NJM2892 2ch LOW DROPOUT VOLTAGE REGULATOR GENERAL DESCRIPTION The NJM2892 is a 2ch low dropout voltage regulator with ON/OFF control. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. PACKAGE OUTLINE NJM2892F1 FEATURES High Ripple Rejection 75dB typ. (f=1kHz Vo=3V version) Output Noise Voltage VNO =45µVrms typ. Output capacitor with 1.0µF ceramic capacitor (Vo≥2.7V) Output Current Io(max.)=100mA x 2ch High Precision Output Vo±1.0% Low Dropout Voltage 0.1V typ. (Io=60mA) ON/OFF Control Internal Short Circuit Current Limit Internal Thermal Overload Protection Bipolar Technology Package Outline SOT-23-6 (MTP-6 : 2.8x2.9x1.1mm) PIN CONFIGURATION 6 5 4 1 2 3 PIN FUNCTION 1. VOUT2 2. GND 3. VOUT1 4. CONTROL1 5. VIN 6. CONTROL2 NJM2892F1 Ver.2004-12-24 -1- NJM2892 EQUIVALENT CIRCUIT VIN VOUT1 Control1 Thermal Protection Bandgap Reference VOUT2 Control2 ON/OFF Control ON/OFF Control GND NJM2892 OUTPUT VOLTAGE RANK LIST (* : Under development) Device Name VOUT Ch 1 Ch 2 *NJM2892F1-1515 1.5V 1.5V *NJM2892F1-1815 1.8V 1.5V NJM2892F1-2121 2.1V 2.1V NJM2892F1-0303 3.0V 3.0V NJM2892F1-3328 3.3V 2.8V NJM2892F1-3333 3.3V 3.3V NJM2892F1-0521 5.0V 2.1V *NJM2892F1-0533 5.0V 3.3V -2- Ver.2004-12-24 NJM2892 ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Control Voltage VCONT (Ta=25°C) RATINGS UNIT +14 V +14(*1) V 350(*2) Power Dissipation PD SOT-23-6 mW 200(*3) Operating Temperature Topr −40 ∼ +85 °C Storage Temperature Tstg −40 ∼ +125 °C (*1): When input voltage is less than +14V, the absolute maximum control voltage is equal to the input voltage. (*2): Mounted on glass epoxy board based on EIA/JEDEC. (114.3x76.2x1.6mm: 2Layers) (*3): Device itself. Operating voltage VIN=+2.3 ∼ +14V (In case of Vo<2.1V version) ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.1µF, Co=1.0µF: Vo≥2.7V (Co=2.2µF : 1.8V<Vo≤2.6V:, Co=4.7µF : Vo≤1.8V), Ta=25°C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Output Voltage Vo Io=30mA -1.0% +1.0% V VCONT 1= VIN , VCONT 2= 0V or 150 220 Quiescent Current 1 IQ1 VCONT 2= VIN , VCONT 1= 0V µA Io=0mA , Except ICONT VCONT 1= VCONT 2= VIN Quiescent Current 2 IQ2 270 400 µA Io=0mA , Except ICONT Quiescent Current VCONT=0V 100 nA IQ(OFF) at Control OFF Vo-0.3V Output Current Io 100 130 mA 0.10 %/V Line Regulation ∆Vo/∆VIN VIN=Vo+1V ∼ Vo+6V, Io=30mA Load Regulation 0.03 %/mA ∆Vo/∆Io Io=0 ∼ 60mA Io=60mA Dropout Voltage(*4) 0.1 0.18 V ∆VI-O ein=200mVrms, f=1kHz, Io=10mA, Ripple Rejection RR 75 dB Vo=3V version Average Temperature Ta=0 ∼ 85°C, Io=10mA Coefficient of Output ∆Vo/∆Ta ± 50 ppm/°C Voltage f=10Hz ∼ 80kHz, Io=10mA, Output Noise Voltage VNO 45 µVrms Vo=3V version Control Voltage for 1.6 V VCONT(ON) ON-state Control Voltage for 0.6 V VCONT(OFF) OFF-state (*4): The output voltage excludes under 2.1V. (*5): VIN =Vo+1V means add 1V to higher output voltage. 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. Ver.2004-12-24 -3- NJM2892 TEST CIRCUIT A IIN VIN VIN 0.1µ F A I CONT1 V OUT1 V V CONT2 *6 -4- I CONT2 I OUT1 1.0µ F *6 (ceramic) I OUT2 V V OUT1 NJM2892 CONTROL1 V V CONT1 A 1.0µ F *note1 (ceramic) V OUT2 V V OUT2 CONTROL2 GND 1.8V<Vo ≤ 2.6V version : Co=2.2µF(ceramic) Vo≤1.8V version : Co=4.7µF(ceramic) Ver.2004-12-24 NJM2892 TYPICAL APPLICATION 1 In the case where ON/OFF Control is not required: VIN VIN V OUT1 V OUT1 1.0µ F *7 0.1µ F NJM2892 R1 (0 ∼ 300kΩ) CONTROL1 V OUT2 V OUT2 1.0µ F *7 R2 (0 ∼ 300kΩ) CONTROL2 GND *7 1.8V<Vo ≤ 2.6V version : Co=2.2µF Vo≤1.8V version : Co=4.7µF Connect control terminal to VIN terminal The quiescent current can be reduced by using a resistance “R”. Instead, it increases the minimum operating voltage. For further information, please refer to Figure “Output Voltage vs. Control Voltage”. 2 In use of ON/OFF CONTROL: VIN VIN V OUT1 V OUT1 1.0µ F *7 0.1µ F NJM2892 R1 R2 CONTROL1 V OUT2 V OUT2 1.0µ F *7 CONTROL2 GND *7 1.8V<Vo ≤ 2.6V version : Co=2.2µF Vo≤1.8V version : Co=4.7µF State of control terminal: •“H”→ output is enabled. •“L” or “open” → output is disabled. Ver.2004-12-24 -5- NJM2892 POWER DISSIPATION vs. AMBIENT TEMPERATURE NJM2892F1 Power Dissipation (Topr=-40～+85℃,Tj=125℃,PD=200mW(Ta≦25℃)) Power Dissipation PD(mW) 500 On Board(114.3×76.2×1.6mm, FR-4) 400 300 Device itself 200 100 0 -50 -25 0 25 50 75 100 Ambient Temperature Ta(℃) -6- Ver.2004-12-24 NJM2892 ELECTRICAL CHARACTERISTICS NJM2892_3.0V Output Voltage vs. Input Voltage 3.2 NJM2892_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 V IN=4.0V Co=1µF(Ceramic) 0.5 2.7 0 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 0 50 100 150 200 Output Current : Io(mA) Input Voltage : VIN(V) NJM2892_3.0V Ground Pin Current v.s. Output Current 15 NJM2892_3.0V Dropout Voltage vs. Output Current 0.3 o o @:Ta=25 C V IN=4.0V Co=1.0µF(Ceramic) @:Ta=25 C Co=1.0µF(Ceramic) Dropout Voltage:dVI-O (V) Ground Pin Current : IGND (mA) 0.25 10 5 0.2 0.15 0.1 0.05 0 0 0 20 40 60 80 100 120 0 140 20 40 30 NJM2892_3.0V Control Current vs. Control Voltage 80 100 120 NJM2892_3.0V Output Voltage vs. Control Voltage 4 @:Ta=25oC V IN=4.0V Co=1.0µF(Ceramic) Io=30mA 25 60 Output Current:Io(mA) Output Current : IO(mA) 3.5 Output Voltage : Vo(V) Rc=0Ω Control Current : I Cont (mA) 3 20 15 Rc=0Ω 10 Rc=50kΩ 2.5 2 Rc=50kΩ 1.5 Rc=100kΩ 1 @:Ta=25 oC V IN=4.0V Co=1.0µF(Ceramic) Io=30mA 5 0.5 Rc=100kΩ 0 0 0 1 2 Control Voltage : V 3 (V) Cont Ver.2004-12-24 0 0.5 1 1.5 2 Control Voltage : V 2.5 3 (V) Cont -7- NJM2892 ELECTRICAL CHARACTERISTICS NJM2892_3.0V Load Regulation vs. Output Current NJM2892_3.0V Quiescent Current v.s. Input Voltage 0 2000 o @:Ta=25 C Output is open. Co=1.0µF(Ceramic) including Icont -20 1500 Quiescent Current : IQ (mA) Load Regulation : dVo/dIo(mV) -10 -30 -40 -50 -60 500 o -70 @:Ta=25 C V IN=4.0V Co=1.0µF(Ceramic) -80 0 50 100 100 0 150 0 5 10 15 Output Current : Io(mA) Input Voltage : VIN(V) NJM2892_3.0V Output Noise Voltage vs. Output Current NJM2892_3.0V Ripple Rejection Ratio v.s. Frequency 100 @:Ta=25 oC V IN=4.0V LPF:80kHz Co=1.0µF 80 60 40 20 Io=0mA 90 Ripple Rejection Ratio : RR (dB) Output Noise Voltage : Vn(µ µ Vrms) 1000 Io=10mA 80 70 60 Io=30mA 50 40 o @:Ta=25 C VIN=4.0V ein=200mVrms Co=1.0µF(Ceramic) Cp=0.01µF 30 0 1µ 0.001 10µ 0.01 100µ 0.1 1m 1 10m 10 100m 100 20 10 10 100 100 1k 1000 4 10k 10 5 100k 10 Frequency : f (Hz) Output Current : Io(A) NJM2892_3.0V Equivalent Serise Resistance vs. Output Current 100 Equivalent Serise Resistance : ESR(Ω ) @:Ta=25oC Co=1.0µF(Ceramic) Cp=0.01µF 10 STABLE REGION 1 0.1 0.01 1µ 10µ 100µ 1m 10m 100m Output Current : Io(A) -8- Ver.2004-12-24 NJM2892 ELECTRICAL CHARACTERISTICS 0.3 2 @:V IN=4V Io=30mA Co=1µF(Ceramic) @:VIN=4V Io=60mA Co=1µF(Ceramic) Control Voltage : VCONT(OFF) (V) 0.25 Dropout Voltage:dVI-O (V) NJM2892_3.0V Control Voltage v.s. Temperature NJM2892_3.0V Dropout Voltage v.s. Temperature 0.2 0.15 0.1 1.5 1 0.5 0.05 0 0 -50 0 50 100 150 -50 o 0 50 100 150 o Temperature : Ta ( C) Temperature : Ta ( C) NJM2892_3.0V Quiescent Current v.s. Temperature NJM2892_3.0V Output Voltage v.s. Temperature 250 3.1 @:VIN=4V Io=30mA Co=1µF(Ceramic) 200 Quiescent Current : IQ (µ A) Output Voltage Vo (V) 3.05 3 2.95 150 100 50 @:V IN=4V Output is open. Co=1µF(Ceramic) 2.9 0 -50 0 50 100 150 -50 o 0 50 100 150 o Temperature Ta ( C) Temperature : Ta ( C) NJM2892_3.0V Load Regulation v.s. Temperature NJM2892_3.0V Line Regulation v.s. Temperature 0.03 0.1 @:VIN=4V Io=0-60mA Co=1µF(Ceramic) @:dVIN=4-9V Io=30mA Co=1µF(Ceramic) Load Regulation : dVo/dIo (%/mA) Line Regulation : dVo/dIo (%/V) 0.025 0.05 0 -0.05 0.015 0.01 0.005 0 -0.1 -50 0 50 100 o Temperature : Ta ( C) Ver.2004-12-24 0.02 150 -50 0 50 100 150 o Temperature : Ta ( C) -9- NJM2892 ELECTRICAL CHARACTERISTICS NJM2892_3.0V Short Circuit Current v.s. Temperature NJM2892_3.0V Output Voltage v.s. Temperature 200 4 @:V IN=4V Output is short to ground. Co=1µF(Ceramic) 3.5 Short Circuit Current : ISC (mA) 2.5 2 1.5 1 150 100 50 @:VIN=4V Io=30mA Co=1µF(Ceramic) 0.5 0 0 0 50 100 150 200 -50 o 0 Output Voltage : Vo [V] 7 5 6 0 4 -5 3 -10 Output Voltage 2 -15 -20 o @:Ta=25 C VIN=4.0V Co=1.0µF(Ceramic) Io=0mA -1 -0.5 0 0.5 1 1.5 2 2.5 Time : t [mS] 3 3.5 4 10 5 Control Voltage 5 Output Voltage : Vo [V] Control Voltage 10 Control Voltage : Vo [V] 6 0 -5 3 -10 Output Voltage 2 -15 1 -25 0 -30 -1 4.5 3.06 7 3.08 6 3.06 5 3.04 3.02 4 3 3 0 2 2.98 2 1 o @:Ta=25 C Co=1.0µF(Ceramic) Io=30mA 0 2.92 - 10 - 40 60 80 100 Time : t [µ µS] 120 140 160 -1 180 Output Voltage : Vo [V] Output Voltage 20 4 6 8 10 Time : t [mS] 12 14 16 18 150 100 Output Current Inputo Voltage : VIN [V] Output Voltage : Vo [V] Input Voltage 0 -25 -30 -2 3.04 -20 -20 o @:Ta=25 C VIN=4.0V Co=1.0µF(Ceramic) Io=30mA NJM2892_3.0V Load Transient Response 3.08 2.94 0 4 NJM2892_3.0V Line Transient Response 2.96 150 NJM2892_3.0V ON/OFF Transient Response 7 1 100 Temperature : Ta ( C) NJM2892_3.0V ON/OFF Transient Response Without Load 5 50 o Temperature Ta ( C) Control Voltage : Vo [V] -50 50 3.02 0 Output Voltage 3 -50 2.98 2.96 2.94 -100 -150 o @:Ta=25 C V IN=4.0V Co=1.0µF(Ceramic) Io=30mA 2.92 -120 -100 Output Current : Io [mA] Output Voltage Vo (V) 3 -200 -250 -80 -60 -40 -20 0 Time : t [µ µS] 20 40 60 80 Ver.2004-12-24 NJM2892 [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. Ver.2004-12-24 - 11 -