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| NJM2881/82 LOW DROPOUT VOLTAGE REGULATOR GENERAL DESCRIPTION NJM2881/82 is a low dropout voltage regulator with ON/OFF control. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. It is mounted on SOT-23-5 as small package and 1.0F ceramic capacitor is available. Therefore it is suitable for cellular phone, camcorder, IC decoder, camera, and other portable items. FEATURES High Ripple Rejection 75dB typ. (f=1kHz ,Vo=3V version) Low Output Noise Voltage Vno=30Vrms (Cp=0.01F) Output capacitor with 1.0F ceramic capacitor (Vo2.7V) Output Current Io(max.)=300mA High Precision Output Vo1.0% Low Dropout Voltage 0.10V typ. (Io=100mA) ON/OFF Control (Active High) Internal Short Circuit Current Limit Internal Thermal Overload Protection Bipolar Technology Package Outline SOT-23-5 PIN CONFIGURATION 5 4 PACKAGE OUTLINE NJM2881/82F 123 1. 2. 3. 4. 5. CONTROL (Active High) GND NOISE BYPASS VOUT VIN 5 4 123 1. 2. 3. 4. 5. VIN GND CONTROL (Active High) NOISE BYPASS VOUT NJM2881F NJM2882F EQUIVALENT CIRCUIT VIN Control Bandgap Reference Thermal Protection V OUT Noise Bypass GND Ver.2004-12-22 -1- NJM2881/82 OUTPUT VOLTAGE RANK LIST(* : Under development) Device Name VOUT Device Name NJM288*F15 1.5V NJM288*F31 NJM288*F17 1.7V NJM288*F33 NJM288*F18 1.8V NJM288*F345 NJM288*F21 2.1V NJM288*F35 NJM288*F25 2.5V NJM288*F38 NJM288*F28 2.8V NJM288*F04 *NJM288*F285 2.85V NJM288*F43 NJM288*F29 2.9V *NJM288*F47 NJM288*F03 3.0V NJM288*F05 ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Control Voltage VCONT VOUT 3.1V 3.3V 3.45V 3.5V 3.8V 4.0V 4.3V 4.7V 5.0V (Ta=25C) RATINGS UNIT +14 V +14(*1) V 350(*2) Power Dissipation PD SOT-23-5 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 +6V (In case of Vo<2.1V) ELECTRICAL CHARACTERISTICS (Vo>2.0V version: VIN=Vo+1V, CIN=0.1F, Co=1.0F: Vo2.7V (Co=2.2F: 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) TEST CONDITION Io=30mA Io=0mA, except Icont VCONT=0V Vo-0.3V VIN=Vo+1V Vo+6V, Io=30mA Io=0 300mA Io=100mA ein=200mVrms,f=1kHz,Io=10mA, Vo=3V version Ta=0 85C, Io=10mA f=10Hz 80kHz, Io=10mA, Vo=3V version MIN. -1.0% 300 1.6 - TYP. 120 400 0.10 75 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 -2- Ver.2004-12-22 NJM2881/82 ELECTRICAL CHARACTERISTICS (Vo2.0V version: VIN=Vo+1V, CIN=0.1F, Co=2.2F: Vo1.9V (Co=4.7F: Vo1.8V), 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 TEST CONDITION Io=0mA, except ICONT VCONT=0V Vo-0.3V VIN=Vo+1V Vo+6V, Io=30mA Io=0 300mA ein=200mVrms,f=1kHz,Io=10mA, Vo=1.8V version Ta=0 85C, Io=10mA f=10Hz 80kHz, Io=10mA, Vo=1.8V version MIN. -1.0% 300 1.6 - TYP. 120 400 80 50 20 - 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. TEST CIRCUIT A VIN IIN VIN VOUT IOUT VOUT V 0.1F NJM2881/82 1.0F *4 (ceramic) A VCONT ICONT CONTROL GND NOISE BYPASS Cp=0.01F V *4 1.9V Vo 2.6V version: Co=2.2F(ceramic) Vo 1.8V version: Co=4.7F(ceramic) Ver.2004-12-22 -3- NJM2881/82 TYPICAL APPLICATION 1 In the case where ON/OFF Control is not required: VIN 0.1F 1.0F *5 NJM2881/82 R (0300k) CONTROL GND NOISE BYPASS Cp=0.01F VOUT VOUT VIN *5 1.9V Vo 2.6V version: Co=2.2F Vo 1.8V version: Co=4.7F 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 VOUT VIN VOUT 1.0F *5 0.1F R CONTROL GND NOISE BYPASS Cp=0.01F NJM2881/82 *5 1.9V Vo 2.6V version: Co=2.2F Vo 1.8V version: Co=4.7F 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 0.01uF greater to avoid the problem. -4- Ver.2004-12-22 NJM2881/82 POWER DISSIPATION vs. AMBIENT TEMPERATURE NJM2881/82F 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() Ver.2004-12-22 -5- NJM2881/82 ELECTRICAL CHARACTERISTICS NJM2881/82_3.0V Output Voltage v.s. Input Voltage 3.5 3.4 @:Ta=25 C Co=1.0uF(Ceramic) Cp=0.01uF o NJM2881/82_3.0V Output Voltage vs. Output Current 3 Output Voltage :Vo [V] Output Voltage :Vo [V] Io=100mA 3.2 2.5 Io=0A 3 2 1.5 2.8 1 0.5 2.6 Io=300mA 0 2.6 2.8 3 3.2 3.4 0 100 200 300 @:Ta=25 C Co=1.0uF(Ceramic) Cp=0.01uF o 400 500 600 Input Voltage :Vin [V] Output Current :Io [mA] NJM2881/82_3.0V Ground Pin Current vs. Output Voltage 20 @:Ta=25 C Co=1.0uF(Ceramic) Cp=0.01uF 15 o NJM2881/82_3.0V Dropout Voltage vs. Output Current 0.3 @:Ta=25 C Co=1.0uF(Ceramic) Cp=0.01uF 0.25 o Ground Pin Current :IGND [mA] Dropout Voltage :dVi-o [V] 0 100 200 300 400 500 0.2 10 0.15 0.1 5 0.05 0 0 0 100 200 300 400 500 Output Current :Io [mA] Output Current :Io [mA] NJM2881/82_3.0V Control Current v.s. Control Voltage 20 @:Ta=25 C Co=1.0uF(Ceramic) Cp=0.01uF Io=30mA o NJM2881/82_3.0V Output Voltage v.s. Control Voltage 4 3.5 Control Current :Icont [uA] Output Voltage :Vo [V] 15 3 Rc=0 2.5 Rc=50k 2 Rc=100k 1.5 10 Rc=100k Rc=50k Rc=0 5 1 0.5 @:Ta=25 C Vin=4.0V Co=1.0uF(Ceramic) Cp=0.01uF Io=30mA 0 0.5 1 1.5 2 2.5 3 o 0 0 0.5 1 1.5 2 2.5 3 0 Control Voltage :Vcont [V] Control Voltage :Vcont [V] -6- Ver.2004-12-22 NJM2881/82 ELECTRICAL CHARACTERISTICS NJM2881/82_3.0V Peak Output Current vs. Input Voltage 1000 NJM2881/82_3.0V Load Regulation vs. Output Current 0 -10 800 -20 Peak Output Current :Io MAX [mA] Load Regulation :dVo/dIo [mV] 600 -30 400 -40 -50 @:Ta=25 C VIN=4V Co=1.0uF(Ceramic) Cp=0.01uF 0 100 200 300 400 500 o 200 @:Ta=25 C Co=1.0uF(Ceramic) Cp=0.01uF 0 4 6 8 10 12 14 o -60 Output Current :Io [mA] Input Voltage :Vin [V] NJM2881/82_3.0V Quiescent Current v.s. Input Voltage 2000 @:Ta=25 C Output is open. Co=1.0uF(Ceramic) Cp=0.01uF including Icont o 200 NJM2881/82_3.0V Output Noise Voltage vs. Noise Bypass Capacitor @:Ta=25 C VIN=4V Co=1.0uF (Ceramic) Io=10mA o Output Noise Voltage : Vn(uVrms) 1600 Quiescent Current : Iq [uA] 150 1200 100 800 50 400 0 0 5 10 15 0 0.000001 0.00001 0.0001 0.001 0.01 0.1 Input Voltage :Vin [V] Noise Bypass Capacitor : Cp(uF) 100 NJM2881/82_3.0V Output Noise Voltage vs. Output Current @:Ta=25 C VIN=4V Co=1.0uF(Ceramic) Cp=0.01uF o NJM2881/82_3.0V Ripple Rejection Ratio v.s. Frequency 100 Io=0mA Output Noise Voltage :Vn [uVrms] 80 80 Ripple Rejection Ratio :RR [dB] Io=10mA Io=30mA 60 60 40 40 20 20 @:Ta=25 C VIN=4.0V ein=200mVrms Co=1.0uF(Ceramic) Cp=0.01uF 1k 1000 4 10k 10 5 100k 10 o 0 0.001 0 0.01 0.1 1 10 100 10 10 100 Output Current :Io [mA] Frequency :f [Hz] Ver.2004-12-22 -7- NJM2881/82 ELECTRICAL CHARACTERISTICS NJM2881/82_3.0V Ripple Rejection vs. Output Current 100 f=1kHz 100 @:Ta=25 C VIN=4V Co=1.0uF(Ceramic) Cp=0.01uF 10 o NJM2881/82_3.0V Equivalent Series Resistance vs. Output Current 80 60 f=10kHz Equivalent Series Resistance :ESR [ohm] Ripple Rejection : RR (dB) STABLE REGION 1 40 20 @:Ta=25 C VIN=4.0V ein=200mVrms Co=1.0uF(Ceramic) Cp=0.01uF 0.01 0.1 1 10 100 1000 o 0.1 0 0.001 0.02 0.001 0.01 0.1 1 10 100 1000 Output Current : Io(mA) Output Current :Io [mA] NJM2881/82_3.0V f v.s. Dropout Voltage[^ 1Temperature 0.3 @:Io=100mA Co=1.0uF(Ceramic) Cp=0.01uF 0.25 NJM2881/82_3.0V Control Voltage v.s. Temperature 2 @:VIN=4V Output is open. Co=1.0uF(Ceramic) Cp=0.01uF 0.2 Control Voltage :Vcont-off [V] 1.5 Dropout Voltage : Vi-o [V] 0.15 1 0.1 0.5 0.05 0 -50 0 50 100 o 150 0 -50 0 50 100 o 150 Temperature :Ta [ C] Temperature :Ta [ C] NJM2881/82_3.0V Quiescent Current v.s. Temperature 300 @:VIN=4V Output is open Co=1.0uF(Ceramic) Cp=0.01uF Include Icont NJM2881/82_3.0V Output Voltage v.s. Temperature 3.1 @:VIN=4V Io=30mA Co=1.0uF(Ceramic) Cp=0.01uF 3.05 250 Quiescent Current : Iq [uA] -50 0 50 100 o Output Voltage :Vo [V] 200 3 150 100 2.95 50 2.9 150 0 -50 0 50 100 o 150 Temperature :Ta [ C] Temperature :Ta [ C] -8- Ver.2004-12-22 NJM2881/82 ELECTRICAL CHARACTERISTICS NJM2881/82_3.0V Line Regulation v.s. Temperature 0.2 @:VIN=4.0-9.0V Io=30mA Co=1.0uF(Ceramic) Cp=0.01uF 0.1 0.03 @:VIN=4.0V Io=0-100mA Co=1.0uF(Ceramic) Cp=0.01uF NJM2881/82_3.0V Load Regulation v.s. Temperature 0.025 Load Regulation :dVo/dIo [%/mA] -50 0 50 100 o Line Regulation :dVo/dVin [%/V] 0.02 0 0.015 0.01 -0.1 0.005 -0.2 150 0 -50 0 50 100 o 150 Temperature :Ta [ C] Temperature :Ta [ C] NJM2881/82_3.0V Output Voltage v.s. Temperature 3.5 200 NJM2881/82_3.0V Short Circuit Current v.s. Temperature @:VIN=4.0V Output is short to ground. Co=1.0uF(Ceramic) Cp=0.01uF 3 Short Circuit Current :Isc [mA] 50 100 o 150 2.5 Output Voltage :Vo [V] 2 100 1.5 1 @:VIN=4.0V Io=30mA Co=1.0uF(Ceramic) Cp=0.01uF 50 0.5 0 -50 0 150 200 0 -50 0 50 100 o 150 Temperature :Ta [ C] Temperature :Ta [ C] NJM2881_3.0V ON/OFF Transient Response without Load 20 12 @:Ta=25oC VDD=4.0V Co=1.0uF(Ceramic) Cp=0.01uF Io=0mA Control Voltage 12 NJM2881_3.0V ON/OFF Transient Response 20 @:Ta=25 C VDD=4.0V Co=1.0uF(Ceramic) Cp=0.01uF Io=30mA Control Voltage o 15 10 15 10 Output Voltage : Vo [V] 10 Control Voltage : Vo [V] Output Voltage : Vo [V] 8 10 Control Voltage : Vo [V] 8 5 5 6 0 6 0 4 Output Voltage -5 4 Output Voltage -5 -10 2 -15 0 -20 0 1 2 3 Time : t [S] 4 5 0 4 8 12 Time : t [mS] 16 20 0 2 -10 -15 -20 Ver.2004-12-22 -9- NJM2881/82 ELECTRICAL CHARACTERISTICS NJM2881/82_3.0V Load Transient Response 3.12 @:Ta=25 C VDD=4.0V Co=1.0uF(Ceramic) Cp=0.01uF o NJM2881/82_3.0V Input Transient Response 400 3.12 @:Ta=25 C VDD=4.0V Co=1.0uF(Ceramic) Cp=0.01uF Io=30mA Input Voltage 3.06 4 3.04 2 3.02 Output Voltage 0 3 -2 o 10 3.1 Output Current 3.08 Output Voltage : Vo [V] 350 3.1 8 6 Output Voltage : Vo [V] 3.06 250 3.04 200 3.02 Output Voltage 3 150 100 2.98 50 2.98 2.96 0 40 80 120 Time : t [uS] 160 200 0 2.96 0 40 80 120 Time : t [uS] 160 200 -4 [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. - 10 - Ver.2004-12-22 Input Voltage : VIN [V] 300 Output Current : Io [mA] 3.08 |
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