LOW DROPOUT VOLTAGE REGULATOR

Transcription

1 LOW DROPOUT VOLTAGE REGULATOR GENERAL DESCRIPTION The is a low dropout voltage regulator with ON/OFF control. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. It delivers up to V/mA output power with the maximum input voltage of V. The is suitable for audio/video and PC related applications. The U2 suffix product achieves high P D compared with U although the same package outline (SOT-89-). PACKAGE OUTLINE NJM2884U/U2 NJM2884ADL NJM2884AKH( mm) FEATURES High Ripple Rejection 7dB typ. (f=khz, Vo=V Version) Low Output Noise Voltage Vno=4µVrms typ. Output capacitor with 2.2µF ceramic capacitor (Vo 2.7V) Output Current Io(max.)=mA High Precision Output Vo±.% Low Dropout Voltage.8V typ. (Io=mA) ON/OFF Control Function Internal Thermal Overload Protection Internal Short Circuit Current Limit Bipolar Technology Package Outline SOT-89-(NJM2884U/U2)/ TO-22-(NJM2884ADL)/ ESON6-H(NJM2884AKH) PIN CONFIGURATION 2 4. CONTROL. CONTROL 2. GND 2. V IN 4. V OUT. V IN. N.C. 4. V OUT. N.C.. GND NJM2884U/U2 NJM2884ADL NJM2884AKH Exposed Pad connected to GND. V OUT 2. NC. GND 4. CONTROL. NC 6. V IN EQUIVALENT CIRCUIT V IN V OUT CONTROL Thermal Protection Bandgap Reference GND - -

2 OUTPUT VOLTAGE RANK LIST The WHITE column shows applicable Voltage Rank(s) Device Name V out Device Name V out NJM2884U/U2-.V NJM2884U-4.4V NJM2884U-6.6V NJM2884U-.V NJM2884U-7.7V NJM2884U-6.6V NJM2884U/U2-8.8V NJM2884U-7.7V NJM2884U-9.9V NJM2884U-8.8V NJM2884U-2 2.V NJM2884U-9.9V NJM2884U-2 2.V NJM2884U-4 4.V NJM2884U V NJM2884U-4 4.V NJM2884U-2 2.V NJM2884U V NJM2884U V NJM2884U-4 4.V NJM2884U-2 2.V NJM2884U V NJM2884U/U2-2 2.V NJM2884U-4 4.V NJM2884U V NJM2884U V NJM2884U V NJM2884U V NJM2884U V NJM2884U V NJM2884U V NJM2884U V NJM2884U-.V NJM2884U/U2-.V NJM2884U-.V NJM2884U-2.2V NJM2884U-.V Device Name V out Device Name V out NJM2884ADL-.V NJM2884ADL-.V NJM2884ADL-6.6V NJM2884ADL-6.6V NJM2884ADL-7.7V NJM2884ADL-7.7V NJM2884ADL-8.8V NJM2884ADL-8.8V NJM2884ADL-9.9V NJM2884ADL-9.9V NJM2884ADL-2 2.V NJM2884ADL-4 4.V NJM2884ADL-2 2.V NJM2884ADL-4 4.V NJM2884ADL V NJM2884ADL V NJM2884ADL-2 2.V NJM2884ADL-4 4.V NJM2884ADL V NJM2884ADL V NJM2884ADL-2 2.V NJM2884ADL-4 4.V NJM2884ADL V NJM2884ADL V NJM2884ADL V NJM2884ADL V NJM2884ADL V NJM2884ADL V NJM2884ADL V NJM2884ADL V NJM2884ADL-.V NJM2884ADL-.V NJM2884ADL-.V NJM2884AU-.V NJM2884ADL-2.2V NJM2884ADL-.V NJM2884ADL-4.4V - 2 -

3 Device Name V out Device Name V out NJM2884AKH-.V NJM2884AKH-.V NJM2884AKH-6.6V NJM2884AKH-6.6V NJM2884AKH-7.7V NJM2884AKH-7.7V NJM2884AKH-8.8V NJM2884AKH-8.8V NJM2884AKH-9.9V NJM2884AKH-9.9V NJM2884AKH-2 2.V NJM2884AKH-4 4.V NJM2884AKH-2 2.V NJM2884AKH-4 4.V NJM2884AKH V NJM2884AKH V NJM2884AKH-2 2.V NJM2884AKH-4 4.V NJM2884AKH V NJM2884AKH V NJM2884AKH-2 2.V NJM2884AKH-4 4.V NJM2884AKH V NJM2884AKH V NJM2884AKH V NJM2884AKH V NJM2884AKH V NJM2884AKH V NJM2884AKH V NJM2884AKH V NJM2884AKH-.V NJM2884AKH-.V NJM2884AKH-.V NJM2884AKH-2.2V NJM2884AKH-.V NJM2884AKH-4.4V - -

4 ABSOLUTE MAXIMUM RATINGS (Ta=2 C) PARAMETER SYMBOL RATINGS UNIT Input Voltage V IN + V Control Voltage V CONT + V SOT-89- (U) 62(*) 96(*2) Power Dissipation P D SOT-89- (U2) 62(*) 24(*2) TO-22-9(*) 2(*2) mw ESON6-H 44(*) (*4) Operating Temperature Topr C Storage Temperature Tstg C (*): Mounted on glass epoxy board. (76.2 x4. x.6mm:based on EIA/JDEC standard size, 2Layers, Cu area mm 2 ) (*2): Mounted on glass epoxy board. (76.2 x 4. x.6mm:based on EIA/JDEC standard, 4Layers) ( 4Layers: Applying mm inner Cu area and a thermal via hall to a board based on JEDEC standard JESD-) (*): Mounted on glass epoxy board (. 4..6mm: based on EIA/JEDEC standard, 2Layers FR-4, with Exposed Pad) (*4): Mounted on glass epoxy board (. 4..6mm: based on EIA/JEDEC standard, 4Layers FR-4, with Exposed Pad) (4Layers: Applying mm inner Cu area and a thermal via hole to a board based on JEDEC standard JESD-) INPUT VOLTAGE RANGE V IN =+2.V~9V In case of Vo<2.V ELECTRICAL CHARACTERISTICS (V IN =Vo+V, C IN =.µf, Co=2.2µF: Vo 2.7V (Co=4.7µF :.7V<Vo 2.6V, Co=µF : Vo.7V), Ta=2 C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Output Voltage Vo Io=mA -.% +.% V Quiescent Current I Q Io=mA 2 µa Quiescent Current at Control OFF I Q(OFF) V CONT =V na Output Current Io Vo -.V 6 ma Line Regulation Vo/ V IN V IN =Vo+V Vo+6V (Vo V Version), V IN =Vo+V 9V (Vo>V Version),. %/V Io=mA Load Regulation Vo/ Io Io= ma.9 %/ma Dropout Voltage (*) V I-O Io=mA.8.28 V Ripple Rejection Average Temperature Coefficient of Output Voltage RR ein=2mvrms, f=khz, Io=mA, Vo=V Version 7 db Vo/ Ta Ta= +8 C, Io=mA ± ppm/ C Output Noise Voltage V NO f=hz 8kHz, Io=mA, Vo=V Version 4 µvrms Control Current I CONT V CONT =.6V 2 µa Control Voltage for ON-state V CONT(ON).6 V Control Voltage for OFF-state V CONT(OFF).6 V (*): The output voltage excludes under 2.V. 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

5 POWER DISSIPATION vs. AMBIENT TEMPERATURE Power Dissipation P D (mw) NJM2884U/U2 Power Dissipation (Topr=-4~+8 C,Tj= C) U2 : on 4 layers board U : on 4 layers board U/U2 : on 2 layers board Temperature : Ta( C) Power Dissipation P D (mw) 2 2 NJM2884ADL PowerDissipation (Topr=-4~+8 C,Tj= C) on 4 layers board on 2 layers board Temperature : Ta( C) NJM2884AKH Power Dissipation (Topr=-4~+8 C,Tj= C) Power Dissipation P D (mw) on 4 layers board with Exposed Pad on 2 layers board with Exposed Pad Temperature : Ta( C) - -

6 TEST CIRCUIT A I IN V IN V OUT V IN.µF (*6) 2.2µF (Ceramic) I OUT V V OUT A I CONT CONTROL V V CONT GND (*6).7<Vo 2.6V version: Co=4.7µF (Ceramic) Vo.7V version: Co=µF (Ceramic) TYPICAL APPLICATION In the case where ON/OFF Control is not required: V IN V IN V OUT V OUT.µF (*7) 2.2µF R (~kω) CONTROL GND (*7).7<Vo 2.6V version: Co=4.7µF Vo.7V version: Co=µF - 6 -

7 2 In use of ON/OFF CONTROL: V IN V IN V OUT V OUT.µF (*8) 2.2µF R CONTROL GND (*8).7<Vo 2.6V version: Co=4.7µF Vo.7V version: Co=µF State of control terminal: H output is enabled. L or open output is disabled. *In the case of using a resistance "R" between V IN and control. If this resistor is inserted, it can reduce the control current when the control voltage is high. The applied voltage to control terminal should set to consider voltage drop through the resistor R and the minimum control voltage for ON-state. The V CONT (ON) and I CONT have temperature dependence as shown in the "Control Current vs. Temperature" and " Control Voltage vs. Temperature" characteristics. Therefore, the resistance "R" should be selected to consider the temperature characteristics

8 *Input Capacitor C IN Input Capacitor C IN is required to prevent oscillation and reduce power supply ripple for applications when high power supply impedance or a long power supply line. Therefore, use the recommended C IN value (refer to conditions of ELECTRIC CHARACTERISTIC) or larger and should connect between GND and V IN as shortest path as possible to avoid the problem. *Output Capacitor C O Output capacitor (C O ) will be required for a phase compensation of the internal error amplifier. The capacitance and the equivalent series resistance (ESR) influence to stable operation of the regulator. Use of a smaller C O may cause excess output noise or oscillation of the regulator due to lack of the phase compensation. On the other hand, Use of a larger C O reduces output noise and ripple output, and also improves output transient response when rapid load change. Therefore, use the recommended C O value (refer to conditions of ELECTRIC CHARACTERISTIC) or larger and should connect between GND and V OUT as shortest path as possible for stable operation The recommended capacitance depends on the output voltage rank. Especially, low voltage regulator requires larger C O value. In addition, you should consider varied characteristics of capacitor (a frequency characteristic, a temperature characteristic, a DC bias characteristic and so on) and unevenness peculiar to a capacitor supplier enough. When selecting C O, recommend that have withstand voltage margin against output voltage and superior temperature characteristic

9 TYPICAL CHARACTERISTICS.2 NJM2884_.V Output Voltage vs. Input Voltage 4 NJM2884_.V Output Voltage vs. Output Current. Co=2.2µF. VIN=4.V Co=2.2µF Output Voltage : Vo(V) Io=mA Io=mA Output Voltage : Vo(V) Io=mA Input Voltage : VIN(V) Output Current : Io(mA) 2 NJM2884_.V Ground Pin Current vs. Output Current VIN=4.V.. NJM2884_.V Dropout Voltage vs. Output Current Ground Pin Current : IGND (ma) 2 Dropout Voltage:dVI-O (V) Output Current : IO(mA) Output Current:Io(mA) 4 NJM2884_.V Output Voltage vs. Control Voltage. Output Voltage : Vo(V) Rc=Ω Rc=kΩ Rc=kΩ. VIN=4.V Co=2.2 µf(ceramic) Io=mA Control Voltage : V (V) Cont - 9 -

10 TYPICAL CHARACTERISTICS NJM2884_.V Load Regulation vs. Output Current NJM2884_.V Peak Output Current vs. Input Voltage - Load Regulation : dvo/dio(mv) VIN=4.V Output Current : Io(mA) Peak Output Current : IoMAX(mA) Input Voltage : VIN(V) Quiescent Current : IQ (µa) 2 NJM2884_.V Quiescent Current vs. Input Voltage Output is open. including Icont Output Noise Voltage : Vn(uVrms) NJM2884_.V Output Noise Voltage vs. Output Current VIN=4.V LPF:8kHz Co=2.2µF(ceramic) Input Voltage : VIN(V)... Output Current : Io(mA) NJM2884_.V Ripple Rejection Ratio vs. Frequency NJM2884_.V Ripple Rejection vs. Output Current 9 Io=mA 9 f=khz Ripple Rejection Ratio : RR (db) Io=mA Io=mA Io=mA VIN=4.V ein=2mvrms 2 k k 4 k Frequency : f (Hz) Ripple Rejection : RR (db) f=khz VIN=4.V ein=2mvrms 2... Output Current : Io(mA) - -

11 TYPICAL CHARACTERISTICS Equivalent Serise Resistance : ESR ( Ω ). NJM2884_.V Equivalent Serise Resistance vs. Output Current VIN=4.V STABLE REGION.2... Output Current : Io(mA) Dropout Voltage : dv I-O (V) NJM2884_.V Dropout Voltage vs. =ma - 2 NJM2884_.V Control Voltage vs. Io=mA. NJM2884_.V Output Voltage vs. Temperature Control Voltage :Vcont-off (V).. Output Voltage : Vo(V). 2.9 Io=mA Co=2.2µF NJM2884_.V Output Peak Current vs. Temperature NJM2884_.V Quiescent Current vs. Temperature Output Peak Current : Io_peak (ma) Co=2.2 µf(ceramic) - Quiescent Current : IQ (µa) 2 2 including Output is open. Co=2.2µF - - -

12 TYPICAL CHARACTERISTICS. NJM2884_.V Line Regulation vs. Io=mA..2 NJM2884_.V Load Regulation vs. Io=-mA Line Regulation : dvo/dvin(%/v). -. Load Regulation : dvo/dio(%/a) NJM2884.V Output Voltage vs. Temperature 4 NJM2884_.V Short Circuit Current vs. VIN=4.V Output Voltage : Vo(V) Short Circuit Current : Isc (ma) 2 Io=mA

13 TYPICAL CHARACTERISTICS NJM2884_.V ON/OFF Transient Response NJM2884_.V ON/OFF Transient Response Without Load Control Voltage 6 Control Voltage Output Voltage : Vo [V] 4 2 Output Voltage VIN=4.V Io=mA Control Voltage : Vo [V] Output Voltage : Vo [V] 4 2 Output Voltage VIN=4.V Io=mA Control Voltage : Vo [V] Time : t [ms] Time : t [ms]. NJM2884_.V Load Transient Response. NJM2884_.V Line Transient Response 8.4 Output Current.4 7 Output Voltage : Vo [V] Output Voltage VIN=4.V Output Current : Io [ma] Output Voltage : Vo [V] Input Voltage Output Voltage VIN=4.V Co=2.2 µf(ceramic) lo=ma Input Voltage : V IN [V] Time : t [ µs] Time : t [ µs ] [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. - -

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