NJM2877 Low Dropout Voltage Regulator GENERAL DESCRIPTION The NJM2877 is a 150mA output low dropout voltage regulator with ON/OFF control. Advanced Bipolar technology achieves low noise, high ripple rejection, High accuracy and low quiescent current. Package line-up is very small package: SC88A and standard package: SOT23-5. Small packaging and 0.47µF small decoupling capacitor make the NJM2877 suitable for space conscious applications. PACKAGE OUTLINE NJM2877F NJM2877F3 FEATURES High Ripple Rejection 75dB typ. (f=1kHz Vo=3V version) Output Noise Voltage Vno=30µVrms typ. (Cp=0.01µF) Output capacitor with 0.47µF ceramic capacitor (Vo≥2.7V Version) Output Current Io(max.)=150mA High Precision Output Vo ±1.0% Low Dropout Voltage 0.10V typ. (Io=60mA) ON/OFF Control (Active High) Internal Thermal Overload Protection Internal Over Current Protection Bipolar Technology Package Outline SC88A, SOT23-5 PIN CONFIGURATION 5 4 1 2 3 1. 2. 3. 4. 5. 5 CONTROL GND NOISE BYPASS VOUT VIN 4 1 2 3 1. 2. 3. 4. 5. CONTROL GND NOISE BYPASS VOUT VIN NJM2877F3 NJM2877F EQUIVALENT CIRCUIT VIN VOUT Control Thermal Protection Bandgap Reference Noise Bypass GND Ver.2011-04-01 -1- NJM2877 OUTPUT VOLTAGE RANK LIST SC88A Package Device Name Vout Device Name Vout NJM2877F3 -15 NJM2877F3 -18 NJM2877F3 -21 NJM2877F3 -22 NJM2877F3 -23 NJM2877F3 -24 NJM2877F3 -25 NJM2877F3 -255 NJM2877F3 -26 NJM2877F3 -27 NJM2877F3 -28 NJM2877F3 -285 NJM2877F3 -29 NJM2877F3 -03 NJM2877F3 -31 NJM2877F3 -32 1.5V 1.8V 2.1V 2.2V 2.3V 2.4V 2.5V 2.55V 2.6V 2.7V 2.8V 2.85V 2.9V 3.0V 3.1V 3.2V NJM2877F3 -33 NJM2877F3 -34 NJM2877F3 -345 NJM2877F3 -35 NJM2877F3 -355 NJM2877F3 -36 NJM2877F3 -38 NJM2877F3 -04 NJM2877F3 -42 NJM2877F3 -45 NJM2877F3 -46 NJM2877F3 -47 NJM2877F3 -48 NJM2877F3 -05 3.3V 3.4V 3.45V 3.5V 3.55V 3.6V 3.8V 4.0V 4.2V 4.5V 4.6V 4.7V 4.8V 5.0V SOT23-5 Package -2- Device Name Vout NJM2877F15 NJM2877F28 NJM2877F03 NJM2877F33 NJM2877F05 1.5V 2.8V 3.0V 3.3V 5.0V Ver.2011-04-01 NJM2877 ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Control Voltage VCONT RATINGS +10 +10(*1) SC88A Power Dissipation (Ta=25°C) UNIT V V PD SOT23-5 250(*2) 350(*2) 200(*3) mW −40 ∼ +85 °C −40 ∼ +125 °C (*1): When input voltage is less than +10V, the absolute maximum control voltage is equal to the input voltage. (*2): Mounted on glass epoxy board based on EIA/JEDEC. (114.3 × 76.2 × 1.6mm: 2Layers FR-4) (*3): Device itself. Operating Temperature Storage Temperature Topr Tstg Operating voltage VIN=+2.3 ∼ +9V (In case of Vo<2.1V version) ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.1µF, Co=0.47µF: Vo≥2.7V (Co=1.0µF : 1.8V<Vo≤2.6V, Co=2.2µF : Vo≤1.8V), Cp=0.01µF, Ta=25°C) PARAMETER SYMBOL MIN. TYP. MAX. UNIT -1.0% − +1.0% V − − 9 V Io=0mA, except Icont − 120 180 µA VCONT=0V − − 100 nA 150 − − − 0.10 0.03 mA %/V %/mA − 200 − − 0.10 0.18 V − 75 − dB Ta=0 ∼ +85°C, Io=10mA − ± 50 − ppm/°C VNO f=10Hz∼80kHz, Io=10mA, Vo=3V Version − 30 − µVrms ICONT VCONT=1.6V − 3 12 µA 1.6 − − − 0.6 V V Output Voltage Vo Input Voltage VIN Quiescent Current Quiescent Current at Control OFF Output Current Line Regulation Load Regulation Dropout Voltage (*4) IQ Ripple Rejection Average Temperature Coefficient of Output Voltage Output Noise Voltage Control Current Control Voltage for ON-state Control Voltage for OFF-state IQ(OFF) Io ∆Vo/∆VIN ∆Vo/∆Io ∆VI−O RR ∆Vo/∆Ta VCONT(ON) VCONT(OFF) TEST CONDITION Io=30mA Vo - 0.3V VIN=Vo+1V ∼ Vo+6V, Io=30mA Io=0 ∼ 100mA Io=60mA ein=200mVrms, f=1kHz, Io=10mA, Vo=3V version − (*4): The output voltage excludes under 2.1V. 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.2011-04-01 -3- NJM2877 TEST CIRCUIT A IIN VIN VIN NJM2877 0.1µF A V VOUT ICONT IOUT *4 0.47µF (Ceramic) V VOUT NOISE BYPASS CONTROL Cp=0.01µF GND VCONT *4: 1.8V<Vo≤2.6V version: Co=1.0µF(Ceramic) Vo≤1.8V version: Co=2.2µF(Ceramic) TYPICAL APPLICATIONS 1 In the case where ON/OFF Control is not required: VIN VIN 0.1µF VOUT NJM2877 VOUT 0.47µF *5 R CONTROL GND NOISE BYPASS Cp=0.01µF *5: 1.8V<Vo≤2.6V version: Co=1.0µF Vo≤1.8V version: Co=2.2µF Connect control terminal to VIN terminal -4- Ver.2011-04-01 NJM2877 2 In use of ON/OFF CONTROL: VIN VIN VOUT NJM2877 0.1µF VOUT 0.47µF *5 R CONTROL GND NOISE BYPASS Cp=0.01µF *5 : 1.8V<Vo≤2.6V version : Co=1.0µF Vo≤1.8V version : Co=2.2µF 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 0.01µF greater to avoid the problem. Input Capacitance CIN Input Capacitance CIN is required to prevent oscillation and reduce power supply ripple for applications with high power supply impedance or a long power supply line. Use the CIN value of 0.1µF greater to avoid the problem. CIN should connect between GND and VIN as short as possible. In the case of using a resistance "R" between VIN and control. The current flow into the control terminal while the IC is ON state (ICONT) can be reduced when a pull up resistance "R" is inserted between VIN and the control terminal. The minimum control voltage for ON state (VCONT (ON)) is increased due to the voltage drop caused by ICONT and the resistance "R". The ICONT is temperature dependence as shown in the "Control Current vs. Temperature" characteristics. Therefore, the resistance "R" should be carefully selected to ensure the control voltage exceeds the VCONT (ON) over the required temperature range. Ver.2011-04-01 -5- NJM2877 Output Capacitance Co Output capacitor (Co) is required for a phase compensation of the internal error amplifier. The capacitance and the equivalent series resistance (ESR) influences stability of the regulator. This product is designed to work with a low ESR capacitor for the Co; however, use of recommended capacitance or greater value is essential for stable operation. Use of a smaller Co may cause excess output noise or oscillation of the regulator due to lack of the phase compensation. Therefore, use Co with the recommended capacitance or greater value and connect between Vo terminal and GND terminal with minimal wiring. The recommended capacitance depends on the output voltage. Low voltage regulator requires greater value of the Co. Thus, check the recommended capacitance for each output voltage. Use of a greater Co reduces output noise and ripple output, and also improves transient response of the output voltage against rapid load change. -6- Ver.2011-04-01 NJM2877 POWER DISSIPATION vs. AMBIENT TEMPERATURE (SC-88A) NJM2877F3 Power Dissipation (Topr=-40~+85°C,Tj=125°C) Power Dissipation P D(mW) 500 400 300 On Board(114.3×76.2×1.6mm, FR-4) 200 100 0 -50 -25 0 25 50 75 100 75 100 Ambient Temperature Ta(°C) NJM2877F Power Dissipation (Topr=-40~+85°C,Tj=125°C) Power Dissipation PD(mW) 500 400 On Board(114.3×76.2×1.6mm, FR-4) 300 device itself 200 100 0 -50 -25 0 25 50 Ambient Temperature Ta(°C) Ver.2011-04-01 -7- NJM2877 TYPICAL CHARACTERISTICS NJM2877_3.0V Output Voltage vs. Input Voltage 3.2 NJM2877_3.0V Output Voltage vs. Output Current 4 o @:Ta=25 C Co=0.47µF(Ceramic) @:Ta=25 oC VIN=4.0V Co=0.47υF(Ceramic) 3.5 3.1 Io=0A Output Voltage : Vo(V) Output Voltage : Vo(V) 3 3 2.9 Io=100mA Io=30mA 2.8 2.5 2 1.5 1 0.5 2.7 2.7 2.8 2.9 3 3.1 3.2 3.3 0 3.4 0 50 NJM2877_3.0V Ground Pin Current v.s. Output Current 20 150 200 250 300 NJM2877_3.0V Dropout Voltage vs. Output Current 0.3 o o @:Ta=25 C Co=0.47µF(Ceramic) @:Ta=25 C V IN=4.0V Co=0.47µF(Ceramic) 0.25 15 Dropout Voltage:dVI-O (V) Ground Pin Current : GI ND (mA) 100 Output Current : Io(mA) Input Voltage : VIN(V) 10 5 0.2 0.15 0.1 0.05 0 0 0 50 100 150 0 200 50 Output Current : IO(mA) NJM2877_3.0V Control Current vs. Control Voltage 30 15 Rc=100kΩ 10 200 Rc=0Ω 3 Output Voltage : Vo(V) (µA) Cont Control Current : I 3.5 20 Rc=0Ω 150 NJM2877_3.0V Output Voltage vs. Control Voltage 4 @:Ta=25 oC V IN=4.0V Co=0.47µF(Ceramic) Cp=0.01µF Io=30mA 25 100 Output Current:Io(mA) Rc=50kΩ Rc=50kΩ 2.5 2 Rc=100k Ω 1.5 1 o @:Ta=25 C VIN=4.0V Co=0.47µF(Ceramic) Cp=0.01µF Io=30mA 5 0.5 0 0 0.5 1 1.5 2 2.5 Control Voltage : V 3 (V) Cont -8- 3.5 4 0 0 0.5 1 1.5 2 Control Voltage : V 2.5 3 (V) Cont Ver.2011-04-01 NJM2877 TYPICAL CHARACTERISTICS NJM2877_3.0V Load Regulation vs. Output Current 0 NJM2877_3.0V Peak Output Current vs. Input Voltage 300 250 Peak Output Current : IoMAX(mA) Load Regulation : dVo/dIo(mV) -10 -20 -30 -40 -50 @:Ta=25 oC V IN=4.0V Co=0.47µF(Ceramic) 0 50 100 150 200 150 100 50 @:Ta=25oC Co=0.47µF(Ceramic) 0 200 4 5 6 Output Current : Io(mA) NJM2877_3.0V Quiescent Current v.s. Input Voltage 2000 Output Noise Voltage : Vn(µVrms) Quiescent Current : IQ (µA) 1000 500 150 100 50 6 8 10 1p Input Voltage : VIN(V) Output Noise Voltage :Vn (nV/√ Hz) Output Noise Voltage :Vn (µVrms) @:Ta=25 C VIN=4.0V Co=0.47µF Cp=0.01µF LPF:80kHz 60 40 20 0 0.001 0.01 0.1 1 Output Current :Io [mA] Ver.2011-04-01 100p 1000p 0.01µ 0.1µ NJM2877_3.0V Output Noise Voltage vs. Frequency 1000 o 80 10p Noise Bypass Capacitor : Cp(F) NJM2877_3.0V Output Noise Voltage vs. Output Current 100 10 200 0 0 4 9 @:Ta=25 oC VIN=4.0V Co=0.47µF(Ceramic) Io=10mA 250 1500 2 8 NJM2877_3.0V Output Noise Voltage vs. Noise Bypass Capacitor 300 @:Ta=25oC Output is open. Co=0.47µF(Ceramic) Including Icont 0 7 Input Voltage : VIN(V) 10 100 800 @:Ta=25oC V IN=4.0V Co=0.47µF Cp=0.01µF Io=10mA 600 400 200 0 100 1000 104 105 Frequency :f [Hz] -9- NJM2877 TYPICAL CHARACTERISTICS NJM2877_3.0V Ripple Rejection Ratio v.s. Frequency 100 @:Ta=25oC VIN=4.0V ein=200mVrms Co=0.47µF(Ceramic) 90 90 Io=10mA 80 f=1kHz 80 Io=0mA Ripple Rejection : RR (dB) Ripple Rejection Ratio : RR (dB) NJM2877_3.0V Ripple Rejection vs. Output Current 100 70 60 Io=30mA 50 40 70 f=10kHz 60 50 40 o 30 20 @:Ta=25 C V IN=4.0V ein=200mVrms Co=0.47µF(Ceramic) 10 10 30 1k 1000 100 100 20 0.001 5 100k 10 4 10k 10 Frequency : f (Hz) 0.01 0.1 1 10 100 Output Current : Io(mA) NJM2877_3.0V Equivalent Serise Resistance vs. Output Current 100 Equivalent Serise Resistance : ESR(Ω ) @:Ta=25 oC V IN=4.0V Co=0.47µF(Ceramic) Cp=0.01µF 10 STABLE REGION 1 0.1 0.02 0.001 0.01 0.1 1 10 100 3 10 Output Current : Io(mA) 0.3 NJM2877_3.0V Dropout Voltage v.s. Temperature NJM2877_3.0V Output Voltage v.s. Temperature 3.1 @:Io=60mA Co=0.47µF(Ceramic) Cp=0.01µF @:VIN=4.0V Io=30mA Co=0.47µF(Ceramic) Cp=0.01µF 3.05 Output Voltage :Vo [V] Dropout Voltage :dVi-o [V] 0.25 0.2 0.15 0.1 3 2.95 0.05 0 2.9 -50 0 50 100 o Temperature :Ta [ C] - 10 - 150 -50 0 50 100 150 o Temperature :Ta [ C] Ver.2011-04-01 NJM2877 TYPICAL CHARACTERISTICS NJM2877_3.0V Control Voltage v.s. Temperature @:VIN=4.0V Output is open. Co=0.47µF(Ceramic) Cp=0.01µF 1.5 Control Current : ICONT [ µA] Control Voltage :Vcont-off [V] 2 NJM2877_3.0V Control Current vs. Temperature 20 1 0.5 @:Ta=25oC V IN=4.0V Vcont=1.6V Co=0.47µF(Ceramic) Cp=0.1µF(Ceramic) 15 10 5 0 0 -50 0 50 100 -50 150 0 o 300 NJM2877_3.0V Quiescent Current v.s. Temperature 100 150 NJM2877_3.0V Short Circuit Current v.s. Temperature 200 @:V IN=4.0V Output is short to ground. Co=0.47µF(Ceramic) Cp=0.01µF @:VIN=4.0V Output is open. Co=0.47µF(Ceramic) Cp=0.01µF Short Circuit Current :Isc [mA] 250 Quiescent Current : Iq [µA] 50 Temperature :Ta [oC] Temperature :Ta [ C] 200 150 100 150 100 50 50 0 0 -50 0 50 100 -50 150 0 @:VIN=4.0-9.0V Io=30mA Co=0.47µF(Ceramic) Cp=0.01µF 0 -0.1 @:V IN=4.0V Io=0-100mA Co=0.47µF(Ceramic) Cp=0.01µF 0.025 0.02 0.015 0.01 0.005 0 0 50 100 o Temperature :Ta [ C] Ver.2011-04-01 150 NJM2877_3.0V Load Regulation v.s. Temperature 0.03 Load Regulation :dVo/dIo [%/mA] Line Regulation :dVo/dVin [%/V] NJM2877_3.0V Line Regulation v.s. Temperature 0.1 -0.2 -50 100 Temperature :Ta [ C] Temperature :Ta [ C] 0.2 50 o o 150 -50 0 50 100 150 o Temperature :Ta [ C] - 11 - NJM2877 TYPICAL CHARACTERISTICS NJM2877_3.0V Output Peak Current v.s. Temperature NJM2877_3.0V Output Voltage v.s. Tem perature 3.5 @:VIN=4.0V Co=0.47µF(Ceramic) Cp=0.01µF 3 225 2.5 Output Voltage :Vo [V] 150 75 2 1.5 1 @:VIN=4.0V Io=30mA Co=0.47µF(Ceramic) Cp=0.01µF 0.5 0 0 0 50 100 150 -50 0 50 o NJM2877_3.0V ON/OFF Transient Response without Load NJM2877_3.0V ON/OFF Transient Response 15 15 10 5 4 0 Output Voltage 3 -5 2 -10 1 0 -1 1 2 3 Time : t [S] 4 Control Voltage 5 5 0 Output Voltage 3 -5 2 -10 -15 1 -15 -20 0 -20 -25 -1 5 -25 0 4 8 12 Time : t [mS] 16 20 NJM2877_3.0V Input Transient Response 150 3.1 7 3.08 100 3.08 6 50 3.04 0 3.02 -50 Output Voltage 3 -100 2.98 o @:Ta=25 C VIN=4.0V Co=0.47µF(Ceramic) Cp=0.01µF 2.96 2.94 0 40 80 120 Time : t [ µS] 160 -150 3.06 Output Voltage : Vo [V] 3.06 Output Current : Io [mA] 3.1 Output Current Output Voltage : Vo [V] 10 4 NJM2877_3.0V Load Transient Response - 12 - @:Ta=25 C VIN=4.0V Co=0.47µF(Ceramic) Cp=0.01µF Io=30mA 6 Output Voltage : Vo [V] Control Voltage Control Voltage : Vo [V] Output Voltage : Vo [V] o @:Ta=25 C VIN=4.0V Co=0.47µF(Ceramic) Cp=0.01µF Io=0mA 6 200 7 o 0 150 o Temperature :Ta [ C] 7 5 100 Temperature :Ta [ C] Control Voltage : Vo [V] -50 5 Input Voltage 3.04 4 3.02 3 3 2 Output Voltage o @:Ta=25 C VIN=4.0V Co=0.47µF(Ceramic) Cp=0.01µF Io=30mA 2.98 -200 2.96 -250 200 2.94 Input Voltage : VIN [V] Output Peak Current :Ipeak [mA] 300 1 0 -1 0 40 80 120 Time : t [ µS] 160 200 Ver.2011-04-01 NJM2877 [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.2011-04-01 - 13 -