NJM2830 LOW DROPOUT VOLTAGE REGULATOR

Transcription

1 LOW DROPOUT VOLTAGE REGULATOR GENERAL DESCRIPTION The is a 3mA output low dropout voltage regulator with ON/OFF control. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current..v to.v output voltage range, µf small decoupling capacitor, built-in noise bypass capacitor make the suitable for various applications. PACKAGE OUTLINE U FEATURES Output voltage options available..v (.V step) High Ripple Rejection 7dB typ. (f=khz Vo=3V Version) Output Noise Voltage Vno=µVrms typ. (Vo=3V Version) Output capacitor with.µf ceramic capacitor (Vo.V) Output Current Io(max.)=3mA High Precision Output Vo±.% Low Dropout Voltage.V typ. (Io=mA) ON/OFF Control (Active High) Internal Thermal Overload Protection Internal Over Current Protection Bipolar Technology Package Outline SOT-89- PIN CONFIGURATION. CONTROL. GND 3. NC. V OUT. V IN 3 U EQUIVALENT CIRCUIT V IN V OUT Control Bandgap Reference Thermal Protection GND - -

2 OUTPUT VOLTAGE Device Name Vout U-.V U-.V U-3 3.V U V U-.V U-7.7V U-8.8V U-.V U-8 8.V U-8 8.V U-8 8.V U-9 9.V U-.V U-.V The WHITE column shows applicable Voltage Rank(s) - -

3 ABSOLUTE MAXIMUM RATINGS (Ta= C) PARAMETER SYMBOL RATINGS UNIT Input Voltage V IN + V Control Voltage V CONT + V Power Dissipation P D mw Operating Temperature Topr - +8 C Storage Temperature Tstg - + C INPUT VOLTAGE RANGE V IN =+.3V~8V (In case of Vo <.V) ELECTRICAL CHARACTERISTICS (V IN= Vo+V, C IN =.µf, Co=.µF (.9V<Vo.V:Co=.µF,.9V<Vo.9V:Co=.7µF, Vo.9V: Co=µF),Ta= C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Vo -.% +.% V Quiescent Current I Q Vo V Version 3 8 µa Io=mA, V<Vo V Version 9 µa except Icont V<Vo V Version µa Quiescent Current at Control OFF I Q(OFF) V CONT =V na Output Current Io Vo-.3V 3 ma Line Regulation Vo/ V IN V IN =Vo+V Vo+V(Vo V Version) V IN =Vo+V 8V(Vo>V Version),. %/V Load Regulation Vo/ Io Io= 3mA.9 %/ma Dropout Voltage(*) V I O Io=mA..8 V Ripple Rejection RR ein=mvrms,f=khz,io=ma, Vo=3V Version 7 db Average Temperature Coefficient of Output Vo/ Ta Ta= 8 C, Io=mA ± ppm/ C Voltage Output Noise Voltage V NO f=hz 8kHz, Io=mA Vo=3V Version µvrms Control Current I CONT V CONT =.V 3 µa Control Voltage for ON-state V CONT(ON). V Control Voltage for OFF-state V CONT(OFF). 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

4 TEST CIRCUIT A I IN V IN V OUT V IN.µF.µF * (ceramic) I OUT V V OUT A I CONT CONTROL V V CONT GND *.9V<Vo.V version: Co=.µF(ceramic).9V<Vo.9V version: Co=.7µF(ceramic) Vo.9V version: Co=µF(ceramic) TYPICAL APPLICATIONS In the case where ON/OFF Control is not required: V IN VIN V OUT V OUT.µF R ( 3kΩ) CONTROL.µF *3 GND *3.9V<Vo.V version: Co=.µF(ceramic).9V<Vo.9V version: Connect control terminal to V IN terminal - -

5 In use of ON/OFF CONTROL: V IN V IN V OUT V OUT.µF.µF *3 R CONTROL GND *3.9V<Vo.V version: Co=.µF(ceramic).9V<Vo.9V version: Co=.7µF(ceramic) Vo.9V version: Co=µF(ceramic) 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. The current flow into the control terminal while the IC is ON state (I CONT ) can be reduced when a pull up resistance "R" is inserted between V IN and the control terminal. The minimum control voltage for ON state (V CONT (ON) ) is increased due to the voltage drop caused by I CONT and the resistance "R". The I CONT is temperature dependence as shown in the "Control Current vs. Temperature" characteristics. Therefore, the resistance "R" should be carefully selected to ensure the control voltage exceeds the V CONT (ON) over the required temperature range. Input Capacitance C IN Input capacitance C IN is required to prevent oscillation and reduce power supply ripple for applications with high power supply impedance or a long power supply line. Use the C IN value of.µf greater to avoid the problem. C IN should connect between GND and V IN as short as possible. Output Capacitance C O Output capacitor (Co) is required for a phase compensation of the internal error amplifier. The capacitance and the equivalent series resistance (ESR) influences stability of the regulator. This product is designed to work with a low ESR capacitor for the Co; however, use of recommended capacitance or greater value is essential for stable operation. Use of a smaller Co may cause excess output noise or oscillation of the regulator due to lack of the phase compensation. Therefore, use Co with the recommended capacitance or greater value and connect between Vo terminal and GND terminal with minimal wiring. The recommended capacitance depends on the output voltage. Low voltage regulator requires greater value of the Co. Thus, check the recommended capacitance for each output voltage. Use of a greater Co reduces output noise and ripple output, and also improves transient response of the output voltage against rapid load change. - -

6 DC CHARACTERISTICS (3V Version) 3. _3.V vs. Input Voltage _3.V vs. Output Current Co=.7µF(Ceramic) : Vo(V) Io=A : Vo(V).. Io=mA Input Voltage : VIN(V). VIN=.V Co=.7µF(Ceramic) 3 Output Current : Io(mA) _3.V Ground Pin Current v.s. Output Current VIN=.V Co=.7µF(Ceramic).3. _3.V Dropout Voltage vs. Output Current Co=.7µF(Ceramic) Ground Pin Current : I GND (ma) Dropout Voltage:dVI-O (V) Output Current : IO(mA) 3 Output Current:Io(mA) _3.V Control Current vs. Control Voltage VIN=.V Co=.7µF(Ceramic) 3. _3.V vs. Control Voltage Control Current : I Cont (µa) 3 Rc=kΩ Rc=Ω : Vo(V) 3.. Rc=Ω Rc=kΩ Rc=kΩ Rc=kΩ 3 Control Voltage : V Cont (V). VIN=.V Co=.7uF(Ceramic)... 3 Control Voltage : V Cont (V) - -

7 DC CHARACTERISTICS (3V Version) Load Regulation : dvo/dio(mv) _3.V Load Regulation vs. Output Current - VIN=.V Co=.7µF(Ceramic) - 3 Output Current : Io(mA) Peak Output Current : IoMAX(mA) _3.V Peak Output Current vs. Input Voltage Co=.7µF(Ceramic) 8 8 Input Voltage : VIN(V) _3.V Quiescent Current v.s. Input Voltage Output is open. Co=.7µF(Ceramic) including Icont Quiescent Current : IQ (µa) Input Voltage : VIN(V) - 7 -

8 AC CHARACTERISTICS (3V Version) Output Noise Voltage : Vn(µVrms) 8 _3.V Output Noise Voltage vs. Output Current Co=.7µF µ µ µ m m m Output Current : Io(A) VIN=.V LPF:8kHz Ripple Rejection Ratio : RR (db) _3.V Ripple Rejection Ratio v.s. Frequency Io=mA VIN=.V ein=mvrms Co=.7µF(Ceramic) Io=mA k k k Frequency : f (Hz) 8 _3.V Ripple Rejection vs. Output Current f=khz _3.V Equivalent Serise Resistance vs. Output Current VIN=V Co=.7µF(Ceramic) Ripple Rejection : RR (db) 7 3 VIN=.V ein=mvrms Co=.7µF(Ceramic) f=khz... Output Current : Io(mA) Equivalent Serise Resistance : ESR( Ω). VIN=8V STABLE REGION. µ µ µ m m m Output Current : Io(A) - 8 -

9 TEMPERATURE CHARACTERISTICS (3V Version).3 _3.V Dropout Voltage v.s. Co=.7µF(Ceramic) _3.V Control Voltage v.s. Temperature. Dropout Voltage:dVI-O (V) Control Voltage : VCONT(ON) Co=.7µF(Ceramic) - _3.V Control Current v.s. VCONT=.V Output is open Co=.7µF(Ceramic) 3. _3.V v.s. IN =V Co=.7µF(Ceramic) Control Current : Icont ( µa) 8 Vo (V) Temperature Ta ( o C) _3.V Quiescent Current v.s. Temperature Quiescent Current : IQ Output is open. Co=.7µF(Ceramic)

10 TEMPERATURE CHARACTERISTICS (3V Version). _3.V Line Regulation v.s. Co=.7µF(Ceramic).3. _3.V Load Regulation v.s. Io=-3mA Co=.7µF(Ceramic) Line Regulation : dvo/dvin (%/V). -. Load Regulation : dvo/dio (%/ma) _3.V v.s. Temperature _3.V Short Circuit Current v.s. Output is short to ground. Co=.7µF(Ceramic) Vo (V) 3.. Short Circuit Current : I SC (ma) Co=.7µF(Ceramic) - Temperature Ta ( o C) - - -

11 TRANSIENT RESPONSE (3V Version) 7 _3.V ON/OFF Transient Response without Load 7 _3.V ON/OFF Transient Response 3 - Control Voltage VIN=.V Co=.7µF(Ceramic) Io=mA -3 3 Time : t [S] Control Voltage : Vcont [V] 3 - VIN=.V Co=.7µF(Ceramic) Control Voltage -3 8 Time : t [ms] Control Voltage : Vcont [V] 3. _3.V Load Transient Response 3 3. _3.V Line Transient Response VIN=.V Co=.7µF(Ceramic) Output Current.9-8 Time : t [µs] 3 Output Current : Io [ma] Input Voltage VIN=.V Co=.7µF(Ceramic).9-8 Time : t [µs] 3 - Input Voltage : V IN [V] - -

12 DC CHARACTERISTICS (8.V Version) _8.V vs. Input Voltage Co=µF(Ceramic) _8.V vs. Output Current 8. Io=A 8 : Vo(V) Io=mA Input Voltage : VIN(V) : Vo(V) VIN=9.V Co=µF(Ceramic) 3 Output Current : Io(mA) _8.V Ground Pin Current v.s. Output Current VIN=9.V Co=µF(Ceramic).3. _8.V Dropout Voltage vs. Output Current Co=µF(Ceramic) Ground Pin Current : I GND (ma) Dropout Voltage:dVI-O (V) Output Current : IO(mA) 3 Output Current:Io(mA) _8.V Control Current vs. Control Voltage _8.V vs. Control Voltage Control Current : I Cont (µa) 3 VIN=9.V Co=µF(Ceramic) Rc=kΩ Rc=Ω Rc=kΩ 8 Control Voltage : V Cont (V) : Vo(V) 8 Rc=Ω Rc=kΩ Rc=kΩ Vin=9.V Co=µF(Ceramic)... 3 Control Voltage : V Cont (V) - -

13 DC CHARACTERISTICS (8.V Version) _8.V Load Regulation vs. Output Current _8.V Peak Output Current vs. Input Voltage - VIN=9.V Co=µF(Ceramic) 9 8 Load Regulation : dvo/dio(mv) Peak Output Current : IoMAX(mA) Output Current : Io(mA) Co=µF(Ceramic) 8 8 Input Voltage : VIN(V) Quiescent Current : I Q (µa) _8.V Quiescent Current v.s. Input Voltage Output is open. Co=µF(Ceramic) including Icont Input Voltage : VIN(V) - 3 -

14 AC CHARACTERISTICS (8.V Version) _8.V Output Noise Voltage vs. Output Current _8.V Ripple Rejection Ratio v.s. Frequency VIN=9.V LPF:8kHz 9 Io=mA Output Noise Voltage : Vn(µVrms) Co=µF Co=.µF Ripple Rejection Ratio : RR (db) Io=mA VIN=8.V ein=mvrms Co=µF(Ceramic) µ µ µ m m m k k k Output Current : Io(A) Frequency : f (Hz) Ripple Rejection : RR (db) _8.V Ripple Rejection vs. Output Current VIN=9.V ein=mvrms Co=uF(Ceramic) f=khz f=khz... Output Current : Io(mA) Equivalent Serise Resistance : ESR( Ω). _8.V Equivalent Serise Resistance vs. Output Current VIN=9.V Co=µF(Ceramic) STABLE REGION Output Current : Io(A) VIN=8V. µ µ µ m m m - -

15 TEMPERATURE CHARACTERISTICS (8.V Version).3 _8.V Dropout Voltage v.s. Temperature _8.V Control Voltage v.s. Co=µF(Ceramic). Dropout Voltage:dVI-O (V) Control Voltage : VCONT(ON) Co=µF(Ceramic) _8.V v.s. =9.V IN Co=mF(Ceramic) _8.V Quiescent Current v.s. Temperature Vo (V) Quiescent Current : I Q Output is open. Co=µF(Ceramic) 8 - Temperature Ta ( o C) -. _8.V Line Regulation v.s. Co=µF(Ceramic).3. _8.V Load Regulation v.s. Io=-3mA Co=µF(Ceramic) Line Regulation : dvo/dvin (%/V). -. Load Regulation : dvo/dio (%/ma)

16 TEMPERATURE CHARACTERISTICS (8.V Version) _8.V v.s. Temperature _8.V Short Circuit Current v.s. Output is short to ground. Co=µF(Ceramic) Vo (V) 8 Short Circuit Current : I SC (ma) Co=µF(Ceramic) - Temperature Ta ( o C) - TRANSIENT RESPONSE (8.V Version) _8.V ON/OFF Transient Response without Load _8.V ON/OFF Transient Response 8 Control Voltage VIN=9.V Co=.µF(Ceramic) Io=mA - 3 Time : t [S] Control Voltage : Vcont [V] 8 Control Voltage - VIN=9.V Co=.µF(Ceramic) Time : t [ms] Control Voltage : Vcont [V] VIN=9.V Co=.µF(Ceramic) _8.V Load Transient Response Output Current Time : t [µs] 3 3 Output Current : Io [ma] Input Voltage VIN=9.V Co=.µF(Ceramic) _8.V Line Transient Response 8. 8 Time : t [µs] Input Voltage : V IN [V] - -

17 DC CHARACTERISTICS (V Version). _V vs. Input Voltage _V vs. Output Current. Co=µF(Ceramic) Io=A : Vo(V) : Vo(V).7 Io=mA Input Voltage : VIN(V) VIN=V Co=µF(Ceramic) 3 Output Current : Io(mA) _V Ground Pin Current v.s. Output Current VIN=.V Co=µF(Ceramic).3. _V Dropout Voltage vs. Output Current Co=µF(Ceramic) Ground Pin Current : I GND (ma) Dropout Voltage:dVI-O (V) Output Current : IO(mA) 3 Output Current:Io(mA) _V Control Current vs. Control Voltage VIN=V Co=µF(Ceramic) Rc=Ω Rc=kΩ _V vs. Control Voltage Rc=Ω Control Current : I Cont (µa) 3 Rc=kΩ : Vo(V) 8 Rc=kΩ Rc=kΩ 8 Control Voltage : V Cont (V) Vin=V Co=µF(Ceramic)... 3 Control Voltage : V Cont (V) - 7 -

18 DC CHARACTERISTICS (V Version) _V Load Regulation vs. Output Current _V Peak Output Current vs. Input Voltage - VIN=.V Co=µF(Ceramic) 9 8 Load Regulation : dvo/dio(mv) Peak Output Current : Io MAX(mA) Output Current : Io(mA) Co=µF(Ceramic) Input Voltage : VIN(V) Quiescent Current : IQ (µa) _.V Quiescent Current v.s. Input Voltage Output is open. Co=µF(Ceramic) including Icont Input Voltage : VIN(V) - 8 -

19 AC CHARACTERISTICS (V Version) 3 _V Output Noise Voltage vs. Output Current _V Ripple Rejection Ratio v.s. Frequency Output Noise Voltage : Vn(µVrms) Co=µF µ µ µ m m m Output Current : Io(A) VIN=V LPF:8kHz Ripple Rejection Ratio : RR (db) Io=mA VIN=V ein=mvrms Co=µF(Ceramic) Io=mA k k k Frequency : f (Hz) Ripple Rejection : RR (db) _V Ripple Rejection vs. Output Current VIN=V ein=mvrms Co=µF(Ceramic) f=khz f=khz... Output Current : Io(mA) Equivalent Serise Resistance : ESR( Ω). _V Equivalent Serise Resistance vs. Output Current VIN=V Co=µF(Ceramic) STABLE REGION Output Current : Io(A) VIN=8V. µ µ µ m m m - 9 -

20 TEMPERATURE CHARACTERISTICS (V Version).3 _V Dropout Voltage v.s. Co=.µF(Ceramic) _V Control Voltage v.s. Temperature. Dropout Voltage:dVI-O (V) Control Voltage : VCONT(ON) Co=.µF(Ceramic) - Vo (V)...7 _V v.s. IN =V Co=.mF(Ceramic). - Temperature Ta ( o C) Quiescent Current : I Q (µa) _V Quiescent Current v.s. Output is open. Co=.µF(Ceramic) -. _V Line Regulation v.s. Co=.µF(Ceramic).3. _V Load Regulation v.s. Io=-3mA Co=.µF(Ceramic) Line Regulation : dvo/dvin (%/V). -. Load Regulation : dvo/dio (%/ma)

21 TEMPERATURE CHARACTERISTICS (V Version) _V v.s. Temperature _V Short Circuit Current v.s. Output is short to ground. Co=.µF(Ceramic) Vo (V) 8 Short Circuit Current : I SC (ma) Co=.µF(Ceramic) - Temperature Ta ( o C) - TRANSIENT RESPONSE (V Version) _.V ON/OFF Transient Response without Load 3 _.V ON/OFF Transient Response 3 Control Voltage 3 Control Voltage 3 VIN=.V Co=.µF(Ceramic) Io=mA - 3 Time : t [S] Control Voltage : Vo [V] 3 - VIN=.V Co=.µF(Ceramic) Time : t [ms] Control Voltage : Vo [V] Output Current _.V Load Transient Response.9 VIN=.V Co=.µF(Ceramic).9-8 Time : t [µs] 3 3 Output Current : Io [ma] Input Voltage VIN=.V Co=.µF(Ceramic) _.V Line Transient Response.9 8 Time : t [µs] Input Voltage : V IN [V] - -

22 [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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