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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 cellular phone and other portable items. When the ON/OFF control is used, NJU7781 has high transition response characteristics for shunt switch. FEATURES High Ripple Rejection 65dB typ. (f=400Hz, Vo=3V) Low quiescent Current Iq=20A (Io=0mA, VCONT=VIN) Output capacitor with 1.0F ceramic capacitor Output Current Io(max)=300mA High Precision Output Vo1.0% Low Dropout Voltage 0.15V typ. (Io=150mA,Vo=3.0V) ON/OFF Control (Active High) Shunt Switch Only NJU7781 Internal Short Circuit Current Limit Internal Thermal Overload Protection CMOS technology Package outline SOT-89-5 PIN CONFIGURATION 5 2 4 PACKAGE OUTLINE NJU7780/81U1 1. CONTROL 2. GND 3. N.C. 4. VOUT 1 2 3 5. VIN EQUIVALENT CIRCUIT VIN Thermal Protection VOUT VIN Thermal Protection VOUT CONTROL Output Control CONTROL Output Control Vref Current Limit Vref Current Limit GND GND NJU7780 NJU7781 Ver.2004-12-22 -1- NJU7780/81 OUTPUT VOLTAGE RANK LIST (1.5V~5.0V : 0.1V step) Device Name VOUT NJU778xU1-21 2.1V NJU778xU1-25 2.5V NJU778xU1-03 3.0V NJU778xU1-33 3.3V NJU778xU1-05 5.0V ABSOLUTE MAXIMUM RATINGS (Ta=25C) PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN +10 V Control Voltage VCONT +10(*1) V Power Dissipation PD 350(*2) mW Operating Temperature Topr -40 +85 C Storage Temperature Tstg -40 +125 C OFF-state Io 10 mA Output Sink Current (*3) (*1): When input voltage is less than +10V, the absolute maximum control voltage is equal to the input voltage. (*2): Device itself. (*3): This maximum rating is applied to NJU7781. ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.1F, Co=0.1F, Ta=25C) PARAMETER SYMBOL Output Voltage Input Voltage Quiescent Current Quiescent Current at Control OFF Output Current Short Current Limit Line Regulation Load Regulation Dropout Voltage Ripple Rejection Average Temperature Coefficient of Output Voltage Output Noise Voltage Pull-Down Resistance Control Voltage for ON-state Control Voltage for OFF-state Vo VIN IQ IQ(OFF) Io ILIM Vo/VIN Vo/Io VI-O RR Vo/Ta VNO RCONT VCONT(ON) VCONT(OFF) Io=0mA, VCONT=VIN VCONT=0V Vo-0.3V Vo=0V VIN=Vo+1VVo+6V(3.0>Vo), VIN=Vo+1VVo+9V(3.0Vo), Io=30mA Io=0300mA 2.1 VO 2.6V IO=150mA 2.7 VO 3.3V 3.4 VO 5.0V TEST CONDITION Io=30mA MIN. -1.0% 300 1.5 1.6 - TYP. 20 120 0.18 0.15 0.12 65 100 80 5 - MAX. +1.0% 9 40 1 0.10 0.015 0.25 0.22 0.2 10 0.3 UNIT V V A A mA mA %/V %/mA V dB ppm/ C Vrms M V V ein=200mVrms, f=400Hz, IO=10mA, VO=3.0V Ta=085C, Io=10mA F=10Hz80kHz, IO=10mA, VO=3.0V 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- Ver.2004-12-22 NJU7780/81 TEST CIRCUIT I IN VIN CIN 0.1F VOUT C0 1.0F (ceramic) I OUT A V IN V V OUT NJU778* A V V CONT I CONT CONTROL GND TYPICAL APPLICATION 1 In the case where ON/OFF Control is not required: V IN VIN CIN 0.1F VOUT C0 1.0F V OUT NJU778* CONTROL GND Connect control terminal to VIN terminal 2 In use of ON/OFF CONTROL: V IN V OUT C0 0.1F VIN CIN 0.1F VOUT NJU778* CONTROL GND State of control terminal: *"H" output is enabled. *"L" or "open" output is disabled. Ver.2004-12-22 -3- NJU7780/81 ELECTRICAL CHARACTERISTICS 3.2 NJU7780/81_3.0V Output Voltage vs. Input Voltage @:Ta=25 C Co=1.0F(Ceramic) o 4 NJU7780/81_3.0V Output Voltage vs. Output Current 3.5 3.1 3 Output Voltage : Vo(V) 3 Io=0A Output Voltage : Vo(V) 2.5 2 2.9 Io=30mA 1.5 1 2.8 Io=100mA 0.5 @:Ta=25 C VIN=4.0V Co=1.0F(Ceramic) 0 100 200 300 400 500 600 700 o 2.7 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 0 Input Voltage : VIN(V) Output Current : Io(mA) NJU7780/81_3.0V Ground Pin Current v.s. Output Current 70 @:Ta=25 C VIN=4.0V Co=1.0F(Ceramic) 0.4 o 0.5 o NJU7780/81_3.0V Dropout Voltage vs. Output Current @:Ta=25 C Co=1.0F(Ceramic) 60 Ground Pin Current : IGND (uA) Dropout Voltage:dVI-O (V) 50 40 0.3 30 0.2 20 0.1 10 0 0 50 100 150 200 250 300 350 400 0 0 50 100 150 200 250 300 350 400 Output Current : IO(mA) Output Current:Io(mA) 4 NJU7780/81_3.0V Output Voltage vs. Control Voltage NJU7780/81_3.0V Output Noise Voltage vs. Output Current 140 3.5 120 3 Output Noise Voltage : Vn( Vrms) 100 Output Voltage : Vo(V) 2.5 80 2 60 1.5 1 @:Ta=25 C VIN=4.0V Co=1.0F(Ceramic) Io=30mA 0 0.5 1 1.5 2 2.5 3 o 40 @:Ta=25 C VIN=4.0V LPF:80kHz Cin=0.1F Co=1.0F(Ceramic) 0.01 0.1 1 10 100 o 0.5 20 0 0 0.001 Control Voltage : Vcont(V) Output Current : Io(mA) -4- Ver.2004-12-22 NJU7780/81 ELECTRICAL CHARACTERISTICS 100 NJU7780/81_3.0V Ripple Rejection vs. Output Current @:Ta=25 C VIN=4.0V ein=200mVrms Co=1.0F(Ceramic) o NJU7780/81_3.0V Equivalent Serise Resistance vs. Output Current 100 @:Ta=25 C VIN=4.0V Co=1F(Ceramic) Cin=0.1 F 10 o 90 80 70 f=1kHz 60 Equivalent Serise Resistance : ESR( ) Ripple Rejection : RR (dB) 1 50 STABLE REGION 40 0.1 30 f=10kHz 20 0.001 0.02 0.01 0.1 1 10 100 1 10 100 1m 10m 100m 700m Output Current : Io(mA) Output Current : Io(A) 0.3 NJU7780/81_3.0V Dropout Voltage v.s. Temperature @:Io=150mA Co=1.0F(Ceramic) Cin=0.1F NJU7780/81_3.0V Control Voltage v.s. Temperature 2 Control Voltage : VCONT(ON) (V) 0.25 1.5 Dropout Voltage:dVI-O (V) 0.2 0.15 1 0.1 0.5 0.05 @:VIN=4.0V Io=30mA Co=1.0F(Ceramic) Cin=0.1F -50 0 50 100 o 0 150 0 -50 0 50 100 o 150 Temperature : Ta ( C) Temperature : Ta ( C) NJU7780/81_3.0V Quiescent Current v.s. Temperature 30 4 NJU7780/81_3.0V Output Voltage v.s. Temperature @:VIN=4.0V Io=30mA Co=1.0F(Ceramic) Cin=0.1F 25 3.5 3 Quiescent Current : IQ ( A) Output Voltage Vo (V) @:VIN=4.0V Output is open. Co=1.0F(Ceramic) Cin=0.1F -50 0 50 100 o 20 2.5 15 2 1.5 10 1 5 0.5 0 150 0 -50 0 50 100 o 150 200 Temperature : Ta ( C) Temperature Ta ( C) Ver.2004-12-22 -5- NJU7780/81 ELECTRICAL CHARACTERISTICS NJU7780_3.0V ON/OFF Transient Response 7 6 5 Output Voltage : Vo [V] 4 Output Voltage 3 2 1 0 -1 0 1 2 @:Ta=25 C VDD=4.0V Co=1.0F(Ceramic) R =100 3 Time : t [ms] 4 5 o NJU7781_3.0V ON/OFF Transient Response 10 7 6 Control Voltage : Vo [V] 5 Output Voltage : Vo [V] 4 Output Voltage 3 2 1 0 -1 0 1 2 -10 -15 -20 -25 -30 5 Control Voltage 10 5 Control Voltage : Vo [V] 0 -5 Control Voltage 5 0 -5 -10 -15 -20 -25 -30 @:Ta=25 C VDD=4.0V Co=1.0F(Ceramic) R =100 3 Time : t [ms] 4 o NJU7780/81_3.0V Input Transient Response 3.5 3.4 3.3 3.2 3.1 3 Output Voltage 2.9 2.8 2.7 0 @:Ta=25 C VDD=4.0V Co=1.0F(Ceramic) R =100 40 80 120 Time : t [ s] 160 200 o NJU7780/81_3.0V Load Transient Response 6 5 4 3 2 1 0 -1 -2 3.5 3.4 @:Ta=25o C VDD=4.0V Co=1.0F(Ceramic) Io=50mA 150 100 50 0 -50 Output Voltage 3 2.9 2.8 2.7 0 28 56 84 Time : t [ s] 112 -100 -150 -200 -250 140 Output Voltage : Vo [V] Output Voltage : Vo [V] Input Voltage Input Voltage : V IN [V] 3.3 3.2 3.1 [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. -6- Ver.2004-12-22 Output Current : Io [mA] Output Current |
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