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. PACKAGE OUTLINE NJU7780/81U1 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 Short Circuit Current Limit Internal Thermal Overload Protection CMOS technology Package outline SOT-89-5 PIN CONFIGURATION 5 2 4 1. CONTROL 2. GND 3. N.C. 4. VOUT 1 2 3 5. VIN EQUIVALENT CIRCUIT VIN VOUT VIN VOUT Thermal Protection CONTROL Output Control CONTROL Vref GND Current Limit Output Control Vref Current Limit GND NJU7780 Ver.2004-12-22 Thermal Protection NJU7781 -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=25°C) 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=0.1µF, Co=0.1µF, Ta=25°C) PARAMETER SYMBOL Output Voltage Vo Input Voltage VIN Quiescent Current Quiescent Current at Control OFF Output Current Short Current Limit IQ IQ(OFF) Io ILIM Line Regulation ∆Vo/∆VIN Load Regulation ∆Vo/∆Io Dropout Voltage ∆VI-O Ripple Rejection RR Average Temperature Coefficient of Output Voltage Output Noise Voltage Pull-Down Resistance ∆Vo/∆Ta Control Voltage for ON-state Control Voltage for OFF-state VCONT(ON) VCONT(OFF) VNO RCONT TEST CONDITION MIN. TYP. MAX. UNIT -1.0% - +1.0% V - - 9 V Io=0mA, VCONT=VIN - 20 40 µA VCONT=0V - - 1 µA 300 - 120 - mA mA - - 0.10 %/V - 0.18 0.015 0.25 %/mA - 0.15 0.12 0.22 0.2 V ein=200mVrms, f=400Hz, IO=10mA, VO=3.0V - 65 - dB Ta=0∼85°C, Io=10mA - ±100 - 1.5 80 5 10 ppm/° C µVrms MΩ 1.6 - - 0.3 V V Io=30mA Vo-0.3V Vo=0V VIN=Vo+1V∼Vo+6V(3.0>Vo), VIN=Vo+1V∼Vo+9V(3.0≤Vo), Io=30mA Io=0∼300mA 2.1 ≤ VO ≤ 2.6V IO=150mA 2.7 ≤ VO ≤ 3.3V 3.4 ≤ VO ≤ 5.0V F=10Hz∼80kHz, 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 A V IN CIN 0.1µF V IN A V V OUT C0 1.0µF (ceramic) NJU778* I OUT V V OUT I CONT CONTROL GND V CONT TYPICAL APPLICATION 1 In the case where ON/OFF Control is not required: V IN V IN V OUT V OUT C0 1.0µF CIN 0.1µF NJU778* CONTROL GND Connect control terminal to VIN terminal 2 In use of ON/OFF CONTROL: V IN V IN CIN 0.1µF V OUT V OUT C0 0.1µF 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 NJU7780/81_3.0V Output Voltage vs. Input Voltage 3.2 NJU7780/81_3.0V Output Voltage vs. Output Current 4 o @:Ta=25 C Co=1.0µF(Ceramic) 3.5 3.1 Output Voltage : Vo(V) Output Voltage : Vo(V) 3 Io=0A 3 2.9 Io=30mA 2.5 2 1.5 1 2.8 Io=100mA o @:Ta=25 C VIN=4.0V Co=1.0µF(Ceramic) 0.5 2.7 2.7 2.8 2.9 3 3.1 3.2 3.3 0 3.4 0 100 200 Input Voltage : VIN(V) NJU7780/81_3.0V Ground Pin Current v.s. Output Current 400 500 600 700 NJU7780/81_3.0V Dropout Voltage vs. Output Current 0.5 70 o o @:Ta=25 C VIN=4.0V Co=1.0µF(Ceramic) 60 300 Output Current : Io(mA) @:Ta=25 C Co=1.0µF(Ceramic) 50 Dropout Voltage:dVI-O (V) Ground Pin Current : IGND (uA) 0.4 40 30 20 0.3 0.2 0.1 10 0 0 0 50 100 150 200 250 300 350 0 400 50 250 300 350 400 Output Noise Voltage : Vn(µ µ Vrms) 120 3 Output Voltage : Vo(V) 200 140 3.5 2.5 2 1.5 1 o @:Ta=25 C VIN=4.0V Co=1.0µF(Ceramic) Io=30mA 0.5 0 0.5 1 1.5 2 Control Voltage : Vcont(V) 2.5 100 80 60 40 o @:Ta=25 C VIN=4.0V LPF:80kHz Cin=0.1µF Co=1.0µF(Ceramic) 20 0 -4- 150 NJU7780/81_3.0V Output Noise Voltage vs. Output Current NJU7780/81_3.0V Output Voltage vs. Control Voltage 4 100 Output Current:Io(mA) Output Current : IO(mA) 3 0 0.001 0.01 0.1 1 10 100 Output Current : Io(mA) Ver.2004-12-22 NJU7780/81 ELECTRICAL CHARACTERISTICS NJU7780/81_3.0V Equivalent Serise Resistance vs. Output Current NJU7780/81_3.0V Ripple Rejection vs. Output Current 100 100 o @:Ta=25 C VIN=4.0V ein=200mVrms Co=1.0µF(Ceramic) o Equivalent Serise Resistance : ESR(Ω Ω) 90 Ripple Rejection : RR (dB) 80 70 f=1kHz 60 50 40 @:Ta=25 C VIN=4.0V Co=1µF(Ceramic) Cin=0.1 µF 10 1 STABLE REGION 0.1 30 f=10kHz 20 0.001 0.02 0.01 0.1 1 10 100 1µ 100µ 10µ Output Current : Io(mA) 100m 700m 2 @:Io=150mA Co=1.0µF(Ceramic) Cin=0.1µF Control Voltage : VCONT(ON) (V) 0.25 Dropout Voltage:dVI-O (V) 10m NJU7780/81_3.0V Control Voltage v.s. Temperature NJU7780/81_3.0V Dropout Voltage v.s. Temperature 0.3 1m Output Current : Io(A) 0.2 0.15 0.1 1.5 1 0.5 @:VIN=4.0V Io=30mA Co=1.0µF(Ceramic) Cin=0.1µF 0.05 0 -50 0 50 100 0 150 -50 o 0 50 100 150 o Temperature : Ta ( C) Temperature : Ta ( C) NJU7780/81_3.0V Quiescent Current v.s. Temperature 30 NJU7780/81_3.0V Output Voltage v.s. Temperature 4 @:VIN=4.0V Io=30mA Co=1.0µF(Ceramic) Cin=0.1µF 3.5 25 Output Voltage Vo (V) Quiescent Current : IQ (µ A) 3 20 15 10 2 1.5 1 @:VIN=4.0V Output is open. Co=1.0µF(Ceramic) Cin=0.1µF 5 0.5 0 0 -50 0 50 100 o Temperature : Ta ( C) Ver.2004-12-22 2.5 150 -50 0 50 100 150 200 o Temperature Ta ( C) -5- NJU7780/81 ELECTRICAL CHARACTERISTICS NJU7780_3.0V ON/OFF Transient Response NJU7781_3.0V ON/OFF Transient Response 10 Control Voltage 5 6 5 0 5 4 -5 3 -10 2 -15 1 Output Voltage : Vo [V] Output Voltage Control Voltage : Vo [V] -20 10 Control Voltage 5 0 4 -5 Output Voltage 3 -10 2 -15 1 0 -1 0 1 2 3 Time : t [ms] 4 -25 0 -30 -1 3.5 5 3.4 4 Input Voltage 3.2 3 3.1 2 3 0 40 80 120 Time : t [ µs] 4 -30 5 160 200 @:Ta=25o C VDD=4.0V Co=1.0µF(Ceramic) Io=50mA Output Current 3.2 100 50 0 3.1 -50 Output Voltage -100 2.9 -150 -1 2.8 -200 -2 2.7 0 o @:Ta=25 C VDD=4.0V Co=1.0µF(Ceramic) RL=100Ω 2.7 3 Time : t [ms] 3 1 Output Voltage 2.8 2 150 3.3 Output Voltage : Vo [V] Output Voltage : Vo [V] 3.4 6 Input Voltage : V IN [V] 3.5 2.9 1 -25 NJU7780/81_3.0V Load Transient Response NJU7780/81_3.0V Input Transient Response 3.3 @:Ta=25 C VDD=4.0V Co=1.0µF(Ceramic) R L=100Ω 0 5 -20 o o @:Ta=25 C VDD=4.0V Co=1.0µF(Ceramic) R L=100Ω 0 28 56 84 Time : t [ µs] 112 Output Current : Io [mA] Output Voltage : Vo [V] 6 7 Control Voltage : Vo [V] 7 -250 140 [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