846_3.0V ON/OFF Transient Response without Load 7 6 Control Voltage 5 4 Output Voltage @:Ta= =4.0V IN Co=2.2uF(Ceramic) ...
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... C V =4V IN Co=2.2 F 2.96 Io=30mA 2. Time : Ver.2005-01- 120 160 200 NJM2845/46 NJM2846_3V Load Transient Response 3.25 3.2 Output Current 3.15 3.1 3.05 3 Output Voltage 2.95 @:Ta=25 V 2.9 Co=2 120 160 Time : [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions ...