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 1.0µF ceramic capacitor is available. Therefore it is suitable for cellular phone, camcorder, IC decoder, camera, and other portable items. PACKAGE OUTLINE NJM2881/82F FEATURES High Ripple Rejection 75dB typ. (f=1kHz ,Vo=3V version) Low Output Noise Voltage Vno=30µVrms (Cp=0.01µF) Output capacitor with 1.0µF ceramic capacitor (Vo≥2.7V) Output Current Io(max.)=300mA High Precision Output Vo±1.0% 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 1 2 3 1. 2. 3. 4. 5. CONTROL (Active High) GND NOISE BYPASS VOUT VIN NJM2881F 5 4 1 2 3 1. 2. 3. 4. 5. VIN GND CONTROL (Active High) NOISE BYPASS VOUT NJM2882F EQUIVALENT CIRCUIT VIN V OUT Control Thermal Protection Bandgap Reference 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 VOUT 3.1V 3.3V 3.45V 3.5V 3.8V 4.0V 4.3V 4.7V 5.0V 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-23-5 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=0.1µF, Co=1.0µF: Vo≥2.7V (Co=2.2µF: Vo≤2.6V), Cp=0.01µF, Ta=25°C) PARAMETER SYMBOL Output Voltage Vo Quiescent Current Quiescent Current at Control OFF Output Current Line Regulation Load Regulation IQ IQ(OFF) Io ∆Vo/∆VIN ∆Vo/∆Io Dropout Voltage ∆VI-O Ripple Rejection RR TEST CONDITION MIN. TYP. MAX. UNIT Io=30mA Io=0mA, except Icont VCONT=0V -1.0% - +1.0% V - 120 180 µA - - 100 nA Vo-0.3V 300 - 400 - 0.10 0.03 mA %/V %/mA - 0.10 0.18 V - 75 - dB - ± 50 - ppm/°C VIN=Vo+1V ∼ Vo+6V, Io=30mA Io=0 ∼ 300mA Io=100mA ein=200mVrms,f=1kHz,Io=10mA, Vo=3V version Ta=0 ∼ 85°C, Io=10mA Average Temperature Coefficient of Output Voltage Output Noise Voltage Control Voltage for ON-state VCONT(ON) 1.6 30 - - µVrms V Control Voltage for OFF-state VCONT(OFF) - - 0.6 V -2- ∆Vo/∆Ta VNO f=10Hz ∼ 80kHz, Io=10mA, Vo=3V version Ver.2004-12-22 NJM2881/82 ELECTRICAL CHARACTERISTICS (Vo≤2.0V version: VIN=Vo+1V, CIN=0.1µF, Co=2.2µF: Vo≥1.9V (Co=4.7µF: Vo≤1.8V), Cp=0.01µF, Ta=25°C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT -1.0% - +1.0% V Output Voltage Vo Io=30mA Quiescent Current Quiescent Current at Control OFF Output Current Line Regulation Load Regulation IQ Io=0mA, except ICONT - 120 180 µA VCONT=0V - - 100 nA 300 - 400 - 0.10 0.03 mA %/V %/mA - 80 - dB - ± 50 - ppm/°C - 20 - 1.6 - - 0.6 µVrms V V IQ(OFF) Io ∆Vo/∆VIN ∆Vo/∆Io Ripple Rejection RR Average Temperature Coefficient of Output Voltage Output Noise Voltage ∆Vo/∆Ta Control Voltage for ON-state Control Voltage for OFF-state VCONT(ON) VCONT(OFF) 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 ∼ 85°C, Io=10mA f=10Hz ∼ 80kHz, Io=10mA, Vo=1.8V version VNO 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 IIN A VIN VOUT IOUT VIN 0.1µF A ICONT NJM2881/82 CONTROL V VOUT 1.0µF *4 (ceramic) NOISE BYPASS Cp=0.01µF V VCONT GND *4 1.9V ≤ Vo ≤ 2.6V version: Co=2.2µF(ceramic) Vo ≤ 1.8V version: Co=4.7µF(ceramic) Ver.2004-12-22 -3- NJM2881/82 TYPICAL APPLICATION 1 In the case where ON/OFF Control is not required: VIN VOUT VOUT VIN 0.1µF 1.0µF *5 NJM2881/82 R (0∼300kΩ) NOISE BYPASS CONTROL Cp=0.01µF GND *5 1.9V ≤ 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 VOUT VOUT 1.0µF *5 NJM2881/82 0.1µF R CONTROL NOISE BYPASS Cp=0.01µF GND *5 1.9V ≤ 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. 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(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(℃) Ver.2004-12-22 -5- NJM2881/82 ELECTRICAL CHARACTERISTICS NJM2881/82_3.0V Output Voltage vs. Output Current NJM2881/82_3.0V Output Voltage v.s. Input Voltage 3.5 o @:Ta=25 C Co=1.0uF(Ceramic) Cp=0.01uF 3 3.2 Output Voltage :Vo [V] Output Voltage :Vo [V] 3.4 Io=0A 3 2.8 Io=100mA 2.5 2 1.5 1 o @:Ta=25 C Co=1.0uF(Ceramic) Cp=0.01uF 0.5 Io=300mA 2.6 0 2.6 2.8 3 3.2 3.4 0 100 200 Input Voltage :Vin [V] NJM2881/82_3.0V Ground Pin Current vs. Output Voltage 400 500 600 NJM2881/82_3.0V Dropout Voltage vs. Output Current 20 0.3 o @:Ta=25 C Co=1.0uF(Ceramic) Cp=0.01uF o @:Ta=25 C Co=1.0uF(Ceramic) Cp=0.01uF 0.25 15 Dropout Voltage :dVi-o [V] Ground Pin Current :IGND [mA] 300 Output Current :Io [mA] 10 5 0.2 0.15 0.1 0.05 0 0 0 100 200 300 400 500 0 100 200 300 400 500 Output Current :Io [mA] Output Current :Io [mA] NJM2881/82_3.0V Control Current v.s. Control Voltage NJM2881/82_3.0V Output Voltage v.s. Control Voltage 4 20 o 3.5 15 Output Voltage :Vo [V] Control Current :Icont [uA] @:Ta=25 C Co=1.0uF(Ceramic) Cp=0.01uF Io=30mA 10 Rc=100kΩ Rc=50kΩ Rc=0Ω 5 3 Rc=0Ω 2.5 Rc=50kΩ 2 Rc=100kΩ 1.5 1 o @:Ta=25 C Vin=4.0V Co=1.0uF(Ceramic) Cp=0.01uF Io=30mA 0.5 0 0 0 0.5 1 1.5 2 Control Voltage :Vcont [V] -6- 2.5 3 0 0.5 1 1.5 2 2.5 3 Control Voltage :Vcont [V] Ver.2004-12-22 NJM2881/82 ELECTRICAL CHARACTERISTICS NJM2881/82_3.0V Peak Output Current vs. Input Voltage NJM2881/82_3.0V Load Regulation vs. Output Current 1000 0 -10 Peak Output Current :Io MAX [mA] Load Regulation :dVo/dIo [mV] 800 -20 -30 -40 o @:Ta=25 C VIN=4V Co=1.0uF(Ceramic) Cp=0.01uF -50 600 400 200 o @:Ta=25 C Co=1.0uF(Ceramic) Cp=0.01uF -60 0 0 100 200 300 400 500 4 6 8 Output Current :Io [mA] 10 NJM2881/82_3.0V Quiescent Current v.s. Input Voltage 2000 200 Output Noise Voltage : Vn(uVrms) Quiescent Current : Iq [uA] o @:Ta=25 C VIN=4V Co=1.0uF (Ceramic) Io=10mA 1200 800 400 0 0 5 10 150 100 50 0 0.000001 15 0.01 0.1 Io=0mA 80 Ripple Rejection Ratio :RR [dB] Output Noise Voltage :Vn [uVrms] @:Ta=25 C VIN=4V Co=1.0uF(Ceramic) Cp=0.01uF 40 20 Io=10mA Io=30mA 60 40 o @:Ta=25 C VIN=4.0V ein=200mVrms Co=1.0uF(Ceramic) Cp=0.01uF 20 0 0.01 0.1 1 Output Current :Io [mA] Ver.2004-12-22 0.001 100 60 0 0.001 0.0001 NJM2881/82_3.0V Ripple Rejection Ratio v.s. Frequency NJM2881/82_3.0V Output Noise Voltage vs. Output Current o 80 0.00001 Noise Bypass Capacitor : Cp(uF) Input Voltage :Vin [V] 100 14 NJM2881/82_3.0V Output Noise Voltage vs. Noise Bypass Capacitor o @:Ta=25 C Output is open. Co=1.0uF(Ceramic) Cp=0.01uF including Icont 1600 12 Input Voltage :Vin [V] 10 100 10 10 100 1k 1000 10k4 10 5 100k 10 Frequency :f [Hz] -7- NJM2881/82 ELECTRICAL CHARACTERISTICS NJM2881/82_3.0V Equivalent Series Resistance vs. Output Current NJM2881/82_3.0V Ripple Rejection vs. Output Current 100 100 o Equivalent Series Resistance :ESR [ohm] f=1kHz Ripple Rejection : RR (dB) 80 60 f=10kHz 40 o @:Ta=25 C VIN=4.0V ein=200mVrms Co=1.0uF(Ceramic) Cp=0.01uF 20 0 0.001 @:Ta=25 C VIN=4V Co=1.0uF(Ceramic) Cp=0.01uF 10 STABLE REGION 1 0.1 0.02 0.01 0.1 1 10 100 0.001 1000 0.01 0.1 Output Current : Io(mA) 1 NJM2881/82_3.0V ƒf [ƒ^ Dropout Voltage v.s.1Temperature 100 1000 NJM2881/82_3.0V Control Voltage v.s. Temperature 2 0.3 @:VIN=4V Output is open. Co=1.0uF(Ceramic) Cp=0.01uF @:Io=100mA Co=1.0uF(Ceramic) Cp=0.01uF Control Voltage :Vcont-off [V] 0.25 Dropout Voltage : Vi-o [V] 10 Output Current :Io [mA] 0.2 0.15 0.1 0.05 0 50 100 1 0.5 0 -50 0 -50 1.5 150 0 50 100 150 o o Temperature :Ta [ C] Temperature :Ta [ C] NJM2881/82_3.0V Output Voltage v.s. Temperature NJM2881/82_3.0V Quiescent Current v.s. Temperature 3.1 300 @:VIN=4V Io=30mA Co=1.0uF(Ceramic) Cp=0.01uF @:VIN=4V Output is open Co=1.0uF(Ceramic) Cp=0.01uF Include Icont 250 Quiescent Current : Iq [uA] Output Voltage :Vo [V] 3.05 3 2.95 200 150 100 50 2.9 0 -50 0 50 100 o Temperature :Ta [ C] -8- 150 -50 0 50 100 150 o Temperature :Ta [ C] Ver.2004-12-22 NJM2881/82 ELECTRICAL CHARACTERISTICS NJM2881/82_3.0V Load Regulation v.s. Temperature NJM2881/82_3.0V Line Regulation v.s. Temperature 0.03 0.2 @:VIN=4.0V Io=0-100mA Co=1.0uF(Ceramic) Cp=0.01uF 0.025 Load Regulation :dVo/dIo [%/mA] Line Regulation :dVo/dVin [%/V] @:VIN=4.0-9.0V Io=30mA Co=1.0uF(Ceramic) Cp=0.01uF 0.1 0 -0.1 0.02 0.015 0.01 0.005 -0.2 0 -50 0 50 100 150 -50 0 50 o 150 Temperature :Ta [ C] NJM2881/82_3.0V Short Circuit Current v.s. Temperature NJM2881/82_3.0V Output Voltage v.s. Temperature 200 3.5 @:VIN=4.0V Output is short to ground. Co=1.0uF(Ceramic) Cp=0.01uF Short Circuit Current :Isc [mA] 3 2.5 2 1.5 1 @:VIN=4.0V Io=30mA Co=1.0uF(Ceramic) Cp=0.01uF 0.5 150 100 50 0 0 -50 0 50 100 150 200 -50 0 o 50 100 150 o Temperature :Ta [ C] Temperature :Ta [ C] NJM2881_3.0V ON/OFF Transient Response NJM2881_3.0V ON/OFF Transient Response without Load 20 @:Ta=25oC VDD=4.0V Co=1.0uF(Ceramic) Cp=0.01uF Io=0mA 10 10 Control Voltage 8 @:Ta=25 C VDD=4.0V Co=1.0uF(Ceramic) Cp=0.01uF Io=30mA 15 5 6 0 -5 4 Output Voltage Output Voltage : Vo [V] Output Voltage : Vo [V] 10 20 o 12 Control Voltage : Vo [V] 12 15 10 Control Voltage 8 5 6 0 -5 4 Output Voltage -10 2 Control Voltage : Vo [V] Output Voltage :Vo [V] 100 o Temperature :Ta [ C] -10 2 -15 0 -15 0 -20 0 Ver.2004-12-22 1 2 3 Time : t [S] 4 5 -20 0 4 8 12 Time : t [mS] 16 20 -9- NJM2881/82 ELECTRICAL CHARACTERISTICS NJM2881/82_3.0V Load Transient Response NJM2881/82_3.0V Input Transient Response 3.12 400 3.12 10 350 3.08 300 3.06 250 3.04 200 3.02 150 Output Voltage 3 100 2.98 2.96 0 40 80 120 Time : t [uS] 160 200 3.1 3.08 8 6 Output Voltage : Vo [V] Output Current Output Current : Io [mA] 3.1 Output Voltage : Vo [V] o @: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 Input Voltage : VIN [V] o @:Ta=25 C VDD=4.0V Co=1.0uF(Ceramic) Cp=0.01uF 0 3 50 2.98 0 2.96 -2 -4 0 40 80 120 Time : t [uS] 160 200 [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