NJM2871B/72B Low Dropout Voltage Regulator ! GENERAL DESCRIPTION The NJM2871B/72B are low dropout voltage regulator designed for cellular phone applications. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. ! PACKAGE OUTLINE NJM2871BF/72BF ! FEATURES " High Ripple Rejection 75dB typ. (f=1kHz Vo=3V version) " Output Noise Voltage Vno=30µVrms typ. (Cp=0.01µF) " Output capacitor with 1.0uF 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) " Input Voltage Range +2.3 ∼ +14V(Vo≤2.0V version) " ON/OFF Control (Active High) " Internal Short Circuit Current Limit " Internal Thermal Overload Protection " Bipolar Technology " Package Outline SOT-23-5 (MTP5) ! PIN CONFIGURATION 5 4 1 2 3 1. CONTROL (Active High) 2. GND 3. NOISE BYPASS 4. VOUT 5. VIN 5 4 1 2 3 NJM2871BF 1. VIN 2. GND 3. CONTROL (Active High) 4. NOISE BYPASS 5. VOUT NJM2872BF ! EQUIVALENT CIRCUIT V OUT VIN Control Thermal Protection Bandgap Reference Noise Bypass GND Ver.2006-02-20 -1- NJM2871B/72B ! OUTPUT VOLTAGE RANK LIST Device Name VOUT Device Name NJM287*BF15 1.5V NJM287*BF26 NJM287*BF18 1.8V NJM287*BF27 NJM287*BF19 1.9V NJM287*BF28 NJM287*BF02 2.0V NJM287*BF29 NJM287*BF21 2.1V NJM287*BF03 NJM287*BF23 2.3V NJM287*BF31 NJM287*BF24 2.4V NJM287*BF32 NJM287*BF25 2.5V NJM287*BF33 VOUT 2.6V 2.7V 2.8V 2.9V 3.0V 3.1V 3.2V 3.3V Device Name NJM287*BF34 NJM287*BF35 NJM287*BF38 NJM287*BF04 NJM287*BF48 NJM287*BF05 VOUT 3.4V 3.5V 3.8V 4.0V 4.8V 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 ∼ +14V (In case of Vo<2.1V version) ! ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.1µF, Co=1.0µF: Vo≥2.7V (Co=2.2µF : 1.8V<Vo≤2.6V:, Co=4.7µF : Vo≤1.8V), Cp=0.01µF, Ta=25°C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Output Voltage Vo Io=30mA -1.0% − +1.0% V Quiescent Current Quiescent Current at Control OFF Output Current Line Regulation IQ Io=0mA, except Icont − 120 180 µA VCONT=0V − − 100 nA Io ∆Vo/∆VIN Vo-0.3V VIN=Vo+1V ∼ Vo+6V, Io=30mA 150 − 200 − − 0.10 mA %/V Load Regulation Dropout Voltage (*4) ∆Vo/∆Io ∆VI−O Io=0 ∼ 100mA Io=60mA ein=200mVrms, f=1kHz, Io=10mA, Vo=3V version − − − 0.10 0.03 0.18 %/mA V − 75 − dB Ta=0 ∼ +85°C, Io=10mA − ± 50 − ppm/°C f=10Hz∼80kHz, Io=10mA, Vo=3V Version − 30 − µVrms VCONT(ON) 1.6 − − V VCONT(OFF) − − 0.6 V Ripple Rejection Average Temperature Coefficient of Output Voltage Output Noise Voltage Control Voltage for ON-state Control Voltage for OFF-state IQ(OFF) RR ∆Vo/∆Ta VNO1 (*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. -2- Ver.2006-02-20 NJM2871B/72B ! TEST CIRCUIT A IIN VIN VIN 0.1µF A V *5 Ver.2006-02-20 VOUT NJM287*B ICONT CONTROL GND 1.0µF *5 IOUT V VOUT NOISE BYPASS Cp=0.01µF VCONT 1.8V<Vo ≤ 2.6V version : Co=2.2µF Vo≤ 1.8V version : Co=4.7µF -3- NJM2871B/72B ! TYPICAL APPLICATION 1 In the case where ON/OFF Control is not required: VIN VIN 0.1µF VOUT NJM287*B VOUT 1.0µF *6 R (0∼300kΩ) CONTROL NOISE BYPASS Cp=0.01µF GND *6 1.8V<Vo ≤ 2.6V version : Co=2.2µF Vo≤1.8V version : Co=4.7µF Connect control terminal to VIN terminal 2 In use of ON/OFF CONTROL: VIN VIN VOUT NJM287*B 0.1µF VOUT 1.0µF *6 R CONTROL NOISE BYPASS GND *6 Cp=0.01µF 1.8V<Vo ≤ 2.6V version : Co=2.2µF(ceramic) Vo≤1.8V version : Co=4.7µF(ceramic) 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. %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. -4- Ver.2006-02-20 NJM2871B/72B ! POWER DISSIPATION vs. AMBIENT TEMPERATURE NJM2871B/72BF 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.2006-02-20 -5- NJM2871B/72B ! ELECTRICAL CHARACTERISTICS NJM2871B_3V Output Voltage vs. Output Current NJM2871B_3V Output Voltage v.s. Input Voltage 3.2 4 o @:Ta=25 C Co=1.0µF(Ceramic) Cp=0.01µF 3.5 3 Output Voltage :Vo [V] Output Voltage :Vo [V] 3.1 Io=0A 3 2.9 Io=30mA 2.5 2 1.5 1 o @:Ta=25 C VIN=4V Co=1.0µF(Ceramic) Cp=0.01µF 2.8 0.5 Io=100mA 2.7 0 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 0 50 100 Input Voltage :Vin [V] NJM2871B_3V Ground Pin Current vs. Output Voltage 200 250 300 NJM2871B_3.0V Dropout Voltage vs. Output Current 20 0.3 o @:Ta=25 C Co=1.0µF(Ceramic) Cp=0.01µF o @:Ta=25 C VIN=4V Co=1.0µF(Ceramic) Cp=0.01µF 0.25 15 Dropout Voltage :dVi-o [V] Ground Pin Current :IGND [ mA] 150 Output Current :Io [mA] 10 5 0.2 0.15 0.1 0.05 0 0 0 50 100 150 200 0 50 100 150 200 Output Current :Io [mA] Output Current :Io [mA] NJM2871B_3.0V Control Current v.s. Control Voltage NJM2871B_3.0V Output Voltage v.s. Control Voltage 30 4 o @:Ta=25 C VIN=4.0V Co=1.0µF(Ceramic) Cp=0.01µF Io=30mA Output Voltage :Vo [V] Control Current :ICONT [ µA] 25 o @:Ta=25 C VIN=4.0V Co=1.0µF(Ceramic) Cp=0.01µF Io=30mA 3.5 20 15 Rc=0Ω Rc=50kΩ 10 3 Rc=0Ω 2.5 Rc=50kΩ 2 Rc=100kΩ 1.5 1 5 0.5 Rc=100kΩ 0 0 0 0.5 1 1.5 2 2.5 3 Control Voltage :VCONT [V] -6- 3.5 4 0 0.5 1 1.5 2 2.5 3 Control Voltage :VCONT [V] Ver.2006-02-20 NJM2871B/72B ! ELECTRICAL CHARACTERISTICS NJM2871B_3V Peak Output Current vs. Input Voltage NJM2871B_3V Load Regulation vs. Output Current 300 0 250 Peak Output Current :Io MAX [mA] Load Regulation :dVo/dIo [mV] -10 -20 -30 -40 o @:Ta=25 C VIN=4V Co=1.0µF(Ceramic) Cp=0.01µF -50 200 150 100 50 o @:Ta=25 C Co=1.0µF(Ceramic) Cp=0.01µF 0 0 50 100 150 200 4 6 8 Output Current :Io [mA] 10 NJM2871B_3.0V Quiescent Current v.s. Input Voltage 2000 o 1200 800 400 0 5 @:Ta=25 C VIN=4V Co=1µF(Ceramic) Io=10mA 250 Output Noise Voltage : Vn ( µ Vrms) Quiescent Current : IQ [ µ A] o @:Ta=25 C Output is open. Co=1.0µF(Ceramic) Cp=0.01µF including Icont 0 10 200 150 100 50 0 1p-12 10 15 -11 10p 10 -10 100p 10 -9 1000p 10 -8 0.01µ 10 -7 0.1µ 10 Noise Bypass Capacitor : Cp(F) Input Voltage :VIN [V] 100 14 NJM2871B_3.0V Output Noise Voltage vs. Noise Bypass Capacitor 300 1600 12 Input Voltage : VIN [V] NJM2871B_3.0V Ripple Rejection Ratio v.s. Frequency NJM2871B_3.0V Output Noise Voltage vs. Output Current 90 80 60 40 Co=1.0µF(Ceramic) 20 Co=2.2µF(Ceramic) 0 0.001 Io=10mA 70 Io=30mA 60 50 40 o @:Ta=25 C VIN=4.0V ein=200mVrms Co=1µF(Ceramic) Cp=0.01µF 30 20 0.01 0.1 1 Output Current :Io [mA] Ver.2006-02-20 Io=0mA 80 Ripple Rejection Ratio :RR [dB] Output Noise Voltage :Vn [ µ Vrms] o @:Ta=25 C VIN=4V Cp=0.01µF LPF:80kHz 10 100 10 10 100 1k 1000 10k4 10 5 100k 10 Frequency :f [Hz] -7- NJM2871B/72B ! ELECTRICAL CHARACTERISTICS NJM2871B_3.0V Equivalent Series Resistance vs. Output Current NJM2871B_3.0V Ripple Rejection vs. Output Current 100 100 o @:Ta=25 C VIN=4V Co=1.0µF(Ceramic) Cp=0.01µF Equivalent Series Resistance :ESR [ Ω Ω] 90 f=1kHz Ripple Rejection : RR (dB) 80 70 f=10kHz 60 50 40 o @:Ta=25 C VIN=4.0V ein=200mVrms Co=1.0µF(Ceramic) 30 20 0.001 10 STABLE REGION 1 0.1 0.02 0.01 0.1 1 10 0.001 100 0.01 0.1 1 10 100 Output Current :Io [mA] Output Current : Io(mA) NJM2871B_3.0V Output Voltage v.s. Temperature NJM2871B_3.0V Dropout Voltage v.s. Temperature 0.3 3.1 @:VIN=4.0V Io=30mA Co=1.0µF(Ceramic) Cp=0.01µF @:Io=60mA Co=1.0µF(Ceramic) Cp=0.01µF 0.25 Output Voltage :Vo [V] Dropout Voltage :dVi-o [V] 3.05 0.2 0.15 0.1 3 2.95 0.05 2.9 0 -50 0 50 100 -50 150 0 50 150 Temperature :Ta [ C] Temperature :Ta [ C] NJM2871B_3.0V Control Voltage v.s. Temperature NJM2871B_3.0V Control Current v.s. Temperature 2 10 @:VIN=4.0V Output is open. Co=1.0µF(Ceramic) Cp=0.01µF @:VIN=4.0V Output is open. Co=1.0µF(Ceramic) Cp=0.01µF V CONT=1.6V 8 1.5 Control Current : Icont ( µ A) Control Voltage :Vcont-off [V] 100 o o 1 0.5 6 4 2 0 0 -50 0 50 100 o Temperature :Ta [ C] -8- 150 -50 0 50 100 150 o Temperature Ta ( C) Ver.2006-02-20 NJM2871B/72B ! ELECTRICAL CHARACTERISTICS NJM2871B_3.0V Short Circuit Current v.s. Temperature NJM2871B_3.0V Quiescent Current v.s. Temperature 200 300 Short Circuit Current :Isc [mA] 250 Quiescent Current : IQ [ µ A] @:VIN=4.0V Output is short to ground. Co=1.0µF(Ceramic) Cp=0.01µF @:VIN=4.0V Output is open. Co=1.0µF(Ceramic) Cp=0.01µF 200 150 100 150 100 50 50 0 0 -50 0 50 100 150 -50 0 o 100 150 Temperature :Ta [ C] NJM2871B_3.0V Line Regulation v.s. Temperature NJM2871B_3.0V Load Regulation v.s. Temperature 0.2 0.03 @:VIN=4.0-9.0V Io=30mA Co=1.0µF(Ceramic) Cp=0.01µF @:VIN=4.0V Io=0-100mA Co=1.0µF(Ceramic) Cp=0.01µF 0.025 Load Regulation :dVo/dIo [%/mA] Line Regulation :dVo/dVin [%/V] 50 o Temperature :Ta [ C] 0.1 0 -0.1 -0.2 0.02 0.015 0.01 0.005 0 -50 0 50 100 150 o -50 0 50 100 150 o Temperature :Ta [ C] Temperature :Ta [ C] NJM2871B_3.0V Output Voltage v.s. Temperature 3.5 3 Output Voltage :Vo [V] 2.5 2 1.5 1 @:VIN=4.0V Io=30mA Co=1.0µF(Ceramic) Cp=0.01µF 0.5 0 -50 0 50 100 150 200 o Temperature :Ta [ C] Ver.2006-02-20 -9- NJM2871B/72B ! ELECTRICAL CHARACTERISTICS NJM2871B_3.0V ON/OFF Transient Response without Load NJM2871B_3.0V ON/OFF Transient Response 15 7 15 7 5 10 Control Voltage 5 0 4 Output Voltage 3 -5 2 -10 1 0 -1 0 1 2 3 Time : t [S] 4 6 5 Output Voltage : Vo [V] Control Voltage Control Voltage : Vo [V] 6 Output Voltage : Vo [V] o @:Ta=25 C VDD=4.0V Co=1.0µF(Ceramic) Cp=0.01µF Io=30mA 10 5 0 4 Output Voltage 3 -5 2 -10 -15 1 -15 -20 0 -20 -25 -1 5 Control Voltage : Vo [V] o @:Ta=25 C VDD=4.0V Co=1.0µF(Ceramic) Cp=0.01µF Io=0mA -25 0 4 8 NJM2871B_3.0V Load Transient Response 12 Time : t [mS] 16 20 NJM2871B_3.0V Input Transient Response 3.1 150 3.1 7 100 3.08 6 Output Voltage : Vo [V] 3.06 50 0 3.04 -50 3.02 Output Voltage -100 3 3.06 3.04 4 3.02 3 Output Voltage o -150 2.96 -200 2.96 -250 200 2.94 0 40 80 120 Time : t [ µS] 160 2 3 2.98 2.94 5 Input Voltage @:Ta=25 C VDD=4.0V Co=1.0µF(Ceramic) Cp=0.01µF Io=30mA 2.98 Input Voltage : VIN [V] Output Current Output Voltage : Vo [V] 3.08 Output Current : Io [mA] o @:Ta=25 C VDD=4.0V Co=1.0µF(Ceramic) Cp=0.01µF 1 0 -1 0 40 80 120 Time : t [ µS] 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.2006-02-20