NJM2387/89 ADJUSTABLE LOW DROPOUT VOLTAGE REGULATOR GENERAL DESCRIPTION The NJM2387/89 are adjustable low dropout voltage regulators . The output current is up to 1.0A and dropout voltage is 0.2V typ. at Io=0.5A. NJM2387 has ON/OFF control circuit and enable to reduce quiescent current. The NJM2387/89 is suitable for power module, TV, Display, car stereo and low power applications. PACKAGE OUTLINE NJM2387DL2 NJM2387DL3 NJM2389F FEATURE Low Dropout Voltage ∆VI-O=0.2V typ. at Io=0.5A Output Current Io(max.)=1.0A Reference Voltage Vref=1.26V ± 2% ON/OFF Control (Active High : Only NJM2387) Internal Short Circuit Current Limit Internal Thermal Overload Protection Bipolar Technology Package Outline TO-252-5(NJM2387), TO-220F-4(NJM2389) PIN CONFIGURATION 3 3 123 45 123 45 NJM2387DL2 PIN FUNCTION 1.VIN 2.ON/OFF CONTROL 3.VOUT 4.VADJ 5.GND NJM2387DL3 PIN FUNCTION 1. VIN 2. VOUT 3. GND 4. VADJ 123 4 NJM2389F EQUIVALENT CIRCUIT VIN VOUT VIN Bandgap Reference Control Bandgap Reference ON/OFF control VADJ Over Voltage Protection VADJ Thermal Over Current Protection Protection GND Over Voltage Protection Thermal Over Current Protection Protection GND NJM2387DL2/DL3 Ver.2004-12-22 VOUT NJM2389F -1- NJM2387/89 ABSOLUTE MAXIMUM RATINGS PARAMETER Input Voltage Control Voltage Adjust Terminal Voltage Output Current (Ta=25°C) SYMBOL RATINGS UNIT VIN +35 V VCONT +35(*1) V VADJ +6 V Io 1.0 A NJM2387 10(Tc≤25°C) / 1(Ta≤25°C) W Power Dissipation PD NJM2389 18(Tc<50°C) Operating Junction Temperature Range Tj -40 ∼ +150 °C Operating Temperature Range Topr -40 ∼ +85 °C Storage Temperature Range Tstg -50 ∼ +150 °C (*1): This applies for NJM2387. When input voltage is less than +35V, the absolute maximum control voltage is equal to the input voltage. NJM2387 ELECTRICAL CHARACTERISTICS (VIN=15V, VO=10V, Io=0.5A, R1=1kΩ, CIN=0.33µF, Co=22µF, Ta=25°C) Measurement is to be conducted is pulse testing. PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT Input Voltage VIN 3.8 35 V Output Voltage VOUT 1.5 20 V Reference Voltage Vref 1.235 1.26 1.285 V Line Regulation 0.04 0.16 %/V ∆Vo/∆VIN VIN=VO+1V ∼ VO+17V Load Regulation 0.2 1.4 %/A ∆Vo/∆Io VIN=VO+2V,Io=0A ∼ 1.0A Average Temperature ∆Vo/∆T Tj=0 ∼ +125°C ± 0.02 %/°C Coefficient of Output Voltage Quiescent Current IQ Io=0A 5 mA Dropout Voltage Io=0.5A 0.2 0.5 V ∆VI-O Vin=Vo+2V, ein=0.5Vrms Ripple Rejection RR 52 65 dB ein=0.5Vrms, f=120Hz ON Control Voltage VCONT(ON) 2.0(*2) V OFF Control Voltage VCONT(OFF) 0.4 V ON Control Current VC=2.7V 20 ICONT(ON) µA OFF Control Current -20 ICONT(OFF) VC=0.4V µA (*2): When ON/OFF CONTROL Terminal is open, Output Voltage is ON. POWER DISSIPATION vs. AMBIENT TEMPERATURE NJM2387DL2 (Topr=-40~+85°C,Tj=+150°C,PD=10W(TC≤25°C),PD=1W(Ta≤25°C)) Power Dissipation PD(W) 12 10 Infinuit 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) -2- Ver.2004-12-22 NJM2387/89 TEST CIRCUIT VIN NJM2387 GND VIN VOUT R2 + + IQ 0.33µF Io A VADJ Control Ic A A V Vo 22µF R1 RL 1kΩ Vc Vo = Vref × (1 + R2/R1) TYPICAL APPLICATION 1 In the case where ON/OFF Control is not required: VIN VIN V OUT V OUT + + 0.33µ F 22µF R2 NJM2387 VADJ CONTROL GND R1 1kΩ Connect control terminal to VIN terminal or open. 2 In use of ON/OFF CONTROL: VIN VIN V OUT V OUT + + 0.33µ F RC R2 NJM2387 CONTROL GND 22µ F VADJ R1 1kΩ State of control terminal: •“H” or “open” → output is enabled. •“L” → output is disabled. Ver.2004-12-22 -3- NJM2387/89 NJM2389 ELECTRICAL CHARACTERISTICS (VIN=15V, VO=10V, Io=0.5A, R1=1kΩ, CIN=0.33µF, Co=22µF, Ta=25°C) Measurement is to be conducted is pulse testing. PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT Input Voltage VIN 3.8 35 V Output Voltage VOUT 1.5 20 V Reference Voltage Vref 1.235 1.26 1.285 V Line Regulation 0.04 0.16 %/V ∆Vo/∆VIN VIN=VO+1V ∼ VO+17V Load Regulation 0.2 1.4 %/A ∆Vo/∆Io VIN=VO+2V,Io=0A ∼ 1.0A Average Temperature ∆Vo/∆T Tj=0 ∼ +125°C ± 0.02 %/°C Coefficient of Output Voltage Quiescent Current IQ Io=0A 5 mA Dropout Voltage Io=0.5A 0.2 0.5 V ∆VI-O Vin=Vo+2V, ein=0.5Vrms Ripple Rejection RR 52 65 dB ein=0.5Vrms, f=120Hz THERMAL CHARACTERISTICS Thermal Resistance Junction-to-Ambient Temperature Junction to case θja θjc 60 5 °C/W POWER DISSIPATION vs. AMBIENT TEMPERATURE NJM2389F Power Dissipation PD(W) (Topr=-40~+85°C,Tj=+150°C,PD=18W(TC<50°C)) 20 18 16 14 12 10 8 6 4 2 0 Infinuit Heat Sink Without Heat Sink -50 -25 0 25 50 75 100 Ambient Temperature Ta(°C) -4- Ver.2004-12-22 NJM2387/89 TEST CIRCUIT VIN NJM2389 GND VIN VOUT R2 + + 0.33µF Io A VADJ IQ A Vref V R1 22µF V Vo RL 1kΩ Vo = Vref × (1 + R2/R1) Ver.2004-12-22 -5- NJM2387/89 TYPICAL CHARACTERISTICS NJM2387/89_10V Output Voltage vs. Input Voltage 11 NJM2387/89_10V Output Voltage vs. Output Current 12 o @:Ta=25 C Co=22µF o @:Ta=25 C Co=22 µF 10 (V)) Output Volta ge : Vo (V Output Voltage : Vo(V) 10.5 Io=0A 10 9.5 8 VIN=22V 6 VIN=35V 4 VIN=11V 2 Io=0.5A Io=1A 9 9 9.5 10 10.5 0 11 0 0.5 1 NJM2387/89_10V Ground Pin Current v.s. Output Current 30 1.5 2 2.5 Output Current : Io(A) Input Voltage : V I N(V) NJM2387/89_10V Dropout Voltage vs. Output Current 1 o 0.8 Dropout Voltage:dV I-O (V) Ground Pin Current : I GND (mA) 25 @:Ta=25 C Co=22 υF R1=1kΩ R2=6.94k Ω 20 15 10 o @:Ta=25 C VIN=11V Co=22 µF R1=1k Ω R2=6.94k Ω 5 0.6 0.4 0.2 0 0 0 500 1000 0 1500 500 Output Current : I O(mA) NJM2387/89_10V Control Current vs. Control Voltage 0 10 Rc=0Ω Cont Vo(V (V (V)) Output Voltage : Vo -0.5 -1 -1.5 8 Rc=50kΩ 6 Rc=100kΩ 4 Rc=100kΩ o Rc=50kΩ @:Ta=25 C Vin=11V Co=22µF(Ceramic) Io=500mA 2 Rc=0Ω -2 0 0.5 1 1.5 2 2.5 Control Voltage : V (V) Cont Cont -6- 1500 NJM2387/89_10V Output Voltage vs. Control Voltage 12 @:Ta=25 oC V IN=11V Co=22 µF(Ceramic) Io=500mA Control Current : I (µ A) Cont 1000 Output Current:Io(mA) 3 3.5 0 0 0.5 1 1.5 2 Control Voltage : V (V) Co nt Co nt Ver.2004-12-22 NJM2387/89 TYPICAL CHARACTERISTICS NJM2387/89_10V Load Regulation vs. Output Current 3 2 2500 Peak Output Current : IoMAX(mA) Load Regulation : dVo-Io(%/A) NJM2387/89_10V Peak Output Current vs. Input Voltage 3000 1 0 -1 o @:Ta=25 C Vin=12V Co=22 µF R1=1k Ω R2=6.94k Ω -2 2000 1500 1000 o @:Ta=25 C R1=1k Ω R2=14.9k Ω Co=22µF 500 -3 0 500 1000 0 1500 10 15 20 Output Current : Io(mA) 25 30 NJM2387/89_10V Quiescent Current v.s. Input Voltage NJM2387/89_10V Output Noise Voltage vs. Output Current 500 50 o @:Ta=25 C VIN=15V LPF:80kHz Co=22µF o @:Ta=25 C Output is open. Co=22 µF Output Noise Voltage : Vn(µ Vrms) Quiescent Current : IQ (mA) 40 30 20 10 400 300 200 100 0 0 0 5 10 15 20 25 30 35 0.01 10 0.1 100 Input Voltage : VIN(V) 100 90 90 NJM2387/89_10V Ripple Rejection vs. Output Current 80 80 Io=0A 70 Io=0.1A 60 Io=0.5A 50 40 Ripple Rejection : RR (dB) Ripple Rejection Ratio : RR (dB) 100 70 60 50 40 o @:Ta=25 C VIN=12V ein=500mVrms Co=22µF 30 10 10 100 100 30 1k 1000 Frequency : f (Hz) Ver.2004-12-22 1 1000 Output Current : Io(A) NJM2387/89_10V Ripple Rejection Ratio v.s. Frequency 20 35 Input Voltage : VIN(V) 4 10k 10 5 100k 10 o @:Ta=25 C VIN=12V ein=500mVrms f=120Hz Co=22µF(Ceramic) 20 0.001 0.01 0.1 1 10 100 1000 Output Current : Io(mA) -7- NJM2387/89 TYPICAL CHARACTERISTICS NJM2387/89_10V Output Noise Peak Value of Spectrum vs Output Current 0.3 1000 NJM2387/89_10V Dropout Voltage vs. Temperature o @:Ta=25 C Co=22µF V =11V ESR=0.1Ω 0.25 Output Noise Peak Value of Spectrum : Vn_peak(µ µ V) IN 800 I-O Dropout Voltage : dV (V) ESR=0.2Ω 600 ESR=0.5Ω 400 0.2 0.15 0.1 ESR=1Ω 200 0.05 @:Io=0.5A Co=22µF ESR=100Ω 0 -6 10 10 -5 0.0001 0.001 0.01 0.1 0 -50 1 0 @:VIN=11V Io=0.5A Co=22µF Output Voltage : Vo(V) Control Voltage :Vcont-off [V] 10.2 1.5 1 10 9.8 0.5 9.6 -50 0 50 100 150 -50 o 0 150 NJM2387/89_10V Quiescent Current vs. Input Voltage 3 2.5 2000 Quiescent Current : IQ (mA) Output Peak Current : Io_peak (mA) 100 Temperature : Ta ( C) NJM2387/89_10V Output Peak Current v.s. Temperature 2500 50 o Temperature : Ta ( C) 1500 1000 500 2 1.5 1 0.5 @:VIN=11V Output is open. Co=22µF @:VIN=11V Co=22µF 0 0 -50 0 50 100 o Temperature : Ta ( C) -8- 150 NJM2387/89_10V Output Voltage vs. Temperature 10.4 @:VIN=11V Io=0.5A Co=22µF 0 100 o NJM2387/89_10V Control Voltage vs. Temperature 2 50 Temperature : Ta ( C) Output Current : Io(A) 150 -50 0 50 100 150 o Temperature : Ta ( C) Ver.2004-12-22 NJM2387/89 TYPICAL CHARACTERISTICS NJM2387/89_10V Line Regulation vs. Temperature 0.1 NJM2387/89_10V Load Regulation vs. Temperature 1 @:VIN=12V Io=0-1A Co=22µF Road Regulation : dVo/dIo(%/A) 0.05 0 -0.05 -0.1 -50 0 50 o 100 0.5 0 -0.5 -1 -50 150 0 50 NJM2387/89_10V Short Circuit Current vs. Temperature 500 @: VIN=11V Co=22µF Output is short to ground. @:VIN=11V Io=0.5A Co=22µF Short Circuit Current : Isc (mA) Output Voltage : Vo(V) 10 8 6 4 400 300 200 100 2 0 0 -50 0 50 100 150 200 -50 0 o 16 10 14 0 12 -10 10 Output Voltage 8 -20 6 -30 @:Ta=25oC VDD=11V Co=22µF Io=0mA 0 0 1 2 3 Time : t [S] 4 5 Output Voltage : Vo [V] Output Voltage : Vo [V] 12 20 Control Voltage : Vo [V] Control Voltage 2 150 NJM2387/89_10V ON/OFF Transient Response 16 4 100 Temperature : Ta ( C) NJM2387/89_10V ON/OFF Transient Response without Load 14 50 o Temperature : Ta ( C) Ver.2004-12-22 150 Temperature : Ta ( C) NJM2387/89_10V Output Voltage vs. Temperature 12 100 o Temperature : Ta ( C) 20 10 Control Voltage 0 -10 10 Output Voltage -20 8 -30 6 -40 4 -50 2 -60 0 @:Ta=25oC VDD=11V Io=500mA Control Voltage : Vo [V] Line Regulation : dVo/dIo(%/V) @:VIN=11-27V Io=0.5A Co=22µF -40 -50 -60 0 4 8 12 Time : t [mS] 16 20 -9- NJM2387/89 TYPICAL CHARACTERISTICS NJM2387/89_10V Input Transient Response 10.5 10.2 12 10.4 10.1 8 10.05 6 Output Voltage 10 4 o @:Ta=25 C VDD=11V Co=22µF Io=500mA 9.95 9.9 2 9.85 0 40 80 120 Time : t [uS] 160 200 600 Output Current Output Voltage : Vo [V] 10 Input Voltage 700 10.3 500 10.2 400 300 10.1 Output Voltage 200 10 9.9 0 9.8 -2 9.7 100 o @:Ta=25 C VDD=11V Co=22µF Io=450mA Output Current : Io [mA] 14 Input Voltage : VIN [V] 10.25 10.15 Output Voltage : Vo [V] NJM2387/89_10V Load Transient Response 0 -100 0 40 80 120 Time : t [uS] 160 200 [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. - 10 - Ver.2004-12-22