NJM2870 LOW DROPOUT VOLTAGE REGULATOR GENERAL DESCRIPTION The NJM2870 is low dropout voltage regulator designed for cellular phone application. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. ■ PACKAGE OUTLINE NJM2870F FEATURES High Ripple Rejection 56dB ≤ RR (DC < f < 60kHz) 66dB typ. (f=100Hz) 60dB typ. (f=1kHz) Output Noise Voltage Vno=30µV typ.(Cp=0.01µF) Output Current Io(max.)=150mA High Precision Output Vo±2% Low Dropout Voltage ∆VI-O=0.12V typ. (Io=60mA, Vo≥1.8V) Input Voltage range +2∼+14V (Vo=1.5V Version) ON/OFF Control (Active High) Output capacitor with 4.7uF ceramic capacitor Internal Short Circuit Current Limit Internal Thermal Overload Protection Bipolar Technology Package Outline SOT-23-5 PIN CONFIGURATION 5 4 1 2 3 NJM2870F PIN FUNCTION 1. CONTROL (Active High) 2. GND 3. NOISE BYPASS 4. VOUT 5. VIN EQUIVALENT CIRCUIT VOUT VIN Cont Thermal Protection Bandgap Reference GND Noise Bypass NJM2870 ABSOLUTE MAXIMUM RATINGS(Ta=25°C) PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN +14 V Control Voltage VCONT +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. ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.1µF, Co=4.7µF, Cp=0.01µF, Ta=25°C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. Io=30mA Output Voltage Vo +2% −2% − Io=0mA, expect Icont Quiescent Current 200 300 IQ − Quiescent Current 100 IQ(OFF) VCONT=0V − − at Control OFF Output Current Io 150 200 Vo−0.3V − Line Regulation 0.10 ∆Vo/∆VIN VIN=Vo+1V ∼ Vo+6V, Io=30mA − − Load Regulation 0.03 ∆Vo/∆Io Io=0 ∼ 100mA − − Dropout Voltage 0.12 0.2 ∆VI-O Io=60mA − Ripple Rejection ein=200mVrms,f=1kHz, Io=10mA RR 60 − − VIN=Vo+2V, Vo=3V Version Average Temperature Ta=0∼85°C, Io=10mA, 0.2 ∆Vo/∆Ta − − Coefficient of Output Voltage Vo=3V Version f=10Hz∼80kHz, Io=10mA, Output Noise Voltage VNO 30 − − Vo=3V Version Control Voltage for ON-state VCONT(ON) 1.6 − − Control Voltage for OFF-state VCONT(OFF) 0.6 − − UNIT V µA nA mA %/V %/mA V dB mV/°C µVrms 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. ELECTRICAL CHARACTERISTICS (Vo=1.5V Version, VIN=2.4V, CIN=0.1µF, Co=4.7µF, Cp=0.01µF, Ta=25°C) PARAMETER SYMBOL TEST CONDITION MIN. Io=30mA Output Voltage Vo −2% Io=0mA, expect Icont Quiescent Current IQ − Quiescent Current IQ(OFF) VCONT=0V − at Control OFF Output Current Io 150 Vo−0.3V Line Regulation ∆Vo/∆VIN VIN=Vo+1V ∼ Vo+6V, Io=30mA − Load Regulation ∆Vo/∆Io Io=0 ∼ 100mA − Ripple Rejection ein=200mVrms,f=1kHz, Io=10mA RR − VIN=Vo+2V Average Temperature ∆Vo/∆Ta Ta=0∼85°C, Io=10mA − Coefficient of Output Voltage Output Noise Voltage VNO f=10Hz∼80kHz, Io=10mA, − Control Voltage for ON-state VCONT(ON) 1.6 Control Voltage for OFF-state VCONT(OFF) − TYP. − 200 − 200 − − MAX. UNIT +2% V 300 µA 100 nA mA − 0.10 %/V 0.03 %/mA 64 − dB 0.13 − mV/°C 15 − − − − 0.6 µVrms V V NJM2870 OUTPUT VOLTAGE RANK LIST Device Name NJM2870F15 NJM2870F18 NJM2870F19 NJM2870F02 NJM2870F21 NJM2870F23 NJM2870F24 NJM2870F25 NJM2870F26 VOUT 1.5V 1.8V 1.9V 2.0V 2.1V 2.3V 2.4V 2.5V 2.6V Device Name NJM2870F27 NJM2870F28 NJM2870F285 NJM2870F29 NJM2870F03 NJM2870F31 NJM2870F32 NJM2870F33 NJM2870F34 VOUT 2.7V 2.8V 2.85V 2.9V 3.0V 3.1V 3.2V 3.3V 3.4V Device Name NJM2870F35 NJM2870F36 NJM2870F38 NJM2870F04 NJM2870F45 NJM2870F46 NJM2870F47 NJM2870F48 NJM2870F05 VOUT 3.5V 3.6V 3.8V 4.0V 4.5V 4.6V 4.7V 4.8V 5.0V TEST CIRCUIT A IIN VIN VOUT + VIN 0.1µF A V VCONT ICONT + NJM2870 4.7µF IOUT V VOUT (tantalum) CONTROL NOISE BYPASS GND Cp=0.01µF NJM2870 TYPICAL APPLICATION 1 In case that ON/OFF Control is not required: VIN VIN 0.1µF VOUT 4.7µF NJM2870 R (0 ∼ 300kΩ) VOUT (ceramic or tantalum) NOISE CONTROL BYPASS Cp=0.01µF GND 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 NJM2870 0.1µF VOUT 4.7µF (ceramic or tantalum) R CONTROL NOISE BYPASS GND Cp=0.01µF 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. NJM2870 POWER DISSIPATION vs. AMBIENT TEMPERATURE NJM2870F 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 Ambient Temperature Ta(℃) 75 100 NJM2870 TYPICAL CHARACTERISTICS NJM2870 TYPICAL CHARACTERISTICS NJM2870 TYPICAL CHARACTERISTICS NJM2870 [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.