 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| NJM2890 2ch LOW DROPOUT VOLTAGE REGULATOR GENERAL DESCRIPTION The NJM2890 is a dual low dropout voltage regulator. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. FEATURES High Ripple Rejection 70dB typ. (f=1kHz,Vo=3V Version) Output Noise Voltage Vno=30Vrms typ.(Cp=0.01F) Output capacitor with 1.0uF ceramic capacitor (Vo2.7V) Output Current Io(max.)=150mA x 2ch High Precision Output Vo1.0% Low Dropout Voltage 0.10V typ. (Io=60mA) Operating Voltage Range +2.5V+14V (Vo2.0V version) ON/OFF Control (Active High) Internal Short Circuit Current Limit Internal Thermal Overload Protection Bipolar Technology Package Outline VSP10 PIN CONFIGURATION PACKAGE OUTLINE NJM2890R 10 9 8 7 6 PIN FUNCTION 1. CONTROL1 2. VIN1 3. GND 4. VIN2 5. CONTROL2 6. NOISE BYPASS2 7. VOUT2 8. GND 9. VOUT1 10. NOISE BYPASS1 12345 NJM2890R EQUIVALENT CIRCUIT VIN1/ VIN2 Cont1/Cont2 Thermal Protection Bandgap Reference VOUT1/ VOUT2 Noise Bypass1 / Noise Bypass2 GND NJM2890 (Ta=25C) RATINGS UNIT +14 V +14(*1) V 320 mW -40 +85 C -40 +125 C (*1) When input voltage is less than +14V, the absolute maximum control voltage is equal to the input voltage. OPERATING RANGE VIN= VIN=+2.5V +14.0V (In case of Vo<2.1V version) ELECTRICAL CHARACTERISTICS (Vo>2.0V version : 1CH/2CH : VIN=Vo+1V, CIN=0.1F, Co=1.0uF: Vo2.7V (Co=2.2uF: Vo2.6V), Cp=0.01F, Ta=25C) PARAMETER Output Voltage Quiescent Current Quiescent Current at Control OFF Output Current Line Regulation Load Regulation Dropout Voltage Ripple Rejection Average Temperature Coefficient of Output Voltage Output Noise Voltage Control Voltage for ON-state Control Voltage for OFF-state SYMBOL Vo IQ IQ(OFF) Io Vo/VIN Vo/Io VI-O RR Vo/Ta VNO VCONT(ON) VCONT(OFF) Io=30mA Io=0mA, expect Icont VCONT=0V Vo-0.3V VIN=Vo+1V Vo+6V, Io=30mA Io=0 100mA Io=60mA ein=200mVrms,f=1kHz, Io=10mA, Vo=3V Version Ta=085C, Io=10mA f=10Hz80kHz, Io=10mA, Vo=3V Version TEST CONDITION MIN. -1.0% - - 150 - - - - - - 1.6 - TYP. - 120 - 200 - - 0.10 70 50 30 - - MAX. +1.0% 180 100 0.10 0.03 0.18 - - - - 0.6 UNIT V A nA mA %/V %/mA V dB ppm/C Vrms V V ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Control Voltage VCONT Power Dissipation PD Operating Temperature Topr Storage Temperature Tstg (Vo2.0V version : 1CH/2CH : VIN=Vo+1V, CIN=0.1F, Co=2.2uF, Cp=0.01F, Ta=25C) PARAMETER Output Voltage Quiescent Current Quiescent Current at Control OFF Output Current Line Regulation Load Regulation Ripple Rejection Average Temperature Coefficient of Output Voltage Output Noise Voltage Control Voltage for ON-state Control Voltage for OFF-state SYMBOL Vo IQ IQ(OFF) Io Vo/VIN Vo/Io RR Vo/Ta VNO VCONT(ON) VCONT(OFF) Io=30mA Io=0mA, expect Icont VCONT=0V Vo-0.3V VIN=Vo+1V Vo+6V, Io=30mA Io=0 100mA ein=200mVrms,f=1kHz, Io=10mA, Vo=1.8V Version Ta=085C, Io=10mA f=10Hz80kHz, Io=10mA, Vo=1.8V Version TEST CONDITION MIN. -1.0% - - 150 - - - - - 1.6 - TYP. - 120 - 200 - - 75 50 22 - - MAX. +1.0% 180 100 0.10 0.03 - - - - 0.6 UNIT V A nA mA %/V %/mA dB ppm/C Vrms V 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. NJM2890 OUTPUT VOLTAGE RANK LIST Device Name CH1 NJM2890R2121 2.1V NJM2890R2727 2.7V NJM2890R2818 2.8V NJM2890R2828 2.8V NJM2890R0318 3.0V NJM2890R0303 3.0V NJM2890R3325 3.3V NJM2890R3333 3.3V NJM2890R0403 4.0V NJM2890R0521 5.0V Vout CH2 2.1V 2.7V 1.8V 2.8V 1.8V 3.0V 2.5V 3.3V 3.0V 2.1V TEST CIRCUIT NOISE BYPASS1 A ICONT1 VCONT1 V CONTROL Cp=0.01F A IIN1 VIN1 0.1F VIN1 VOUT1 1.0F*2 (Ceramic) IOUT1 VOUT1 V NJM2890 GND GND A IIN2 VIN2 0.1F VIN2 VOUT2 1.0F*2 (Ceramic) NOISE BYPASS2 IOUT2 VOUT2 V A ICONT2 VCONT2 CONTROL V Cp=0.01F *2 Vo2.6V version: Co=2.2F(ceramic) NJM2890 TYPICAL APPLICATION 1 In the case where ON/OFF Control is not required: CONTROL R (0300k) NOISE BYPASS1 Cp=0.01F VIN1 VIN1 VOUT1 1.0F *3 VOUT1 0.1F NJM2890 GND GND VIN2 VIN2 VOUT2 VOUT2 1.0F*3 0.1F R (0300k) CONTROL NOISE BYPASS2 Cp=0.01F *3 Vo2.6V version: Co=2.2F 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". NJM2890 2 In use of ON/OFF CONTROL: CONTROL R (0300k) NOISE BYPASS1 Cp=0.01F VIN1 VIN1 VOUT1 VOUT1 1.0F*3 0.1F NJM2890 GND GND VIN2 VIN2 VOUT2 VOUT2 1.0F*3 0.1F R (0300k) CONTROL NOISE BYPASS2 Cp=0.01F *3 Vo2.6V version: Co=2.2F State of control terminal: *"H" output is enabled. * "L" or "open" output is disabled. Noise bypass Capacitance Cp Noise bypass capacitance Cp reduces noise generated by band-gap reference circuit. Noise level and ripple rejection will be improved when larger Cp is used. Use of smaller Cp value may cause oscillation. Use the Cp value of 0.01F greater to avoid the problem. NJM2890 ELECTRICAL CHARACTERISTICS NJM2890_3.0V Output Voltage vs. Input Voltage @:Ta=25oC Co=1.0F(Ceramic) Cp=0.01F 3.1 3.2 4 3.5 NJM2890_3.0V Output Voltage vs. Output Current @:Ta=25 C VIN=4V Co=1.0F(Ceramic) Cp=0.01F o 3 Output Voltage : Vo(V ) Vo(V (V) Io=0A 3 Output Voltage : Vo(V) 3.2 3.3 3.4 2.5 2 2.9 Io=30mA 2.8 Io=100mA 1.5 1 0.5 0 0 0.05 0.1 0.15 0.2 0.25 0.3 2.7 2.7 2.8 2.9 3 3.1 Input Voltage : V IN(V) Output Current : Io(A) 20 NJM2890_3.0V Groun d Pin Current vs. Ou tput Cu rren t @:Ta=25oC VIN=4V Co=1.0F(Ceramic) Cp=0.01F 0.3 NJM2890_3.0V Dropout Voltage vs. O utput Current @:Ta=25oC Co=1.0F(Ceramic) Cp=0.01F 0.25 G ND( mA Ground Pi n Current : I ND (mA) (mA) 15 Dropout Voltage:dV I-O ( V) Voltage:dVI-O 0 50 100 150 200 0.2 10 0.15 0.1 5 0.05 0 0 0 50 100 150 200 Output Current : Io(mA) Output Current:Io(mA) 60 NJM2890_3.0V Control Curre nt vs. Control Voltage @:Ta=25oC VIN=4V Co=1.0F(Ceramic) Cp=0.01F Io=30mA 4 NJM2890_3.0V Output Voltage vs. Control Voltage 50 3.5 Control Curre nt : Ico nt( A) 3 Rc=0 40 Output Voltage : Vo(V ) Vo(V (V) 2.5 Rc=100k 30 2 1.5 20 Rc=0 10 Rc=100k Rc=50k 1 0.5 Rc=50k 0 0.5 @:Ta=25 C VIN=4V Co=1.0F(Ceramic) Cp=0.01F Io=30mA 0 0.5 1 1.5 2 2.5 3 o 0 1 1.5 2 2.5 0 3.5 4 Control Voltage : Vcont(V) 3 Control Voltage : Vcont(V) NJM2890 ELECTRICAL CHARACTERISTICS NJM2890_3.0V Load Regulati on vs. Ou tput Curren t @:Ta=25oC VIN=4V Co=1.0F(Ceramic) Cp=0.01F 2000 0 NJM2890_3.0V Qui escent Curren t v.s. In put Voltage1 @:Ta=25oC Output is open. Co=1.0F(Ceramic) Cp=0.01F including Icont -10 Load Regu lati on : dVo/dIo(mV) dVo/dIo(m (mV) -20 Quiescent Current : IQ (A) IQ ( 0 50 100 150 200 1500 1000 -30 500 -40 -50 0 0 5 10 15 Output Current : Io(mA) VIN Input Vol tage : VIN(V) 300 NJM2890_3.0V Output Noi se Voltage vs. Noise Bypass Capacitor @:Ta=25oC VIN=4.0V Co=1.0F(Ceramic) 100 NJM2890_3.0V Output Noise Voltage vs. Output Current @:Ta=25 C VIN=4.0V Cp=0.01F LPF:100kHz o 250 Outpu t Noise Vol tage : Vn( Vrms) Vn( 200 Outpu t Noise Vol tage : Vn( Vrms) Vn( 80 60 Co=1.0F(Ceramic) 40 150 100 50 20 Co=2.2F(Ceramic) 0 1p 10p 100p 1000p 0.01m 0.1m 0 0.001 0.01 0.1 1 10 100 Noise Bypass Capacitor : Cp(F) Output Current : Io(mA) 90 NJM2890_3.0V Ripple Rejection Ratio vs. Frequency Io=0mA 80 Ri pple Rejecti on Ratio : RR (dB) Io=10mA 70 Io=30mA 60 50 @:Ta=25oC Co=1.0F(Ceramic) Cp=0.01F VIN=4V ein=200mVrms 10 100 1k 10k 100k 40 30 Frequency : f (Hz) NJM2890 ELECTRICAL CHARACTERISTICS NJM2890_3.0V Ripple Re je ction vs. Output Curre nt(Vo=3.0V) 80 100 NJM2890_3.0V Equivalent Serise Re sistance vs. Output Current @:Ta=25oC VIN=4V Co=1.0F(Ceramic) Cp=0.01F 70 Equivalent Serise Re sistance : ESR( ) ESR( f=1kHz Ripple Re jection : RR(dB) 10 60 f=10kHz 50 @:Ta=25oC VIN=4V ein=200mVrms Co=1.0F(Ceramic) Cp=0.01F 1 Oscillation Free 40 0.1 30 0.001 0.01 0.1 1 10 100 0.02 1 10 100 1m 10m 100m Output Current : Io(mA) Output Curre nt : Io(mA) 0.3 NJM2890_3.0V Dropout Vol tage vs. Temperature @:VIN=4V Io=60mA Co=1.0F(Ceramic) Cp=0.01F 2 NJM2890_3.0V Control Voltage vs. Temperature 0.25 Control Voltage : VC ON T( OFF ) (V) VCONT(OFF) 1.5 Dropout Voltage:dV I-O (V) Voltage:dVI-O 0.2 0.15 1 0.1 0.5 @:VIN=4V Output is Open. Co=1.0F(Ceramic) Cp=0.01F 0 -50 0 50 100 150 0.05 0 -50 0 o Temperature : Ta ( C) 50 o 100 150 o Temperature : Ta ( C) o 3.1 NJM2890_3.0V Output Voltage v.s Temperature NJM2890_3.0V Quiescent Current v.s. Temperature 300 @:VIN=4V Output is open. Co=1.0F(Ceramic) Cp=0.01F including Icont 250 3.05 Output Voltage : Vo [V] Quiescent Current : IQ (A) IQ ( 150 200 3 150 100 2.95 VIN=4V Io=30mA Co=1.0A Cp=0.01A -50 0 50 o Temperature Ta ( C) o 50 2.9 100 0 -50 0 50 Temperature : Ta ( C) o 100 150 NJM2890 ELECTRICAL CHARACTERISTICS NJM2890_3.0V Line Regulation v.s. Temperature 0.1 @:dVIN=4-9V Io=30mA Co=1.0F(Ceramic) Cp=0.01F 0.03 NJM2890_3.0V Load Regulation v.s. Temperature @:Ta=25 C VIN=4.0V Co=1.0F(Ceramic) Cp=0.01F Io=0-100mA o 0.025 0.05 Road Regulation : dVo/dIo (%/mA) Line Regulation : dVo/dIo (%/V) 0.02 0 0.015 0.01 -0.05 0.005 -0.1 -50 0 0 50 Temperature : Ta ( C) o 100 150 -50 0 o Temperature : Ta ( C) 50 o 100 150 3.5 NJM2890_3.0V Output Voltage vs. Temperature NJM2890_3.0V Short Ci rcuit Current v.s. Temperature 400 350 @:VIN=4V Output is short to ground. Co=1.0F(Ceramic) Cp=0.01F 3 Short Ci rcui t Current : IS C (mA) ISC 50 100 o Output Voltage : Vo (V) 2.5 300 250 200 150 2 1.5 1 VIN=4V Io=30mA Co=1.0F Cp=0.01F 100 50 0 -50 0 0.5 0 -50 0 150 200 Temperature : Ta ( C) Temperature : Ta ( C) 50 o 100 150 NJM2890_3.0V ON/OFF Trans ie nt Re sponse 7 6 5 Output Vo lt ag e : Vo [ V] 4 Output Voltage 3 2 1 0 -1 0 4 8 12 Time : t [mS] 16 20 -10 -15 -20 -25 -30 Control Voltage 10 5 0 -5 7 6 5 Output Vo lt ag e : Vo [ V] 4 3 NJM2890_3.0V ON/OFF Trans ie nt Response without load 10 5 Control Voltage 0 -5 -10 Output Voltage 2 1 0 -1 0 1 2 3 Time : t [mS] 4 5 -15 -20 -25 -30 Co nt rol Voltag e : Vo [V] @:Ta=25 C VDD=4.0V Co=1.0F(Ceramic) Cp=0.01F Io=30mA o @:Ta=25 C VDD=4.0V Co=1.0F(Ceramic) Cp=0.01F Io=0mA o Co nt rol Voltag e : Vo [V] NJM2890 ELECTRICAL CHARACTERISTICS NJM2890_3.0V Lo ad Transient Re spons e 3.1 3.08 3.06 Output Vo ltag e : Vo [ V] 3.04 3.02 Output Voltage 3 2.98 2.96 2.94 0 40 80 120 [ Time : t [ S] 160 200 -100 -150 -200 -250 Output Current 150 100 50 0 -50 3.1 3.08 Input Volage Output Cuurent : Io [mA] 3.06 Output Vo ltag e : Vo [ V] 3.04 3.02 Output Voltage 3 2.98 2.96 2.94 0 40 80 120 [ Time : t [ S] 160 200 1 0 -1 -2 4 3 2 Input Voltage : V I N [V] VIN NJM2890_3.0V Line Transie nt Re sponse 6 5 @:Ta=25 C VDD=4.0V Co=1.0F(Ceramic) Cp=0.01F o @:Ta=25 C VDD=4.0V Co=1.0F(Ceramic) Cp=0.01F Io=30mA o [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. |
Price & Availability of NJM2890R
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |