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.2005-01-25 -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*BF25 2.5V NJM287*BF32 VOUT 2.6V 2.7V 2.8V 2.9V 3.0V 3.1V 3.2V Device Name NJM287*BF33 NJM287*BF34 NJM287*BF35 NJM287*BF38 NJM287*BF04 NJM287*BF48 NJM287*BF05 VOUT 3.3V 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 -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 − 0.10 0.03 mA %/V %/mA 0.18 V Dropout Voltage (*4) Ripple Rejection Average Temperature Coefficient of Output Voltage Output Noise Voltage Control Voltage for ON-state Control Voltage for OFF-state IQ(OFF) Io 150 200 VIN=Vo+1V ∼ Vo+6V, Io=30mA Io=0 ∼ 100mA Io=60mA ein=200mVrms, f=1kHz, Io=10mA, Vo=3V version − − − − − 0.10 − 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 ∆Vo/∆VIN ∆Vo/∆Io ∆VI−O RR ∆Vo/∆Ta VNO1 Vo-0.3V (*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.2005-01-25 NJM2871B/72B TEST CIRCUIT A IIN VIN VIN 0.1µF A V *5 VOUT NJM287*B ICONT 1.0µF IOUT *5 V VOUT NOISE BYPASS CONTROL Cp=0.01µF GND VCONT 1.8V<Vo ≤ 2.6V version : Co=2.2µF Vo≤ 1.8V version : Co=4.7µF 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 GND *6 NOISE BYPASS Cp=0.01µF 1.8V<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”. Ver.2005-01-25 -3- NJM2871B/72B 2 In use of ON/OFF CONTROL: VIN VIN VOUT VOUT NJM287*B 0.1µF 1.0µF *6 R CONTROL NOISE BYPASS Cp=0.01µF GND *6 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 0.01uF greater to avoid the problem. 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(℃) -4- Ver.2005-01-25 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=1.0uF(Ceramic) Cp=0.01uF 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=1.0uF(Ceramic) Cp=0.01uF 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=1.0uF(Ceramic) Cp=0.01uF o @:Ta=25 C VIN=4V Co=1.0uF(Ceramic) Cp=0.01uF 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=1.0uF(Ceramic) Cp=0.01uF Io=30mA Output Voltage :Vo [V] Control Current :Icont [uA] 25 o @:Ta=25 C Vin=4.0V Co=1.0uF(Ceramic) Cp=0.01uF 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] Ver.2005-01-25 3.5 4 0 0.5 1 1.5 2 2.5 3 Control Voltage :Vcont [V] -5- 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=1.0uF(Ceramic) Cp=0.01uF -50 200 150 100 50 o @:Ta=25 C Co=1.0uF(Ceramic) Cp=0.01uF 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=1uF (Ceramic) Io=10mA 250 Output Noise Voltage : Vn(uVrms) Quiescent Current : Iq [uA] o @:Ta=25 C Output is open. Co=1.0uF(Ceramic) Cp=0.01uF including Icont 0 10 200 150 100 50 0 1p-12 10 15 -11 10p 10 -10 100p 10 -9 1000p 10 -8 0.01u 10 -7 0.1u 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 Io=10mA 60 40 Co=1.0uF(Ceramic) 20 Co=2.2uF(Ceramic) 0 0.001 70 Io=30mA 60 50 40 o @:Ta=25 C VIN=4.0V ein=200mVrms Co=1uF(Ceramic) Cp=0.01uF 30 20 0.01 0.1 1 Output Current :Io [mA] -6- Io=0mA 80 Ripple Rejection Ratio :RR [dB] Output Noise Voltage :Vn [uVrms] o @:Ta=25 C VIN=4V Cp=0.01uF LPF:80kHz 10 100 10 10 100 1k 1000 10k4 10 5 100k 10 Frequency :f [Hz] Ver.2005-01-25 NJM2871B/72B ELECTRICAL CHARACTERISTICS NJM2871B_3.0V Equivalent Series Resistance vs. Output Current NJM2871B_3.0V Ripple Rejection vs. Output Current 100 100 o Equivalent Series Resistance :ESR [ohm] 90 f=1kHz Ripple Rejection : RR (dB) 80 70 f=10kHz 60 50 40 o @:Ta=25 C VIN=4.0V ein=200mVrms Co=1.0uF(Ceramic) 30 20 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 0.001 100 0.01 0.1 1 100 NJM2871B_3.0V Control Voltage v.s. Temperature NJM2871B_3.0V Dropout Voltage v.s. Temperature 2 0.3 @:VIN=4.0V Output is open. Co=1.0uF(Ceramic) Cp=0.01uF @:Io=60mA Co=1.0uF(Ceramic) Cp=0.01uF Control Voltage :Vcont-off [V] 0.25 Dropout Voltage :dVi-o [V] 10 Output Current :Io [mA] Output Current : Io(mA) 0.2 0.15 0.1 1.5 1 0.5 0.05 0 0 -50 0 50 100 -50 150 0 100 150 Temperature :Ta [ C] Temperature :Ta [ C] NJM2871B_3.0V Output Voltage v.s. Temperature NJM2871B_3.0V Quiescent Current v.s. Temperature 3.1 300 @:VIN=4.0V Io=30mA Co=1.0uF(Ceramic) Cp=0.01uF @:VIN=4.0V Output is open. Co=1.0uF(Ceramic) Cp=0.01uF 250 Quiescent Current : Iq [uA] 3.05 Output Voltage :Vo [V] 50 o o 3 2.95 200 150 100 50 2.9 0 -50 0 50 100 o Temperature :Ta [ C] Ver.2005-01-25 150 -50 0 50 100 150 o Temperature :Ta [ C] -7- NJM2871B/72B ELECTRICAL CHARACTERISTICS NJM2871B_3.0V Line Regulation v.s. Temperature NJM2871B_3.0V Load Regulation v.s. Temperature 0.2 0.03 @:VIN=4.0V Io=0-100mA Co=1.0uF(Ceramic) Cp=0.01uF 0.025 Load Regulation :dVo/dIo [%/mA] 0.1 0 -0.1 0.02 0.015 0.01 0.005 -0.2 0 -50 0 50 100 150 -50 0 o 50 Temperature :Ta [ C] NJM2871B_3.0V Output Voltage v.s. Temperature NJM2871B_3.0V Short Circuit Current v.s. Temperature 3.5 @:VIN=4.0V Output is short to ground. Co=1.0uF(Ceramic) Cp=0.01uF Short Circuit Current :Isc [mA] Output Voltage :Vo [V] 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 NJM2871B_3.0V ON/OFF Transient Response 15 7 15 7 o o @:Ta=25 C VDD=4.0V Co=1.0uF(Ceramic) Cp=0.01uF Io=0mA Control Voltage 5 0 4 Output Voltage 3 -5 2 -10 1 0 -1 0 1 2 3 Time : t [S] 4 @:Ta=25 C VDD=4.0V Co=1.0uF(Ceramic) Cp=0.01uF Io=30mA 6 5 5 Output Voltage : Vo [V] 5 10 Control Voltage : Vo [V] Control Voltage 150 Temperature :Ta [ C] NJM2871B_3.0V ON/OFF Transient Response without Load 6 100 o Temperature :Ta [ C] Output Voltage : Vo [V] 150 200 3 -8- 100 o Temperature :Ta [ C] 10 5 0 4 Output Voltage 3 -5 2 -10 -15 1 -15 -20 0 -20 -25 -1 Control Voltage : Vo [V] Line Regulation :dVo/dVin [%/V] @:VIN=4.0-9.0V Io=30mA Co=1.0uF(Ceramic) Cp=0.01uF -25 0 4 8 12 Time : t [mS] 16 20 Ver.2005-01-25 NJM2871B/72B ELECTRICAL CHARACTERISTICS NJM2871B_3.0V Load Transient Response NJM2871B_3.0V Input Transient Response 3.1 150 3.1 7 100 3.08 6 50 Output Voltage : Vo [V] 3.06 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 [uS] 160 2 3 2.98 2.94 5 Input Voltage @:Ta=25 C VDD=4.0V Co=1.0uF(Ceramic) Cp=0.01uF 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=1.0uF(Ceramic) Cp=0.01uF 1 0 -1 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. Ver.2005-01-25 -9-