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NJU7781 Dataheets PDF



Part Number NJU7781
Manufacturers New Japan Radio
Logo New Japan Radio
Description LOW DROPOUT VOLTAGE REGULATOR
Datasheet NJU7781 DatasheetNJU7781 Datasheet (PDF)

NJU7780/81 LOW DROPOUT VOLTAGE REGULATOR GENERAL DESCRIPTION The NJU7780/81 is a low dropout voltage regulator with ON/OFF Control. Advanced CMOS technology achieves low quiescent current. It is suitable for battery operating applications. NJU7781 features shunt switch which improves turn off response of output voltage when ON/OFF control is used. FEATURES High Ripple Rejection 65dB typ. (f=400Hz, Vo=3V) Low quiescent Current Iq=20μA (Io=0mA, VCONT=VIN) Output capacitor with 1.0μF cerami.

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NJU7780/81 LOW DROPOUT VOLTAGE REGULATOR GENERAL DESCRIPTION The NJU7780/81 is a low dropout voltage regulator with ON/OFF Control. Advanced CMOS technology achieves low quiescent current. It is suitable for battery operating applications. NJU7781 features shunt switch which improves turn off response of output voltage when ON/OFF control is used. FEATURES High Ripple Rejection 65dB typ. (f=400Hz, Vo=3V) Low quiescent Current Iq=20μA (Io=0mA, VCONT=VIN) Output capacitor with 1.0μF ceramic capacitor Output Current Io(max)=300mA High Precision Output Vo±1.0% Low Dropout Voltage 0.15V typ. (Io=150mA,Vo=3.0V) ON/OFF Control (Active High) Shunt Switch Only NJU7781 Internal Over Current Protection Internal Thermal Overload Protection CMOS technology Package outline SOT-89-5 PIN CONFIGURATION PACKAGE OUTLINE NJU7780/81U1 CONTROL 1 GND 2 NC 3 5 VIN 2 GND 4 VOUT BLOCK DIAGRAM VIN CONTROL Output Control Thermal Protection VOUT VIN CONTROL Output Control Thermal Protection VOUT GND Current Vref Limit NJU7780 GND Current Vref Limit NJU7781 Ver.2015-11-16 -1- NJU7780/81 OUTPUT VOLTAGE RANK LIST Device Name NJU778xU1-15 NJU778xU1-18 VOUT 1.5V 1.8V NJU778xU1-21 NJU778xU1-25 2.1V 2.5V Device Name NJU778xU1-28 NJU778xU1-29 NJU778xU1-03 NJU778xU1-33 VOUT 2.8V 2.9V 3.0V 3.3V Device Name NJU778xU1-04 NJU778xU1-05 VOUT 4.0V 5.0V ABSOLUTE MAXIMUM RATINGS (Ta=25 C) PARAMETER SYMBOL RATINGS UNIT Input Voltage Control Voltage Power Dissipation Operating Temperature Storage Temperature OFF-state Output Sink Current (*5) VIN VCONT PD Topr Tstg Io +10 +10(*1) 350(*2) 500(*3) 765(*4) 40 +85 40 +125 10 V V mW C C mA (*1): When input voltage is less than +10V, the absolute maximum control voltage is equal to the input voltage. (*2): Device itself. (*3): Mounted on glass epoxy board. (76.2 114.3 1.6mm:based on EIA/JDEC standard size, 2Layers, Cu area 100mm2) (*4): Mounted on glass epoxy board. (76.2 114.3 1.6mm:based on EIA/JDEC standard, 4Layers) (For 4Layers: Applying 74.2 74.2mm inner Cu area and a thermal via hole to a board based on JEDEC standard JESD51-5) (*5): This maximum rating is applied to NJU7781. Input Voltage Range VIN=+2.3 +9V (In case of Vo<2.1V version) -2- Ver.2015-11-16 NJU7780/81 ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.1μF, Co=0.1μF, Ta=25 C) PARAMETER SYMBOL TEST CONDITION MIN. Output Voltage Vo Io=30mA -1.0% Input Voltage VIN - Quiescent Current Quiescent Current at Control OFF Output Current IQ IQ(OFF) Io Io=0mA, VCONT=VIN VCONT=0V Vo - 0.1V(Vo<2.1V) Vo - 0.3V(Vo 2.1V) - 300 Short Current Limit Line Regulation Load Regulation ILIM Vo/ VIN Vo/ Io Vo=0V VIN=Vo+1V Vo+6V(Vo<3.0), VIN=Vo+1V Vo+9V(Vo≥3.0), Io=30mA Io=0 300mA - 2.1 ≤ VO ≤ 2.6V - Dropout Voltage(*6) ΔVI-O IO=150mA 2.7 ≤ VO ≤ 3.3V 3.4 ≤ VO ≤ 5.0V - Ripple Rejection Average Temperature Coefficient of Output Voltage RR Vo/ Ta ein=200mVrms, f=400Hz, IO=10mA, VO=3.0V Ta=0 85 C, Io=10mA - Output Noise Voltage VNO f=10Hz 80kHz, IO=10mA, VO=3.0V - Pull-Down Resistance RCONT 1.5 Control Voltage for ON-state VCONT(ON) 1.6 Control Voltage for OFF-state Pull-down Resistance at OFF-state(*7) VCONT(OFF) RO(OFF) VCONT=0V (VO=3.0V Version) – (*6): The output voltage excludes under 2.1V. (*7) This electrical characteristics is applied to NJU7781. 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. TYP. 20 - - 120 - 0.18 0.15 0.12 65 100 80 5 - 190 MAX. +1.0% 9 40 1 UNIT V V μA μA - - 0.10 0.015 0.25 0.22 0.2 - - 10 0.3 – mA mA %/V %/mA V dB ppm/ C Vrms MΩ V V Ver.2015-11-16 -3- NJU7780/81 THERMAL CHARACTERISTICS PARAMETER SYMBOL VALUE UNIT Junction-to-ambient thermal resistance ja 200 (*8) 130 (*9) C/W Junction-to-Top of package characterization parameter jt 67 (*8) 65 (*9) C/W (*8): Mounted on glass epoxy board. (76.2 114.3 1.6mm:based on EIA/JDEC standard size, 2Layers, Cu area 100mm2) (*9): Mounted on glass epoxy board. (76.2 114.3 1.6mm:based on EIA/JDEC standard, 4Layers) (For 4Layers: Applying 74.2 74.2mm inner Cu area and a thermal via hole to a board based on JEDEC standard JESD51-5) POWER DISSIPATION vs. AMBIENT TEMPERATURE Power Dissipation PD(mW) 1000 90 0 80 0 70 0 60 0 50 0 40 0 30 0 20 0 10 0 0 -5 0 NJU7780/81U1 PowerDissipation (Topr=-40~+85°C,Tj=125°C) on 4 layers board on 2 layers board Device itself -25 0 25 50 Temperature : Ta( C) 75 100 -4- Ver.2015-11-16 TEST CIRCUIT I IN A V IN VIN VOUT CIN 0.1 F NJU778* A ICONT CONTROL V VCONT GND NJU7780/81 C0 1.0 F*10 (ceramic) VI OUT V OUT *8 : Vo 2.0V version, Co=2.2μF(Ceramic) TYPICAL APPLICATION In the case where ON/OFF Control is not required: VIN VIN V OUT CIN 0.1 F NJU778* CONTROL GND *11: Vo 2.0V version, Co=2.2μF Connect control pin to VIN pin In use of ON/OFF CONTROL: V IN CIN 0.1 F .


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