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| 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. FEATURES High Ripple Rejection 75dB typ. (f=1kHz Vo=3V version) Output Noise Voltage VNO =45Vrms typ. Output capacitor with 1.0F ceramic capacitor (Vo2.7V) Output Current Io(max.)=100mA x 2ch High Precision Output Vo1.0% 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 PACKAGE OUTLINE NJM2892F1 654 123 NJM2892F1 PIN FUNCTION 1. VOUT2 2. GND 3. VOUT1 4. CONTROL1 5. VIN 6. CONTROL2 Ver.2004-12-24 -1- NJM2892 EQUIVALENT CIRCUIT VIN Control1 Bandgap Reference Thermal Protection VOUT1 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 (Ta=25C) 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=0.1F, Co=1.0F: Vo2.7V (Co=2.2F : 1.8V -3- NJM2892 TEST CIRCUIT A IIN VIN VOUT1 1.0 F *note1 (ceramic) I OUT1 V VOUT1 VIN 0.1 F NJM2892 A I CONT1 CONTROL1 VOUT2 1.0 F *6 (ceramic) I OUT2 VOUT2 V V CONT1 V A I CONT2 CONTROL2 GND V V CONT2 *6 1.8V Ver.2004-12-24 NJM2892 TYPICAL APPLICATION 1 In the case where ON/OFF Control is not required: VIN VIN VOUT1 1.0 F *7 0.1 F R1 (0 300k) CONTROL1 R2 (0 300k) CONTROL2 GND VOUT2 1.0 F *7 V OUT2 V OUT1 NJM2892 *7 1.8V VIN 0.1 F VIN VOUT1 1.0 F *7 V OUT1 NJM2892 R1 R2 CONTROL1 VOUT2 1.0 F *7 V OUT2 CONTROL2 GND *7 1.8V Ver.2004-12-24 -5- NJM2892 POWER DISSIPATION vs. AMBIENT TEMPERATURE NJM2892F1 Power Dissipation (Topr=-40+85,Tj=125,PD=200mW(Ta25)) 500 Power Dissipation PD(mW) 400 On Board(114.3x76.2x1.6mm, FR-4) 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 @:Ta=25 C Co=1.0F(Ceramic) 3.5 3.1 3 o 3.2 4 NJM2892_3.0V Output Voltage vs. Output Current Output Voltage : Vo(V) Output Voltage : Vo(V) Io=0A 3 2.5 2 2.9 1.5 Io=30mA 2.8 Io=100mA 1 @:Ta=25 C VIN=4.0V Co=1F(Ceramic) 0 50 100 150 200 o 0.5 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) NJM2892_3.0V Ground Pin Current v.s. Output Current 15 @:Ta=25 C VIN=4.0V Co=1.0F(Ceramic) 0.25 o 0.3 o NJM2892_3.0V Dropout Voltage vs. Output Current @:Ta=25 C Co=1.0F(Ceramic) Ground Pin Current : IGND (mA) 10 Dropout Voltage:dVI-O (V) 0.2 0.15 5 0.1 0.05 0 0 20 40 60 80 100 120 140 0 0 20 40 60 80 100 120 Output Current : IO(mA) Output Current:Io(mA) 30 NJM2892_3.0V Control Current vs. Control Voltage @:Ta=25oC VIN=4.0V Co=1.0F(Ceramic) Io=30mA 4 NJM2892_3.0V Output Voltage vs. Control Voltage 3.5 25 3 (mA) Rc=0 20 Output Voltage : Vo(V) Control Current : I Cont 2.5 15 2 Rc=50k 1.5 Rc=100k 1 @:Ta=25 oC VIN=4.0V Co=1.0F(Ceramic) Io=30mA 0 0.5 1 1.5 2 Cont 10 Rc=50k 5 Rc=0 0.5 Rc=100k 0 0 0 1 2 Cont 3 2.5 3 Control Voltage : V (V) Control Voltage : V (V) Ver.2004-12-24 -7- NJM2892 ELECTRICAL CHARACTERISTICS NJM2892_3.0V Load Regulation vs. Output Current 0 2000 @:Ta=25 C Output is open. Co=1.0F(Ceramic) including Icont 1500 o NJM2892_3.0V Quiescent Current v.s. Input Voltage -10 Load Regulation : dVo/dIo(mV) -20 -30 -40 Quiescent Current : IQ (mA) @:Ta=25 C VIN=4.0V Co=1.0F(Ceramic) 0 50 100 150 o 1000 -50 -60 500 -70 -80 0 0 5 10 15 Output Current : Io(mA) Input Voltage : VIN(V) 100 NJM2892_3.0V Output Noise Voltage vs. Output Current 100 NJM2892_3.0V Ripple Rejection Ratio v.s. Frequency Output Noise Voltage : Vn( Vrms) 80 @:Ta=25 oC VIN=4.0V LPF:80kHz Co=1.0F 90 Io=0mA Io=10mA Ripple Rejection Ratio : RR (dB) 80 60 70 60 Io=30mA 40 50 40 20 30 @:Ta=25 C VIN=4.0V ein=200mVrms Co=1.0F(Ceramic) Cp=0.01F 10 10 100 100 1k 1000 4 10k 10 5 100k 10 o 0 1 0.001 10 0.01 100 0.1 1m 1 10m 10 100m 100 20 Output Current : Io(A) Frequency : f (Hz) NJM2892_3.0V Equivalent Serise Resistance vs. Output Current 100 @:Ta=25oC Co=1.0F(Ceramic) Cp=0.01F Equivalent Serise Resistance : ESR( ) 10 1 STABLE REGION 0.1 0.01 1 10 100 1m 10m 100m Output Current : Io(A) -8- Ver.2004-12-24 NJM2892 ELECTRICAL CHARACTERISTICS NJM2892_3.0V Control Voltage v.s. Temperature 2 @:VIN=4V Io=30mA Co=1F(Ceramic) 1.5 0.3 NJM2892_3.0V Dropout Voltage v.s. Temperature @:VIN=4V Io=60mA Co=1F(Ceramic) 0.25 0.2 Control Voltage : VCONT(OFF) (V) -50 0 50 100 o Dropout Voltage:dVI-O (V) 0.15 1 0.1 0.5 0.05 0 150 0 -50 0 50 100 o 150 Temperature : Ta ( C) Temperature : Ta ( C) NJM2892_3.0V Output Voltage v.s. Temperature 3.1 @:VIN=4V Io=30mA Co=1F(Ceramic) NJM2892_3.0V Quiescent Current v.s. Temperature 250 200 3.05 Quiescent Current : IQ ( A) Output Voltage Vo (V) 150 3 100 2.95 50 @:VIN=4V Output is open. Co=1F(Ceramic) 2.9 -50 0 50 100 o 0 150 -50 0 50 100 o 150 Temperature Ta ( C) Temperature : Ta ( C) NJM2892_3.0V Line Regulation v.s. Temperature 0.1 @:dVIN=4-9V Io=30mA Co=1F(Ceramic) 0.025 0.05 0.03 NJM2892_3.0V Load Regulation v.s. Temperature @:VIN=4V Io=0-60mA Co=1F(Ceramic) Load Regulation : dVo/dIo (%/mA) Line Regulation : dVo/dIo (%/V) 0.02 0 0.015 0.01 -0.05 0.005 -0.1 -50 0 50 100 o 0 150 -50 0 50 100 o 150 Temperature : Ta ( C) Temperature : Ta ( C) Ver.2004-12-24 -9- NJM2892 ELECTRICAL CHARACTERISTICS NJM2892_3.0V Short Circuit Current v.s. Temperature 200 @:VIN=4V Output is short to ground. Co=1F(Ceramic) NJM2892_3.0V Output Voltage v.s. Temperature 4 3.5 2.5 Short Circuit Current : ISC (mA) @:VIN=4V Io=30mA Co=1F(Ceramic) -50 0 50 100 o 3 150 Output Voltage Vo (V) 2 100 1.5 1 50 0.5 0 150 200 0 -50 0 50 100 o 150 Temperature Ta ( C) Temperature : Ta ( C) NJM2892_3.0V ON/OFF Transient Response Without Load 7 6 5 Output Voltage : Vo [V] 4 3 Output Voltage 2 1 0 -1 -0.5 -15 -20 -25 -30 0 0.5 1 1.5 2 2.5 Time : t [mS] 3 3.5 4 4.5 Control Voltage 10 5 Control Voltage : Vo [V] 0 -5 -10 7 6 5 Output Voltage : Vo [V] 4 3 NJM2892_3.0V ON/OFF Transient Response 10 5 Control Voltage Control Voltage : Vo [V] Output Current : Io [mA] 0 -5 -10 Output Voltage 2 1 0 -1 -2 0 2 4 6 8 10 Time : t [mS] 12 14 16 18 -15 -20 -25 -30 @:Ta=25 C VIN=4.0V Co=1.0F(Ceramic) Io=0mA o @:Ta=25 C VIN=4.0V Co=1.0F(Ceramic) Io=30mA o NJM2892_3.0V Line Transient Response 3.08 3.06 Input Voltage Output Voltage : Vo [V] Inputo Voltage : VIN [V] Output Voltage : Vo [V] 3.04 3.02 3 Output Voltage 2.98 2.96 2.94 2.92 -20 0 20 40 60 80 100 Time : t [S] 120 140 160 2 1 0 -1 180 5 4 3 3.04 3.02 7 6 3.08 3.06 NJM2892_3.0V Load Transient Response 150 100 Output Current 50 0 Output Voltage 3 2.98 2.96 2.94 -50 -100 -150 -200 -250 -80 -60 -40 -20 0 Time : t [S] 20 40 60 80 @:Ta=25 C Co=1.0F(Ceramic) Io=30mA o @:Ta=25 C VIN=4.0V Co=1.0F(Ceramic) Io=30mA o 2.92 -120 -100 - 10 - 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 - |
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